NISTIR 7350 

PERFORMANCE OF A RESIDENTIAL HEAT PUMP 

OPERATING IN THE COOLING MODE WITH SINGLE 

FAULTS IMPOSED 

Minsung Kim 

W. Vance Payne 

Piotr A. Domanski 

U.S. DEPARTMENT OF COMMERCE 

National Institute of Standards and Technology 

Building Environment Division 

Building and Fire Research Laboratory 

Gaithersburg, Maryland 20899-8631 

Christian J. L. Hermes 

HVAC&R Research Centre 

Federal University of Santa Catarina 

88040-900, Florianopolis-SC, BRAZIL 

NISTIR 7350 

PERFORMANCE OF A RESIDENTIAL HEAT PUMP OPERATING IN THE 

COOLING MODE WITH SINGLE FAULTS IMPOSED 

Minsung Kim 

W. Vance Payne 

Piotr A. Domanski 

U.S. DEPARTMENT OF COMMERCE 

National Institute of Standards and Technology 

Building Environment Division 

Building and Fire Research Laboratory 

Gaithersburg, Maryland 20899-8631 

Christian J. L. Hermes 

HVAC&R Research Centre 

Federal University of Santa Catarina 

88040-900, Florianopolis-SC, BRAZIL 

September 2006 

U.S. DEPARTMENT OF COMMERCE 

Carlos M. Gutierrez, Secretary 

TECHNOLOGY ADMINISTRATION 

Robert Cresanti, Under Secretary of Commerce for Technology 

NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY 

William Jeffrey, Director 

Use of Non-SI Units in a NIST Publication 

It is the policy of the National Institute of Standards and Technology to use the International System of 

Units (metric units) in all of its publications. However, in North America in the HVAC&R industry, nonSI units are so widely used instead of SI units that it is more practical and less confusing to include 

measurement values in customary units within some figures and tables. 
i

BRIEF SUMMARY OF THE RESEARCH 

System behavior of a R410A residential unitary split heat pump system was investigated. The system 

was operated in cooling mode and used a thermostatic expansion valve (TXV) as the refrigerant 

expansion device. Seven artificial faults were tested: compressor/reversing valve leakage, improper 

outdoor air flow, improper indoor air flow, liquid line restriction, refrigerant undercharge, refrigerant 

overcharge, and presence of non-condensable gas in the refrigerant. 

The no-fault test results were correlated to produce a reference model of 2nd order multivariate regressive 

polynomials. The reference model used three independent variables, outdoor air temperature, indoor air 

temperature, and indoor dew point temperature, to correlate all other heat pump features. Standard 

deviations of liquid line refrigerant subcooling and evaporator exit refrigerant superheat were used as the 

main indicators for a steady-state detector algorithm. From the no-fault reference model, heat pump 

feature residuals were derived. Since the system was controlled by a TXV, the system could adapt itself 

to considerable external variation. Thus faulty behavior was not as detectable as it would have been with 

an orifice expansion device equipped system. The distinctiveness of a fault depended on the TXV status. 

Heat exchanger faults’ effects upon performance depend on the sizing of the heat exchanger. From the 

dynamic tests, the system showed that the most influential factor for dynamic behavior was the change of 

the evaporator refrigerant exit temperature. 

ACKNOWLEDGMENTS 

The authors thank Mr. Robert “Dutch” Uselton of Lennox Industries in Carrollton, Texas for donating the 

heat pump system used in this study. We also thank Dutch and all of his co-workers at Lennox for giving 

us their time and advice during several meetings at NIST and in Texas. 
ii

TABLE OF CONTENTS 

BRIEF SUMMARY OF THE RESEARCH.................................................................................................i

TABLE OF CONTENTS.............................................................................................................................ii 

LIST OF TABLES......................................................................................................................................iv 

LIST OF FIGURES ..................................................................................................................................... v 

NOMENCLATURE ...................................................................................................................................xi

CHAPTER 1. RATIONALE FOR THE STUDY....................................................................................... 1

CHAPTER 2. LITERATURE REVIEW .................................................................................................... 3

2.1 Research Background.............................................................................................................. 3 

2.2 Previous Research.................................................................................................................... 5 

2.3 Research Objective.................................................................................................................. 7 

CHAPTER 3. EXPERIMENTAL SETUP AND TEST PROCEDURE..................................................... 8

3.1 System Selected for Testing .................................................................................................... 8 

3.2 System Setup and Instrumentation ........................................................................................ 11 

3.3 Implementation of Artificial Faults ....................................................................................... 14 

3.3.1 Compressor/reversing valve leakage..................................................................... 14

3.3.2 Improper outdoor air flow rate.............................................................................. 15

3.3.3 Improper indoor air flow rate................................................................................ 16

3.3.4 Liquid line restriction............................................................................................ 16

3.3.5 Refrigerant undercharge and overcharge .............................................................. 17

3.3.6 Presence of non-condensable gases ...................................................................... 18

3.4 Experimental Procedure and Test Conditions ....................................................................... 18 

CHAPTER 4. NO-FAULT TESTS AND SYSTEM CHARACTERISTICS ........................................... 20

4.1 Identification of Steady State ................................................................................................ 20 

4.2 Variation of Measured Signals .............................................................................................. 21 

4.3 Multivariate Polynomial Reference Model ........................................................................... 22 

4.4 No-Fault Test Results ............................................................................................................ 24 

CHAPTER 5. SINGLE-FAULT TEST RESULTS .................................................................................. 29

5.1 Performance Variation under Single Faults........................................................................... 29 

5.1.1 Compressor/reversing valve leakage..................................................................... 29

5.1.2 Improper outdoor air flow rate.............................................................................. 32

5.1.3 Improper indoor air flow rate................................................................................ 35

5.1.4 Liquid line restriction............................................................................................ 35

5.1.5 Refrigerant undercharge and overcharge .............................................................. 40

5.1.6 Non-condensable gas ............................................................................................ 44

5.2 Comparative Evaluation of Single-Fault Effects .................................................................. 47 

5.2.1 Feature residuals ................................................................................................... 47

5.2.2 Performance variations.......................................................................................... 53

5.3 Transient Behavior at Different Refrigerant Charge Levels ................................................. 62 

CHAPTER 6. CONCLUDING REMARKS............................................................................................. 68

REFERENCES .......................................................................................................................................... 69
iii

APPENDIX A. LIST OF LABORATORY INSTRUMENTATION ...................................................... 72 

APPENDIX B. COEFFICIENTS OF MULTIVARIATE REFERENCE MODEL ................................ 76

APPENDIX C. EXTENDED PERFORMANCE CHARTS.................................................................... 77 

C.1 No-Fault Tests....................................................................................................................... 78 

C.2 Single-Fault Tests ................................................................................................................. 80 

APPENDIX D. RAW EXPERIMENTAL DATA ................................................................................... 92 

D.1 No-Fault Tests ...................................................................................................................... 92 

D.2 Compressor/Reversing Valve Leakage Fault Tests ............................................................ 101 

D.3 Improper Outdoor Air Flow Fault Tests............................................................................. 110 

D.4 Improper Indoor Air Flow Fault Tests................................................................................ 119 

D.5 Liquid line Restriction Fault Tests ..................................................................................... 131 

D.6 Refrigerant Undercharge Fault Tests.................................................................................. 139 

D.7 Refrigerant Overcharge Fault Tests.................................................................................... 146 

D.8 Presence of Non-Condensable Gas Fault Tests .................................................................. 153 
iv

LIST OF TABLES 

Table 3.1. Measurement uncertainties................................................................................................... 11 

Table 3.2. Description of studied faults ................................................................................................ 14 

Table 3.3. Operating conditions for no-fault tests................................................................................. 19 

Table 3.4. Primary tests......................................................................................................................... 19 

Table A.1. Data acquisition channel assignment for FDD split-system testing..................................... 72 

Table A.2. Post-processed data list for FDD analysis............................................................................ 75 

Table B.1. Coefficients of second order multivariate polynomial reference model in Equation 

(4.7b) for selected features and parameters for no-fault estimation..................................... 76 

Table D.1. List of raw data for no-fault tests ......................................................................................... 92 

Table D.2. List of raw data for compressor/reversing valve leakage fault tests................................... 101 

Table D.3. List of raw data for improper outdoor air flow fault tests .................................................. 110 

Table D.4. List of raw data for improper indoor air flow fault tests .................................................... 119 

Table D.5. List of raw data for liquid line restriction fault tests .......................................................... 131 

Table D.6. List of raw data for refrigerant undercharge fault tests ...................................................... 139 

Table D.7. List of raw data for refrigerant overcharge fault tests ........................................................ 146 

Table D.8. List of raw data for presence of non-condensable gas fault tests....................................... 153 
v

LIST OF FIGURES 

Figure 2.1. Energy flow of the United States in 2004 .............................................................................. 4 

Figure 3.1. Side view of the outdoor section with the flow guide............................................................ 8 

Figure 3.2. Circuitry of the outdoor coil................................................................................................... 8 

Figure 3.3. Outdoor section dimensions................................................................................................... 9 

Figure 3.4. Side view of the indoor coil and upflow duct ...................................................................... 10 

Figure 3.5. Circuitry of indoor coil......................................................................................................... 10 

Figure 3.6. Indoor fan-coil unit dimensions ........................................................................................... 11 

Figure 3.7. Air duct arrangement in the indoor environmental chamber................................................ 12 

Figure 3.8. Experimental setup with the heat pump in the cooling mode .............................................. 13 

Figure 3.9. Hot gas bypass used for compressor/reversing valve leakage fault ..................................... 15 

Figure 3.10. Condenser with lower finned area blocked .......................................................................... 16 

Figure 3.11. Artificial setup to implement a liquid line restriction fault using a shut-off valve and 

a metering valve ................................................................................................................... 17 

Figure 4.1 Moving windows of n data points at near k

th time ............................................................... 20 

Figure 4.2. Random error of indoor temperature measurement.............................................................. 23 

Figure 4.3. Pressure-enthalpy diagrams for tests at 37.8 °C (100.0 °F), 32.2 °C (90.0 °F), 

27.8 °C (82.0 °F), and 21.1 °C (70.0 °F) outdoor temperatures with 21.1 °C 

(70.0 °F) indoor temperature and 50 % relative humidity ................................................... 25 

Figure 4.4. Pressure-enthalpy diagrams for tests at 27.8 °C (82.0 °F) outdoor temperature and 

four indoor temperature/relative humidity combinations: 26.7 °C (80.0 °F) DB/50 % 

RH, 26.7 °C (80.0 °F) DB/Dry-coil, 21.1 °C (70.0 °F) DB/50 % RH, 21.1 °C 

(70.0 °F) DB/Dry-coil .......................................................................................................... 25 

Figure 4.5. Variation of temperature measurements with regard to outdoor chamber temperature 

under no-fault condition: From the top left to right: TER – evaporator exit saturation 

temperature; ∆Tsh – evaporator exit superheat, TDW – compressor discharge wall 

temperature, TCR – condenser inlet saturation temperature, ∆Tsc – liquid line 

subcooling, ∆TCA - condenser air temperature rise, ∆TEA – evaporator air 

temperature drop, ∆TLL – liquid line temperature drop ........................................................ 27 

Figure 4.6. Variation of system performance with regard to outdoor air temperature under nofault conditions: From the top left to right: QEA,sens – indoor air sensible capacity, 

QEA,lat – indoor air latent capacity, SHREA – indoor air sensible heat ratio, mR – 

refrigerant mass flow rate, QCR – condenser refrigerant-side capacity, QER – 

evaporator refrigerant-side capacity, Wcmp – compressor work, EER – energy 

efficiency ratio ..................................................................................................................... 28 

Figure 5.1. Residuals for selected feature with compressor fault. From the top left to right: TER

– evaporator exit saturation temperature; ∆Tsh – evaporator exit superheat, TDW – 

compressor discharge wall temperature, TCR – condenser inlet saturation 
vi

temperature, ∆Tsc – liquid line subcooling, TCA – condenser air temperature rise, 

∆TEA – evaporator air temperature drop, ∆TLL – liquid line temperature drop..................... 30 

Figure 5.2. Variation of selected performance parameters with a compressor fault. From the top 

left to right: QEA,sens – indoor air sensible capacity, QAE,lat – indoor air latent capacity, 

SHR – indoor air sensible heat ratio, mR – refrigerant mass flow rate, QCR – 

condenser refrigerant-side capacity; QER – evaporator refrigerant-side capacity; 

Wcomp – compressor work; EER – energy efficiency ratio.................................................... 31 

Figure 5.3. Residuals for selected features with the improper indoor air flow rate fault. From 

the top left to right: TER – evaporator exit saturation temperature, ∆Tsh – evaporator 

exit superheat, TDW – compressor discharge wall temperature, TCR – condenser inlet 

saturation temperature, ∆Tsc – liquid line subcooling, TCA – condenser air 

temperature rise, ∆TEA – evaporator air temperature drop, ∆TLL – liquid line 

temperature drop .................................................................................................................. 33 

Figure 5.4. Variation of selected performance parameters with the improper indoor air flow rate 

fault. From the top left to right: QEA,sens – indoor air sensible capacity, QAE,lat – 

indoor air latent capacity, SHR – indoor air sensible heat ratio, mR – refrigerant 

mass flow rate, QCR – condenser refrigerant-side capacity, QER – evaporator 

refrigerant-side capacity, Wcomp – compressor work, EER – energy efficiency ratio........... 34 

Figure 5.5. Residuals for selected features with the improper indoor air flow rate fault. From 

the top left to right: TER – evaporator exit saturation temperature, ∆Tsh – evaporator 

exit superheat, TDW – compressor discharge wall temperature, TCR – condenser inlet 

saturation temperature, ∆Tsc – liquid line subcooling, TCA – condenser air 

temperature rise, ∆TEA – evaporator air temperature drop, ∆TLL – liquid line 

temperature drop .................................................................................................................. 36 

Figure 5.6. Selected performance parameters with the improper indoor air flow rate fault. From 

the top left to right: QEA,sens – indoor air sensible capacity, QAE,lat – indoor air latent 

capacity, SHR – indoor air sensible heat ratio, mR – refrigerant mass flow rate, QCR

– condenser refrigerant-side capacity, QER – evaporator refrigerant-side capacity, 

Wcomp – compressor work, EER – energy efficiency ratio.................................................... 37 

Figure 5.7. Residuals of selected features with the liquid line restriction fault. From the top left 

to right: TER – evaporator exit saturation temperature, ∆Tsh – evaporator exit 

superheat, TDW – compressor discharge wall temperature, TCR – condenser inlet 

saturation temperature, ∆Tsc – liquid line subcooling, TCA – condenser air 

temperature rise, ∆TEA – evaporator air temperature drop, ∆TLL – liquid line 

temperature drop .................................................................................................................. 38 

Figure 5.8. Selected performance parameters with the liquid line restriction fault. From the top 

left to right: QEA,sens – indoor air sensible capacity, QAE,lat – indoor air latent capacity, 

SHR – indoor air sensible heat ratio, mR – refrigerant mass flow rate, QCR – 

condenser refrigerant-side capacity, QER – evaporator refrigerant-side capacity, 

Wcomp – compressor work, EER – energy efficiency ratio.................................................... 39 

Figure 5.9. Residuals for selected features with refrigerant undercharge fault. From the top left 

to right: TER – evaporator exit saturation temperature, ∆Tsh – evaporator exit 

superheat, TDW – compressor discharge wall temperature, TCR – condenser inlet 

saturation temperature, ∆Tsc – liquid line subcooling, TCA – condenser air 

temperature rise, ∆TEA – evaporator air temperature drop, ∆TLL – liquid line 

temperature drop .................................................................................................................. 41 
vii

Figure 5.10. Residuals for selected features with refrigerant overcharge fault. From the top left 

to right: TER – evaporator exit saturation temperature, ∆Tsh – evaporator exit 

superheat, TDW – compressor discharge wall temperature, TCR – condenser inlet 

saturation temperature, ∆Tsc – liquid line subcooling, TCA – condenser air 

temperature rise, ∆TEA – evaporator air temperature drop, ∆TLL – liquid line 

temperature drop .................................................................................................................. 42 

Figure 5.11. Selected performance parameters with respect to the refrigerant charge level. From 

the top left to right: QEA,sens – indoor air sensible capacity, QAE,lat – indoor air latent 

capacity, SHR – indoor air sensible heat ratio, mR – refrigerant mass flow rate, QCR

– condenser refrigerant-side capacity, QER – evaporator refrigerant-side capacity, 

Wcomp – compressor work, EER – energy efficiency ratio.................................................... 43 

Figure 5.12. Residuals for selected features with non-condensable gas fault. From the top left to 

right: TER – evaporator exit saturation temperature, ∆Tsh – evaporator exit superheat, 

TDW – compressor discharge wall temperature, TCR – condenser inlet saturation 

temperature, ∆Tsc – liquid line subcooling, TCA – condenser air temperature rise, 

∆TEA – evaporator air temperature drop, ∆TLL – liquid line temperature drop..................... 45 

Figure 5.13. Selected performance parameters with non-condensable gas fault. From the top left 

to right: QEA,sens – indoor air sensible capacity, QAE,lat – indoor air latent capacity, 

SHR – indoor air sensible heat ratio, mR – refrigerant mass flow rate, QCR – 

condenser refrigerant-side capacity, QER – evaporator refrigerant-side capacity, 

Wcomp – compressor work, EER – energy efficiency ratio.................................................... 46 

Figure 5.14. Residuals for selected features for different faults. From the top left to right: TER – 

evaporator exit saturation temperature, ∆Tsh – evaporator exit superheat, TDW – 

compressor discharge wall temperature, TCR – condenser inlet saturation 

temperature (Test #5: 27.8 °C (82.0 °F) outdoor dry bulb temperature, 26.7 °C 

(80.0 °F) indoor dry bulb temperature and 50 % indoor relative humidity.......................... 48 

Figure 5.15. Residuals for selected features for different faults. From the top left to right: ∆Tsc – 

liquid line subcooling, ∆TCA – condenser air temperature rise, ∆TEA – evaporator air 

temperature drop, ∆TLL – liquid line temperature drop (Test #5: 27.8 °C (82.0 °F) 

outdoor dry bulb temperature, 26.7 °C (80.0 °F) indoor dry bulb temperature and 

50 % indoor relative humidity) ........................................................................................... 49 

Figure 5.16. Residuals for selected performance parameters for different faults. From the top left 

to right: QEA,sens – indoor air sensible capacity, QAE,lat – indoor air latent capacity; 

SHR – indoor air sensible heat ratio, mR – refrigerant mass flow rate (Test #5: 

27.8 °C (82.0 °F) outdoor dry bulb temperature, 26.7 °C (80.0 °F) indoor dry bulb 

temperature and 50 % indoor relative humidity) ................................................................. 50 

Figure 5.17. Residuals for selected performance parameters for different faults. From the top left 

to right: QCR – condenser refrigerant-side capacity, QER – evaporator refrigerant-side 

capacity, Wcomp – compressor work, EER – energy efficiency ratio (Test #5: 27.8 °C 

(82.0 °F) outdoor dry bulb temperature, 26.7 °C (80.0 °F) indoor dry bulb 

temperature and 50 % indoor relative humidity) ................................................................. 52 

Figure 5.18. Variation of evaporator sensible capacity (QEA,sens) at different faults. From the top 

left to right: compressor fault (CMF), improper outdoor air flow rate (CF), improper 

indoor air flow rate (EF), liquid line restriction (LL), refrigerant overcharge (OC), 

refrigerant undercharge (UC), and presence of non-condensable gases (NON) ................. 54 
viii

Figure 5.19. Variation of evaporator latent capacity (QEA,lat) at different faults. From the top left 

to right: compressor fault (CMF), improper outdoor air flow rate (CF), improper 

indoor air flow rate (EF), liquid line restriction (LL), refrigerant overcharge (OC), 

refrigerant undercharge (UC), and presence of non-condensable gases (NON) ................. 55 

Figure 5.20. Variation of indoor air sensible heat ratio (SHR) at different faults. From the top 

left to right: compressor fault (CMF), improper outdoor air flow rate (CF), improper 

indoor air flow rate (EF), liquid line restriction (LL), refrigerant overcharge (OC), 

refrigerant undercharge (UC), and presence of non-condensable gases (NON) ................. 56 

Figure 5.21. Variation of refrigerant mass flow rate (mR) at different faults. From the top left to 

right: compressor fault (CMF), improper outdoor air flow rate (CF), improper 

indoor air flow rate (EF), liquid line restriction (LL), refrigerant overcharge (OC), 

refrigerant undercharge (UC), and presence of non-condensable gases (NON) ................. 57 

Figure 5.22. Variation of condenser refrigerant-side capacity (QCR) at different faults. From the 

top left to right: compressor fault (CMF), improper outdoor air flow rate (CF), 

improper indoor air flow rate (EF), liquid line restriction (LL), refrigerant 

overcharge (OC), refrigerant undercharge (UC), and presence of non-condensable 

gases (NON) ........................................................................................................................ 58 

Figure 5.23. Variation of evaporator refrigerant-side capacity (QER) at different faults. From the 

top left to right: compressor fault (CMF), improper outdoor air flow rate (CF), 

improper indoor air flow rate (EF), liquid line restriction (LL), refrigerant 

overcharge (OC), refrigerant undercharge (UC), and presence of non-condensable 

gases (NON) ........................................................................................................................ 59 

Figure 5.24. Variation of compressor work (Wcmp) at different faults. From the top left to right: 

compressor fault (CMF), improper outdoor air flow rate (CF), improper indoor air 

flow rate (EF), liquid line restriction (LL), refrigerant overcharge (OC), refrigerant 

undercharge (UC), and presence of non-condensable gases (NON) ................................... 60 

Figure 5.25. Variation of energy efficiency ratio (EER) at different faults. From the top left to 

right: compressor fault (CMF), improper outdoor air flow rate (CF), improper 

indoor air flow rate (EF), liquid line restriction (LL), refrigerant overcharge (OC), 

refrigerant undercharge (UC), and presence of non-condensable gases (NON) ................. 61 

Figure 5.26. Real-time transient test of on-off cyclic operation with different turn-off intervals at 

the 20 % fault of refrigerant undercharge fault (Test #8: 37.8 °C (100.0 °F) outdoor 

dry bulb temperature, 21.1 °C (70.0 °F) indoor dry bulb temperature and 50 % 

indoor relative humidity) ..................................................................................................... 63 

Figure 5.27. Time variation of measurements during on-off cyclic operation with different turnoff intervals at the normal refrigerant charge (Test #8: 37.8 °C (100.0 °F) outdoor 

dry bulb temperature, 21.1 °C (70.0 °F) indoor dry bulb temperature and 50 % 

indoor relative humidity) ..................................................................................................... 64 

Figure 5.28. Time variation of measurements during on-off cyclic operation with different 

refrigerant charge levels (Turn-off period: 24 minutes, Test #8: 37.8 °C (100.0 °F) 

outdoor dry bulb temperature, 21.1 °C (70.0 °F) indoor dry bulb temperature and 

50 % indoor relative humidity) ........................................................................................... 66 

Figure C.1. Selected parameters from the no-fault tests. From the top left to right: SCFMCA – 

outdoor air flow rate, φEAI – indoor air inlet relative humidity, TEAOD – indoor air 

exit dew point temperature, φEAO – indoor air exit relative humidity, SCFMEA – 
ix

indoor air flow rate, TSW – compressor suction wall temperature, TCRI – condenser 

refrigerant inlet temperature, PCRI – condenser refrigerant inlet pressure............................ 78 

Figure C.2. Selected parameters from the no-fault tests. From the top left to right: TCRO,sat – 

condenser refrigerant exit saturation temperature, ∆PCR – condenser refrigerant 

pressure drop, PTXV,up – TXV upstream pressure, ∆PLL – liquid line pressure drop; 

TERI – evaporator refrigerant inlet temperature, PERO – evaporator refrigerant exit 

pressure, ∆PER – evaporator refrigerant pressure drop, ∆Tsh – ∆Tsc...................................... 79 

Figure C.3. Selected parameters with the compressor/reversing valve leakage fault. From the 

top left to right: SCFMCA – outdoor air flow rate, φEAI – indoor air inlet relative 

humidity, TEAOD – indoor air exit dew point temperature, φEAO – indoor air exit 

relative humidity, SCFMEA – indoor air flow rate, TSW – compressor suction wall 

temperature, TCRI – condenser refrigerant inlet temperature, PCRI – condenser 

refrigerant inlet pressure....................................................................................................... 80 

Figure C.4. Selected parameters with the compressor/reversing valve leakage fault. From the 

top left to right: TCRO,sat – condenser refrigerant exit saturation temperature, ∆PCR – 

condenser refrigerant pressure drop, PTXV,up – TXV upstream pressure, ∆PLL – liquid 

line pressure drop; TERI – evaporator refrigerant inlet temperature, PERO – 

evaporator refrigerant exit pressure, ∆PER – evaporator refrigerant pressure drop, 

∆Tsh – ∆Tsc ............................................................................................................................ 81 

Figure C.5. Selected parameters with the improper outdoor flow rate fault. From the top left to 

right: SCFMCA – outdoor air flow rate, φEAI – indoor air inlet relative humidity, 

TEAOD – indoor air exit dew point temperature, φEAO – indoor air exit relative 

humidity, SCFMEA – indoor air flow rate, TSW – compressor suction wall 

temperature, TCRI – condenser refrigerant inlet temperature, PCRI – condenser 

refrigerant inlet pressure....................................................................................................... 82 

Figure C.6. Selected parameters with the improper outdoor flow rate fault. From the top left to 

right: TCRO,sat – condenser refrigerant exit saturation temperature, ∆PCR – condenser 

refrigerant pressure drop, PTXV,up – TXV upstream pressure, ∆PLL – liquid line 

pressure drop; TERI – evaporator refrigerant inlet temperature, PERO – evaporator 

refrigerant exit pressure, ∆PER – evaporator refrigerant pressure drop, ∆Tsh – ∆Tsc ............ 83 

Figure C.7. Selected parameters with the improper indoor flow rate fault. From the top left to 

right: SCFMCA – outdoor air flow rate, φEAI – indoor air inlet relative humidity, 

TEAOD – indoor air exit dew point temperature, φEAO – indoor air exit relative 

humidity, SCFMEA – indoor air flow rate, TSW – compressor suction wall 

temperature, TCRI – condenser refrigerant inlet temperature, PCRI – condenser 

refrigerant inlet pressure....................................................................................................... 84 

Figure C.8. Selected parameters with the improper indoor flow rate fault. From the top left to 

right: TCRO,sat – condenser refrigerant exit saturation temperature, ∆PCR – condenser 

refrigerant pressure drop, PTXV,up – TXV upstream pressure, ∆PLL – liquid line 

pressure drop; TERI – evaporator refrigerant inlet temperature, PERO – evaporator 

refrigerant exit pressure, ∆PER – evaporator refrigerant pressure drop, ∆Tsh – ∆Tsc............. 85 

Figure C.9. Selected parameters with the liquid line restriction fault. From the top left to right: 

SCFMCA – outdoor air flow rate, φEAI – indoor air inlet relative humidity, TEAOD – 

indoor air exit dew point temperature, φEAO – indoor air exit relative humidity, 
x

SCFMEA – indoor air flow rate, TSW – compressor suction wall temperature, TCRI – 

condenser refrigerant inlet temperature, PCRI – condenser refrigerant inlet pressure........... 86 

Figure C.10. Selected parameters with the liquid line restriction fault. From the top left to right: 

TCRO,sat – condenser refrigerant exit saturation temperature, ∆PCR – condenser 

refrigerant pressure drop, PTXV,up – TXV upstream pressure, ∆PLL – liquid line 

pressure drop; TERI – evaporator refrigerant inlet temperature, PERO – evaporator 

refrigerant exit pressure, ∆PER – evaporator refrigerant pressure drop, ∆Tsh – ∆Tsc............. 87 

Figure C.11. Selected parameters with the refrigerant undercharge/overcharge fault. From the 

top left to right: SCFMCA – outdoor air flow rate, φEAI – indoor air inlet relative 

humidity, TEAOD – indoor air exit dew point temperature, φEAO – indoor air exit 

relative humidity, SCFMEA – indoor air flow rate, TSW – compressor suction wall 

temperature, TCRI – condenser refrigerant inlet temperature, PCRI – condenser 

refrigerant inlet pressure....................................................................................................... 88 

Figure C.12. Selected parameters with the refrigerant undercharge/overcharge fault. From the 

top left to right: TCRO,sat – condenser refrigerant exit saturation temperature, ∆PCR – 

condenser refrigerant pressure drop, PTXV,up – TXV upstream pressure, ∆PLL – liquid 

line pressure drop; TERI – evaporator refrigerant inlet temperature, PERO – 

evaporator refrigerant exit pressure, ∆PER – evaporator refrigerant pressure drop, 

∆Tsh – ∆Tsc ............................................................................................................................ 89 

Figure C.13. Selected parameters with the non-condensable gas fault. From the top left to right: 

SCFMCA – outdoor air flow rate, φEAI – indoor air inlet relative humidity, TEAOD – 

indoor air exit dew point temperature, φEAO – indoor air exit relative humidity, 

SCFMEA – indoor air flow rate, TSW – compressor suction wall temperature, TCRI – 

condenser refrigerant inlet temperature, PCRI – condenser refrigerant inlet pressure........... 90 

Figure C.14. Selected parameters with the non-condensable gas fault. From the top left to right: 

TCRO,sat – condenser refrigerant exit saturation temperature, ∆PCR – condenser 

refrigerant pressure drop, PTXV,up – TXV upstream pressure, ∆PLL – liquid line 

pressure drop; TERI – evaporator refrigerant inlet temperature, PERO – evaporator 

refrigerant exit pressure, ∆PER – evaporator refrigerant pressure drop, ∆Tsh – ∆Tsc............. 91 
xi

NOMENCLATURE 

Symbols 

a coefficient of multivariate polynomial 

COP Coefficient of Performance (–) 

EER Energy Efficiency Ratio (Btu/ (W h)) 

h specific enthalpy, kJ/kg (Btu/lbm) 

k specific instant of kth time interval 

mR refrigerant mass flow rate, kg/h (lbm/h) 

m average 

n number of data samples in a moving window 

P pressure, kPa (psia) 

PTXV,up upstream pressure of TXV, kPa (psia) 

∆PCR condenser refrigerant side pressure drop, Pa (psid) 

∆PER evaporator refrigerant side pressure drop, Pa (psid) 

∆PLL liquid line pressure drop, Pa (psid) 

Q capacity, W (Btu/h) 

QCA condenser air-side capacity, W (Btu/h) 

QCR condenser refrigerant-side capacity, W (Btu/h) 

QEA evaporator air-side capacity, W (Btu/h) 

QER evaporator refrigerant-side capacity, W (Btu/h) 

QEA,lat indoor air latent capacity, W (Btu/h) 

QEA,sens indoor air sensible capacity, W (Btu/h) 

R residual of features 

R*

 normalized residual 

SCFM air side flow rate (ft3

/min, scfm) 

SEER Seasonal Energy Efficiency Ratio (Btu/(W h)) 

SHR Sensible Heat Ratio (–) 

T temperature, °C (°F) 

TCR condenser inlet saturation temperature, °C (°F) 

TDW compressor discharge-line wall temperature, °C (°F) 

TEAID evaporator air inlet dewpoint temperature, °C (°F) 

TEAOD evaporator air exit dewpoint temperature, °C (°F) 

TER evaporator exit saturation temperature, °C (°F) 

TID indoor dry-bulb temperature, °C (°F) 

TIDP indoor dew-point temperature, °C (°F) 

TOD outdoor dry-bulb temperature, °C (°F) 

TSW compressor suction-line wall temperature, °C (°F) 

∆TCA condenser air temperature rise, °C (°F) 

∆TEA evaporator air temperature drop, °C (°F) 

∆TLL liquid line temperature drop, °C (°F) 

∆Tsc liquid line subcooling, °C (°F) 

∆Tsh evaporator exit superheat, °C (°F) 

v variance

Wcmp compressor work (W) 

x measured data 

x moving window average of measured data 

Greek symbols 
xii

φ feature or performance parameter 

φΕΑΙ evaporator air inlet relative humidity (–) 

φΕΑΟ evaporator air exit relative humidity (–) 

σ standard deviation 

Subscripts 

avg average 

cmp compressor 

CA outdoor air 

CAI outdoor air condenser inlet 

CAO outdoor air condenser exit 

CR condenser refrigerant 

CRI condenser refrigerant inlet 

CRO condenser refrigerant exit 

EA indoor air 

EAI indoor air evaporator inlet 

EAO indoor air evaporator exit 

ER evaporator refrigerant 

ERI evaporator refrigerant inlet 

ERO evaporator refrigerant exit 

DB dry bulb 

DP dew point 

ID indoor chamber 

OD outdoor chamber 

RH relative humidity 

sat saturation 

Abbreviations 

AC air conditioner 

CF condenser fouling (improper outdoor air flow) 

CMF compressor valve or 4-way reverse valve leakage fault 

DOE U.S. Department of Energy 

EF evaporator fouling (improper indoor air flow) 

EPA U.S. Environmental Protection Agency 

FDD fault detection and diagnosis 

HP heat pump 

HVAC heating, ventilating and air-conditioning 

IC improper charge of refrigerant 

LL liquid line restriction fault 

NON presence of non-condensable gas fault 

OC refrigerant overcharge 

RH relative humidity 

UC refrigerant undercharge 

TXV thermostatic expansion valve 
1

CHAPTER 1. RATIONALE FOR THE STUDY 

An increasing emphasis on energy saving and environmental conservation requires that air conditioners 

and heat pumps be highly efficient. To this end, several government initiatives have been undertaken. 

For example, the U.S. Environmental Protection Agency (EPA)’s Global Programs Division is 

responsible for the assessment of alternative refrigerant performance and enforcement of the Clean Air 

Act. Another prime example is the ENERGY STAR initiative, a program formulated by the EPA/Climate 

Protection Partnerships Division and the Department of Energy (DOE), which promotes products that 

offer energy efficiency gains and pollution reduction. Directly affecting residential equipment, a recent 

DOE regulation imposes a 30 % increase in the minimum seasonal energy efficiency ratio (SEER) for 

central air conditioners, from 10.0 to 13.0, beginning January 23, 2006 (Federal Register, 2001). 

To assure that heating, ventilating, air-conditioning (HVAC) equipment operates in the field at its design 

efficiency, the efforts exerted by equipment manufacturers to improve equipment SEER must be 

paralleled in the field by good equipment installation and maintenance practices. However, a survey of 

over 55000 residential and commercial units found the refrigerant charge to be incorrect in more than 

60 % of the systems (Proctor, 2004). Another independent survey of 1500 rooftop units showed that the 

average efficiency was only 80 % of the expected value, primarily due to improper refrigerant charge 

(Rossi, 2004). A low refrigerant charge in the system may be due to a refrigerant leak or improper 

charging during system installation. While the most common concern about a refrigerant leak is that a 

greenhouse gas has been released to the atmosphere, a greater impact is caused by the additional CO2

emissions from fossil fuel power plants due to the lowered efficiency of the air-conditioning (AC) unit. 

Proctor’s survey shows a correlation between the quality of installation and technician training and 

supervision. Proper training of the technician is a necessary requirement for proper installation. But the 

survey also showed clearly that the number of return calls to correct improper installation was lowest 

when routine oversight of the installation work was provided, and that the number of faulty installations 

markedly increased when post-installation inspection visits were eliminated. At present, the homeowner 

has no quality assurance method for equipment installation as long as his/her comfort is not compromised. 

The goal of this project is to study and develop fault detection and diagnostic (FDD) methods which 

would provide a technician with a fault diagnosis and could alert a homeowner when performance of their 

AC unit falls below the expected range, either during commissioning or post-commissioning operation. 

For the homeowner, this FDD capability could be incorporated into a future smart thermostat where a 

readout on performance would allow basic oversight of the service done on the unit and register the 

effects of that service upon performance. 

The benefits of FDD methods for ACs and HPs are numerous and they include; 

- reduction of energy use 

- reduction in peak demand of electricity 

- reduction in CO2 emissions from fossil fuel power plants 

- reduction in refrigerant emissions from AC and HP systems 

- reduction in down time and maintenance cost 

- improvement of thermal comfort 

Arguably, development of FDD methods for split equipment presents unique challenges because these 

systems are assembled on site. Varied assembly skill levels and lack of attention to manufacturer 

recommendations is the prime reason that automated FDD methods be developed. FDD will provide 

“Automated Oversight” of servicing and warning of refrigerant charge loss, which is the most frequent 
2

problem in field assembled systems. It should be noted that the refrigerant leak problem may become 

even more frequent with the industry transition from medium pressure R22 to higher pressure R410A. 

Fault detection and diagnosis is accomplished by comparing a system’s current performance or 

parameters with those expected based on the measurements taken from the system when it was known to 

operate fault-free. Consequently, FDD method development includes a laboratory phase during which 

fault-free and faulty operations are mapped. The faults are artificially imposed to learn about the 

system’s response to them. The analytical phase, which follows, is concerned with using the obtained 

database to develop methods for fault detection and diagnosis. This report documents the laboratory 

phase of the FDD study carried out on a residential heat pump operating in the cooling mode. 

Fault detection and diagnosis has been effectively applied for some time in critical systems and processes, 

e.g., aerospace and nuclear industry applications, and in chemical processes. FDD methods for 

HVAC&R systems have been under development since the late 1980’s (McKellar, 1987; Pape et al., 

1991; Grimmelius et al., 1995; Stylianou and Nikanpour, 1996). The majority of the early research was 

devoted to variable air volume air-handling units. On the vapor-compression side, most work was 

devoted to large systems, particularly to water chillers and single-package air conditioners (Rossi and 

Braun, 1997; Castro, 2002; Li and Braun, 2003), while split air-conditioning and commercial refrigeration 

systems received little attention. 
3

CHAPTER 2. LITERATURE REVIEW 

2.1 Research Background 

Due to explosively growing energy needs and the global warming problem, energy conservation has 

become a top priority. For the heating, ventilating, air-conditioning, and refrigerating (HVAC&R) 

industry, research has been concentrating on the development of new air-conditioning technologies and 

improving the energy efficiency of existing vapor compression system designs. 

FDD systems were originally developed for the purpose of safety for nuclear power plants or aircraft 

(Braun, 1999). In such applications, FDD systems are equipped for fail-safe operation disregarding cost. 

On the other hand, a number of recent industrial applications pursue the reduction of total costs related to 

equipment downtime, service costs, and utility costs. FDD systems may be applied to reduce costs 

associated with all of these concerns. 

As a result of the decreasing price of sensors and microprocessors, developers can affordably apply FDD 

systems to automatic management of even non-critical HVAC&R systems. In addition, remote 

management systems are being developed using information-based network approaches to increase 

energy efficiency (Snoonian, 2003). A number of recent research efforts for optimized management 

systems are being carried out in order to reduce energy consumption (Brownell et al., 1999; Seem et al., 

1999; Hayter et al., 1999; Breuker et al., 2000; Roth et al., 2005) 

Generally, optimized management systems require the monitored equipment to perform their regular 

operation without any failure or fault. It is quite possible that the management system may not perform as 

desired due to internal faults. For difficult cases, some faults that have been neglected or considered as 

negligible may reveal a fatal problem that requires a costly repair. Therefore, to protect the system from 

catastrophic failure or performance degradation caused by various faults, it is desirable to introduce the 

concept of fault detection and diagnostic (FDD) systems to this equipment. To do this, the real time 

behaviors of residential air-conditioning units should be continuously monitored. Recently, research 

interests have focused on environmentally-benign household configurations, which encompass the FDD 

system as an active part of an automated building management system (Wang et al., 2000; Wu and Wang, 

2002). 

The energy savings attributable to FDD depends on the frequency and severity of faults. A brief note 

based on interviews with practicing engineers and contractors reported that inefficient operation wastes at 

least 20 % to 30 % of the entire HVAC energy consumption (Westphalen et al., 2003). For rooftop airconditioning units, the average efficiency was estimated at 80 % of the expected value. Approximately 

50 % of installations were reported to have efficiency of 80 % or less and 20 % of installations had 

efficiency of 70 % or less (Rossi, 2004). 

Proctor (2004) surveyed over 55,000 commercial and residential air-conditioning units in California. 

Proctor reported that residential systems are better managed than commercial systems; however, their 

overall quality control was poor. From the report, 95 % of residential units failed the diagnostic test. The 

main reasons causing the failures are listed as duct leakage, poor insulation, resistance to air flow, 

improper refrigerant charge, low evaporator air flow, over-sized units, or non-condensables in the 

refrigerant. Furthermore, the refrigerant charge in residential air-conditioning units was incorrect 62 % of 

the time, and charge in commercial units was incorrect 60 % of the time. Proctor also provided other 

survey results concerning improper installation and management problems. Proctor’s survey shows a 

correlation between the quality of installation and the technician’s training and supervision. 
4

Figure 2.1 represents national energy flow for the United States in 2004 (DOE/EIA-0384, 2005). 

Numbers by sectors represent units of energy in quads (1 quad = 1 quadrillion BTU = 1 × 1015 BTU = 

1.055 × 1015 kJ). Although residential and commercial energy demand occupies approximately 40 % of 

national energy demand, it has received less attention than industrial demand. Considering that some 

small commercial users utilize residential HVAC systems, energy savings efforts should be increased for 

residential HVAC systems. Proper commissioning of HVAC equipment could typically reduce annual 

energy consumption by 5 % to 30 % depending on the building type (Roth et al., 2003). It could reduce 

commercial building HVAC energy consumption by about 0.5 quads. Based upon national energy 

consumption of approximately 100 quads annually, Figure 2.1, the total savings can be estimated at 1 % 

to 2 % including residential and commercial demands. 

Figure 2.1. Energy flow of the United States in 2004. Units in quadrillion BTU (DOE/EIA-0384, 2005) 
5

2.2 Previous Research 

Initial FDD research in the HVAC&R field was performed for variable air volume air-handling units and 

chillers. During the development of the first FDD techniques, energy savings was a secondary 

consideration to preventing equipment malfunction. Anderson et al. (1989) studied statistical analysis 

preprocessors and rule based expert systems to monitor and diagnose HVAC systems. Pape et al. (1991) 

developed a methodology for fault detection in HVAC systems based on optimal control. In order to 

detect faults in system operation, deviation from optimal performance was sensed by comparing the 

measured system power with the power predicted using the optimal control strategy. Norford and Little 

(1993) presented a method for diagnosing faults in HVAC systems using parametric models of consumed 

electric power. 

Lee et al. (1996a) represented a scheme for detecting faults in an air-handling unit using recursive 

parameter identification methods. One approach used in that study was to define residuals that represent 

the difference between the existing state of the system and the normal state. Residuals that are 

significantly different from zero represent the occurrence of a fault. In a successive investigation by Lee 

et al. (1996b), they described the application of an artificial neural network to the problem of fault 

diagnosis. If the system being monitored is complex, isolating the fault can be challenging, and 

diagnostic tools should be more adaptable for this purpose. They showed that the artificial neural 

network method can be a good solution to such problems. 

Peitsman and Bakker (1996) applied a black-box model to an HVAC system for fault detection. Multiinput and single-output (MISO) autoregressive with exogenous input models and artificial neural network 

models are used in the study. The whole HVAC system is regarded as a block box instead of as a 

collection of component models. With the component model type, the components of the HVAC system 

are regarded as separate black boxes. 

Only recently have investigators begun to examine FDD techniques for vapor compression systems rather 

than the broader area of the whole HVAC system. FDD for vapor compression systems was initially 

intended to help technicians servicing individual vapor compression systems. Grimmelius (1995) 

developed an on-line failure diagnosis system for a vapor compression refrigeration system used in a 

naval vessel or a refrigerated plant. He established a symptom matrix based on the combination of casual 

analysis, expert knowledge, and simulated failure modes. Using fuzzy logic, a real-time recognition of 

the failure model was suggested. The author commented on the need to develop more general skills for 

reference state estimation, on insensitive pattern recognition routines for failure models, and on transient 

diagnostic models. 

Stylianou and Nikanpour (1996) represented a methodology using thermodynamic modeling, pattern 

recognition, and expert knowledge to determine the health of a reciprocating chiller and to diagnose 

selected faults. The authors suggested three fault detection modules for startup, stop, and steady-state 

operations based on a thermodynamic model and expert knowledge of the chiller. They tried to deal with 

the sensor drift fault when the chiller was off. In a successive investigation, Stylianou (1997) presented a 

fault diagnostic methodology using a Bayesian decision rule which assigned different faults, including 

no-fault, status to single classes. 

Rossi and Braun (1997) developed a statistical FDD method for a roof-top air conditioner. The fault 

diagram was developed with temperature measurements. The residual values are used as performance 

indices for both fault detection and diagnosis. Statistical properties of the residuals for current and 

normal operation are used to classify the current operation as faulty or normal. Five kinds of faults can be 

distinguished from the diagnosis. They suggested a fault detection classifier and a fault diagnostic 
6

classifier. The fault detection classifier module was based on a Bayesian decision rule, and the fault 

diagnostic classifier module was developed assuming individual features as a series of independent 

probabilistic accidents. 

Breuker and Braun (1998) surveyed frequently occurring faults for a packaged air conditioner using field 

data. Based on the field data, Breuker and Braun sorted field faults into three different categories 

according to the cause of the fault, service frequency, and service cost. With respect to the cause of the 

fault, system shutdown failures were caused by electrical or control problems approximately 40 % of the 

time and mechanical problems approximately 60 % of the time. When sorted by service frequency, 

refrigerant leakage occurs most frequently, followed by condenser, air handling, evaporator, and 

compressor faults. When sorted by service cost, compressor failure contributes 24 % of total service costs. 

Control related faults contribute 10 % of total service costs. 

Chen and Braun (2001) developed a simplified FDD method for a 17.6 kW (5 ton) rooftop air conditioner 

with a TXV. They modified an FDD technique by simplifying Rossi and Braun’s method (1997). They 

used measurements and model predictions of temperatures for normal system operation to compute ratios 

which were sensitive to individual faults. They also proposed a simple rule-based FDD process of 

sequential rules developed by comparing the sensitivity of residuals organized within a fault characteristic 

chart. 

Castro (2001) applied a k-nearest neighbor and k-nearest prototype method for fault detection of a chiller. 

The author calculated Euclidean distances for the current state based on the selected two largest residuals, 

and estimated the possibility of a fault from the distance information. In this research, the software 

MATCH was developed as a tool for the controls package to combine monitoring, fault detection, and 

diagnostic features. After detecting faults, data deemed faulty were input to the rule-based fault diagnosis 

algorithm. Castro preferred the nearest prototype classifier since the nearest neighbor classifier is more 

computationally intensive. 

Comstock and Braun (2001) tested eight common faults in a 316 kW (90 ton) centrifugal chiller to 

identify the sensitivity of different measurements to faults. The identification of common faults was 

determined through a fault survey among major American chiller manufacturers. The fault testing led to a 

set of generic rules for the impacts of faults on measurements that could be used for FDD. Impact of 

faults on cooling capacity and coefficient of performance were also evaluated. 

Smith and Braun (2003) performed field-site tests on more than 20 units to identify local installation and 

operation problems. Using a 10.6 kW (3 ton) rooftop unit with a fixed orifice expansion device and a 

17.6 kW (5 ton) unit with a TXV, the FDD problem was formulated in a mathematical way and a 

decoupling based unified FDD technique was proposed to handle multiple simultaneous faults. Li (2004) 

re-examined the statistical rule-based method initially formulated by Rossi and Braun (1997) and 

presented two additional FDD schemes which improved the sensitivity of the FDD module. He also 

provided virtual sensors to estimate characteristic parameters from indirect component modeling. For a 

reference model, Li combined a multivariate polynomial model and a generalized regressive neural 

network (GRNN). 

Kim and Kim (2005) tested a water-to-water heat pump system with a variable speed compressor and an 

electrical expansion valve (EEV). From the research, the system parameters are found to be less sensitive 

to faults compared to a constant speed compressor system. They reported that controlling the compressor 

speed suppressed the changeability of the system. They also provided an FDD algorithm along with two 

different rule-based charts depending on the compressor status. Kim and Kim suggested that COP 
7

degradation due to a fault is much more severe with a variable speed compressor than with a constant 

speed compressor. 

2.3 Research Objective 

The objective of this research was to test a heat pump operating in the cooling mode in order to map 

system parameters during no-fault and imposed-fault operation. System status was monitored, and 

performance parameters were recorded. Seven faults were imposed: 1) compressor valve leakage, 2) 

outdoor improper air flow, 3) indoor improper air flow, 4) liquid line restriction, 5) refrigerant 

undercharge, 6) refrigerant overcharge, and 7) presence of non-condensable gas. The follow-up study 

will use the collected results for the development of FDD methods. 
8

 CHAPTER 3. EXPERIMENTAL SETUP AND TEST PROCEDURE 

3.1 System Selected for Testing 

The studied system was an R410A split residential heat pump of a 8.8 kW (2.5 ton) nominal cooling 

capacity and Seasonal Energy Efficiency Ratio (SEER) of 13. The unit is comprised of the indoor fancoil section, outdoor section with a compressor, a thermostatic expansion valve (TXV), and connecting 

tubing. Both the indoor and outdoor air-to-refrigerant heat exchangers were of the finned-tube type. The 

unit was installed in NIST’s environmental chambers and charged with refrigerant according to the 

manufacturer’s specifications. 

Figure 3.1 shows the outdoor section. A flow guide was attached to the top of the unit to aid in the 

traverse of a hot wire anemometer. The coil had 81 cm x 175 cm (32 in x 69 in) of finned area, with 7 

fins/cm (18 fins/in) of a wavy-lanced type fins. Figure 3.2 shows a schematic of the outdoor unit 

refrigerant circuitry. 

Figure 3.1. Side view of the outdoor section with the flow guide 

Figure 3.2. Circuitry of the outdoor coil 
9

Figure 3.3. Outdoor section dimensions 

The circles denote the tubes, the continuous lines indicate the return bends on the near side of the heat 

exchanger, and the broken lines indicate the return bends on the far side. As Figure 3.2 shows, the 

outdoor coil had five inlets and five outlets, i.e., it had five independent circuitry branches. Figure 3.3 

presents a graphical representation and dimensions of the outdoor unit. 

Figure 3.4 shows the side view of the indoor coil assembly. It comprised two identical slabs and was 

designed for air flow from the bottom to the top. The two slabs had an included angle of 60° in an Ashape. Each slab of the coil had 48.5 cm x 43 cm (19 in x 17 in) of finned area with 5 fins/cm 

(13 fins/inch) of the wavy-lanced type. Figure 3.5 shows the refrigerant circuitry for both slabs. Each 

slab had two inlets from the TXV and two outlets connected to the suction manifold. Figure 3.6 shows 

the configuration and outside dimensions of the indoor fan-coil unit. The air flow rate through the coil 

was approximately 28.3 m3

/min (1000.0 scfm). Fin thickness for both the indoor and outdoor coils was 

0.12 mm (0.0047 in). 
10

Figure 3.4. Side view of the indoor coil and upflow duct 

Figure 3.5. Circuitry of indoor coil 
11

Figure 3.6. Indoor fan-coil unit dimensions 

3.2 System Setup and Instrumentation 

Figure 3.7 shows the air duct arrangement in the indoor environmental chamber. The ductwork was 

constructed according to the applicable standards (ANSI/ASHRAE Standard 51, ANSI/ASHRAE 

Standard 37). The air was pulled through the test apparatus by a centrifugal fan located at the outlet of 

the nozzle chamber ductwork. Figure 3.8 shows the schematic diagram of the heat pump installation. On 

the air side, the setup involved measurements of dry-bulb and dew-point temperatures, barometric 

pressure and pressure drop. Dew-point temperature was measured at the inlet of the evaporator ductwork 

and downstream the evaporator and air mixers. Twenty-five node, T-type thermocouple grids and 

thermopiles measured air temperatures and temperature change, respectively. 

On the refrigerant side, pressure transducers and T-type thermocouple probes were attached at the inlet 

and exit of every component of the system to take the actual refrigerant pressure and temperature. The 

refrigerant mass flow rate was also measured using a Coriolis flow meter. The measurements of 

temperature, pressure, and mass flow rate took place in the locations indicated in Figure 3.8. The air 

enthalpy method served as the primary measurement of the system capacity, and the refrigerant enthalpy 

method served as the secondary measurement. These two measurements always agreed within 5 %. 

Additionally, compressor power was measured for calculations of the coefficient of performance (COP). 

Appendix A lists the measuring devices including the measurements shown in Figure 3.8. Table 3.1 lists 

characteristic uncertainties of the major quantities measured during this work. 

Table 3.1. Measurement uncertainties 

Measurement Range Total Uncertainty at the 95 % 

Confidence Level 

Individual Temperature -18 °C to 93 °C (0 °F to 200 °F) ±0.3 °C (±0.5 °F) 

Temperature Difference 0 °C to 28 °C (0 °F to 50 °F) ±0.3 °C (±0.5 °F) 

Air Nozzle Pressure 0 Pa to 1245 Pa (0 in H2O to 5.0 in H2O) ±1.0 Pa (±0.004 in H2O) 

Refrigerant Mass Flow Rate 0 kg/h to 544 kg/h (0 lbm/min to 20 lbm/min) ±1.0 % 

Dewpoint Temperature (32°F to 100 °F) ±0.4 °C (0.8 °F) 

Dry-Bulb Temperature (35 °F to 100 °F) ±0.4 °C (0.8 °F) 

Total Cooling Capacity (15 000 Btu/h to 36 000 Btu/h) 4.0 % 

COP 2.5 to 6.0 5.5 % 
12

∆P

Air Flow Meter 

(4 Nozzles)

Indoor Air-handler Fan

Mixer

Air Flow 

Exit Air Temperature

(Meshed Thermocouples)

INDOOR FAN COIL UNIT

Air Flow 

Inlet Air Temperature

(Meshed Thermocouples)

From OD

To O

NOZZLE CHAMBER D

Evaporator

Figure 3.7. Air duct arrangement in the indoor environmental chamber 
13

INDOOR

CHAMBER

OUTDOOR

CHAMBER

Evaporator

Condenser

Compressor

SCROLL

P 161

T 162

Tsat 160

Tsh 248 P 202

T 203

P 199

Tw 216

P 169

T 200

Tw 156

Mass flow meter

4-way Valve

∆P 213 ∆P 214

P 164

T 165

∆P 215

m 168

T avg(207:212)

T avg(217:218)

TDB 132=avg(1:25)

TDP 186

TDB 130=avg(32:44,46:56)

TDP 187

T 221

m 191

∆T 221

W 233

W 235

W 247=240-235

Theremostatic

Expansion Valve

T 138

P 174

T 175

Tsat 176

Tsh 177

P 171

T 172

Tsc 173

Figure 3.8. Experimental setup with the heat pump in the cooling mode 
14

3.3 Implementation of Artificial Faults 

Table 3.1 lists the seven types of common faults which were investigated in this study. The improper 

indoor air flow, liquid line restriction, refrigerant overcharge, refrigerant undercharge, and presence of a 

non-condensable gas (air) may result from improper installation. All faults in Table 3.1, except the 

presence of non-condensables, may also appear in the system after installation over the life of the heat 

pump. The respective causes may be compressor valve wear, outdoor coil fouling, a dirty air filter or coil 

fouling, dirty filter/dryer, improper recharge service, and a refrigerant leak. These seven faults and their 

implementation during tests are discussed in more detail in the sections below. 

Table 3.2. Description of studied faults 

Fault Abbr. Determination of level of fault during tests 

Compressor leakage (4-way valve leakage) CMF % of refrigerant flow rate 

Improper outdoor air flow rate CF % of coil area blocked 

Improper indoor air flow rate EF % of correct air flow rate 

Liquid line restriction LL % of normal pressure drop through TXV 

Refrigerant overcharge OC % overcharge from the correct charge 

Refrigerant undercharge UC % undercharge from the correct charge 

Presence of non-condensable gases NON % of non-condensable gas 

3.3.1 Compressor/reversing valve leakage 

Compressor faults can arise from various reasons: gas leakage, improper lubrication, motor failure, etc. 

Brueker and Braun (1998) indicated that approximately 70 % of the classified faults are associated with a 

motor problem; motor performance degradation may be a result of overloading due to condenser fouling 

or a high outdoor temperature. Unstable electrical power - such as high/low voltage and voltage spike - 

can also cause motor problems. 

The second major compressor fault is due to compressor valve leakage or other leakage which decreases 

the refrigerant mass flow rate. Wear and tear related to long-time operation of a reciprocating compressor 

may cause the refrigerant to leak through the suction or discharge valve. For scroll compressors, the 

refrigerant may leak in tangential directions through radial clearances between the neighboring pockets 

(flank leakage or tangential leakage) or in the radial direction through axial clearances between the 

rotating scroll and the body (tip leakage or radial leakage). Improper lubrication can degrade 

compressibility due to abrasion of contact surfaces like piston rings or cylinder walls. The internal 

bypasses can arise from the intrusion of liquid refrigerant into the compressor. When the system starts up 

at low ambient temperatures or has the following faults: evaporator/condenser fouling, refrigerant 

overcharge, or excessively opened TXV, the compressor suction chamber may be flooded by liquid 

refrigerant. When the liquid refrigerant intrudes repeatedly into the compressor cylinder, mechanical 

parts like valves, rods, and piston will be damaged. Each of these faults degrades compression efficiency, 

whereas fatal compressor breakdown may halt the entire system. 

In this research we simulated an internal leak in the compressor by implementing a hot gas bypass shown 

in Figure 3.9. For no-fault tests, the shut-off valve ensured no refrigerant flow through the bypass. 

During tests simulating a faulty compressor, fine tuning of the metering valve and a larger crude valve 

allowed establishment of a desired refrigerant flow rate through the bypass from the compressor discharge 

line to the suction line. 
15

We expressed the severity of the artificial compressor leak as the reduction of refrigerant mass flow rate 

as compared to a no-fault condition. For each operating condition we performed a no-fault test first (with 

the shut-off valve closed) to obtain the reference mass flow rate. Then, we activated the bypass, and 

measured the new refrigerant mass flow rate, which was used for calculating the fault level. Refrigerant 

leakage through a 4-way valve would affect the system performance similarly to the compressor leakage. 

Flow direction

Metering Valve

Shut-off Valve

Crude Valve

Figure 3.9. Hot gas bypass used for compressor/reversing valve leakage fault 

3.3.2 Improper outdoor air flow rate 

Outdoor sections are exposed to the outdoor environment and are easily contaminated by dirt or debris. 

Sometimes outdoor sections are surrounded by overgrown weeds or fallen leaves which restrict the air 

flow to the outdoor heat exchanger. The outdoor air flow may also decrease because of a defective fan 

motor, loose fan belt, or a poorly installed controller. 

We simulated fouling of the outdoor heat exchanger by blocking the bottom part of its finned area with 

paper strips. The fault level was the percentage of the outdoor coil face area blocked by paper. Figure 

3.10 shows the outdoor coil with a blockage or fault level of 35 %. 
16

35% Fault Level

Figure 3.10. Condenser with lower finned area blocked (35 % of the entire finned area blocked) 

3.3.3 Improper indoor air flow rate 

The air flow rate through the indoor section is affected by the size of ductwork, indoor fan sizing, and 

duct contamination. An improper duct design may burden the fan with an excessive load causing the fan 

to work below the nominal speed. Dust and debris collected on the heat exchanger may also result in a 

reduction in the air flow rate. Household articles like textile goods and carpets produce chemically 

reactive dust, and kitchens and baths also generate chemical vapor. If air filters are not maintained in 

good condition, these particles can flow into the ductwork and stick on the fan coil unit and duct walls 

reducing the air flow rate. 

For this study the no-fault, reference air mass flow rate was set to 28.3 m3

/min (1000 scfm). For faulty 

tests, we reduced the speed of the nozzle chamber fan at the end of ductwork (see Figure 3.7). The fault 

level was the percent change in air mass flow rate with respect to the reference mass flow rate measured 

at no-fault conditions. 

3.3.4 Liquid line restriction 

Typically, a filter/dryer is installed in the liquid line to remove moisture and any solid particles from the 

circulating refrigerant. Moisture may enter the system if a service technician does not follow good 

refrigerant charging practices during servicing, while some rust may exist in the system because of 

improper tube joinery technique. Accumulation of these substances will block the filter/dryer and unduly 

increase the refrigerant flow restriction. 
17

To simulate an increased liquid line flow restriction, we installed a shut-off valve and metering valve in 

the liquid refrigerant line in a parallel configuration displayed as shown in Figure 3.10. By modulating 

the two valves, we controlled the liquid line restriction. The level of the liquid line restriction fault was 

the percent change in the liquid line pressure drop with respect to the pressure differential between the 

condenser exit and the evaporator inlet at the no-fault condition. 

Figure 3.11. Artificial setup to implement a liquid line restriction fault using a shut-off valve and a 

metering valve 

3.3.5 Refrigerant undercharge and overcharge 

Residential systems are charge sensitive, i.e., their performance is influenced by the amount of refrigerant 

in the system. Refrigerant overcharge is a result of improper charging by a service technician. 

Refrigerant undercharge may result from improper charging or from a refrigerant leak. A rapid leak, 

caused by a component failure such as a fractured heat exchanger wall, is easy to detect because it 

degrades the system performance abruptly (a so called “hard fault”). A slow leak – e.g., due to a bad 

fitting in the refrigerant line where a small portion of refrigerant leaks for a long time – is typically 

difficult to detect, because the change in performance is slow and gradual (a so called “soft fault”). We 

simulated the overcharge and undercharge faults by adding or reducing the amount of refrigerant in the 

system. We determined the level of fault as the mass percentage of overcharged or undercharged 

refrigerant with respect to the optimized no-fault total refrigerant charge. 

The improper charge was set by adding more or less refrigerant to the system, but keeping the same 

amount of POE (polyester) oil. The charge level was established in reference to nominal charge, assumed 
18

as 100%. A charge of 4.65 kg of R410A was taken as reference following the manufacturer’s optimum 

charging criteria. 

3.3.6 Presence of non-condensable gases 

Before charging a system with a refrigerant, the system should be evacuated below 500 mTorr (0.02 inHg 

absolute) to remove the air and moisture. When a service technician uses a defective vacuum pump or 

does not operate it correctly, some air and moisture will remain in the system. This air may be 

particularly detrimental to systems using polyol ester lubricants, which absorb about 10 times more 

moisture from air than mineral oils and alkyl benzene. (For this reason polyol ester lubricants are 

packaged with a nitrogen blanket as a moisture barrier and are stored in metal containers rather than 

plastic since moisture migrates over time through plastic.) 

Non-condensable gases raise condensing pressure, which degrades the compressor efficiency and 

increases energy consumption. A TXV can malfunction at unduly elevated system pressures. The 

compressor can be damaged in an extreme case. 

In this research we injected dry nitrogen gas to simulate non-condensable gas intrusion into the system. 

Atmospheric pressure nitrogen was set as a 100 % fault level. Fault level was determined as the 

proportion of injected mass of nitrogen to the nitrogen mass constituting a 100 % fault (completely filling 

up the internal volume of the system at atmospheric pressure). 

3.4 Experimental Procedure and Test Conditions 

We executed a comprehensive test series to map the performance of the system at normal (no-fault) 

operation and with imposed faults. Table 3.2 presents operating conditions for the test program at nofault conditions. For indoor conditions, the test program included two temperatures, 21.1 °C (70.0 °F) 

and 26.7 °C (80.0 °F), and two levels of relative humidity, 50 % and dry coil. For outdoor conditions, we 

selected four temperatures: 21.1 °C (70.0 °F), 27.8 °C (82.0 °F), 32.2 °C (90.0 °F), and 37.8 °C 

(100.0 °F). Outdoor relative humidity is not an influential parameter for performance of the condenser, 

and it was controlled roughly around 50 % within the range of 40 % to 60 %. 

The test schedule for no-fault steady-state involved 17 indexed cases; one ARI 210/240 Standard rating 

test and 16 full factorial combinations of chamber conditions; 2 indoor temperatures × 2 indoor 

humidities × 4 outdoor temperatures = 16 tests. The fault tests were carried out for four operating 

conditions indicated in Table 3.2 by two asterisks (tests 4, 5, 8, and 9). All no-fault tests were performed 

twice to check experimental repeatability. In addition, a no-fault test preceded a series of tests carried out 

for a given fault at each of the four operating conditions. 

Table 3.3 shows the primary set of tests. The tests listed include the repeatability tests, and transient tests. 

In total, the table lists 257 tests. The installation of the system, measurements, and data reduction were 

performed according to the applicable standards (ASHRAE Standard 37, ARI 210/240 Standard). 
19

Table 3.3. Operating conditions for no-fault tests 

Indoor Outdoor Test 

index Dry-bulb temp. 

°C (°F) 

Relative humidity

% 

Dry-bulb temp. 

°C (°F) 

Relative humidity

% 

1* 26.7 (80.0) 50 35.0 (95.0) 40 to 60 

2 21.1 (70.0) 50 21.1 (70.0) 40 to 60 

3 26.7 (80.0) 50 21.1 (70.0) 40 to 60 

4** 21.1 (70.0) 50 27.8 (82.0) 40 to 60 

5** 26.7 (80.0) 50 27.8 (82.0) 40 to 60 

6 21.1 (70.0) 50 32.2 (90.0) 40 to 60 

7 26.7 (80.0) 50 32.2 (90.0) 40 to 60 

8** 21.1 (70.0) 50 37.8 (100.0) 40 to 60 

9** 26.7 (80.0) 50 37.8 (100.0) 40 to 60 

10 21.1 (70.0) dry coil 21.1 (70.0) 40 to 60 

11 26.7 (80.0) dry coil 21.1 (70.0) 40 to 60 

12 21.1 (70.0) dry coil 27.8 (82.0) 40 to 60 

13 26.7 (80.0) dry coil 27.8 (82.0) 40 to 60 

14 21.1 (70.0) dry coil 32.2 (90.0) 40 to 60 

15 26.7 (80.0) dry coil 32.2 (90.0) 40 to 60 

16 21.1 (70.0) dry coil 37.8 (100.0) 40 to 60 

17 26.7 (80.0) dry coil 37.8 (100.0) 40 to 60 

* ARI Standard 210/240 (2006) 

** Combination of test conditions selected for fault tests

Table 3.4. Primary tests 

Tests Types of tests Number of tests 

No-fault 16 82 

Individual faults 98 118 

Dynamic tests 6 12 

ARI check 5 5 

Total 177 257 
20

CHAPTER 4. NO-FAULT TESTS AND SYSTEM CHARACTERISTICS 

4.1 Identification of Steady State 

Most FDD schemes applied to various types of equipment detect and diagnose faults during steady-state 

operation. In this study, we envision the FDD process to be performed every time the system is in steady 

state, or more precisely, when the system is statistically identified to be nearly in a steady state. 

Steady state can be detected by observing the entire system, or – more simply – by monitoring selected 

system parameters. If the goal was to check the system performance, providing enough time to reach 

steady-state capacity could be a sufficient approach. However, reaching a steady capacity would not 

guarantee the actual steady state of all parameters used in a particular FDD scheme. Since steady-state 

schemes are widely used in fault detection, identification of steady-state operation is an important task for 

satisfactory FDD analysis. 

A steady-state detector makes the determination as to whether the system operates in a steady state. The 

concept of the steady-state detector originates from a noise filter. When parameter measurements are 

unstable, they are said to be affected by noise, or the system is regarded as being in a transient state. The 

standard deviation of these measurements indicates the statistical spread in the data distribution, and it can 

be used to characterize random variation of the measured signal. The system is far from steady-state 

operation when the standard deviation is large. There are many different ways to design a steady-state 

detector, but the most common ones have their roots in simple averaging over a predefined moving time 

window (see Figure 4.1). 

In this research, we selected the evaporator exit refrigerant superheat and liquid line refrigerant 

subcooling as the parameters used for steady-state detection. We applied a steady-state detector which 

uses the calculation of the mean and standard deviation of these parameters in a recursive fashion. A 

recursive solution depends on a previously calculated value. Suppose that at any instant k, the average of 

the latest n samples of a data sequence, xi, is given by, 

1

1

=−+

= ∑

k

k i

ikn

x x

n

 (4.1) 

t, time

n

n

n

k− n− 1 k− n k− n+1 k− 2 k− 1 k

Figure 4.1. Moving windows of n data points at near k

th time 
21

A difference between two averages of the latest n samples at the current time, k, and at the previous time 

instant, k −1, is, 

[ ]

1

1

1

1 1 −

− −

=−+ =−

⎡ ⎤ −= − = − ⎢ ⎥ ⎣ ⎦ ∑ ∑

k k

k k i i k kn

ikn ikn

xx x x xx

n n

 (4.2) 

Rearranged, the current average is calculated by, 

1 ( ) 1k k k kn =+ − − − xx xx

n

 (4.3) 

This approach is known as a moving window average because the average at each k

th instant is based on 

the most recent set of n values. In other words, at any instant, a moving window of n values is used to 

calculate the average of the next data sequence. 

A moving window variance can be defined similarly. Suppose the variance of the latest n samples is 

( )2 2 2

1 1

1 1

=−+ =−+

= −= − ∑ ∑

k k

k ik i k

ikn ikn

v xx x x

n n

. (4.4) 

Therefore, 

( ) ( ) 22 2 2

1 1

1

k k k kn k k =+ − −− − −− vv xx xx

n

 (4.5) 

Moving window standard deviation is given as 

σ k k = v . (4.6) 

The steady state detector identified steady-state operation if the standard deviations for the evaporator exit 

refrigerant superheat and liquid line refrigerant subcooling fell below the pre-specified threshold value of 

0.44 °C (0.8 °F). The size of the moving window was set to 5 samples at 78 second intervals. 

4.2 Variation of Measured Signals 

The performance of an FDD system is closely related to the performance of its sensors. Before 

developing any FDD system, required sensor accuracy and sensor cost should be evaluated. Cost issues 

are improving as new sensor technologies are developed; however, there always exist unavoidable 

uncertainties for measurement systems. 

Fundamentally, every sensor has its own uncertainty. When a system is tested with various measurement 

sensors, uncertainties such as random error (measurement noise, signal noise) and bias error (systematic 

error) may appear. Uncertainties due to signal noise can be classified as random error which is associated 

with noise from the instrumentation system and from short-term variations in the process being measured. 

Measurement noise is similar in shape to sound wave white noise. Normally measurement noise is less 

than other uncertainties, but in some cases the measurement noise may be severe, e.g., when electrical 

equipment such as inverters, turbines, and compressors generate strong electromagnetic fields. Some 
22

sensors are so sensitive to external noise that even slight interference can influence the measurement. In 

these cases, the sensor should be properly shielded from the noise in order to prevent the measurement 

from being distorted. 

In this research, test conditions are specified by three parameters: outdoor temperature, indoor 

temperature, and indoor humidity. Figure 4.2 shows the variation of indoor chamber temperature at a 

setpoint of 21.1 °C (70.0 °F). The data in the figure were collected after the system was at steady state. 

Figure 4.2(a) shows a 40 min variation of one of the temperature sensors at the inlet air duct 

thermocouple grid with a sampling interval of 78 s. As seen in the plot, indoor temperature is stabile but 

has fluctuation. In the fluctuation, the effect of random error is dominant compared to the thermocouple 

measurement total error, i.e., the measurement does not appear to have a bias error. Figure 4.2(b) shows 

indoor dry bulb temperature for 17 different experiments with a sampling size of 10 measurements. The 

indoor temperature setpoint was 21.1 °C (70.0 °F). The stepped horizontal solid lines represent the 

average of each experiment, and the thick solid line (m) is the overall average of the indoor temperature 

for all of the 17 experiments. 

4.3 Multivariate Polynomial Reference Model 

The objective of the no-fault tests was to take measurements at different environmental operating 

conditions at different system locations to formulate key systems parameters – referred to as features – 

and to develop models to correlate these parameters. In this research the outdoor dry-bulb temperature, 

TOD, indoor dry-bulb temperature, TID, and indoor dew-point temperature, TIDP, are the independent 

variables that define operating conditions. All features, φi, can be explicitly described by multivariate 

polynomials correlated to the no-fault experimental data. Equations 4.7a, 4.7b, and 4.7c represent general 

formulations of 1st, 2nd, and 3rd order multivariate polynomial equations using the independent variables, 

respectively. 

φi OD ID IDP = a aT aT aT 01 2 3 +++ (4.7a) 

2 22 φi OD ID IDP OD ID ID IDP IDP OD OD ID IDP =+ + + + + + + + + a aT aT aT aT T aT T aT T aT aT aT 01 2 3 4 5 6 7 8 9 (4.7b) 

2 22

01 2 3 4 5 6 7 8 9

2 22 2 2 2

10 11 12 13 14 15

3 33

16 17 18

φ =+ + + + + + + + +

+++ + + +

+ ++

i OD ID IDP OD ID ID IDP IDP OD OD ID IDP

OD ID OD ID ID IDP ID IDP IDP OD IDP OD

OD ID IDP

a aT aT aT aT T aT T aT T aT aT aT

aT T aT T aTT aTT aT T aT T

aT aT aT (4.7c) 

The 1st order polynomial equation requires only 4 coefficients which may offer only a rough estimate of 

the reference. The 3rd order polynomial requires 19 coefficients, which is too many coefficients. In this 

research, all the features selected are estimated using 2nd order polynomials with 10 coefficients, which 

estimate the reference with acceptable accuracy. The coefficients of selected features are listed in 

Appendix C. 

In the latter sections of this report, eight features are plotted for graphical presentation: TER – evaporator 

exit refrigerant saturation temperature, ∆Tsh – evaporator exit refrigerant superheat; TDW – compressor 

discharge wall temperature; TCR – condenser inlet refrigerant saturation temperature; ∆Tsc – liquid line 
23

 

70.5

70.6

70.7

70.8

70.9

71

71.1

71.2

71.3

71.4

0 5 10 15 20 25 30 35 40

Time (min)

Indoor Temperature (oF)

Sampling interval = 78 s

Average temperature, m = 70.90 °F

Standard deviations, σ = 0.09 °F

m+σ

m

m− σ

(a) Time change of indoor temperature 

69.5

69.7

69.9

70.1

70.3

70.5

70.7

70.9

71.1

71.3

71.5

Test Cases

Indoor Temperature (oF)

Average temperature of test samples, m = 70.51 °F

Standard Deviations of the averages of test samples, σ = 0.23 °F

m+σ

m

m− σ

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

Average temperature of each sample

(b) Repeatability of indoor temperature 

Figure 4.2. Random error of indoor temperature measurement 
24

refrigerant subcooling; TCA – condenser air temperature rise; ∆TEA – evaporator air temperature drop; and 

∆TLL – liquid line refrigerant temperature drop. The features can be expressed by residuals calculated by 

Equation 4.8. Here residual is defined as the difference between the measured value and the value 

calculated by the reference model in Equation 4.7. 

R( ) φii i = φ φ ,measurements ,reference − (4.8) 

Even though the environmental chamber’s control parameters are preset by an operator at a constant value, 

the temperature will be different and will have some random and systematic errors. In Figure 4.2(b), all 

the indoor dry-bulb temperatures were controlled to be 21.1 °C (70.0 °F); however, the obtained 

temperatures deviated from the target value. As seen in Figure 4.2(b), the 17 cases intended to have 

21.1 °C (70.0 °F) indoor temperature do not represent exactly the same conditions. When we compare 

the raw measurements, these inevitable deviations function like an external noise and should be 

considered within the uncertainty analysis. However, when the residuals of the measurements are 

compared, this deviation can be compensated by mathematical model estimation. When the mathematical 

model evaluates the current status of the system properly, the trend of the residuals will be much clearer. 

In addition to the features, the presented results include the following performance parameters: QEA,sens – 

indoor air sensible capacity; QAE,lat – indoor air latent capacity; SHREA – indoor air sensible heat ratio; 

mR – refrigerant mass flow rate; QCR – condenser refrigerant-side capacity; QER – evaporator refrigerantside capacity; Wcomp – compressor work; and EER – energy efficiency ratio. 

4.4 No-Fault Test Results

Figure 4.3 shows the pressure-enthalpy (P-h) diagram for four tests at the same indoor temperature of 

21.1 °C (70.0 °F) and relative humidity of 50 %, and four outdoor temperatures of 21.1 °C (70.0 °F), 

27.8 °C (82.0 °F), 32.2 °C (90.0 °F), and 37.8 °C (100.0 °F) (tests 2, 4, 6, and 8 of Table 3.2). The figure 

shows that the specific enthalpy change in the evaporator (h1 – h4) decreased significantly when outdoor 

temperature increased, but the specific enthalpy change in the condenser (h2 – h3) changed much less 

compared to the evaporator. 

Figure 4.4 shows the pressure-enthalpy (P-h) diagram for four tests at the same outdoor temperature of 

27.8 °C (82.0 °F) and four different indoor conditions defined by the following set of indoor temperatures 

and relative humidity: 21.1 °C (70.0 °F)/50 %, 26.7 °C (80.0 °F)/50 %, 21.1 °C (70.0 °F)/dry-coil, and 

26.7 °C (80.0 °F)/dry-coil (tests 4, 5, 12, and 13 of Table 3.2). Contrary to Figure 4.2, the specific 

enthalpy change in both the evaporator and condenser did not vary significantly between the different 

indoor operating conditions. 

Figure 4.5 provides an overview of the variation of eight temperature measurements with regard to the 

outdoor chamber temperature. ‘ID 21.1 °C (70.0 °F) DB’, ‘50% RH’, and ‘Dry-coil’ in the legend 

represent indoor air dry bulb temperature of 21.1 °C (70.0 °F), indoor relative humidity of 50 %, and an 

indoor dry-coil test with low relative humidity, respectively. Each line denotes different indoor 

conditions of dry-bulb temperature and relative humidity. 

The first figure in the left-hand column shows that the evaporator saturation temperature for the wet-coil 

condition (50 % RH) is higher than that for the dry-coil condition. This is due to the moisture removal 

enhancing the air-side heat transfer coefficient, resulting in an evaporation temperature closer to the air 
25

100

1000

50 100 150 200 250

Pressure (psi)

Specific enthalpy (Btu/lb)

90

70

82

100

Outdoor temperature ( o

F)

200

400

600

800

1

3 2

4

Indoor temperature = 70 oF 

Indoor relative humidity = 50 %

300

Figure 4.3. Pressure-enthalpy diagrams for tests at 37.8 °C (100.0 °F), 32.2 °C (90.0 °F), 27.8 °C 

(82.0 °F), and 21.1 °C (70.0°F) outdoor temperatures with 21.1 °C (70.0 °F) indoor 

temperature and 50 % relative humidity 

100

1000

50 100 150 200 250

Pressure (psi)

Specific enthalpy (Btu/lb)

80/50

70/50

70/dry

80/dry

Indoor temperature/humidity (oF/%)

200

400

600

800

1

2 3

4

Outdoor temperature = 82 oF

Outdoor relative humidity = 40 to 60 %

300

Figure 4.4. Pressure-enthalpy diagrams for tests at 27.8 °C (82.0 °F) outdoor temperature and four 

indoor temperature/relative humidity combinations: 26.7 °C (80.0 °F) DB/50 % RH, 26.7 °C 

(80.0 °F) DB/Dry-coil, 21.1 °C (70.0 °F) DB/50 % RH, 21.1 °C (70.0 °F) DB/Dry-coil 

the second plot in the right-hand column. This figure also shows that the indoor conditions have a small 

influence on the condenser temperature. 

The first figure in the right-hand side column of Figure 4.5 displays the variation of refrigerant superheat 

at the evaporator exit, ∆Tsh. As the plot shows, the degree of superheat increases at lower outdoor 
26

temperature. The figure also shows that the evaporator temperature increases as the outdoor temperature 

increases. This trend is even stronger for the condenser refrigerant saturation temperature, TCR, shown in 

temperatures. This increase is particularly pronounced for the test with 26.7 °C (80.0 °F) dry-bulb 

temperature, where the TXV does not open wide enough to provide enough refrigerant flow at the small 

pressure differential between the evaporator and condenser. This observation is related to the increased 

subcooling, ∆Tsc, shown in the third figure of the left-hand column. Since the TXV does not open wide 

enough, the subcooling increases at low ambient temperatures. 

The third figure in the right-hand column and the forth figure in the left-hand column, present the outdoor 

air temperature gain through the condenser, ∆TCA, and the indoor air temperature drop through the 

evaporator, ∆TEA, respectively. While the indoor air temperature change decreases for higher outdoor 

temperatures, the outdoor air gain remains at an approximately constant level. 

The fourth plot in the right-hand column of Figure 4.5 shows the refrigerant temperature drop through the 

liquid line. As expected, liquid line temperature drop increases for a higher temperature difference 

between indoor and outdoor. 

Figure 4.6 shows performance charts. All the points in the plots describe averaged measurements or 

residuals. The first three plots present the trends in the sensible capacity, latent capacity, and sensible 

heat ratio on the indoor air side. Sensible heat ratio is defined by the following equation: 

EA,sens EA,sens

EA

EA EA,sens EA,lat

SHR = = +

Q Q

QQ Q (4.9) 

Since there is no moisture removal during dry-coil tests, lines for ‘ID 21.1 °C (70.0 °F) DB/Dry-coil’ and 

‘ID 26.7 °C (80.0 °F) DB/Dry-coil’ overlap on the plots for QEA,lat and sensible heat ratio. 

Refrigerant mass flow rate, mR, is little affected by the ambient temperature (second plot in the right-hand 

column). This is consistent with the results presented in Figure 4.4 showing that refrigerant states at the 

compressor suction are little changed with a change of the outdoor temperature condition. Although the 

compressor mass flow rate decreases with an increasing compression ratio (due to a degraded volumetric 

efficiency), in our case this trend must have been compensated for by a decrease in the suction superheat, 

which increases refrigerant density and mass flow rate pumped by the compressor. 

On the contrary, the refrigerant mass flow rate is significantly influenced by a change of indoor 

conditions because this significantly affects the refrigerant state at the evaporator exit. When the 

evaporator temperature is reduced, vapor density at the compressor suction decreases and the mass flow 

rate also decreases. 

The two plots in the third row of Figure 4.6 show the refrigerant-side capacities for the condenser and 

evaporator, QCR and QER, respectively. The measurements show similar trends for both heat exchangers. 

And finally, the plots in the bottom row show the compressor power and system EER. As the outdoor 

temperature increases, the compressor requires more power. However, the compressor power is a rather 

weak function of the indoor operating conditions; the lines representing compressor power for the four 

indoor conditions considered in this study nearly overlap each other. The EER plot shows some 

differences due to the differences in evaporator capacities. 
27

60 70 80 90 100 110

35

40

45

50

55

Outdoor Temperature (oF)

TER (oF)

60 70 80 90 100 110

12

14

16

18

20

Outdoor Temperature (oF)

∆

Tsh (oF)

60 70 80 90 100 110

120

140

160

180

200

Outdoor Temperature (oF)

TDW (oF)

60 70 80 90 100 110

80

100

120

140

Outdoor Temperature (oF)

TCR (oF)

60 70 80 90 100 110

6

8

10

12

Outdoor Temperature (oF)

∆

T

sc (oF)

60 70 80 90 100 110

12

14

16

18

Outdoor Temperature (oF)

∆

TCA (oF)

60 70 80 90 100 110

15

20

25

30

Outdoor Temperature (oF)

∆

TEA (oF)

60 70 80 90 100 110

0

0.5

1

1.5

Outdoor Temperature (oF)

∆

TLL (oF)

ID 70 oF DB/50 % RH

ID 80 oF DB/50 % RH

ID 70 oF DB/Dry-coil

ID 80 oF DB/Dry-coil

Figure 4.5. Variation of temperature measurements with regard to outdoor chamber temperature under 

no-fault condition: From the top left to right: TER – evaporator exit saturation temperature; 

∆Tsh – evaporator exit superheat, TDW – compressor discharge wall temperature, TCR – 

condenser inlet saturation temperature, ∆Tsc – liquid line subcooling, ∆TCA - condenser air 

temperature rise, ∆TEA – evaporator air temperature drop, ∆TLL – liquid line temperature drop 
28

60 70 80 90 100 110

2

2.5

3

3.5

x 104

Outdoor Temperature (oF)

QEA,sens (Btu/h)

60 70 80 90 100 110

-5000

0

5000

10000

Outdoor Temperature (oF)

QEA,lat (Btu/h)

60 70 80 90 100 110

0.7

0.8

0.9

1

1.1

Outdoor Temperature (oF)

SHREA

60 70 80 90 100 110

350

400

450

Outdoor Temperature (oF)

mR (lbm/h)

60 70 80 90 100 110

3

3.5

4

4.5

x 104

Outdoor Temperature (oF)

QCR (Btu/h)

60 70 80 90 100 110

2

2.5

3

3.5

x 104

Outdoor Temperature (oF)

QER (Btu/h)

60 70 80 90 100 110

1000

1500

2000

2500

Outdoor Temperature (oF)

Wcmp (W)

60 70 80 90 100 110

10

15

20

25

Outdoor Temperature (oF)

EER (Btu/h·W)

ID 70 oF DB/50 % RH

ID 80 oF DB/50 % RH

ID 70 oF DB/Dry-coil

ID 80 oF DB/Dry-coil

Figure 4.6. Variation of system performance with regard to outdoor air temperature under no-fault 

conditions: From the top left to right: QEA,sens – indoor air sensible capacity, QEA,lat – indoor 

air latent capacity, SHREA – indoor air sensible heat ratio, mR – refrigerant mass flow rate, 

QCR – condenser refrigerant-side capacity, QER – evaporator refrigerant-side capacity, Wcmp – 

compressor work, EER – energy efficiency ratio
29

CHAPTER 5. SINGLE-FAULT TEST RESULTS 

5.1 Performance Variation under Single Faults 

This section presents the results of single-fault tests. We tested the effect of individual faults at four 

operating conditions corresponding to the test index of 4, 5, 8, and 9 in Table 3.2. The subsections below 

present residuals, R(....), for the following eight features: 

1. TER – evaporator exit saturation temperature 

2. ∆Tsh – evaporator exit superheat 

3. TDW – compressor discharge wall temperature 

4. TCR – condenser inlet saturation temperature 

5. ∆Tsc – liquid line subcooling 

6. TCA – condenser air temperature rise 

7. ∆TEA – evaporator air temperature drop 

8. ∆TLL – liquid line temperature drop. 

We calculated each residual as a difference between the measured value and the value provided by the 

reference model for a given feature. In addition to the residuals, the results include the following 

performance parameters: 

1. QEA,sens – indoor air sensible capacity 

2. QEA,lat – indoor air latent capacity 

3. SHR – indoor air sensible heat ratio 

4. mR – refrigerant mass flow rate 

5. QCR – condenser refrigerant-side capacity 

6. QER – evaporator refrigerant-side capacity 

7. Wcmp – compressor work 

8. EER – energy efficiency ratio. 

5.1.1 Compressor/reversing valve leakage 

The compressor/reversing valve leakage fault involved at least three fault levels. The fault level was 

calculated as the ratio of refrigerant mass flow through the system with the fault imposed divided by the 

refrigerant mass flow rate during no-fault operation. Figure 5.1 shows the residuals described in Equation 

4.8 for the eight selected features. The feature residuals in the plots were calculated based on the 

averaged measurements of fault tests and 2nd order no-fault polynomial model. Figure 5.2 shows the 

variations in averaged performance parameters. 

From Figure 5.1, the refrigerant saturation temperature for the evaporator and condenser (TER and TCR, 

respectively) show consistent responses for all four operating conditions. Also, the change in air 

temperature difference across the evaporator and condenser is similar for the operating conditions studied. 

This system characteristic corresponds to the similar slopes of the capacity lines for the evaporator and 

condenser presented in Figure 5.2. From the same figure, it is worth noticing that the refrigerant mass 

flow rate (mR) and compressor power (Wcmp) are strongly affected by the outdoor temperature, while the 

indoor condition has a small influence on them. The compressor power slightly decreases with the 

increasing level of fault because of the corresponding reduction of the temperature (pressure) lift 

produced by the increased evaporator temperature and decreased condenser temperature. The EER is 
30

0 2 4 6 8 10 12

-1

0

1

2

Fault level (%)

R[

TER] (oF)

0 2 4 6 8 10 12

-1.5

-1

-0.5

0

0.5

Fault level (%)

R[

∆

Tsh] (oF)

0 2 4 6 8 10 12

-2

-1

0

1

2

Fault level (%)

R[

TDW] (oF)

0 2 4 6 8 10 12

-3

-2

-1

0

1

Fault level (%)

R[

TCR] (oF)

0 2 4 6 8 10 12

-1.5

-1

-0.5

0

0.5

Fault level (%)

R[

∆

Tsc] (oF)

0 2 4 6 8 10 12

-1.5

-1

-0.5

0

0.5

Fault level (%)

R[

∆

TCA] (oF)

0 2 4 6 8 10 12

-1.5

-1

-0.5

0

0.5

Fault level (%)

R[

∆

TEA] (oF)

0 2 4 6 8 10 12

-0.2

0

0.2

0.4

0.6

Fault level (%)

R[

∆

TLL] (oF)

OD 82 oF DB - ID 70 oF DB/50 % RH

OD 82 oF DB - ID 80 oF DB/50 % RH

OD 100 oF DB - ID 70 oF DB/50 % RH

OD 100 oF DB - ID 80 oF DB/50 % RH

Figure 5.1. Residuals for selected feature with compressor fault. From the top left to right: TER – 

evaporator exit saturation temperature; ∆Tsh – evaporator exit superheat, TDW – compressor 

discharge wall temperature, TCR – condenser inlet saturation temperature, ∆Tsc – liquid line 

subcooling, TCA – condenser air temperature rise, ∆TEA – evaporator air temperature drop, 

∆TLL – liquid line temperature drop 
31

0 2 4 6 8 10 12

1.8

2

2.2

2.4

x 104

Fault level (%)

QEA,sens (Btu/h)

0 2 4 6 8 10 12

2000

4000

6000

8000

10000

Fault level (%)

QEA,lat (Btu/h)

0 2 4 6 8 10 12

0.7

0.8

0.9

1

Fault level (%)

SHR

0 2 4 6 8 10 12

300

350

400

450

Fault level (%)

mR (lbm/h)

0 2 4 6 8 10 12

3

3.5

4

4.5

x 104

Fault level (%)

QCR (Btu/h)

0 2 4 6 8 10 12

2

2.5

3

3.5

x 104

Fault level (%)

QER (Btu/h)

0 2 4 6 8 10 12

1600

1800

2000

2200

2400

Fault level (%)

Wcmp (W)

0 2 4 6 8 10 12

5

10

15

20

Fault level (%)

EER (Btu/h·W)

OD 82 oF DB - ID 70 oF DB/50 % RH

OD 82 oF DB - ID 80 oF DB/50 % RH

OD 100 oF DB - ID 70 oF DB/50 % RH

OD 100 oF DB - ID 80 oF DB/50 % RH

Figure 5.2. Variation of selected performance parameters with a compressor fault. From the top left to 

right: QEA,sens – indoor air sensible capacity, QAE,lat – indoor air latent capacity, SHR – 

indoor air sensible heat ratio, mR – refrigerant mass flow rate, QCR – condenser refrigerantside capacity; QER – evaporator refrigerant-side capacity; Wcomp – compressor work; EER – 

energy efficiency ratio 
32

degraded, however, because the reduction in the cooling capacity is greater than the reduction in the 

compressor power. 

5.1.2 Improper outdoor coil air flow rate (condenser fouling) 

We implemented fault levels of 5 %, 10 %, 20 %, 35 % and 50 % by blocking the corresponding 

percentage of the finned frontal area of the condenser. The fault level of 50 % was tested only for the 

operating conditions of 26.7 °C (80.0 °F) and 27.8 °C (82.0 °F) indoor and outdoor air temperatures, 

respectively, because of a concern of raising the condensing pressure too high and overloading the 

compressor. 

Figure 5.3 shows residuals for the selected features, and Figure 5.4 shows variations of the performance 

parameters. Since condenser fouling is a fault occurring at a component level, its effect manifests itself 

most profoundly in condenser data. The change of evaporator temperature (TER) is minor, but the 

condenser temperature (TCR) increases significantly for a higher condenser fouling level. The lines 

indicating the residuals overlap tightly showing so sensitivity the indoor and outdoor operating conditions 

(second plot in the right-hand side column). The compressor discharge temperature (TDW) also increases 

with the increased level of fault. 

All residuals “behave” in an expected, systematic fashion except those associated with the test at 26.7 °C 

(80.0 °F)/27.8 °C (82.0 °F) indoor/outdoor temperature at 35 % and 50 % fault levels. We speculate that 

during these two conditions, with greatly reduced condenser air flow, the refrigerant entering the TXV 

carried a substantial amount of bubbles, reducing the mass flow rate of refrigerant. Because of the 

amount of bubbles, the TXV could not allow sufficient refrigerant mass flow even if it were fully open. 

This condition is known as actuator saturation. The resulting reduction in refrigerant mass flow rate is 

shown in Figure 5.4 (second plot in the right-hand column) and is reflected also in the higher evaporator 

superheat shown in Figure 5.3. 

The plot with the liquid line temperature change (∆TLL) provides an indication of the lack of refrigerant 

subcooling, or small subcooling, at the condenser outlet. Since the heat transfer between the liquid line 

and ambient is typically small, the temperature change in the liquid line is negligible unless two-phase 

refrigerant is entering the line or refrigerant flashes in the line due to its pressure drop. If the refrigerant 

is two-phase, the temperature decreases along the liquid line in proportion to the pressure drop. Most of 

the conditions with a fault level greater than 35 % show distinct temperature change in the liquid line. 

Since the mass flow meter in the current investigation underestimates the value when the refrigerant is 

two-phase, all the performance parameters calculated from the refrigerant mass flow rate, i.e. 

condenser/evaporator refrigerant capacity, EER based on refrigerant capacity, etc., show excessive 

degradation at the specified conditions above. Compressor work increases with increasing fault level. In 

spite of the reduced refrigerant flow rate, increased condensing pressure requires additional compressor 

work. 
33

0 10 20 30 40

-3

-2

-1

0

1

Fault level (%)

R[

TER] (oF)

0 10 20 30 40

-5

0

5

10

Fault level (%)

R[

∆

Tsh] (oF)

0 10 20 30 40

-10

0

10

20

Fault level (%)

R[

TDW] (oF)

0 10 20 30 40

-2

0

2

4

6

Fault level (%)

R[

TCR] (oF)

0 10 20 30 40

-10

-5

0

5

Fault level (%)

R[

∆

Tsc] (oF)

0 10 20 30 40

-1

-0.5

0

0.5

Fault level (%)

R[

∆

TCA] (oF)

0 10 20 30 40

-1.5

-1

-0.5

0

0.5

Fault level (%)

R[

∆

TEA] (oF)

0 10 20 30 40

-1

0

1

2

Fault level (%)

R[

∆

TLL] (oF)

OD 82 oF DB - ID 70 oF DB/50 % RH

OD 82 oF DB - ID 80 oF DB/50 % RH

OD 100 oF DB - ID 70 oF DB/50 % RH

OD 100 oF DB - ID 80 oF DB/50 % RH

Figure 5.3. Residuals for selected features with the improper indoor air flow rate fault. From the top 

left to right: TER – evaporator exit saturation temperature, ∆Tsh – evaporator exit superheat, 

TDW – compressor discharge wall temperature, TCR – condenser inlet saturation temperature, 

∆Tsc – liquid line subcooling, TCA – condenser air temperature rise, ∆TEA – evaporator air 

temperature drop, ∆TLL – liquid line temperature drop 
34

0 10 20 30 40

1.8

2

2.2

2.4

x 104

Fault level (%)

QEA,sens (Btu/h)

0 10 20 30 40

2000

4000

6000

8000

10000

Fault level (%)

QEA,lat (Btu/h)

0 10 20 30 40

0.7

0.8

0.9

1

Fault level (%)

SHR

0 10 20 30 40

360

380

400

420

440

Fault level (%)

mR (lbm/h)

0 10 20 30 40

3

3.5

4

4.5

x 104

Fault level (%)

QCR (Btu/h)

0 10 20 30 40

2

2.5

3

3.5

x 104

Fault level (%)

QER (Btu/h)

0 10 20 30 40

1500

2000

2500

Fault level (%)

Wcmp (W)

0 10 20 30 40

5

10

15

20

Fault level (%)

EER (Btu/h·W)

OD 82 oF DB - ID 70 oF DB/50 % RH

OD 82 oF DB - ID 80 oF DB/50 % RH

OD 100 oF DB - ID 70 oF DB/50 % RH

OD 100 oF DB - ID 80 oF DB/50 % RH

Figure 5.4. Variation of selected performance parameters with the improper indoor air flow rate fault. 

From the top left to right: QEA,sens – indoor air sensible capacity, QAE,lat – indoor air latent 

capacity, SHR – indoor air sensible heat ratio, mR – refrigerant mass flow rate, QCR – 

condenser refrigerant-side capacity, QER – evaporator refrigerant-side capacity, Wcomp – 

compressor work, EER – energy efficiency ratio 
35

5.1.3 Improper indoor air flow rate (evaporator fouling) 

We implemented the improper indoor air flow rate fault by controlling the speed of the air fan located at 

the end of the ductwork. Reducing the indoor air flow approximates evaporator fouling. The tests 

included three fault levels at approximately 10 %, 20 %, and 30 %, which corresponded to the respective 

reductions of the air flow rate from the no-fault condition. Figure 5.5 shows residuals for the selected 

features, and Figure 5.6 shows variations of the performance parameters. 

A change in the evaporator saturation temperature (TER) is the strongest indication of the reduced air flow. 

This change is very similar for all four operating conditions used. A change in the air temperature drop 

across the evaporator (∆TEA) is the second consistent system response for all operating conditions. The 

condenser saturation temperature also drops uniformly with the increased fault level; however, the 

temperature drop is only 0.6 °C (1.0 °F) for 30 % reduction in the indoor air flow. Also, the compressor 

discharge temperature (∆TDW) and liquid line temperature drop (∆TLL) show small changes in their 

residuals. 

From Figure 5.6, both the sensible and latent capacity change linearly with reduced air flow. This is 

opposite of SHR trends seen for the compressor fault and condenser fouling fault, where the sensible heat 

ratio increased. The lowered evaporator temperature decreased the refrigerant density in the suction line 

causing a decrease in the refrigerant mass flow rate (mR). However, the compressor work stays relatively 

constant throughout the fault tests because of the increased compression ratio. As expected, EER 

decreases. 

5.1.4 Liquid line restriction 

We implemented the restriction fault by modulating the settings of two valves installed in parallel in the 

liquid line. The level of the liquid line restriction fault was numerically assigned by the ratio of the 

increase in the liquid line pressure drop and the pressure differential between the upstream and 

downstream of the TXV at the no-fault condition. Figure 5.7 shows residuals for the selected features, 

and Figure 5.8 shows variations of the performance parameters. 

In a system equipped with a variable opening expansion device – such as a TXV – the expansion device 

tends to compensate for over-restriction in the liquid line. Consequently, the over-restriction will not 

change the system performance as long as the expansion device can open enough to maintain refrigerant 

mass flow rate at the smaller available pressure differential that exists between the expansion device inlet 

and the inlet to the evaporator. In our case, the TVX was able to compensate for the restriction fault up to 

approximately a 10 % increase in liquid line pressure drop. Only after the restriction exceeded the 10 % 

fault level did the residuals for the selected features start to show a departure from their no-fault values. 

The fault was most pronounced for the evaporator superheat (∆Tsh), evaporator saturation temperature, 

(TER), and the compressor discharge temperature (TDW). All of the performance parameters plotted in 

Figure 5.8 were basically unaffected up to the 10 % fault level. Beyond this point, all performance 

parameters except the compressor work (Wcmp) and latent capacity (QEA,lat) deteriorated. 
36

0 10 20 30 40

-4

-2

0

2

Fault level (%)

R[

TER] (oF)

0 10 20 30 40

-1.5

-1

-0.5

0

0.5

Fault level (%)

R[

∆

Tsh] (oF)

0 10 20 30 40

-1

0

1

2

3

Fault level (%)

R[

TDW] (oF)

0 10 20 30 40

-1

-0.5

0

0.5

Fault level (%)

R[

TCR] (oF)

0 10 20 30 40

-1

-0.5

0

0.5

1

Fault level (%)

R[

∆

T

sc] (oF)

0 10 20 30 40

-1

-0.5

0

0.5

Fault level (%)

R[

∆

TCA] (oF)

0 10 20 30 40

-2

0

2

4

Fault level (%)

R[

∆

TEA] (oF)

0 10 20 30 40

-0.5

0

0.5

Fault level (%)

R[

∆

TLL] (oF)

OD 82 oF DB - ID 70 oF DB/50 % RH

OD 82 oF DB - ID 80 oF DB/50 % RH

OD 100 oF DB - ID 70 oF DB/50 % RH

OD 100 oF DB - ID 80 oF DB/50 % RH

Figure 5.5. Residuals for selected features with the improper indoor air flow rate fault. From the top 

left to right: TER – evaporator exit saturation temperature, ∆Tsh – evaporator exit superheat, 

TDW – compressor discharge wall temperature, TCR – condenser inlet saturation temperature, 

∆Tsc – liquid line subcooling, TCA – condenser air temperature rise, ∆TEA – evaporator air 

temperature drop, ∆TLL – liquid line temperature drop 
37

0 10 20 30 40

1.6

1.8

2

2.2

2.4

x 104

Fault level (%)

QEA,sens (Btu/h)

0 10 20 30 40

2000

4000

6000

8000

10000

Fault level (%)

QEA,lat (Btu/h)

0 10 20 30 40

0.7

0.8

0.9

1

Fault level (%)

SHR

0 10 20 30 40

350

400

450

Fault level (%)

mR (lbm/h)

0 10 20 30 40

3

3.5

4

4.5

x 104

Fault level (%)

QCR (Btu/h)

0 10 20 30 40

2

2.5

3

3.5

x 104

Fault level (%)

QER (Btu/h)

0 10 20 30 40

1600

1800

2000

2200

2400

Fault level (%)

Wcmp (W)

0 10 20 30 40

5

10

15

20

Fault level (%)

EER (Btu/h·W)

OD 82 oF DB - ID 70 oF DB/50 % RH

OD 82 oF DB - ID 80 oF DB/50 % RH

OD 100 oF DB - ID 70 oF DB/50 % RH

OD 100 oF DB - ID 80 oF DB/50 % RH

Figure 5.6. Selected performance parameters with the improper indoor air flow rate fault. From the top 

left to right: QEA,sens – indoor air sensible capacity, QAE,lat – indoor air latent capacity, SHR – 

indoor air sensible heat ratio, mR – refrigerant mass flow rate, QCR – condenser refrigerantside capacity, QER – evaporator refrigerant-side capacity, Wcomp – compressor work, EER – 

energy efficiency ratio 
38

0 5 10 15 20 25

-6

-4

-2

0

2

Fault level (%)

R[

TER] (oF)

0 5 10 15 20 25

-5

0

5

10

Fault level (%)

R[

∆

Tsh] (oF)

0 5 10 15 20 25

-5

0

5

10

Fault level (%)

R[

TDW] (oF)

0 5 10 15 20 25

-1

-0.5

0

0.5

Fault level (%)

R[

TCR] (oF)

0 5 10 15 20 25

-1

0

1

2

3

Fault level (%)

R[

∆

Tsc] (oF)

0 5 10 15 20 25

-1.5

-1

-0.5

0

0.5

Fault level (%)

R[

∆

TCA] (oF)

0 5 10 15 20 25

-1

-0.5

0

0.5

Fault level (%)

R[

∆

TEA] (oF)

0 5 10 15 20 25

-1

0

1

2

Fault level (%)

R[

∆

TLL] (oF)

OD 82 oF DB - ID 70 oF DB/50 % RH

OD 82 oF DB - ID 80 oF DB/50 % RH

OD 100 oF DB - ID 70 oF DB/50 % RH

OD 100 oF DB - ID 80 oF DB/50 % RH

Figure 5.7. Residuals of selected features with the liquid line restriction fault. From the top left to right: 

TER – evaporator exit saturation temperature, ∆Tsh – evaporator exit superheat, TDW – 

compressor discharge wall temperature, TCR – condenser inlet saturation temperature, ∆Tsc – 

liquid line subcooling, TCA – condenser air temperature rise, ∆TEA – evaporator air 

temperature drop, ∆TLL – liquid line temperature drop 
39

0 5 10 15 20 25

1.8

2

2.2

2.4

x 104

Fault level (%)

QEA,sens (Btu/h)

0 5 10 15 20 25

2000

4000

6000

8000

10000

Fault level (%)

QEA,lat (Btu/h)

0 5 10 15 20 25

0.7

0.8

0.9

1

Fault level (%)

SHR

0 5 10 15 20 25

360

380

400

420

440

Fault level (%)

mR (lbm/h)

0 5 10 15 20 25

3

3.5

4

4.5

x 104

Fault level (%)

QCR (Btu/h)

0 5 10 15 20 25

2

2.5

3

3.5

x 104

Fault level (%)

QER (Btu/h)

0 5 10 15 20 25

1600

1800

2000

2200

2400

Fault level (%)

Wcmp (W)

0 5 10 15 20 25

10

12

14

16

18

Fault level (%)

EER (Btu/h·W)

OD 82 oF DB - ID 70 oF DB/50 % RH

OD 82 oF DB - ID 80 oF DB/50 % RH

OD 100 oF DB - ID 70 oF DB/50 % RH

OD 100 oF DB - ID 80 oF DB/50 % RH

Figure 5.8. Selected performance parameters with the liquid line restriction fault. From the top left to 

right: QEA,sens – indoor air sensible capacity, QAE,lat – indoor air latent capacity, SHR – 

indoor air sensible heat ratio, mR – refrigerant mass flow rate, QCR – condenser refrigerantside capacity, QER – evaporator refrigerant-side capacity, Wcomp – compressor work, EER – 

energy efficiency ratio 
40

 5.1.5 Refrigerant undercharge and overcharge 

The fault level for refrigerant undercharge (or refrigerant overcharge) was calculated as the ratio of the 

charge reduction (or charge excess) and the optimal refrigerant charge in the system. The test program 

included three fault levels: 10 %, 20 %, and 30 %. Figures 5.9 and 5.10 show residuals for the selected 

features for the undercharge and overcharge faults, respectively. 

With an undercharge, the liquid line subcooling (∆Tsc) is the most indicative of the fault starting at the 

10 % fault level regardless of the operating conditions. The plot for liquid line temperature drop (∆TLL) 

provides a complementary indication, although its strength is influenced by the operating regime. As in 

previous cases, the liquid line temperature drop – if it is significant – is caused by a drop of the saturation 

temperature of the two-phase refrigerant flowing in the line. A reduced refrigerant charge causes the 

condenser temperature (TCR) to decrease beginning at the 10 % fault; however, the rate of decrease varies 

somewhat with operating conditions. The compressor wall discharge temperature (TDW), evaporator 

saturation temperature (TER), and evaporator superheat (∆Tsh) provide non-linear signals with a strong 

dependence on operating conditions. 

For the overcharging fault (Figure 5.10), the liquid line subcooling (∆Tsc) and the condenser saturation 

temperature (∆Tsc) increase steadily with the increasing refrigerant overcharge, and the plot for the four 

operating conditions almost overlap. The liquid line temperature drop (∆TLL) data indicate a decrease in 

the relative temperature drop and may provide a useful signal on the overcharge fault. The compressor 

wall discharge temperature (TDW) decreases, but the strength of this trend varies somewhat between the 

tested cases. Other features do not provide a strong or consistent indication of refrigerant overcharging. 

Figure 5.11 shows the variation of performance parameters for the undercharge and overcharge faults. 

Among the most important parameters, the evaporator capacity and compressor work increase with 

refrigerant charge level but at a different rate. Consequently, the EER plot has a maximum, which is 

reached at the optimal refrigerant charge in the system. 
41

0 5 10 15 20 25 30

-15

-10

-5

0

5

Fault level (%)

R[

TER] (oF)

0 5 10 15 20 25 30

-10

0

10

20

Fault level (%)

R[

∆

Tsh] (oF)

0 5 10 15 20 25 30

-5

0

5

10

15

Fault level (%)

R[

TDW] (oF)

0 5 10 15 20 25 30

-6

-4

-2

0

2

Fault level (%)

R[

TCR] (oF)

0 5 10 15 20 25 30

-10

-5

0

5

Fault level (%)

R[

∆

Tsc] (oF)

0 5 10 15 20 25 30

-4

-2

0

2

Fault level (%)

R[

∆

TCA] (oF)

0 5 10 15 20 25 30

-3

-2

-1

0

1

Fault level (%)

R[

∆

TEA] (oF)

0 5 10 15 20 25 30

-1

0

1

2

Fault level (%)

R[

∆

TLL] (oF)

OD 82 oF DB - ID 70 oF DB/50 % RH

OD 82 oF DB - ID 80 oF DB/50 % RH

OD 100 oF DB - ID 70 oF DB/50 % RH

OD 100 oF DB - ID 80 oF DB/50 % RH

Figure 5.9. Residuals for selected features with refrigerant undercharge fault. From the top left to right: 

TER – evaporator exit saturation temperature, ∆Tsh – evaporator exit superheat, TDW – 

compressor discharge wall temperature, TCR – condenser inlet saturation temperature, ∆Tsc – 

liquid line subcooling, TCA – condenser air temperature rise, ∆TEA – evaporator air 

temperature drop, ∆TLL – liquid line temperature drop 
42

0 5 10 15 20 25 30

-1

-0.5

0

0.5

1

Fault level (%)

R[

TER] (oF)

0 5 10 15 20 25 30

-2

-1

0

1

Fault level (%)

R[

∆

Tsh] (oF)

0 5 10 15 20 25 30

-5

0

5

10

Fault level (%)

R[

TDW] (oF)

0 5 10 15 20 25 30

-2

0

2

4

6

Fault level (%)

R[

TCR] (oF)

0 5 10 15 20 25 30

-5

0

5

10

Fault level (%)

R[

∆

Tsc] (oF)

0 5 10 15 20 25 30

-0.4

-0.2

0

0.2

0.4

Fault level (%)

R[

∆

TCA] (oF)

0 5 10 15 20 25 30

-1

-0.5

0

0.5

1

Fault level (%)

R[

∆

TEA] (oF)

0 5 10 15 20 25 30

-0.5

0

0.5

Fault level (%)

R[

∆

TLL] (oF)

OD 82 oF DB - ID 70 oF DB/50 % RH

OD 82 oF DB - ID 80 oF DB/50 % RH

OD 100 oF DB - ID 70 oF DB/50 % RH

OD 100 oF DB - ID 80 oF DB/50 % RH

Figure 5.10. Residuals for selected features with refrigerant overcharge fault. From the top left to right: 

TER – evaporator exit saturation temperature, ∆Tsh – evaporator exit superheat, TDW – 

compressor discharge wall temperature, TCR – condenser inlet saturation temperature, ∆Tsc – 

liquid line subcooling, TCA – condenser air temperature rise, ∆TEA – evaporator air 

temperature drop, ∆TLL – liquid line temperature drop 
43

-40 -20 0 20 40

1.8

2

2.2

2.4

x 104

Fault level (%)

QEA,sens (Btu/h)

-40 -20 0 20 40

2000

4000

6000

8000

10000

Fault level (%)

QEA,lat (Btu/h)

-40 -20 0 20 40

0.7

0.8

0.9

1

Fault level (%)

SHR

-40 -20 0 20 40

100

200

300

400

500

Fault level (%)

mR (lbm/h)

-40 -20 0 20 40

1

2

3

4

5

x 104

Fault level (%)

QCR (Btu/h)

-40 -20 0 20 40

0

1

2

3

4

x 104

Fault level (%)

QER (Btu/h)

-40 -20 0 20 40

1500

2000

2500

Fault level (%)

Wcmp (W)

-40 -20 0 20 40

5

10

15

20

Fault level (%)

EER (Btu/h·W)

OD 82 oF DB - ID 70 oF DB/50 % RH

OD 82 oF DB - ID 80 oF DB/50 % RH

OD 100 oF DB - ID 70 oF DB/50 % RH

OD 100 oF DB - ID 80 oF DB/50 % RH

Figure 5.11. Selected performance parameters with respect to the refrigerant charge level. From the top 

left to right: QEA,sens – indoor air sensible capacity, QAE,lat – indoor air latent capacity, SHR – 

indoor air sensible heat ratio, mR – refrigerant mass flow rate, QCR – condenser refrigerantside capacity, QER – evaporator refrigerant-side capacity, Wcomp – compressor work, EER – 

energy efficiency ratio 
44

5.1.6 Non-condensable gas 

We implemented this fault by charging a controlled amount of dry nitrogen into the system. The mass of 

charged nitrogen divided by the mass of nitrogen that could occupy the system at atmospheric pressure 

indicated the fault level. We estimated that a typical level of this fault found in the field installation 

should not exceed 5 %, and for this level we performed tests for all four operating conditions applied to 

other faults. To include more severe scenarios, we carried out tests for 10 %, 15 %, and 20 % fault levels 

at two extreme operating conditions of outdoor 27.8 °C (82.0 °F) DB – indoor 26.7 °C (80.0 °F) DB/50 % 

RH and outdoor 37.8 °C (100.0 °F) DB – indoor 21.1 °C (70.0 °F) DB/50 % RH. Figure 5.12 shows 

residuals for the selected features, and Figure 5.13 shows variations of the performance parameters. 

Among the features presented in Figure 5.12, the residuals for the liquid line subcooling (∆Tsc) provide 

the strongest and most consistent indication of the increasing level of fault. Equally consistent is the plot 

for the condenser saturation temperature (TCR) with a somewhat weaker sensitivity than that of ∆Tsc. The 

plot with the compressor discharge wall temperature (TDW) also has a positive trend with the increasing 

level of fault; however, the collected data have a scatter that typically burdens compressor discharge 

temperature readings. All of the above features are related to the condenser, which can be explained by 

the fact that non-condensable gases are likely to accumulate in the condenser. Non-condensables collect 

on the high pressure side of the system and raise the condensing pressure above that corresponding to the 

temperature at which the refrigerant is actually condensing. This increases power consumption and 

reduces capacity. The excess pressure is caused by the partial pressure of the non-condensables. 

(ASHRAE Handbook – HVAC Systems and Equipment 35.6) 

Performance parameter (Figure 5.13) changes are small. But due to the condenser pressure increase, the 

compressor work steadily increases and EER decreases with an increasing level of non-condensable. 
45

0 5 10 15 20

-0.5

0

0.5

1

1.5

Fault level (%)

R[

TER] (oF)

0 5 10 15 20

-2

0

2

4

Fault level (%)

R[

∆

Tsh] (oF)

0 5 10 15 20

-5

0

5

10

Fault level (%)

R[

TDW] (oF)

0 5 10 15 20

-2

0

2

4

6

Fault level (%)

R[

TCR] (oF)

0 5 10 15 20

-5

0

5

10

Fault level (%)

R[

∆

Tsc] (oF)

0 5 10 15 20

-0.4

-0.2

0

0.2

0.4

Fault level (%)

R[

∆

TCA] (oF)

0 5 10 15 20

-0.5

0

0.5

1

Fault level (%)

R[

∆

TEA] (oF)

0 5 10 15 20

-0.5

0

0.5

1

1.5

Fault level (%)

R[

∆

TLL] (oF)

OD 82 oF DB - ID 70 oF DB/50 % RH

OD 82 oF DB - ID 80 oF DB/50 % RH

OD 100 oF DB - ID 70 oF DB/50 % RH

OD 100 oF DB - ID 80 oF DB/50 % RH

Figure 5.12. Residuals for selected features with non-condensable gas fault. From the top left to right: 

TER – evaporator exit saturation temperature, ∆Tsh – evaporator exit superheat, TDW – 

compressor discharge wall temperature, TCR – condenser inlet saturation temperature, ∆Tsc – 

liquid line subcooling, TCA – condenser air temperature rise, ∆TEA – evaporator air 

temperature drop, ∆TLL – liquid line temperature drop 
46

0 5 10 15 20

1.8

2

2.2

2.4

x 104

Fault level (%)

QEA,sens (Btu/h)

0 5 10 15 20

2000

4000

6000

8000

10000

Fault level (%)

QEA,lat (Btu/h)

0 5 10 15 20

0.7

0.8

0.9

1

Fault level (%)

SHR

0 5 10 15 20

360

380

400

420

440

Fault level (%)

mR (lbm/h)

0 5 10 15 20

3

3.5

4

4.5

x 104

Fault level (%)

QCR (Btu/h)

0 5 10 15 20

2

2.5

3

3.5

x 104

Fault level (%)

QER (Btu/h)

0 5 10 15 20

1600

1800

2000

2200

2400

Fault level (%)

Wcmp (W)

0 5 10 15 20

10

12

14

16

18

Fault level (%)

EER (Btu/h·W)

OD 82 oF DB - ID 70 oF DB/50 % RH

OD 82 oF DB - ID 80 oF DB/50 % RH

OD 100 oF DB - ID 70 oF DB/50 % RH

OD 100 oF DB - ID 80 oF DB/50 % RH

Figure 5.13. Selected performance parameters with non-condensable gas fault. From the top left to right: 

QEA,sens – indoor air sensible capacity, QAE,lat – indoor air latent capacity, SHR – indoor air 

sensible heat ratio, mR – refrigerant mass flow rate, QCR – condenser refrigerant-side 

capacity, QER – evaporator refrigerant-side capacity, Wcomp – compressor work, EER – 

energy efficiency ratio 
47

5.2 Comparative Evaluation of Single-Fault Effects 

5.2.1 Feature residuals 

This section contains a comparative presentation of the effects of single faults on the eight selected 

features at 27.8 °C (82.0 °F) outdoor dry bulb temperature, 26.7 °C (80.0 °F) indoor dry bulb temperature, 

and 50 % indoor relative humidity (Test #5). 

The evaporator saturation temperature (TER, Figure 5.14) is affected most by refrigerant undercharge and 

liquid line restriction yielding a negative residual. Other faults have a small impact except 

compressor/reversing valve leakage, which results in a 1.1 °C (2.0 °F) positive TER residual for 10 % level 

fault. 

The suction line superheat (∆Tsh, Figure 5.14) is affected most by refrigerant undercharge, liquid line 

restriction, non-condensable gases, and improper outdoor air flow rate. The R(∆Tsh) chart shows that the 

TXV was able to properly control refrigerant superheat for when other faults were applied. 

The compressor discharge wall temperature (TDW, Figure 5.14) feature has significant positive residuals 

for refrigerant undercharge, non-condensable gases, liquid line restriction, and improper outdoor air flow 

rate, and it has a moderate positive residual for refrigerant overcharge. Other faults have a minimal effect. 

The condenser inlet saturation temperature (TCR, Figure 5.14) is minimally affected by refrigerant 

overcharge, and liquid line restriction. Positive residuals for this residual were obtained for noncondensable gases, refrigerant overcharge, and low outdoor air flow rate; while negative residuals were 

calculated for compressor/reversing valve leakage and refrigerant undercharge. 

The residuals of liquid line subcooling (∆Tsc, Figure 5.15) are large enough for FDD methods for noncondensable gases and refrigerant overcharge (positive), and refrigerant undercharge and low outdoor air 

flow rate (negative). 

The condenser air temperature gain (∆TCA, Figure 5.15) is negatively affected by each fault; however, the 

residuals are small in general, and only refrigerant undercharge and possibly compressor/reversing valve 

leakage could be detected using this feature. 

The evaporator air temperature drop (∆TEA, Figure 5.15) residuals are suitable for FDD methods for low 

indoor air flow rate (positive) and refrigerant undercharge (negative). Other residuals are within 0.6 °C 

(1.0 °F) for the faults studied. 

The liquid line temperature drop (∆TLL, Figure 5.15) has residuals within 1.1 °C (2.0 °F) for all studied 

faults offering limited opportunity for fault detection. The most influential faults for this feature are 

refrigerant undercharge, non-condensable gases, and improper outdoor air flow rate. 

Figures 5.16 and 5.17 compare the impact of different single faults on performance parameters shown as 

residuals. The reference values of performance parameters were calculated by the 2nd order multivariate 

polynomial described in section 4.3. The sensible capacity (QEA,sens, Figure 5.16) decreased for all faults 

except refrigerant overcharge for which capacity was rather steady, and the latent capacity (QEA,lat, Figure 

5.16) decreased for all faults except low indoor air flow for which latent capacity increased. 
48

0 10 20 30 40

-12

-10

-8

-6

-4

-2

0

2

Fault Level [%]

R[

TER] (oF)

0 10 20 30 40

-5

0

5

10

15

20

Fault Level [%]

R[

∆

Tsh] (oF)

0 10 20 30 40

-5

0

5

10

15

20

Fault Level [%]

R[

TDW] (oF)

0 10 20 30 40

-5

0

5

Fault Level [%]

R[

TCR] (oF)

Compressor leakage

Improper OD air flow rate

Improper ID air flow rate

Liquid line restriction

Refrigerant undercharge

Refrigerant overcharge

Non-condensable gases

Figure 5.14. Residuals for selected features for different faults. From the top left to right: TER – 

evaporator exit saturation temperature, ∆Tsh – evaporator exit superheat, TDW – compressor 

discharge wall temperature, TCR – condenser inlet saturation temperature 

 (Test #5: 27.8 °C (82.0 °F) outdoor dry bulb temperature, 26.7 °C (80.0 °F) indoor dry bulb 

temperature and 50 % indoor relative humidity) 
49

0 10 20 30 40

-10

-5

0

5

10

Fault Level [%]

R[

∆

Tsc] (oF)

0 10 20 30 40

-4

-3

-2

-1

0

1

Fault Level [%]

R[

∆

TCA] (oF)

0 10 20 30 40

-3

-2

-1

0

1

2

3

4

Fault Level [%]

R[

∆

TEA] (oF)

0 10 20 30 40

-0.5

0

0.5

1

1.5

2

Fault Level [%]

R[

∆

TLL] (oF)

Compressor leakage

Improper OD air flow rate

Improper ID air flow rate

Liquid line restriction

Refrigerant undercharge

Refrigerant overcharge

Non-condensable gases

Figure 5.15. Residuals for selected features for different faults. From the top left to right: ∆Tsc – liquid 

line subcooling, ∆TCA – condenser air temperature rise, ∆TEA – evaporator air temperature 

drop, ∆TLL – liquid line temperature drop 

 (Test #5: 27.8 °C (82.0 °F) outdoor dry bulb temperature, 26.7 °C (80.0 °F) indoor dry bulb 

temperature and 50 % indoor relative humidity) 
50

0 10 20 30 40

-5000

-4000

-3000

-2000

-1000

0

1000

Fault Level [%]

R[

QEA,sens] (Btu/h)

0 10 20 30 40

-3000

-2000

-1000

0

1000

2000

Fault Level [%]

R[

QEA,lat] (Btu/h)

0 10 20 30 40

-0.08

-0.06

-0.04

-0.02

0

0.02

0.04

Fault Level [%]

R[SHR]

0 10 20 30 40

-120

-100

-80

-60

-40

-20

0

20

Fault Level [%]

R[

mR] (lbm/h)

Compressor leakage

Improper OD air flow rate

Improper ID air flow rate

Liquid line restriction

Refrigerant undercharge

Refrigerant overcharge

Non-condensable gases

Figure 5.16. Residuals for selected performance parameters for different faults. From the top left to 

right: QEA,sens – indoor air sensible capacity, QAE,lat – indoor air latent capacity; SHR – 

indoor air sensible heat ratio, mR – refrigerant mass flow rate 

 (Test #5: 27.8 °C (82.0 °F) outdoor dry bulb temperature, 26.7 °C (80.0 °F) indoor dry bulb 

temperature and 50 % indoor relative humidity) 
51

The refrigerant mass flow rate (mR, Figure 5.16) was unchanged for refrigerant overcharge, but decreased 

markedly for all other faults. 

As expected, condenser capacity (QCR, Figure 5.17) and evaporator capacity (QER, Figure 5.17) decreased 

for each fault except refrigerant overcharge. The compressor work (Wcmp, Figure 5.17) increased for noncondensable gases, refrigerant overcharge, and low outdoor air flow rate; and it did not change or 

decreased for the remaining faults. The consequence of these changes in QER and Wcmp is a degraded EER 

for each fault (Figure 5.17). 

Even though the performance degradation due to refrigerant overcharge is not large, refrigerant 

overcharge may cause a serious problem, especially for a heat pump system. During winter, the 

refrigerant usually floods the evaporator. In the overcharge system, this flooding will be more severe and 

may results in liquid refrigerant entering the compressor and damaging it. 

We may note that the sensitivity of residuals to a fault level depends on the system design. For example, 

heat exchanger faults will generally have a smaller effect on different residuals if heat exchangers are 

oversized. Or, the refrigerant overcharge fault is less apparent in systems equipped with a suitable liquid 

line receiver. Even the non-condensable gases fault can be mitigated by a large receiver since noncondensables tend to accumulate in it. 
52

0 10 20 30 40

-12000

-10000

-8000

-6000

-4000

-2000

0

2000

Fault Level [%]

R[

QCR] (Btu/h)

0 10 20 30 40

-10000

-8000

-6000

-4000

-2000

0

2000

Fault Level [%]

R[

QER] (Btu/h)

0 10 20 30 40

-100

-50

0

50

100

150

Fault Level [%]

R[

Wcmp] (W)

0 10 20 30 40

-4

-3

-2

-1

0

1

Fault Level [%]

R[EER] (Btu/h·W)

Compressor leakage

Improper OD air flow rate

Improper ID air flow rate

Liquid line restriction

Refrigerant undercharge

Refrigerant overcharge

Non-condensable gases

Figure 5.17. Residuals for selected performance parameters for different faults. From the top left to 

right: QCR – condenser refrigerant-side capacity, QER – evaporator refrigerant-side capacity, 

Wcomp – compressor work, EER – energy efficiency ratio 

 (Test #5: 27.8 °C (82.0 °F) outdoor dry bulb temperature, 26.7 °C (80.0 °F) indoor dry bulb 

temperature and 50 % indoor relative humidity) 
53

5.2.2 Performance variations 

Figures 5.18 to 5.25 present percent variations of performance parameters R*

(φi) for different single-fault 

experiments and four operating conditions, where: 

( ) ,measurements ,reference ( ) *

,reference ,reference

R

R φ φ φ φ φ φ

− = = i i i

i

i i

 (5.1) 

Variation of residuals is denoted by the subscript which abbreviates the corresponding fault in Table 3.1. 

Reference values were obtained from 2nd order multivariate polynomial models described in Section 4.3. 

Figures 5.18 and 5.19 show the variation of evaporator sensible capacity (QEA,sens) and latent capacity 

(QEA,lat). The sensible capacity is most significantly degraded by low indoor air flow, refrigerant 

undercharge, and compressor fault. The latent capacity is degraded by the compressor fault, low outdoor 

air flow rate, but is increased at the low indoor air flow rate. This increase of latent capacity can be 

explained by a decreased air velocity allowing for longer contact between the air and the evaporator 

surface. The changes in the sensible and latent capacities are reflected in changes in the indoor air 

sensible heat ratio (SHR) shown in Figure 5.20. Sensible heat ratio increases as the latent capacity 

decreases since the faults degrade moisture condensation performance for the evaporator. 

Refrigerant mass flow rate (mR) is most affected by the compressor fault and low indoor air flow (Figure 

5.21). The same two faults affect the condenser capacity (QCR) and evaporator capacity (QER) which 

starts its degrading influence at the 10 % fault level of reduced air flow (Figures 5.22 and 5.23, 

respectively). Compressor work (Wcmp) is increased with increasing fault levels for non-condensable 

gases, refrigerant overcharge, low outdoor air flow rate, and is decreased somewhat with the compressor 

fault and refrigerant undercharge (Figure 5.24). 

Figures 5.22 and 5.23 show the condenser refrigerant capacity (QCR) and evaporator refrigerant capacity 

(QER), respectively. Each capacity is calculated based on the refrigerant flow rate and the local enthalpies 

at the inlet and exit of the heat exchanger. Condenser exit enthalpy was used as evaporator inlet enthalpy 

as it was. In case that the refrigerant in condenser exit is in two phase, the local enthalpy was calculated 

based on the assumption of a saturated liquid. Both of heat capacities were changed similarly with the 

previous performance parameters, but they increases uniquely for refrigerant overcharge fault. It means 

refrigerant overcharge fault does give a benefit in capacity. However, EER will be decreased since 

compressor work is increased more than the capacity benefit. 

Figure 5.25 shows the variation of energy efficiency ratio (EER). As expected, EER is decreased in all 

fault experiments. In cases of refrigerant overcharge and liquid line restriction, EER is relatively robust 

to fault level. EER shows no change at a low level of liquid line restriction fault. Since the TXV can 

control the suction line superheat close to its preset value, EER degradation appears only at a high fault 

level when the subcooled liquid refrigerant is flashed into two phase near the TXV. With the refrigerant 

overcharge fault, the increase of evaporator capacity can partially compensate compressor work. Thus 

only slight EER degradation is observed. However, the refrigerant overcharge fault should be monitored 

carefully since it can lead to compressor damage. 
54

0 2 4 6 8 10 12

90

95

100

105

Fault level (%)

R*

(QEA,sens)CMF (%)

0 10 20 30 40

90

95

100

105

Fault level (%)

R*

(QEA,sens)CF (%)

0 10 20 30 40

80

85

90

95

100

105

Fault level (%)

R*

(QEA,sens)EF (%)

0 5 10 15 20 25

90

95

100

105

Fault level (%)

R*

(QEA,sens)LL (%)

0 5 10 15 20 25 30

80

85

90

95

100

105

Fault level (%)

R*

(QEA,sens)UC (%)

0 5 10 15 20 25 30

90

95

100

105

110

Fault level (%)

R*

(QEA,sens)OC (%)

0 5 10 15 20

90

95

100

105

110

Fault level (%)

R*

(QEA,sens)NON (%)

OD 82 oF DB - ID 70 oF DB/50 % RH

OD 82 oF DB - ID 80 oF DB/50 % RH

OD 100 oF DB - ID 70 oF DB/50 % RH

OD 100 oF DB - ID 80 oF DB/50 % RH

Figure 5.18. Variation of evaporator sensible capacity (QEA,sens) at different faults. From the top left to 

right: compressor fault (CMF), improper outdoor air flow rate (CF), improper indoor air 

flow rate (EF), liquid line restriction (LL), refrigerant overcharge (OC), refrigerant 

undercharge (UC), and presence of non-condensable gases (NON)
55

0 2 4 6 8 10 12

60

70

80

90

100

110

Fault level (%)

R*

(QEA,lat)CMF (%)

0 10 20 30 40

70

80

90

100

110

Fault level (%)

R*

(QEA,lat)CF (%)

0 10 20 30 40

80

100

120

140

160

Fault level (%)

R*

(QEA,lat)EF (%)

0 5 10 15 20 25

80

90

100

110

120

Fault level (%)

R*

(QEA,lat)LL (%)

0 5 10 15 20 25 30

70

80

90

100

110

Fault level (%)

R*

(QEA,lat)UC (%)

0 5 10 15 20 25 30

80

90

100

110

120

Fault level (%)

R*

(QEA,lat)OC (%)

0 5 10 15 20

80

90

100

110

120

Fault level (%)

R*

(QEA,lat)NON (%)

OD 82 oF DB - ID 70 oF DB/50 % RH

OD 82 oF DB - ID 80 oF DB/50 % RH

OD 100 oF DB - ID 70 oF DB/50 % RH

OD 100 oF DB - ID 80 oF DB/50 % RH

Figure 5.19. Variation of evaporator latent capacity (QEA,lat) at different faults. From the top left to right: 

compressor fault (CMF), improper outdoor air flow rate (CF), improper indoor air flow rate 

(EF), liquid line restriction (LL), refrigerant overcharge (OC), refrigerant undercharge (UC), 

and presence of non-condensable gases (NON) 
56

0 2 4 6 8 10 12

95

100

105

110

Fault level (%)

R*(SHR)CMF (%)

0 10 20 30 40

95

100

105

110

Fault level (%)

R*(SHR)CF (%)

0 10 20 30 40

85

90

95

100

105

Fault level (%)

R*(SHR)EF (%)

0 5 10 15 20 25

90

95

100

105

110

Fault level (%)

R*(SHR)LL (%)

0 5 10 15 20 25 30

90

95

100

105

110

Fault level (%)

R*(SHR)UC (%)

0 5 10 15 20 25 30

90

95

100

105

110

Fault level (%)

R*(SHR)OC (%)

0 5 10 15 20

90

95

100

105

110

Fault level (%)

R*(SHR)NON (%)

OD 82 oF DB - ID 70 oF DB/50 % RH

OD 82 oF DB - ID 80 oF DB/50 % RH

OD 100 oF DB - ID 70 oF DB/50 % RH

OD 100 oF DB - ID 80 oF DB/50 % RH

Figure 5.20. Variation of indoor air sensible heat ratio (SHR) at different faults. From the top left to 

right: compressor fault (CMF), improper outdoor air flow rate (CF), improper indoor air 

flow rate (EF), liquid line restriction (LL), refrigerant overcharge (OC), refrigerant 

undercharge (UC), and presence of non-condensable gases (NON) 
57

0 2 4 6 8 10 12

85

90

95

100

105

Fault level (%)

R*

(mR)CMF (%)

0 10 20 30 40

90

95

100

105

Fault level (%)

R*

(mR)CF (%)

0 10 20 30 40

90

95

100

105

Fault level (%)

R*

(mR)EF (%)

0 5 10 15 20 25

90

95

100

105

Fault level (%)

R*

(mR)LL (%)

0 5 10 15 20 25 30

20

40

60

80

100

120

Fault level (%)

R*

(mR)UC (%)

0 5 10 15 20 25 30

90

95

100

105

110

Fault level (%)

R*

(mR)OC (%)

0 5 10 15 20

90

95

100

105

Fault level (%)

R*

(mR)NON (%)

OD 82 oF DB - ID 70 oF DB/50 % RH

OD 82 oF DB - ID 80 oF DB/50 % RH

OD 100 oF DB - ID 70 oF DB/50 % RH

OD 100 oF DB - ID 80 oF DB/50 % RH

Figure 5.21. Variation of refrigerant mass flow rate (mR) at different faults. From the top left to right: 

compressor fault (CMF), improper outdoor air flow rate (CF), improper indoor air flow rate 

(EF), liquid line restriction (LL), refrigerant overcharge (OC), refrigerant undercharge (UC), 

and presence of non-condensable gases (NON) 
58

0 2 4 6 8 10 12

85

90

95

100

105

Fault level (%)

R*

(QCR)CMF (%)

0 10 20 30 40

85

90

95

100

105

Fault level (%)

R*

(QCR)CF (%)

0 10 20 30 40

90

95

100

105

Fault level (%)

R*

(QCR)EF (%)

0 5 10 15 20 25

90

95

100

105

Fault level (%)

R*

(QCR)LL (%)

0 5 10 15 20 25 30

20

40

60

80

100

120

Fault level (%)

R*

(QCR)UC (%)

0 5 10 15 20 25 30

90

95

100

105

110

Fault level (%)

R*

(QCR)OC (%)

0 5 10 15 20

90

95

100

105

110

Fault level (%)

R*

(QCR)NON (%)

OD 82 oF DB - ID 70 oF DB/50 % RH

OD 82 oF DB - ID 80 oF DB/50 % RH

OD 100 oF DB - ID 70 oF DB/50 % RH

OD 100 oF DB - ID 80 oF DB/50 % RH

Figure 5.22. Variation of condenser refrigerant-side capacity (QCR) at different faults. From the top left 

to right: compressor fault (CMF), improper outdoor air flow rate (CF), improper indoor air 

flow rate (EF), liquid line restriction (LL), refrigerant overcharge (OC), refrigerant 

undercharge (UC), and presence of non-condensable gases (NON) 
59

0 2 4 6 8 10 12

85

90

95

100

105

Fault level (%)

R*

(QER)CMF (%)

0 10 20 30 40

85

90

95

100

105

Fault level (%)

R*

(QER)CF (%)

0 10 20 30 40

90

95

100

105

Fault level (%)

R*

(QER)EF (%)

0 5 10 15 20 25

90

95

100

105

Fault level (%)

R*

(QER)LL (%)

0 5 10 15 20 25 30

20

40

60

80

100

120

Fault level (%)

R*

(QER)UC (%)

0 5 10 15 20 25 30

90

95

100

105

110

Fault level (%)

R*

(QER)OC (%)

0 5 10 15 20

90

95

100

105

110

Fault level (%)

R*

(QER)NON (%)

OD 82 oF DB - ID 70 oF DB/50 % RH

OD 82 oF DB - ID 80 oF DB/50 % RH

OD 100 oF DB - ID 70 oF DB/50 % RH

OD 100 oF DB - ID 80 oF DB/50 % RH

Figure 5.23. Variation of evaporator refrigerant-side capacity (QER) at different faults. From the top left 

to right: compressor fault (CMF), improper outdoor air flow rate (CF), improper indoor air 

flow rate (EF), liquid line restriction (LL), refrigerant overcharge (OC), refrigerant 

undercharge (UC), and presence of non-condensable gases (NON) 
60

0 2 4 6 8 10 12

90

95

100

105

Fault level (%)

R*

(Wcmp)CMF (%)

0 10 20 30 40

95

100

105

110

Fault level (%)

R*

(Wcmp)CF (%)

0 10 20 30 40

90

95

100

105

110

Fault level (%)

R*

(Wcmp)EF (%)

0 5 10 15 20 25

90

95

100

105

110

Fault level (%)

R*

(Wcmp)LL (%)

0 5 10 15 20 25 30

90

95

100

105

Fault level (%)

R*

(Wcmp)UC (%)

0 5 10 15 20 25 30

95

100

105

110

Fault level (%)

R*

(Wcmp)OC (%)

0 5 10 15 20

95

100

105

110

Fault level (%)

R*

(Wcmp)NON (%)

OD 82 oF DB - ID 70 oF DB/50 % RH

OD 82 oF DB - ID 80 oF DB/50 % RH

OD 100 oF DB - ID 70 oF DB/50 % RH

OD 100 oF DB - ID 80 oF DB/50 % RH

Figure 5.24. Variation of compressor work (Wcmp) at different faults. From the top left to right: 

compressor fault (CMF), improper outdoor air flow rate (CF), improper indoor air flow rate 

(EF), liquid line restriction (LL), refrigerant overcharge (OC), refrigerant undercharge (UC), 

and presence of non-condensable gases (NON) 
61

0 2 4 6 8 10 12

85

90

95

100

105

Fault level (%)

R*(EER)CMF (%)

0 10 20 30 40

70

80

90

100

110

Fault level (%)

R*(EER)CF (%)

0 10 20 30 40

90

95

100

105

Fault level (%)

R*(EER)EF (%)

0 5 10 15 20 25

90

95

100

105

Fault level (%)

R*(EER)LL (%)

0 5 10 15 20 25 30

20

40

60

80

100

120

Fault level (%)

R*(EER)UC (%)

0 5 10 15 20 25 30

90

95

100

105

Fault level (%)

R*(EER)OC (%)

0 5 10 15 20

90

95

100

105

Fault level (%)

R*(EER)NON (%)

OD 82 oF DB - ID 70 oF DB/50 % RH

OD 82 oF DB - ID 80 oF DB/50 % RH

OD 100 oF DB - ID 70 oF DB/50 % RH

OD 100 oF DB - ID 80 oF DB/50 % RH

Figure 5.25. Variation of energy efficiency ratio (EER) at different faults. From the top left to right: 

compressor fault (CMF), improper outdoor air flow rate (CF), improper indoor air flow rate 

(EF), liquid line restriction (LL), refrigerant overcharge (OC), refrigerant undercharge (UC), 

and presence of non-condensable gases (NON) 
62

5.3 Transient Behavior at Different Refrigerant Charge Levels 

Figure 5.26 represents a sample of a transient test at the condition of 37.8 °C (100.0 °F) outdoor dry bulb 

temperature, 21.1 °C (70.0 °F) indoor dry bulb temperature and 50 % indoor relative humidity (Test #8). 

The refrigerant charge level was 20 % undercharged. The test was done with on-off cyclic operation with 

different turn-off intervals. Five temperature measurements, condenser saturation temperature (TCR), 

evaporator saturation temperature (TER), compressor discharge wall temperature (TDW), evaporator exit 

superheat (∆Tsh), and liquid line subcooling (∆Tsc) were recorded every 5 s. As shown at the top of Figure 

5.26, the turn-off period varied with (24, 24, 6, and 12) min off with a 6 min on-period in between each 

off period. The first two 24 minute off-periods were intended to verify the repeatability of any startup 

transients. 

Figure 5.27 shows the time variation of measurements during on-off cyclic operation with different turnoff intervals at the normal refrigerant charge. Without regard to the turn-off period, all the measurements 

show similar transient behavior. Less variation during the turn-on transients is observed when the system 

is turned off for a shorter period. Based on the superheat change in Figure 5.27(d), the TXV behavior can 

be indirectly estimated. The TXV is mostly closed during the off period since superheat is less than the 

normal level which is approximately 8.3 °C (15.0 °F). Right after the system is turned on, the TXV is 

still closed and superheat decreases. Shortly thereafter, the TXV is opened due to increased superheat 

since there is no refrigerant supply through the TXV. After the TXV opens, liquid refrigerant flows out 

of the evaporator. This drops superheat to nothing, meaning two-phase flow, and the TXV shuts again. 

After the liquid refrigerant evaporates, the TXV reopens and then starts to control superheat. This trend is 

also shown in the evaporator saturation temperature in Figure 5.27(b) and refrigerant mass flow rate in 

Figure 5.27(f). Figure 5.27(e) shows the variation of liquid line subcooling. A little while after startup, 

subcooling is slowly increased to a desired value as expected. In the current system, the subcooling 

thermocouple was attached right before the TXV. After the system was turned off, the temperature at the 

TXV upstream gradually approaches the indoor temperature of 21.1 °C (70.0 °F). Since the condenser 

and liquid line pressure stayed at about the same level, corresponding to the saturation temperature of 

37.8 °C (100.0 °F), subcooling increases after the system shutdown. 

Figure 5.28 shows time variation of measurements with different refrigerant charge levels. Normal 

refrigerant charge, 20 % undercharge, and 30 % undercharge were selected. The system was cyclically 

operated for 24 min off, 6 min on, and 24 min off. Distinct differences during the off period are not 

observed. During the on period, superheat variation in Figure 5.28(d) shows that transient behaviors vary 

with charge levels; however, the observed differences are not large enough for use by a FDD scheme for 

detecting improper refrigerant charge in the system. 
63

-20

0

20

40

60

80

100

120

140

160

180

200

0 15 30 45 60 75 90 105 120

Time (min)

Temperature (oF)

∆Tsh (o

F)

TER (o

F)

TDW (o

F)

TCR (o

F)

∆Tsc (o

F)

24

OFF period (min)

ON period (min)

24 6 12

6 66 6

Outdoor air temperature, 100oF

Indoor air temperature, 70oF

Figure 5.26. Real-time transient test of on-off cyclic operation with different turn-off intervals at the 

20 % fault of refrigerant undercharge fault (Test #8: 37.8 °C (100.0 °F) outdoor dry bulb 

temperature, 21.1 °C (70.0 °F) indoor dry bulb temperature and 50 % indoor relative 

humidity) 
64

50

70

90

110

130

150

170

190

210

0 100 200 300 400 500 600 700 800 900 1000

Time (s)

TDW (oF)

24 min off

12 min off

6 min off

(a) Compressor discharge wall temperature 

30

35

40

45

50

55

60

65

0 100 200 300 400 500 600 700 800 900 1000

Time (s)

TER (oF)

24 min off

12 min off

6 min off

(b) Evaporator exit saturation temperature 

90

95

100

105

110

115

120

0 100 200 300 400 500 600 700 800 900 1000

Time (s)

TCR (oF)

24 min off

12 min off

6 min off

(c) Condenser inlet saturation temperature 

Figure 5.27. Time variation of measurements during on-off cyclic operation with different turn-off 

intervals at the normal refrigerant charge (Test #8: 37.8 °C (100.0 °F) outdoor dry bulb 

temperature, 21.1 °C (70.0 °F) indoor dry bulb temperature and 50 % indoor relative 

humidity) 
65

0

5

10

15

20

25

0 100 200 300 400 500 600 700 800 900 1000

Time (s)

∆Tsh (oF)

24 min off

12 min off

6 min off

(d) Evaporator exit superheat 

-5

0

5

10

15

20

25

30

35

40

0 100 200 300 400 500 600 700 800 900 1000

Time (s)

∆Tsc (oF)

24 min off

12 min off

6 min off

(e) Condenser exit liquid line subcooling 

-100

0

100

200

300

400

500

0 100 200 300 400 500 600 700 800 900 1000

Time (s)

mr (lbm/hr)

24 min off

12 min off

6 min off

(f) Refrigerant mass flow rate 

Figure 5.27. Time variation of measurements during on-off cyclic operation with different turn-off 

intervals at the normal refrigerant charge (Test #8: 37.8 °C (100.0 °F) outdoor dry bulb 

temperature, 21.1 °C (70.0 °F) indoor dry bulb temperature and 50 % indoor relative 

humidity) (continued) 
66

0

50

100

150

200

250

0 200 400 600 800 1000 1200 1400 1600

Time (s)

TDW (oF)

No fault

20 % undercharge

30 % undercharge

(a) Compressor discharge wall temperature 

20

25

30

35

40

45

50

55

60

65

0 200 400 600 800 1000 1200 1400 1600

Time (s)

TER (oF)

No fault

20 % undercharge

30 % undercharge

(b) Evaporator exit saturation temperature 

80

85

90

95

100

105

110

115

120

0 200 400 600 800 1000 1200 1400 1600

Time (s)

TCR (oF)

No fault

20 % undercharge

30 % undercharge

(c) Condenser inlet saturation temperature 

Figure 5.28. Time variation of measurements during on-off cyclic operation with different refrigerant 

charge levels (Turn-off period: 24 min, Test #8: 37.8 °C (100.0 °F) outdoor dry bulb 

temperature, 21.1 °C (70.0 °F) indoor dry bulb temperature and 50 % indoor relative 

humidity) 
67

0

5

10

15

20

25

30

0 200 400 600 800 1000 1200 1400 1600

Time (s)

∆Tsh (oF)

No fault

20 % undercharge

30 % undercharge

(d) Evaporator exit superheat 

-10

-5

0

5

10

15

20

25

30

35

40

0 200 400 600 800 1000 1200 1400 1600

Time (s)

∆Tsc (oF)

No fault

20 % undercharge

30 % undercharge

(e) Condenser exit liquid line subcooling 

-100

0

100

200

300

400

500

0 200 400 600 800 1000 1200 1400 1600

Time (s)

mr (lbm/hr)

No fault

20 % undercharge

30 % undercharge

(f) Refrigerant mass flow rate 

Figure 5.28. Time variation of measurements during on-off cyclic operation with different refrigerant 

charge levels (Turn-off period: 24 min, Test #8: 37.8 °C (100.0 °F) outdoor dry bulb 

temperature, 21.1 °C (70.0 °F) indoor dry bulb temperature and 50 % indoor relative 

humidity) (continued)
68

 CHAPTER 6. CONCLUDING REMARKS 

This report provides basic information on the behavior of a R410A residential unitary split heat pump 

during no-fault and fault operation. The system was installed in two separate environmental chambers 

and was operated in the cooling mode. Superheat at the evaporator exit was controlled by a TXV. The 

system was modified to implement seven artificial faults: compressor/reversing valve leakage, improper 

outdoor air flow, improper indoor air flow, liquid line restriction, refrigerant undercharge, refrigerant 

overcharge, and presence of non-condensable gas. These faults were imposed at two or more levels. 

To estimate the reference values of the system behavior, no-fault tests were performed. The no-fault test 

results were used in the formulation of the reference model, which consisted of 2nd order multivariate 

regressive polynomials calculated as a function of three input parameters: outdoor air temperature, indoor 

air temperature, and indoor dew point temperature. The developed steady-state detector calculated 

standard deviations of liquid line subcooling and evaporator exit superheat measurements for determining 

whether the system reached steady state. The steady-state detector filtered measured data based on a 

moving window and thresholds. In this study, at least 12 min were monitored to minimize false steadystate indications. 

Using the no-fault model as a reference, feature residuals were observed for single faults. Since the 

system was controlled by a TXV, the system could adapt itself to external variation very well. Thus 

faulty behavior was not as clear as would be the case for a system equipped with an orifice expansion 

device; however, some measurements showed enough large variations to detect faults. 

The distinctiveness of a fault depended on the TXV status. For the tests with liquid line restriction, little 

variation was observed due to the TXV’s control of superheat. But once the liquid line was restricted 

until the subcooled refrigerant started to flash, even the maximum opening of the TXV could not control 

the superheat, and the system responded like a fixed orifice system. In this case, a TXV with a larger 

orifice size would be required, which implies that the fault effect is also influenced by the effective orifice 

size of the TXV. 

For the heat exchanger fault caused by improper air flow, the fault behavior depends on the sizing of the 

heat exchanger. Oversizing the heat exchanger or fan capacity makes the system more robust in the 

presence of an improper air flow fault. Installing a liquid line receiver could also mollify the refrigerant 

undercharge/overcharge fault and non-condensable gas fault. 

The dynamic tests at different refrigerant charges showed minor effects on the system behavior for 

various off-periods between shutoff and startup of the system. The most influenced parameter was the 

evaporator exit temperature; however, none of the monitored features varied sufficiently to diagnose 

improper refrigerant charge. 

The results reported here will be used in a follow-up study for the development of FDD methods for airconditioners and heat pumps operating in the cooling mode.
69

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72

APPENDIX A. LIST OF LABORATORY INSTRUMENTATION 

Table A.1. Data acquisition channel assignment for FDD split-system testing1

Channel Sensor type Description 

0 T-type thermocouple (Indoor) Nozzle Temp on pitot probe 

1 T-type thermocouple (Indoor) Exit Air Grid, T-couple 1 

2 T-type thermocouple (Indoor) Exit Air Grid, T-couple 2 

3 T-type thermocouple (Indoor) Exit Air Grid, T-couple 3 

4 T-type thermocouple (Indoor) Exit Air Grid, T-couple 4 

5 T-type thermocouple (Indoor) Exit Air Grid, T-couple 5 

6 T-type thermocouple (Indoor) Exit Air Grid, T-couple 6 

7 T-type thermocouple (Indoor) Exit Air Grid, T-couple 7 

8 T-type thermocouple (Indoor) Exit Air Grid, T-couple 8 

9 T-type thermocouple (Indoor) Exit Air Grid, T-couple 9 

10 T-type thermocouple (Indoor) Exit Air Grid, T-couple 10 

11 T-type thermocouple (Indoor) Exit Air Grid, T-couple 11 

12 T-type thermocouple (Indoor) Exit Air Grid, T-couple 12 

13 T-type thermocouple (Indoor) Exit Air Grid, T-couple 13 

14 T-type thermocouple (Indoor) Exit Air Grid, T-couple 14 

15 T-type thermocouple (Indoor) Exit Air Grid, T-couple 15 

16 T-type thermocouple (Indoor) Exit Air Grid, T-couple 16 

17 T-type thermocouple (Indoor) Exit Air Grid, T-couple 17 

18 T-type thermocouple (Indoor) Exit Air Grid, T-couple 18 

19 T-type thermocouple (Indoor) Exit Air Grid, T-couple 19 

20 T-type thermocouple (Indoor) Exit Air Grid, T-couple 20 

21 T-type thermocouple (Indoor) Exit Air Grid, T-couple 21 

22 T-type thermocouple (Indoor) Exit Air Grid, T-couple 22 

23 T-type thermocouple (Indoor) Exit Air Grid, T-couple 23 

24 T-type thermocouple (Indoor) Exit Air Grid, T-couple 24 

25 T-type thermocouple (Indoor) Exit Air Grid, T-couple 25 

26 T-type thermocouple (Outdoor) Cond Inlet Air flow #2 

27 T-type thermocouple (Outdoor) Cond Inlet Air flow #5 

28 N/A 

29 T-type thermocouple (Outdoor) Cond Inlet Air flow #4 

30 N/A 

31 T-type thermocouple (Outdoor) Comp Suction – Well Temp 

32 T-type thermocouple (Indoor) Inlet Air Grid, T-couple 1 

33 T-type thermocouple (Indoor) Inlet Air Grid, T-couple 2 

34 T-type thermocouple (Indoor) Inlet Air Grid, T-couple 3 

35 T-type thermocouple (Indoor) Inlet Air Grid, T-couple 4 

36 T-type thermocouple (Indoor) Inlet Air Grid, T-couple 5 

37 T-type thermocouple (Indoor) Inlet Air Grid, T-couple 6 

38 T-type thermocouple (Indoor) Inlet Air Grid, T-couple 7 

39 T-type thermocouple (Indoor) Inlet Air Grid, T-couple 8 

40 T-type thermocouple (Indoor) Inlet Air Grid, T-couple 9 

41 T-type thermocouple (Indoor) Inlet Air Grid, T-couple 10 

42 T-type thermocouple (Indoor) Inlet Air Grid, T-couple 11 
73

Channel Sensor type Description 

43 T-type thermocouple (Indoor) Inlet Air Grid, T-couple 12 

44 T-type thermocouple (Indoor) Inlet Air Grid, T-couple 13 

45 T-type thermocouple (Indoor) Inlet Air Grid, T-couple 14 

46 T-type thermocouple (Indoor) Inlet Air Grid, T-couple 15 

47 T-type thermocouple (Indoor) Inlet Air Grid, T-couple 16 

48 T-type thermocouple (Indoor) Inlet Air Grid, T-couple 17 

49 T-type thermocouple (Indoor) Inlet Air Grid, T-couple 18 

50 T-type thermocouple (Indoor) Inlet Air Grid, T-couple 19 

51 T-type thermocouple (Indoor) Inlet Air Grid, T-couple 20 

52 T-type thermocouple (Indoor) Inlet Air Grid, T-couple 21 

53 T-type thermocouple (Indoor) Inlet Air Grid, T-couple 22 

54 T-type thermocouple (Indoor) Inlet Air Grid, T-couple 23 

55 T-type thermocouple (Indoor) Inlet Air Grid, T-couple 24 

56 T-type thermocouple (Indoor) Inlet Air Grid, T-couple 25 

57 T-type thermocouple (Indoor) Evap Bend 23 - 24 R 

58 T-type thermocouple (Indoor) Evap Outlet (11) R 

59 T-type thermocouple (Indoor) Evap Bend 27 - 28 R 

60 N/A 

61 T-type thermocouple (Indoor) Cond Inlet 2nd bunch (Large diameter tubing) 

62 T-type thermocouple (Outdoor) Comp Discharge Line Wall 

63 T-type thermocouple (Outdoor) Cond Inlet Air flow #3 

64 N/A 

65 N/A 

66 N/A 

67 T-type thermocouple (Indoor) Evap Bend 12 - 13 R 

68 T-type thermocouple (Indoor) Vapor Ref Evap exit #2 Well 

69 T-type thermocouple (Indoor) Vapor Ref Evap Exit #1 Well 

70 N/A 

71 T-type thermocouple (Indoor) Liq Ref Evap Inlet #2 

72 N/A 

73 T-type thermocouple (Indoor) Liq Ref Evap Inlet #1 

74 T-type thermocouple (Indoor) Evap Bend 53 - 54 L 

75 T-type thermocouple (Indoor) Evap Bend 16 - 17 R 

76 T-type thermocouple (Indoor) Evap Bend 20 - 40 R 

77 T-type thermocouple (Indoor) Evap Outlet, L exit 11 

78 T-type thermocouple (Indoor) Evap Bend 53 - 54 R 

79 T-type thermocouple (Indoor) Evap Bend 27 - 28 L 

80 T-type thermocouple (Indoor) Evap Bend 13 - 12 L 

81 T-type thermocouple (Indoor) Evap Bend 17 - 16 L 

82 T-type thermocouple (Indoor) Evap Bend 57 - 58 R 

83 T-type thermocouple (Indoor) Evap Bend 40 - 20 L 

84 T-type thermocouple (Indoor) Evap Bend 57 - 58 L 

85 T-type thermocouple (Indoor) Outlet Air Temp#1 @ MEMS RH Sensor 

86 T-type thermocouple (Indoor) Evap Bend 23 - 24 L 

87 T-type thermocouple (Outdoor) Comp Shell - TOP 

88 T-type thermocouple (Outdoor) Comp Suction Line - Wall 

89 T-type thermocouple (Indoor) Outlet Air Temp#2 @ MEMS RH Sensor 

90 T-type thermocouple (Outdoor) Cond Exit Air flow Temp #1 ON TOP OF FAN 
74

Channel Sensor type Description 

91 T-type thermocouple (Outdoor) Fan Motor Case Temp (F) 

92 T-type thermocouple (Outdoor) Cond Exit Air flow Temp #2 ON TOP OF FAN 

93 T-type thermocouple (Indoor) Coriollis Flow Meter Inlet Temp - Wall 

94 T-type thermocouple (Outdoor) Cond Internal Air Right side wrt Comp 

95 T-type thermocouple (Outdoor) Cond Internal Air Left side wrt Comp 

96 T-type thermocouple (Outdoor) Cond Inlet Air flow Temp #1 

97 T-type thermocouple (Outdoor) Cond Air flow Inlet Temp #6 

98 T-type thermocouple (Outdoor) Cond Outlet - 2nd Bunch (on small feeder tube) 

99 T-type thermocouple (Outdoor) Liq Line Temp @ Service Valve 

100 T-type thermocouple (Outdoor) Comp Shell at Bottom - Oil Level 

101 T-type thermocouple (Outdoor) Vapor Temp @ Service Valve 

102 AP transducer (Outdoor) P1, Comp Discharge Pressure, VDC 

103 AP transducer (Outdoor) P2, Vapor Coil Inlet, VDC 

104 AP transducer (Outdoor) P6, Vapor Service Valve, VDC 

105 AP transducer (0-500 psia) (Outdoor) P5, Comp Suction, VDC 

106 N/A 

107 DP transducer (0-1" H2O) (Outdoor) Coil Air DP, 0-5 VDC 

108 DP transducer (0-1" H2O) (Indoor) Nozzle AIR DP #2, 0-5 VDC 

109 DP transducer (0-10 psid) (Indoor) Coil Refrig DP, 0.05-5.05VDC 

110 DP transducer (0-25 psid) (Outdoor) Coil Refrig DP, 0-5 VDC 

111 DP transducer (0-25 psid) (Outdoor) Liquid line Refrig DP, 0.05-5.05 VDC 

112 Coriolis mass flow meter (Indoor) Refrigerant mass flow meter @ Evap Inlet, lbm/h 

113 Coriolis mass flow meter 

(30-120 lbm/ft3) (Indoor) Refrigerant density @ Evap Inlet 

114 DP transducer (Indoor) Evap Coil Airside DP (in H2O) 

115 DP transducer (Indoor) Nozzle DP in Airchamber (in H2O) 

116 Dewpoint sensor (Indoor) Evap Inlet Dewpoint (F) 

117 Dewpoint sensor (Indoor) Evap Exit Dewpoint (F) 

118 N/A 

119 RH sensor (Indoor) MEMS Sensor, Inlet RH% 

120 T-type thermocouple (Indoor) Airside Evap Tpile voltage, VDC 

121 Barometric pressure 

transducer Barometric Pressure, 0-10 VDC 

122 RH sensor (Indoor) MEMS Sensor, Exit RH% 

123 DC Power meter (Indoor) MEMS Sensor Power Supply Voltage (VDC) 

124 N/A 

125 AP transducer (0-500 psia) (Indoor) Overall evap exit pres 

126 AP transducer (0-500 psia) (Outdoor) Liquid Line Pres @ Service Valve 

127 AP transducer (0-500 psia) (Indoor) Evap Inlet Liquid Pres, VDC 

1

 In Figure 3.8, numbers less than 128 are identical with channel number in Table A.1. Numbers over 127 can be calculated by 

the listed measurements in Table A.1. 
75

Table A.2. Post-processed data list for FDD analysis 

List # Abbreviation BG unit SI unit 

0 Barometric Pressure inHg kPa 

1 OD Air Inlet Temp °F °C 

2 OD Air Inlet DewPoint Temp °F °C 

3 OD Air Inlet Relative Humidity - - 

4 OD Air Inlet Density lbm/ft3 kg/m3

5 OD Air Temp Increase °F °C 

6 OD Air Exit Temp °F °C 

7 OD Air Flow Rate SCFM m3/s 

8 ID Air Inlet Temp °F °C 

9 ID Air Inlet DewPoint Temp °F °C 

10 ID Air Inlet Rel Humidity - - 

11 ID Air Inlet Density lbm/ft3 kg/m3

12 ID Air Temp Drop °F °C 

13 ID Air Exit Temp °F °C 

14 ID Air Exit DewPoint Temp °F °C 

15 ID Air Exit Rel Humidity - - 

16 ID Air Flow Rate SCFM m3/s 

17 ID Sensible Capacity Btu/h W 

18 ID Latent Capacity Btu/h W 

19 ID Air Total Capacity Btu/h W 

20 ID Air Sensible Heat Ratio - - 

21 COMP Suction Temp °F °C 

22 COMP Discharge Temp °F °C 

23 COND Inlet Temp °F °C 

24 COND Inlet Pressure psia kPa 

25 COND Inlet Tsat °F °C 

26 COND Exit Temp °F °C 

27 COND Exit Pressure psia kPa 

28 COND Exit Tsat °F °C 

29 COND Exit Subcooling °F °C 

30 COND DP psid kPa 

31 TXV Upstream P psia kPa 

32 Liquid Line DP psia kPa 

33 Liquid Line DT °F °C 

34 Refrigerant Flow Rate lbm/h kg/s 

35 TXV DP psia kPa 

36 EVAP Inlet Temp °F °C 

37 EVAP Exit Temp °F °C 

38 EVAP Exit Pressure psia kPa 

39 EVAP Exit Tsat °F °C 

40 EVAP Exit Superheat °F °C 

41 EVAP DP psid kPa 

42 COND Capacity Btu/h W 

43 EVAP Capacity Btu/h W 

44 COMP Power W W 

45 EER(BG)/COP(SI) Btu/h.W - 
76

APPENDIX B. COEFFICIENTS OF MULTIVARIATE REFERENCE MOD

Table B.1. Coefficients of second order multivariate polynomial reference model in Equation (4.7b) for selected features 

fault estimation 

2 22 φi OD ID IDP OD ID ID IDP IDP OD OD ID IDP =+ + + + + + + + + a aT aT aT aT T aT T aT T aT aT aT 01 2 3 4 5 6 7 8 9 1

Feature/ parameters unit a0 a1 a2 a3 a4 a5 a6 a7 TER °F 4.37E+05 -1.57E+02 -1.08E+04 -3.69E+02 -6.76E-01 1.04E+01 1.87E+00 1.25E-01 ∆Tsh °F -1.16E+05 1.23E+02 2.93E+03 1.51E+02 1.35E+00 -1.44E+01 -3.32E+00 -7.18E-01 TDW °F 6.78E+00 -1.52E-03 -1.49E-01 -1.16E-02 -7.82E-05 6.46E-04 6.69E-05 3.22E-05 TCR °F -1.15E+03 1.83E+00 3.48E+01 5.69E-02 1.61E-02 -1.22E-01 -7.23E-03 -1.54E-02 ∆Tsc °F 1.20E+03 7.21E+01 5.56E+02 3.34E+01 -4.84E-01 -7.60E+00 -1.17E+00 -3.46E-01 ∆TCA °F -1.19E+04 1.11E+02 7.71E+02 4.14E+01 -9.11E-01 -7.38E+00 -1.28E+00 -9.15E-01 ∆TEA °F -1.93E+03 -1.08E+01 8.47E+01 -9.05E+00 -3.15E-02 3.01E-01 5.06E-03 2.22E-01 ∆TLL °F 8.24E+01 -3.05E-01 -1.36E+00 1.35E-01 -1.46E-03 -6.21E-03 -1.10E-03 1.12E-03 QEA,sens Btu/h 4.26E+01 1.36E-01 -9.02E-01 6.75E-02 1.66E-03 -1.13E-02 -1.88E-03 -3.81E-04 QEA,lat Btu/h -1.89E+00 -3.68E-01 6.74E-01 5.77E-02 -3.05E-03 4.74E-03 -1.41E-03 3.46E-03 SHR - 2.72E+02 1.02E+00 -6.01E+00 -2.25E-02 -1.11E-02 2.08E-02 -2.84E-03 8.73E-03 mR lbm/h 1.08E+02 1.19E+00 -2.80E+00 3.52E-02 -4.19E-04 9.65E-04 -9.30E-04 -8.23E-04 QCR Btu/h 5.48E+02 -2.31E-01 -1.42E+01 -3.71E-02 1.34E-03 7.83E-03 -8.02E-04 6.98E-04 QER Btu/h -1.96E+01 1.47E-01 5.62E-01 2.96E-02 -5.75E-04 5.51E-04 -7.00E-04 -4.11E-04 Wcmp W 2.10E+02 1.96E-02 -5.16E+00 -1.64E-01 -1.53E-03 1.23E-02 1.69E-03 -3.68E-04 EER Btu/h.W 8.69E+00 1.04E-01 -3.14E-01 -1.36E-02 -2.19E-04 4.29E-04 -6.21E-05 -3.38E-04 

1 Input temperature parameters of TID, TOD, and TIDP have the unit of °F. The features and parameters φi are interpolated within the range of 21.1 

(80.0 °F) and 21.1 °C (70.0 °F) ≤ TOD ≤ 37.8 °C (100.0 °F). The interpolation range for TIDP is associated with the test condition from dry coil eva

humidity of 50 %. For example, -1.1 °C (30.0 °F) ≤ TIDP ≤ 10.3 °C (50.5 °F) for TID = 21.1 °C (70.0 °F) and -1.1 °C (30.0 °F) ≤ TIDP ≤ 15.8 °C 

(80.0 °F). 
77

APPENDIX C. EXTENDED PERFORMANCE CHARTS 

Charts of an additional 16 parameters are plotted for no-fault and single-fault tests. These charts are 

extended plots of single-fault plots in section 5.1. Below is the list of 16 parameters. 

SCFMCA outdoor air flow rate (ft3

/min) 

φEAI indoor air inlet relative humidity 

TEAOD indoor air exit dew point temperature (°F) 

φEAO indoor air exit relative humidity 

SCFMEA indoor air flow rate (ft3

/min) 

TSW compressor suction wall temperature (°F) 

TCRI condenser refrigerant inlet temperature (°F) 

PCRI condenser refrigerant inlet pressure (psia) 

TCRO,sat condenser refrigerant exit saturation temperature (°F) 

∆PCR condenser refrigerant pressure drop (psid) 

PTXV,up TXV upstream pressure (psia) 

∆PLL liquid line pressure drop (psid) 

TERI evaporator refrigerant inlet temperature (°F) 

PERO evaporator refrigerant exit pressure (psia) 

∆PER evaporator refrigerant pressure drop (psid) 

∆Tsh – ∆Tsc difference between superheat and subcooling (°F) 
78

C.1 No-Fault Tests 

60 70 80 90 100 110

2000

2100

2200

2300

Outdoor Temperature (oF)

SCFMCA

60 70 80 90 100 110

0

0.2

0.4

0.6

0.8

Outdoor Temperature (oF)

φ EAI (%)

60 70 80 90 100 110

30

40

50

60

Outdoor Temperature (oF)

TEAOD (oF)

60 70 80 90 100 110

0.2

0.4

0.6

0.8

1

Outdoor Temperature (oF)

φ EAO (%)

60 70 80 90 100 110

1000

1020

1040

1060

1080

Outdoor Temperature (oF)

SCFMEA

60 70 80 90 100 110

55

60

65

70

75

Outdoor Temperature (oF)

TSW (oF)

60 70 80 90 100 110

120

140

160

180

Outdoor Temperature (oF)

TCRI (oF)

60 70 80 90 100 110

250

300

350

400

450

Outdoor Temperature (oF)

PCRI (psia)

 

OD 82 oF DB - ID 70 oF DB/50 % RH

OD 82 oF DB - ID 80 oF DB/50 % RH

OD 100 oF DB - ID 70 oF DB/50 % RH

OD 100 oF DB - ID 80 oF DB/50 % RH

Figure C.1. Selected parameters from the no-fault tests. From the top left to right: SCFMCA – outdoor 

air flow rate, φEAI – indoor air inlet relative humidity, TEAOD – indoor air exit dew point 

temperature, φEAO – indoor air exit relative humidity, SCFMEA – indoor air flow rate, TSW – 

compressor suction wall temperature, TCRI – condenser refrigerant inlet temperature, PCRI – 

condenser refrigerant inlet pressure 
79

60 70 80 90 100 110

80

90

100

110

120

Outdoor Temperature (oF)

TCRO,sat (oF)

60 70 80 90 100 110

1.5

2

2.5

3

Outdoor Temperature (oF)

∆PCR (psid)

60 70 80 90 100 110

250

300

350

400

450

Outdoor Temperature (oF)

PTXV,up (psia)

60 70 80 90 100 110

8

10

12

14

16

Outdoor Temperature (oF)

∆PLL (psid)

60 70 80 90 100 110

40

45

50

55

60

Outdoor Temperature (oF)

TERI (oF)

60 70 80 90 100 110

120

140

160

180

Outdoor Temperature (oF)

PERO (psia)

60 70 80 90 100 110

6

8

10

12

Outdoor Temperature (oF)

∆PER (psid)

60 70 80 90 100 110

5

6

7

8

9

Outdoor Temperature (oF)

∆

Tsh

∆- T

sc (oF)

OD 82 oF DB - ID 70 oF DB/50 % RH

OD 82 oF DB - ID 80 oF DB/50 % RH

OD 100 oF DB - ID 70 oF DB/50 % RH

OD 100 oF DB - ID 80 oF DB/50 % RH

Figure C.2. Selected parameters from the no-fault tests. From the top left to right: TCRO,sat – condenser 

refrigerant exit saturation temperature, ∆PCR – condenser refrigerant pressure drop, PTXV,up – 

TXV upstream pressure, ∆PLL – liquid line pressure drop; TERI – evaporator refrigerant inlet 

temperature, PERO – evaporator refrigerant exit pressure, ∆PER – evaporator refrigerant 

pressure drop, ∆Tsh – ∆Tsc
80

C.2 Single-Fault Tests

0 2 4 6 8 10 12

2000

2100

2200

2300

Fault level (%)

SCFMCA (ft3/min)

0 2 4 6 8 10 12

0.49

0.5

0.51

0.52

0.53

Fault level (%)

φ EAI

0 2 4 6 8 10 12

45

50

55

60

Fault level (%)

TEAOD (oF)

0 2 4 6 8 10 12

0.86

0.87

0.88

0.89

0.9

Fault level (%)

φ EAO

0 2 4 6 8 10 12

1000

1010

1020

1030

1040

Fault level (%)

SCFMEA (ft3/min)

0 2 4 6 8 10 12

60

65

70

75

Fault level (%)

TSW (oF)

0 2 4 6 8 10 12

140

150

160

170

180

Fault level (%)

TCRI (oF)

0 2 4 6 8 10 12

300

350

400

450

Fault level (%)

PCRI (psia)

 

OD 82 oF DB - ID 70 oF DB/50 % RH

OD 82 oF DB - ID 80 oF DB/50 % RH

OD 100 oF DB - ID 70 oF DB/50 % RH

OD 100 oF DB - ID 80 oF DB/50 % RH

Figure C.3. Selected parameters with the compressor/reversing valve leakage fault. From the top left to 

right: SCFMCA – outdoor air flow rate, φEAI – indoor air inlet relative humidity, TEAOD – 

indoor air exit dew point temperature, φEAO – indoor air exit relative humidity, SCFMEA – 

indoor air flow rate, TSW – compressor suction wall temperature, TCRI – condenser 

refrigerant inlet temperature, PCRI – condenser refrigerant inlet pressure 
81

0 2 4 6 8 10 12

90

100

110

120

Fault level (%)

TCRO,sat (oF)

0 2 4 6 8 10 12

1.5

2

2.5

3

Fault level (%)

∆PCR (psid)

0 2 4 6 8 10 12

300

350

400

450

Fault level (%)

PTXV,up (psia)

0 2 4 6 8 10 12

8

10

12

14

16

Fault level (%)

∆PLL (psid)

0 2 4 6 8 10 12

45

50

55

60

Fault level (%)

TERI (oF)

0 2 4 6 8 10 12

130

140

150

160

170

Fault level (%)

PERO (psia)

0 2 4 6 8 10 12

6

8

10

12

Fault level (%)

∆PER (psid)

0 2 4 6 8 10 12

4

5

6

7

Fault level (%)

∆

Tsh

∆- T

sc (oF)

OD 82 oF DB - ID 70 oF DB/50 % RH

OD 82 oF DB - ID 80 oF DB/50 % RH

OD 100 oF DB - ID 70 oF DB/50 % RH

OD 100 oF DB - ID 80 oF DB/50 % RH

Figure C.4. Selected parameters with the compressor/reversing valve leakage fault. From the top left to 

right: TCRO,sat – condenser refrigerant exit saturation temperature, ∆PCR – condenser 

refrigerant pressure drop, PTXV,up – TXV upstream pressure, ∆PLL – liquid line pressure 

drop; TERI – evaporator refrigerant inlet temperature, PERO – evaporator refrigerant exit 

pressure, ∆PER – evaporator refrigerant pressure drop, ∆Tsh – ∆Tsc
82

0 10 20 30 40

1900

2000

2100

2200

2300

Fault level (%)

SCFMCA (ft3/min)

0 10 20 30 40

0.48

0.5

0.52

0.54

Fault level (%)

φ EAI

0 10 20 30 40

45

50

55

60

Fault level (%)

TEAOD (oF)

0 10 20 30 40

0.86

0.87

0.88

0.89

0.9

Fault level (%)

φ EAO

0 10 20 30 40

1000

1020

1040

1060

Fault level (%)

SCFMEA (ft3/min)

0 10 20 30 40

60

65

70

75

Fault level (%)

TSW (oF)

0 10 20 30 40

140

160

180

200

Fault level (%)

TCRI (oF)

0 10 20 30 40

300

350

400

450

500

Fault level (%)

PCRI (psia)

OD 82 oF DB - ID 70 oF DB/50 % RH

OD 82 oF DB - ID 80 oF DB/50 % RH

OD 100 oF DB - ID 70 oF DB/50 % RH

OD 100 oF DB - ID 80 oF DB/50 % RH

Figure C.5. Selected parameters with the improper outdoor flow rate fault. From the top left to right: 

SCFMCA – outdoor air flow rate, φEAI – indoor air inlet relative humidity, TEAOD – indoor air 

exit dew point temperature, φEAO – indoor air exit relative humidity, SCFMEA – indoor air 

flow rate, TSW – compressor suction wall temperature, TCRI – condenser refrigerant inlet 

temperature, PCRI – condenser refrigerant inlet pressure 
83

0 10 20 30 40

90

100

110

120

130

Fault level (%)

TCRO,sat (oF)

0 10 20 30 40

1.5

2

2.5

3

Fault level (%)

∆PCR (psid)

0 10 20 30 40

300

350

400

450

Fault level (%)

PTXV,up (psia)

0 10 20 30 40

10

12

14

16

18

Fault level (%)

∆PLL (psid)

0 10 20 30 40

45

50

55

60

Fault level (%)

TERI (oF)

0 10 20 30 40

130

140

150

160

170

Fault level (%)

PERO (psia)

0 10 20 30 40

9

10

11

12

13

Fault level (%)

∆PER (psid)

0 10 20 30 40

0

10

20

30

Fault level (%)

∆

Tsh

∆- Tsc (oF)

OD 82 oF DB - ID 70 oF DB/50 % RH

OD 82 oF DB - ID 80 oF DB/50 % RH

OD 100 oF DB - ID 70 oF DB/50 % RH

OD 100 oF DB - ID 80 oF DB/50 % RH

Figure C.6. Selected parameters with the improper outdoor flow rate fault. From the top left to right: 

TCRO,sat – condenser refrigerant exit saturation temperature, ∆PCR – condenser refrigerant 

pressure drop, PTXV,up – TXV upstream pressure, ∆PLL – liquid line pressure drop; TERI – 

evaporator refrigerant inlet temperature, PERO – evaporator refrigerant exit pressure, ∆PER – 

evaporator refrigerant pressure drop, ∆Tsh – ∆Tsc
84

0 10 20 30 40

2000

2100

2200

2300

Fault level (%)

SCFMCA (ft3/min)

0 10 20 30 40

0.49

0.5

0.51

0.52

0.53

Fault level (%)

φ EAI

0 10 20 30 40

40

45

50

55

60

Fault level (%)

TEAOD (oF)

0 10 20 30 40

0.86

0.87

0.88

0.89

0.9

Fault level (%)

φ EAO

0 10 20 30 40

600

800

1000

1200

Fault level (%)

SCFMEA (ft3/min)

0 10 20 30 40

55

60

65

70

75

Fault level (%)

TSW (oF)

0 10 20 30 40

140

150

160

170

180

Fault level (%)

TCRI (oF)

0 10 20 30 40

300

350

400

450

Fault level (%)

PCRI (psia)

OD 82 oF DB - ID 70 oF DB/50 % RH

OD 82 oF DB - ID 80 oF DB/50 % RH

OD 100 oF DB - ID 70 oF DB/50 % RH

OD 100 oF DB - ID 80 oF DB/50 % RH

Figure C.7. Selected parameters with the improper indoor flow rate fault. From the top left to right: 

SCFMCA – outdoor air flow rate, φEAI – indoor air inlet relative humidity, TEAOD – indoor air 

exit dew point temperature, φEAO – indoor air exit relative humidity, SCFMEA – indoor air 

flow rate, TSW – compressor suction wall temperature, TCRI – condenser refrigerant inlet 

temperature, PCRI – condenser refrigerant inlet pressure 
85

0 10 20 30 40

90

100

110

120

Fault level (%)

TCRO,sat (oF)

0 10 20 30 40

1.5

2

2.5

3

Fault level (%)

∆PCR (psid)

0 10 20 30 40

300

350

400

450

Fault level (%)

PTXV,up (psia)

0 10 20 30 40

8

10

12

14

16

Fault level (%)

∆PLL (psid)

0 10 20 30 40

40

45

50

55

60

Fault level (%)

TERI (oF)

0 10 20 30 40

130

140

150

160

170

Fault level (%)

PERO (psia)

0 10 20 30 40

8

9

10

11

12

Fault level (%)

∆PER (psid)

0 10 20 30 40

4.5

5

5.5

6

6.5

Fault level (%)

∆

Tsh

∆- Tsc (oF)

OD 82 oF DB - ID 70 oF DB/50 % RH

OD 82 oF DB - ID 80 oF DB/50 % RH

OD 100 oF DB - ID 70 oF DB/50 % RH

OD 100 oF DB - ID 80 oF DB/50 % RH

Figure C.8. Selected parameters with the improper indoor flow rate fault. From the top left to right: 

TCRO,sat – condenser refrigerant exit saturation temperature, ∆PCR – condenser refrigerant 

pressure drop, PTXV,up – TXV upstream pressure, ∆PLL – liquid line pressure drop; TERI – 

evaporator refrigerant inlet temperature, PERO – evaporator refrigerant exit pressure, ∆PER – 

evaporator refrigerant pressure drop, ∆Tsh – ∆Tsc
86

0 5 10 15 20 25

2000

2100

2200

2300

Fault level (%)

SCFMCA (ft3/min)

0 5 10 15 20 25

0.48

0.5

0.52

0.54

Fault level (%)

φ EAI

0 5 10 15 20 25

45

50

55

60

Fault level (%)

TEAOD (oF)

0 5 10 15 20 25

0.82

0.84

0.86

0.88

0.9

Fault level (%)

φ EAO

0 5 10 15 20 25

980

1000

1020

1040

Fault level (%)

SCFMEA (ft3/min)

0 5 10 15 20 25

60

65

70

75

80

Fault level (%)

TSW (oF)

0 5 10 15 20 25

140

160

180

200

Fault level (%)

TCRI (oF)

0 5 10 15 20 25

300

350

400

450

Fault level (%)

PCRI (psia)

OD 82 oF DB - ID 70 oF DB/50 % RH

OD 82 oF DB - ID 80 oF DB/50 % RH

OD 100 oF DB - ID 70 oF DB/50 % RH

OD 100 oF DB - ID 80 oF DB/50 % RH

Figure C.9. Selected parameters with the liquid line restriction fault. From the top left to right: SCFMCA

– outdoor air flow rate, φEAI – indoor air inlet relative humidity, TEAOD – indoor air exit dew 

point temperature, φEAO – indoor air exit relative humidity, SCFMEA – indoor air flow rate, 

TSW – compressor suction wall temperature, TCRI – condenser refrigerant inlet temperature, 

PCRI – condenser refrigerant inlet pressure 
87

0 5 10 15 20 25

90

100

110

120

Fault level (%)

TCRO,sat (oF)

0 5 10 15 20 25

1.5

2

2.5

3

Fault level (%)

∆PCR (psid)

0 5 10 15 20 25

250

300

350

400

450

Fault level (%)

PTXV,up (psia)

0 5 10 15 20 25

0

20

40

60

80

Fault level (%)

∆PLL (psid)

0 5 10 15 20 25

45

50

55

60

Fault level (%)

TERI (oF)

0 5 10 15 20 25

130

140

150

160

170

Fault level (%)

PERO (psia)

0 5 10 15 20 25

9

10

11

12

Fault level (%)

∆PER (psid)

0 5 10 15 20 25

5

10

15

Fault level (%)

∆

Tsh

∆- T

sc (oF)

OD 82 oF DB - ID 70 oF DB/50 % RH

OD 82 oF DB - ID 80 oF DB/50 % RH

OD 100 oF DB - ID 70 oF DB/50 % RH

OD 100 oF DB - ID 80 oF DB/50 % RH

Figure C.10. Selected parameters with the liquid line restriction fault. From the top left to right: TCRO,sat – 

condenser refrigerant exit saturation temperature, ∆PCR – condenser refrigerant pressure 

drop, PTXV,up – TXV upstream pressure, ∆PLL – liquid line pressure drop; TERI – evaporator 

refrigerant inlet temperature, PERO – evaporator refrigerant exit pressure, ∆PER – evaporator 

refrigerant pressure drop, ∆Tsh – ∆Tsc
88

-40 -20 0 20 40

500

1000

1500

2000

2500

Fault level (%)

SCFMCA (ft3/min)

-40 -20 0 20 40

0.48

0.5

0.52

0.54

Fault level (%)

φ EAI

-40 -20 0 20 40

45

50

55

60

Fault level (%)

TEAOD (oF)

-40 -20 0 20 40

0.82

0.84

0.86

0.88

0.9

Fault level (%)

φ EAO

-40 -20 0 20 40

980

1000

1020

1040

Fault level (%)

SCFMEA (ft3/min)

-40 -20 0 20 40

60

65

70

75

80

Fault level (%)

TSW (oF)

-40 -20 0 20 40

140

160

180

200

Fault level (%)

TCRI (oF)

-40 -20 0 20 40

300

350

400

450

500

Fault level (%)

PCRI (psia)

OD 82 oF DB - ID 70 oF DB/50 % RH

OD 82 oF DB - ID 80 oF DB/50 % RH

OD 100 oF DB - ID 70 oF DB/50 % RH

OD 100 oF DB - ID 80 oF DB/50 % RH

Figure C.11. Selected parameters with the refrigerant undercharge/overcharge fault. From the top left to 

right: SCFMCA – outdoor air flow rate, φEAI – indoor air inlet relative humidity, TEAOD – 

indoor air exit dew point temperature, φEAO – indoor air exit relative humidity, SCFMEA – 

indoor air flow rate, TSW – compressor suction wall temperature, TCRI – condenser 

refrigerant inlet temperature, PCRI – condenser refrigerant inlet pressure 
89

-40 -20 0 20 40

90

100

110

120

130

Fault level (%)

TCRO,sat (oF)

-40 -20 0 20 40

1.5

2

2.5

3

Fault level (%)

∆PCR (psid)

-40 -20 0 20 40

300

350

400

450

Fault level (%)

PTXV,up (psia)

-40 -20 0 20 40

10

12

14

16

Fault level (%)

∆PLL (psid)

-40 -20 0 20 40

40

45

50

55

60

Fault level (%)

TERI (oF)

-40 -20 0 20 40

120

140

160

180

Fault level (%)

PERO (psia)

-40 -20 0 20 40

8

10

12

14

Fault level (%)

∆PER (psid)

-40 -20 0 20 40

-10

0

10

20

30

Fault level (%)

∆

Tsh

∆- T

sc (oF)

OD 82 oF DB - ID 70 oF DB/50 % RH

OD 82 oF DB - ID 80 oF DB/50 % RH

OD 100 oF DB - ID 70 oF DB/50 % RH

OD 100 oF DB - ID 80 oF DB/50 % RH

Figure C.12. Selected parameters with the refrigerant undercharge/overcharge fault. From the top left to 

right: TCRO,sat – condenser refrigerant exit saturation temperature, ∆PCR – condenser 

refrigerant pressure drop, PTXV,up – TXV upstream pressure, ∆PLL – liquid line pressure 

drop; TERI – evaporator refrigerant inlet temperature, PERO – evaporator refrigerant exit 

pressure, ∆PER – evaporator refrigerant pressure drop, ∆Tsh – ∆Tsc
90

0 5 10 15 20

2000

2100

2200

2300

Fault level (%)

SCFMCA (ft3/min)

0 5 10 15 20

0.48

0.5

0.52

0.54

Fault level (%)

φ EAI

0 5 10 15 20

45

50

55

60

Fault level (%)

TEAOD (oF)

0 5 10 15 20

0.86

0.88

0.9

0.92

Fault level (%)

φ EAO

0 5 10 15 20

1000

1010

1020

1030

1040

Fault level (%)

SCFMEA (ft3/min)

0 5 10 15 20

60

65

70

75

Fault level (%)

TSW (oF)

0 5 10 15 20

140

160

180

200

Fault level (%)

TCRI (oF)

0 5 10 15 20

300

350

400

450

Fault level (%)

PCRI (psia)

OD 82 oF DB - ID 70 oF DB/50 % RH

OD 82 oF DB - ID 80 oF DB/50 % RH

OD 100 oF DB - ID 70 oF DB/50 % RH

OD 100 oF DB - ID 80 oF DB/50 % RH

Figure C.13. Selected parameters with the non-condensable gas fault. From the top left to right: SCFMCA

– outdoor air flow rate, φEAI – indoor air inlet relative humidity, TEAOD – indoor air exit dew 

point temperature, φEAO – indoor air exit relative humidity, SCFMEA – indoor air flow rate, 

TSW – compressor suction wall temperature, TCRI – condenser refrigerant inlet temperature, 

PCRI – condenser refrigerant inlet pressure 
91

0 5 10 15 20

90

100

110

120

130

Fault level (%)

TCRO,sat (oF)

0 5 10 15 20

1.5

2

2.5

3

3.5

Fault level (%)

∆PCR (psid)

0 5 10 15 20

300

350

400

450

Fault level (%)

PTXV,up (psia)

0 5 10 15 20

10

12

14

16

Fault level (%)

∆PLL (psid)

0 5 10 15 20

45

50

55

60

Fault level (%)

TERI (oF)

0 5 10 15 20

130

140

150

160

170

Fault level (%)

PERO (psia)

0 5 10 15 20

9

10

11

12

13

Fault level (%)

∆PER (psid)

0 5 10 15 20

-5

0

5

10

Fault level (%)

∆

Tsh

∆- T

sc (oF)

OD 82 oF DB - ID 70 oF DB/50 % RH

OD 82 oF DB - ID 80 oF DB/50 % RH

OD 100 oF DB - ID 70 oF DB/50 % RH

OD 100 oF DB - ID 80 oF DB/50 % RH

Figure C.14. Selected parameters with the non-condensable gas fault. From the top left to right: TCRO,sat – 

condenser refrigerant exit saturation temperature, ∆PCR – condenser refrigerant pressure 

drop, PTXV,up – TXV upstream pressure, ∆PLL – liquid line pressure drop; TERI – evaporator 

refrigerant inlet temperature, PERO – evaporator refrigerant exit pressure, ∆PER – evaporator 

refrigerant pressure drop, ∆Tsh – ∆Tsc
92

APPENDIX D. RAW EXPERIMENTAL DATA1

D.1 No-Fault Tests 

Table D.1. List of raw data for no-fault tests 

Test Nominal chamber condition 

condition # TID (°F) φID (%) TOD (°F) Fault Type Fault level 

(%) 

2 70 50 70 NF 0.0 

3 80 50 70 NF 0.0 

4 70 50 82 NF 0.0 

5 80 50 82 NF 0.0 

6 70 50 90 NF 0.0 

7 80 50 90 NF 0.0 

8 70 50 100 NF 0.0 

9 80 50 100 NF 0.0 

10 70 dry 70 NF 0.0 

11 80 dry 70 NF 0.0 

12 70 dry 82 NF 0.0 

13 80 dry 82 NF 0.0 

14 70 dry 90 NF 0.0 

15 80 dry 90 NF 0.0 

16 70 dry 100 NF 0.0 

17 80 dry 100 NF 0.0 

_____________________________________________________ 

1

 Data listed here was averaged from the repetition tests with the same nominal condition. 
93

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 02 

FAULT TYPE: NO-FAULT 

FAULT LEVEL [%]: 0

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 03 

FAULT TYPE: NO-FAULT 

FAULT LEVEL [%]: 0

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.69 

70.29 

50.27 

69.69 

70.29 

50.27 

49.88 

46.57 

0.490 

0.883 

20.41 

1043.6 

431.35 

69.69 

84.54 

14.86 

164.47 

4893.5 

23297.5 

28191.0 

0.826 

2063.0 

13.67 

3.41 

45.44 

55.54 

144.06 

136.44 

7.62 

13.96 

41.58 

29633.9 

129.56 

76.81 

281.62 

279.11 

2.51 

8.24 

88.41 

35639.9 

77.86 

273.34 

9.93 

263.42 

119.35 

0.62 

59.01 

133.51 

134.17 

282.75 

45.10 

99.75 

378.63 

1467.1 

57.28 

135.49

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.63 

80.12 

60.49 

69.96 

80.12 

60.49 

58.74 

55.71 

0.512 

0.896 

21.38 

1019.6 

419.70 

69.96 

87.16 

17.20 

163.05 

8542.0 

23978.2 

32520.3 

0.737 

2089.8 

15.56 

3.99 

53.51 

68.14 

164.06 

155.47 

8.60 

18.73 

49.41 

34307.5 

133.88 

77.85 

294.52 

291.65 

2.87 

10.15 

91.57 

40243.2 

78.81 

284.72 

12.81 

271.91 

107.85 

0.19 

69.92 

137.42 

152.95 

295.95 

45.78 

104.81 

427.24 

1507.0 

69.09 

154.24 
94

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 04 

FAULT TYPE: NO-FAULT 

FAULT LEVEL [%]: 0

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 05 

FAULT TYPE: NO-FAULT 

FAULT LEVEL [%]: 0

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.35 

69.87 

50.47 

81.73 

69.87 

50.47 

50.73 

47.15 

0.501 

0.875 

19.14 

1030.9 

425.01 

81.73 

96.67 

14.94 

159.78 

4455.9 

21596.0 

26051.8 

0.829 

2276.8 

11.44 

4.08 

46.30 

55.65 

147.59 

138.41 

9.18 

13.22 

42.43 

27602.0 

147.04 

89.79 

332.63 

330.42 

2.21 

7.89 

100.35 

34588.4 

90.44 

324.50 

10.47 

314.03 

166.44 

0.94 

60.53 

151.47 

136.16 

333.65 

51.16 

108.08 

377.89 

1692.0 

57.80 

137.45 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.42 

80.00 

60.38 

81.76 

80.00 

60.38 

59.45 

56.16 

0.512 

0.888 

20.55 

1011.9 

417.19 

81.76 

98.97 

17.21 

159.70 

7574.1 

22880.0 

30454.2 

0.751 

2334.6 

13.05 

4.30 

54.33 

65.66 

168.84 

158.78 

10.05 

14.96 

50.71 

32257.1 

147.23 

90.77 

344.71 

342.08 

2.64 

8.55 

102.97 

39257.0 

92.01 

334.55 

14.14 

320.41 

151.58 

0.63 

68.82 

150.92 

156.32 

345.92 

47.96 

109.48 

435.58 

1757.7 

67.15 

157.57 
95

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 06 

FAULT TYPE: NO-FAULT 

FAULT LEVEL [%]: 0

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 07 

FAULT TYPE: NO-FAULT 

FAULT LEVEL [%]: 0

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.68 

69.84 

50.29 

90.03 

69.84 

50.29 

50.92 

47.59 

0.498 

0.883 

18.93 

1041.5 

429.06 

90.03 

104.76 

14.73 

159.61 

3632.5 

21574.1 

25206.5 

0.856 

2516.9 

10.02 

1.90 

47.03 

55.89 

149.74 

140.11 

9.63 

12.73 

43.16 

26132.9 

159.88 

98.38 

370.75 

368.71 

2.04 

7.65 

108.38 

33921.2 

98.84 

362.52 

10.68 

351.85 

202.10 

1.28 

61.75 

164.74 

137.97 

371.68 

56.42 

115.57 

376.74 

1928.2 

58.41 

139.24 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.35 

79.97 

60.84 

89.95 

79.97 

60.84 

59.76 

56.86 

0.521 

0.901 

20.21 

1008.6 

416.91 

89.95 

107.28 

17.33 

157.98 

7266.5 

22444.3 

29710.8 

0.755 

2540.5 

11.70 

2.67 

55.27 

66.05 

173.22 

161.98 

11.24 

14.12 

51.93 

30955.0 

158.87 

99.28 

384.20 

381.75 

2.45 

8.29 

111.07 

38794.1 

100.53 

373.92 

14.63 

359.29 

186.07 

0.84 

69.92 

162.88 

159.47 

385.52 

51.80 

115.29 

440.16 

1965.6 

67.68 

160.73 
96

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 08 

FAULT TYPE: NO-FAULT 

FAULT LEVEL [%]: 0

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 09 

FAULT TYPE: NO-FAULT 

FAULT LEVEL [%]: 0

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.17 

69.96 

50.40 

99.92 

69.96 

50.40 

51.88 

48.28 

0.498 

0.875 

18.09 

1023.0 

421.35 

99.92 

114.81 

14.89 

155.77 

2884.0 

20253.5 

23137.5 

0.875 

2778.5 

8.33 

3.07 

48.03 

56.61 

152.98 

142.36 

10.62 

12.51 

44.10 

24305.6 

176.41 

109.39 

420.23 

418.32 

1.91 

6.84 

117.91 

33119.3 

109.44 

412.50 

11.18 

401.32 

248.34 

1.40 

63.55 

181.89 

140.18 

421.36 

64.00 

126.54 

375.25 

2201.3 

59.30 

141.41 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.44 

79.99 

60.58 

99.97 

79.99 

60.58 

60.77 

57.35 

0.516 

0.885 

19.22 

1010.7 

418.57 

99.97 

116.88 

16.91 

156.68 

5927.3 

21382.4 

27309.7 

0.783 

2825.1 

9.67 

2.86 

55.87 

66.41 

174.60 

162.94 

11.66 

14.12 

52.29 

28544.8 

174.98 

109.75 

433.61 

431.41 

2.21 

7.86 

120.33 

37455.2 

110.48 

423.64 

15.28 

408.36 

233.76 

1.00 

71.38 

179.35 

160.65 

434.60 

59.06 

125.47 

433.15 

2249.9 

68.44 

161.83 
97

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 10 

FAULT TYPE: NO-FAULT 

FAULT LEVEL [%]: 0

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 11 

FAULT TYPE: NO-FAULT 

FAULT LEVEL [%]: 0

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.85 

69.92 

32.01 

69.91 

69.92 

32.01 

46.40 

32.15 

0.245 

0.573 

23.52 

1066.7 

440.33 

69.91 

83.82 

13.91 

166.38 

0.0 

27277.5 

27167.6 

1.000 

2067.9 

13.14 

-0.20 

43.57 

51.39 

136.13 

128.45 

7.68 

13.35 

38.05 

27552.1 

129.87 

76.96 

277.97 

275.68 

2.29 

7.84 

87.49 

33602.5 

77.55 

270.63 

8.76 

261.87 

125.74 

0.59 

55.73 

134.22 

126.18 

278.91 

46.76 

99.65 

355.07 

1461.2 

53.48 

127.53 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.77 

80.28 

32.01 

69.77 

80.28 

32.01 

53.31 

32.10 

0.173 

0.442 

26.97 

1045.8 

434.65 

69.77 

85.22 

15.45 

164.81 

0.0 

30670.9 

30602.3 

1.000 

2074.2 

14.75 

0.91 

49.98 

59.86 

151.33 

143.19 

8.14 

15.41 

44.45 

31320.6 

130.53 

77.40 

285.19 

282.54 

2.65 

8.16 

89.29 

37331.2 

78.70 

276.34 

11.33 

265.02 

113.69 

0.24 

62.67 

134.21 

140.77 

285.79 

45.04 

101.14 

397.99 

1474.7 

61.43 

142.08 
98

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 12 

FAULT TYPE: NO-FAULT 

FAULT LEVEL [%]: 0

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 13 

FAULT TYPE: NO-FAULT 

FAULT LEVEL [%]: 0

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.68 

70.20 

32.01 

81.91 

70.20 

32.01 

47.51 

32.14 

0.242 

0.549 

22.70 

1055.1 

434.44 

81.91 

95.98 

14.07 

161.76 

0.0 

26038.7 

25939.0 

1.000 

2312.2 

11.22 

-1.51 

45.07 

52.55 

141.05 

132.29 

8.75 

12.78 

39.77 

25981.6 

147.58 

89.91 

329.20 

327.10 

2.10 

7.43 

99.59 

32989.5 

90.25 

321.64 

9.40 

312.24 

171.19 

0.99 

58.13 

152.42 

130.01 

330.06 

52.91 

108.50 

358.40 

1716.0 

55.02 

131.33 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

29.90 

80.23 

35.65 

81.83 

80.23 

35.65 

54.02 

36.13 

0.201 

0.506 

26.22 

1014.9 

424.00 

81.83 

97.67 

15.84 

159.79 

0.0 

28969.4 

28564.2 

1.000 

2325.4 

12.28 

0.27 

51.06 

59.66 

155.32 

145.94 

9.37 

14.07 

45.59 

29065.5 

147.97 

90.37 

338.02 

335.67 

2.35 

7.92 

101.53 

36092.7 

91.45 

329.15 

11.77 

317.39 

162.07 

0.62 

64.05 

151.99 

143.53 

338.56 

50.61 

109.54 

396.63 

1741.6 

61.80 

144.83 
99

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 14 

FAULT TYPE: NO-FAULT 

FAULT LEVEL [%]: 0

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 15 

FAULT TYPE: NO-FAULT 

FAULT LEVEL [%]: 0

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.54 

70.05 

32.01 

89.86 

70.05 

32.01 

48.07 

32.39 

0.244 

0.543 

21.97 

1050.2 

433.00 

89.86 

104.06 

14.20 

159.67 

0.0 

25094.2 

24803.3 

1.000 

2508.1 

9.89 

-1.61 

45.87 

53.32 

144.01 

134.57 

9.45 

12.56 

40.77 

24837.2 

160.26 

98.62 

366.24 

364.29 

1.95 

7.03 

107.47 

32599.7 

98.64 

358.56 

9.72 

348.84 

204.83 

1.28 

59.80 

165.53 

132.28 

367.01 

58.16 

116.03 

360.01 

1915.4 

56.08 

133.60 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

29.93 

79.94 

36.88 

90.09 

79.94 

36.88 

54.75 

37.43 

0.213 

0.519 

25.18 

1014.9 

423.29 

90.09 

105.95 

15.86 

157.67 

0.0 

27840.8 

27354.4 

1.000 

2529.5 

10.81 

0.16 

51.87 

60.19 

158.68 

148.44 

10.24 

13.58 

46.61 

27821.6 

160.34 

99.25 

376.95 

374.78 

2.17 

7.68 

109.63 

35658.4 

99.96 

368.14 

12.38 

355.76 

197.08 

0.85 

65.49 

164.71 

146.08 

377.53 

55.22 

116.03 

399.48 

1948.5 

62.60 

147.36 
100

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 16 

FAULT TYPE: NO-FAULT 

FAULT LEVEL [%]: 0

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 17 

FAULT TYPE: NO-FAULT 

FAULT LEVEL [%]: 0

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.39 

70.17 

32.27 

99.88 

70.17 

32.27 

49.57 

32.66 

0.245 

0.519 

20.59 

1042.4 

429.02 

99.88 

114.20 

14.32 

156.86 

0.0 

23345.2 

23042.1 

1.000 

2783.3 

8.28 

-1.78 

46.76 

54.51 

147.67 

137.21 

10.46 

12.60 

41.91 

23061.9 

177.67 

109.01 

416.69 

414.87 

1.82 

6.56 

117.25 

31823.0 

109.13 

409.36 

10.13 

399.23 

251.56 

1.45 

62.20 

183.41 

135.08 

417.63 

66.21 

127.71 

357.58 

2197.4 

57.55 

136.35 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.73 

80.12 

32.01 

99.89 

80.12 

32.01 

56.42 

32.14 

0.174 

0.396 

23.70 

1039.5 

429.64 

99.89 

115.61 

15.72 

158.04 

0.0 

26791.1 

26689.7 

1.000 

2810.2 

9.50 

-2.59 

53.56 

61.93 

164.61 

153.33 

11.28 

13.36 

48.57 

26435.9 

175.30 

109.51 

426.19 

424.12 

2.07 

7.09 

118.99 

35315.5 

110.07 

417.23 

13.33 

403.90 

239.29 

1.04 

67.94 

180.12 

151.01 

426.83 

61.23 

125.52 

405.02 

2222.5 

64.43 

152.24 
101

D.2 Compressor/Reversing Valve Leakage Fault Tests 

Table D.2. List of raw data for compressor/reversing valve leakage fault tests 

Test Nominal chamber condition 

condition # TID (°F) φID (%) TOD (°F) Fault Type Fault level 

(%) 

4 70 50 82 CMF 2.5 

4 70 50 82 CMF 5.0 

4 70 50 82 CMF 9.3 

4 70 50 82 CMF 11.4 

5 80 50 82 CMF 4.0 

5 80 50 82 CMF 6.7 

5 80 50 82 CMF 9.5 

5 80 50 82 CMF 27.2 

5 80 50 82 CMF 38.2 

8 70 50 100 CMF 2.5 

8 70 50 100 CMF 5.5 

8 70 50 100 CMF 9.0 

9 80 50 100 CMF 2.4 

9 80 50 100 CMF 5.6 

9 80 50 100 CMF 8.9 

9 80 50 100 CMF 11.5 
102

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 04 

FAULT TYPE: COMPRESSOR LEAKAGE FAULT 

FAULT LEVEL [%]: 2.5

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 04 

FAULT TYPE: COMPRESSOR LEAKAGE FAULT 

FAULT LEVEL [%]: 5.0

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.06 

70.11 

50.55 

82.21 

70.11 

50.55 

51.04 

47.61 

0.499 

0.880 

19.07 

1021.0 

424.13 

82.21 

96.90 

14.69 

159.22 

3974.5 

21311.4 

25285.9 

0.843 

2311.5 

10.94 

4.15 

46.49 

55.99 

148.48 

139.73 

8.75 

13.00 

42.99 

26822.0 

147.53 

90.36 

333.33 

331.19 

2.14 

7.83 

100.50 

33714.4 

90.72 

325.49 

10.00 

315.49 

167.01 

1.04 

60.98 

151.99 

137.50 

334.32 

51.54 

108.88 

368.34 

1728.2 

58.17 

138.76 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.04 

69.81 

50.54 

82.24 

69.81 

50.54 

51.06 

47.71 

0.504 

0.883 

18.75 

1021.6 

424.86 

82.24 

96.58 

14.34 

159.18 

3834.9 

20970.3 

24805.2 

0.845 

2301.4 

10.78 

3.40 

46.59 

56.01 

148.64 

140.43 

8.20 

12.72 

43.29 

26118.1 

147.48 

90.04 

331.59 

329.52 

2.08 

7.73 

100.12 

32933.3 

90.51 

324.08 

9.43 

314.65 

166.01 

0.96 

61.18 

152.09 

138.29 

332.50 

52.04 

109.16 

359.03 

1717.3 

58.22 

139.53 
103

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 04 

FAULT TYPE: COMPRESSOR LEAKAGE FAULT 

FAULT LEVEL [%]: 9.3

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 04 

FAULT TYPE: COMPRESSOR LEAKAGE FAULT 

FAULT LEVEL [%]: 11.4

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.01 

69.73 

50.51 

81.96 

69.73 

50.51 

51.37 

48.04 

0.504 

0.883 

18.36 

1019.1 

423.19 

81.96 

95.77 

13.81 

159.09 

3363.0 

20481.5 

23844.5 

0.859 

2270.0 

10.50 

2.73 

47.01 

56.47 

149.30 

142.02 

7.29 

12.52 

43.96 

24947.5 

147.23 

89.63 

327.05 

325.04 

2.01 

7.41 

99.12 

31591.7 

89.92 

320.09 

8.52 

311.57 

162.27 

0.94 

61.71 

152.12 

139.96 

328.00 

53.07 

109.42 

342.64 

1687.8 

58.59 

141.15 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.01 

69.68 

50.55 

81.96 

69.68 

50.55 

51.61 

48.28 

0.506 

0.884 

18.08 

1017.0 

424.75 

81.96 

95.47 

13.51 

159.66 

3100.6 

20131.2 

23231.8 

0.867 

2264.7 

10.26 

2.86 

47.23 

56.76 

149.71 

142.86 

6.85 

12.45 

44.31 

24354.0 

147.46 

89.49 

325.44 

323.50 

1.95 

7.20 

98.76 

30946.4 

89.83 

318.77 

8.11 

310.66 

160.96 

1.01 

62.04 

152.53 

140.88 

326.40 

53.83 

109.99 

334.82 

1680.3 

58.95 

142.03 
104

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 05 

FAULT TYPE: COMPRESSOR LEAKAGE FAULT 

FAULT LEVEL [%]: 4.0

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 05 

FAULT TYPE: COMPRESSOR LEAKAGE FAULT 

FAULT LEVEL [%]: 6.7

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.51 

80.25 

60.23 

81.87 

80.25 

60.23 

59.64 

56.61 

0.505 

0.897 

20.62 

1014.1 

417.80 

81.87 

98.57 

16.70 

160.27 

6523.4 

23010.5 

29533.9 

0.779 

2317.8 

12.74 

3.22 

55.33 

66.33 

170.03 

161.25 

8.77 

14.68 

51.65 

30947.0 

146.73 

90.53 

342.11 

339.60 

2.51 

8.41 

102.41 

37731.5 

91.73 

332.65 

13.09 

319.56 

149.53 

0.71 

69.50 

150.51 

158.95 

343.21 

48.13 

110.12 

418.09 

1739.7 

67.78 

160.12 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.56 

80.23 

60.32 

81.90 

80.23 

60.32 

59.92 

56.90 

0.507 

0.897 

20.31 

1014.9 

417.63 

81.90 

98.18 

16.28 

160.59 

6196.6 

22681.1 

28877.7 

0.785 

2305.7 

12.53 

2.57 

55.69 

66.60 

170.84 

162.70 

8.14 

14.40 

52.20 

30066.9 

146.52 

90.41 

339.60 

337.19 

2.41 

8.20 

101.87 

36764.9 

91.49 

330.61 

12.30 

318.32 

147.47 

0.66 

69.81 

150.49 

160.46 

340.72 

48.65 

110.53 

406.38 

1727.5 

67.99 

161.61 
105

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 05 

FAULT TYPE: COMPRESSOR LEAKAGE FAULT 

FAULT LEVEL [%]: 9.5

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 05 

FAULT TYPE: COMPRESSOR LEAKAGE FAULT 

FAULT LEVEL [%]: 27.2

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.57 

80.31 

60.29 

81.63 

80.31 

60.29 

60.39 

57.25 

0.505 

0.893 

19.92 

1014.4 

415.14 

81.63 

97.42 

15.79 

160.61 

5537.7 

22237.8 

27775.5 

0.801 

2278.7 

12.19 

3.48 

56.30 

66.93 

171.40 

163.90 

7.50 

14.27 

52.66 

29207.2 

146.14 

90.28 

335.44 

333.09 

2.35 

7.77 

100.97 

35796.2 

91.11 

326.94 

11.46 

315.49 

144.09 

0.94 

70.23 

150.25 

161.76 

336.43 

49.34 

111.03 

394.41 

1703.0 

68.59 

162.84 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.52 

79.63 

60.68 

81.98 

79.63 

60.68 

62.24 

58.94 

0.524 

0.890 

17.39 

1009.6 

418.90 

81.98 

95.05 

13.07 

161.79 

3257.0 

19341.7 

22598.7 

0.856 

2211.3 

10.22 

1.92 

57.25 

69.39 

175.27 

170.87 

4.40 

14.15 

55.25 

23467.4 

149.17 

89.07 

322.20 

320.37 

1.83 

7.09 

98.03 

29623.7 

89.42 

316.46 

7.17 

309.30 

134.03 

0.68 

73.16 

154.77 

169.29 

322.49 

56.95 

119.89 

317.20 

1630.6 

70.85 

170.12 
106

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 05 

FAULT TYPE: COMPRESSOR LEAKAGE FAULT 

FAULT LEVEL [%]: 38.2

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 08 

FAULT TYPE: COMPRESSOR LEAKAGE FAULT 

FAULT LEVEL [%]: 2.5

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.50 

79.64 

60.71 

81.91 

79.64 

60.71 

63.33 

59.95 

0.524 

0.887 

16.31 

1009.5 

415.92 

81.91 

93.29 

11.38 

161.36 

1440.9 

18141.8 

19582.7 

0.926 

2158.8 

9.07 

-0.91 

58.73 

70.94 

178.26 

175.34 

2.92 

14.08 

56.86 

19818.2 

151.28 

88.62 

312.47 

310.88 

1.60 

5.93 

95.81 

25618.4 

88.66 

308.12 

5.07 

303.05 

124.79 

0.72 

75.10 

158.40 

173.94 

312.13 

62.95 

126.79 

269.23 

1581.6 

72.39 

174.71 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.06 

70.06 

50.64 

100.11 

70.06 

50.64 

52.44 

48.81 

0.501 

0.874 

17.62 

1019.5 

420.29 

100.11 

114.70 

14.59 

155.39 

2518.0 

19669.1 

22187.2 

0.887 

2774.9 

8.00 

4.36 

48.76 

56.91 

153.67 

143.74 

9.93 

12.23 

44.68 

23638.9 

176.36 

109.66 

419.23 

417.37 

1.86 

6.65 

117.72 

32289.6 

109.54 

411.99 

10.62 

401.37 

247.70 

1.42 

63.97 

181.86 

141.66 

420.41 

64.15 

126.60 

365.90 

2199.2 

59.64 

142.84 
107

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 08 

FAULT TYPE: COMPRESSOR LEAKAGE FAULT 

FAULT LEVEL [%]: 5.5

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 08 

FAULT TYPE: COMPRESSOR LEAKAGE FAULT 

FAULT LEVEL [%]: 9.0

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.04 

70.00 

50.71 

100.09 

70.00 

50.71 

52.69 

49.03 

0.503 

0.873 

17.31 

1016.1 

419.31 

100.09 

114.30 

14.21 

155.37 

2312.2 

19256.9 

21569.1 

0.893 

2754.8 

7.83 

4.03 

48.96 

57.20 

153.95 

144.79 

9.16 

12.09 

45.12 

22912.2 

176.61 

109.44 

416.38 

414.57 

1.81 

6.46 

117.20 

31433.4 

109.25 

409.47 

9.82 

399.65 

245.70 

1.44 

64.40 

182.35 

142.78 

417.52 

65.17 

126.88 

354.63 

2180.1 

59.97 

143.93 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.00 

70.01 

50.70 

100.05 

70.01 

50.70 

53.01 

49.33 

0.503 

0.873 

17.00 

1012.5 

418.53 

100.05 

113.89 

13.84 

155.18 

1890.4 

18854.3 

20744.7 

0.909 

2736.8 

7.58 

4.08 

49.15 

57.56 

154.36 

145.89 

8.47 

11.99 

45.57 

22062.8 

177.26 

109.20 

413.38 

411.64 

1.74 

6.28 

116.64 

30453.1 

108.96 

406.94 

9.08 

397.85 

243.49 

1.45 

64.95 

183.27 

143.98 

414.54 

66.64 

127.28 

341.54 

2163.1 

60.37 

145.09 
108

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 09 

FAULT TYPE: COMPRESSOR LEAKAGE FAULT 

FAULT LEVEL [%]: 2.4

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 09 

FAULT TYPE: COMPRESSOR LEAKAGE FAULT 

FAULT LEVEL [%]: 5.6

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.40 

80.28 

60.42 

99.69 

80.28 

60.42 

60.83 

57.55 

0.508 

0.889 

19.45 

1008.0 

415.56 

99.69 

116.28 

16.59 

156.61 

5257.4 

21582.8 

26840.2 

0.804 

2789.3 

9.62 

2.51 

56.74 

67.23 

175.17 

164.32 

10.86 

14.42 

52.81 

27958.2 

174.44 

109.21 

429.77 

427.61 

2.16 

7.96 

119.64 

36622.6 

109.72 

420.07 

14.34 

405.74 

230.57 

0.94 

72.10 

178.88 

162.13 

430.57 

59.32 

125.73 

421.72 

2217.1 

69.18 

163.25 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.97 

80.12 

60.58 

100.08 

80.12 

60.58 

61.48 

57.98 

0.514 

0.883 

18.64 

1028.4 

421.13 

100.08 

115.98 

15.90 

158.06 

4811.8 

21101.8 

25913.6 

0.814 

2784.8 

9.31 

2.41 

56.25 

67.12 

174.75 

164.83 

9.92 

14.11 

53.01 

26983.9 

174.95 

109.12 

427.98 

425.89 

2.09 

8.00 

119.32 

35586.3 

109.47 

418.89 

13.28 

405.61 

230.86 

1.02 

72.36 

179.68 

162.80 

428.84 

60.43 

126.68 

407.75 

2205.6 

69.21 

163.91 
109

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 09 

FAULT TYPE: COMPRESSOR LEAKAGE FAULT 

FAULT LEVEL [%]: 8.9

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 09 

FAULT TYPE: COMPRESSOR LEAKAGE FAULT 

FAULT LEVEL [%]: 11.5

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.36 

80.23 

60.52 

99.72 

80.23 

60.52 

61.53 

58.18 

0.511 

0.887 

18.70 

1007.7 

419.75 

99.72 

115.44 

15.72 

156.92 

4343.6 

20748.3 

25091.9 

0.827 

2762.3 

9.08 

2.14 

57.41 

67.99 

176.32 

167.08 

9.24 

14.14 

53.85 

26068.9 

174.93 

108.83 

423.54 

421.54 

2.01 

7.58 

118.51 

34489.3 

109.17 

415.00 

12.33 

402.67 

226.35 

0.97 

73.11 

179.88 

165.12 

424.27 

61.46 

126.82 

393.46 

2185.6 

69.99 

166.19 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.34 

80.18 

60.72 

99.78 

80.18 

60.72 

61.83 

58.52 

0.515 

0.889 

18.34 

1004.4 

416.67 

99.78 

115.27 

15.49 

155.89 

4108.6 

20294.6 

24403.2 

0.832 

2742.9 

8.90 

1.93 

57.74 

68.25 

177.06 

168.45 

8.61 

13.90 

54.35 

25309.0 

175.37 

108.80 

421.76 

419.81 

1.95 

7.54 

118.19 

33623.5 

108.95 

413.58 

11.61 

401.97 

224.91 

0.95 

73.55 

180.44 

166.54 

422.49 

62.35 

127.50 

382.09 

2170.4 

70.32 

167.55 
110

D.3 Improper Outdoor Air Flow Fault Tests 

Table D.3. List of raw data for improper outdoor air flow fault tests 

Test Nominal chamber condition 

condition # TID (°F) φID (%) TOD (°F) Fault Type Fault level 

(%) 

4 70 50 82 CF 10.0 

4 70 50 82 CF 20.0 

4 70 50 82 CF 35.0 

5 80 50 82 CF 5.0 

5 80 50 82 CF 10.0 

5 80 50 82 CF 20.0 

5 80 50 82 CF 35.0 

5 80 50 82 CF 50.0 

8 70 50 100 CF 10.0 

8 70 50 100 CF 20.0 

8 70 50 100 CF 35.0 

9 80 50 100 CF 5.0 

9 80 50 100 CF 10.0 

9 80 50 100 CF 20.0 

9 80 50 100 CF 35.0 
111

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 04 

FAULT TYPE: IMPROPER OUTDOOR AIR FLOW FAULT 

FAULT LEVEL [%]: 10.0

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 04 

FAULT TYPE: IMPROPER OUTDOOR AIR FLOW FAULT 

FAULT LEVEL [%]: 20.0

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.55 

70.03 

50.10 

81.54 

70.03 

50.10 

50.62 

47.11 

0.492 

0.877 

19.41 

1038.1 

425.46 

81.54 

96.54 

15.00 

160.54 

3977.8 

22044.2 

26021.9 

0.847 

2315.7 

11.24 

3.74 

46.10 

55.47 

147.16 

138.00 

9.16 

13.22 

42.25 

27475.1 

147.53 

88.83 

333.00 

330.81 

2.19 

7.61 

100.43 

34507.4 

90.80 

324.87 

10.38 

314.49 

167.33 

0.99 

60.26 

151.99 

135.72 

333.92 

51.63 

108.47 

377.09 

1729.7 

57.74 

137.05 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.67 

69.93 

50.18 

81.80 

69.93 

50.18 

50.92 

47.46 

0.495 

0.879 

19.00 

1040.8 

426.70 

81.80 

96.70 

14.90 

161.87 

3635.3 

21640.5 

25275.8 

0.856 

2341.5 

10.80 

3.17 

46.96 

56.09 

149.05 

139.10 

9.96 

13.36 

42.72 

26544.2 

149.24 

88.18 

338.26 

336.04 

2.22 

1.89 

101.58 

33680.8 

97.36 

328.62 

10.72 

317.90 

168.85 

1.33 

60.75 

153.82 

136.87 

339.27 

52.30 

108.96 

378.71 

1752.9 

58.16 

138.15 
112

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 04 

FAULT TYPE: IMPROPER OUTDOOR AIR FLOW FAULT 

FAULT LEVEL [%]: 35.0

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 05 

FAULT TYPE: IMPROPER OUTDOOR AIR FLOW FAULT 

FAULT LEVEL [%]: 5.0

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.54 

70.03 

50.12 

81.65 

70.03 

50.12 

51.13 

47.67 

0.492 

0.879 

18.90 

1037.0 

426.11 

81.65 

96.92 

15.26 

163.51 

3288.1 

21452.6 

24740.6 

0.867 

2429.5 

10.18 

3.92 

46.87 

58.39 

149.87 

139.56 

10.31 

15.48 

42.92 

26193.3 

156.08 

86.72 

353.75 

351.66 

2.10 

0.77 

104.88 

33592.7 

101.67 

343.23 

12.19 

331.04 

181.17 

2.41 

62.92 

160.43 

137.32 

354.58 

55.63 

112.22 

380.75 

1839.9 

60.47 

138.64 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.40 

80.26 

60.41 

81.81 

80.26 

60.41 

59.38 

56.25 

0.508 

0.894 

20.88 

1011.5 

417.37 

81.81 

99.19 

17.38 

160.21 

7482.2 

23237.6 

30719.7 

0.756 

2344.1 

13.11 

3.62 

54.31 

65.84 

168.99 

159.22 

9.77 

14.97 

50.87 

32305.8 

147.77 

90.45 

346.28 

343.65 

2.63 

9.17 

103.31 

39337.9 

91.73 

336.12 

14.10 

322.02 

153.04 

0.63 

68.97 

151.50 

156.77 

347.56 

48.19 

109.72 

435.43 

1766.5 

67.35 

158.00 
113

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 05 

FAULT TYPE: IMPROPER OUTDOOR AIR FLOW FAULT 

FAULT LEVEL [%]: 10.0

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 05 

FAULT TYPE: IMPROPER OUTDOOR AIR FLOW FAULT 

FAULT LEVEL [%]: 20.0

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.39 

79.93 

60.32 

81.75 

79.93 

60.32 

59.44 

56.24 

0.512 

0.891 

20.50 

1011.9 

416.29 

81.75 

99.05 

17.30 

160.54 

7329.2 

22824.4 

30153.6 

0.757 

2348.5 

12.84 

4.26 

54.16 

65.20 

168.49 

158.50 

9.99 

14.60 

50.60 

31928.9 

148.06 

89.79 

347.04 

344.49 

2.55 

8.54 

103.47 

38983.0 

92.54 

336.94 

14.20 

322.74 

154.25 

0.57 

68.44 

151.65 

156.04 

348.36 

48.17 

109.80 

433.13 

1771.7 

66.81 

157.33 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.40 

80.17 

60.39 

81.83 

80.17 

60.39 

59.77 

56.60 

0.510 

0.892 

20.40 

1011.5 

418.75 

81.83 

98.86 

17.03 

161.94 

6860.1 

22712.7 

29572.8 

0.768 

2378.4 

12.43 

2.82 

54.38 

68.47 

169.75 

159.09 

10.66 

17.65 

50.82 

30860.6 

152.15 

88.98 

351.90 

349.23 

2.67 

3.01 

104.50 

37936.6 

98.78 

340.19 

14.08 

326.11 

156.36 

0.98 

71.30 

155.72 

156.67 

353.17 

51.22 

112.79 

429.95 

1797.8 

69.82 

157.90 
114

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 05 

FAULT TYPE: IMPROPER OUTDOOR AIR FLOW FAULT 

FAULT LEVEL [%]: 35.0

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 05 

FAULT TYPE: IMPROPER OUTDOOR AIR FLOW FAULT 

FAULT LEVEL [%]: 50.0

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.41 

80.13 

60.53 

82.02 

80.13 

60.53 

60.59 

57.29 

0.513 

0.889 

19.54 

1011.7 

417.92 

82.02 

98.60 

16.59 

164.00 

5944.8 

21764.7 

27709.5 

0.785 

2486.8 

11.14 

0.65 

52.59 

70.74 

163.91 

153.57 

10.34 

22.08 

48.67 

28312.7 

163.41 

87.54 

368.94 

366.73 

2.22 

0.79 

108.02 

35699.8 

104.74 

357.85 

12.98 

344.87 

180.96 

2.41 

74.01 

167.25 

151.29 

370.18 

59.23 

120.64 

404.94 

1904.9 

72.15 

152.51 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.39 

80.20 

60.73 

81.72 

80.20 

60.73 

61.85 

58.38 

0.515 

0.884 

18.34 

1009.3 

415.13 

81.72 

97.69 

15.97 

167.54 

4388.1 

20391.5 

24779.6 

0.823 

2913.1 

8.51 

-0.04 

54.38 

71.20 

168.74 

156.85 

11.90 

21.24 

49.95 

25184.2 

185.07 

87.89 

442.19 

440.16 

2.03 

0.45 

121.85 

33639.6 

118.97 

429.57 

16.32 

413.25 

244.51 

2.43 

75.24 

187.52 

154.62 

443.45 

65.66 

133.68 

398.55 

2330.4 

72.55 

155.80 
115

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 08 

FAULT TYPE: IMPROPER OUTDOOR AIR FLOW FAULT 

FAULT LEVEL [%]: 10.0

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 08 

FAULT TYPE: IMPROPER OUTDOOR AIR FLOW FAULT 

FAULT LEVEL [%]: 20.0

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

29.94 

70.06 

50.55 

99.96 

70.06 

50.55 

52.05 

48.48 

0.499 

0.876 

18.02 

1012.8 

419.71 

99.96 

115.12 

15.17 

156.18 

2824.2 

19979.9 

22804.1 

0.876 

2795.8 

8.16 

4.25 

48.15 

56.76 

153.37 

142.68 

10.69 

12.52 

44.24 

24254.4 

177.31 

108.67 

422.44 

420.53 

1.91 

6.38 

118.31 

33127.9 

110.31 

414.67 

11.28 

403.39 

250.03 

1.43 

63.60 

182.60 

140.51 

423.63 

64.29 

126.93 

376.55 

2219.9 

59.46 

141.75 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

29.91 

69.93 

50.50 

100.00 

69.93 

50.50 

52.32 

48.74 

0.501 

0.876 

17.62 

1011.8 

419.29 

100.00 

115.09 

15.09 

156.90 

2412.2 

19517.2 

21929.4 

0.890 

2820.6 

7.78 

4.16 

48.44 

57.47 

154.58 

143.42 

11.16 

12.93 

44.55 

23318.3 

178.98 

107.74 

426.68 

424.71 

1.97 

1.30 

119.08 

32311.8 

115.96 

417.78 

11.56 

406.23 

251.64 

1.67 

64.02 

184.58 

141.23 

427.91 

65.50 

127.96 

377.31 

2244.4 

60.18 

142.43 
116

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 08 

FAULT TYPE: IMPROPER OUTDOOR AIR FLOW FAULT 

FAULT LEVEL [%]: 35.0

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 09 

FAULT TYPE: IMPROPER OUTDOOR AIR FLOW FAULT 

FAULT LEVEL [%]: 5.0

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

29.89 

70.00 

50.53 

99.97 

70.00 

50.53 

52.65 

49.06 

0.500 

0.875 

17.34 

1009.6 

418.54 

99.97 

115.28 

15.31 

158.53 

2023.7 

19176.8 

21200.5 

0.905 

2945.7 

7.20 

3.97 

48.79 

58.97 

156.44 

144.36 

12.07 

14.03 

44.94 

22511.8 

186.29 

105.82 

446.34 

444.48 

1.86 

0.40 

122.58 

31800.7 

120.25 

436.51 

13.33 

423.17 

266.74 

1.97 

65.59 

191.44 

142.22 

447.57 

68.85 

132.32 

375.07 

2368.6 

61.62 

143.44 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.26 

79.99 

60.71 

99.78 

79.99 

60.71 

60.77 

57.40 

0.518 

0.886 

19.23 

1005.1 

417.67 

99.78 

116.85 

17.07 

156.47 

6089.6 

21275.7 

27365.3 

0.777 

2828.5 

9.68 

2.65 

55.52 

65.92 

174.23 

162.75 

11.48 

13.70 

52.22 

28538.3 

174.88 

109.21 

434.24 

432.08 

2.16 

8.81 

120.44 

37465.2 

109.66 

424.35 

15.16 

409.20 

234.97 

0.90 

70.94 

179.44 

160.45 

435.45 

59.00 

125.32 

431.32 

2254.3 

68.06 

161.60 
117

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 09 

FAULT TYPE: IMPROPER OUTDOOR AIR FLOW FAULT 

FAULT LEVEL [%]: 10.0

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 09 

FAULT TYPE: IMPROPER OUTDOOR AIR FLOW FAULT 

FAULT LEVEL [%]: 20.0

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.25 

79.95 

60.81 

99.72 

79.95 

60.81 

60.82 

57.51 

0.521 

0.888 

19.13 

1003.6 

416.60 

99.72 

116.89 

17.17 

156.59 

6082.3 

21139.2 

27221.5 

0.777 

2836.8 

9.60 

2.78 

55.57 

66.15 

174.75 

163.13 

11.63 

13.79 

52.37 

28427.6 

175.51 

108.63 

435.43 

433.27 

2.16 

7.95 

120.66 

37389.9 

110.72 

425.47 

15.30 

410.17 

235.41 

1.02 

71.11 

179.86 

160.76 

436.61 

59.21 

125.75 

432.56 

2263.6 

68.29 

161.95 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.48 

80.19 

60.24 

100.15 

80.19 

60.24 

60.90 

57.63 

0.507 

0.890 

19.28 

1012.3 

417.42 

100.15 

117.00 

16.85 

158.47 

4786.5 

21487.1 

26273.5 

0.818 

2877.6 

9.13 

1.58 

56.48 

66.67 

176.46 

164.16 

12.30 

13.91 

52.76 

27120.4 

177.68 

108.27 

442.08 

439.81 

2.27 

2.32 

121.83 

36262.1 

117.30 

430.69 

15.93 

414.76 

238.30 

1.45 

71.45 

182.24 

161.82 

443.26 

60.42 

127.19 

433.37 

2301.7 

68.75 

163.01 
118

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 09 

FAULT TYPE: IMPROPER OUTDOOR AIR FLOW FAULT 

FAULT LEVEL [%]: 35.0

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.52 

80.06 

60.16 

100.16 

80.06 

60.16 

61.30 

57.90 

0.507 

0.886 

18.76 

1013.4 

420.60 

100.16 

117.03 

16.86 

161.21 

4159.9 

20929.6 

25089.5 

0.834 

3009.9 

8.34 

2.39 

56.51 

68.77 

177.64 

164.76 

12.88 

15.79 

52.98 

26135.6 

185.98 

106.43 

463.29 

461.18 

2.11 

0.16 

125.51 

35700.8 

123.06 

451.02 

17.37 

433.65 

256.01 

2.66 

73.61 

189.94 

162.48 

464.46 

64.44 

132.84 

434.07 

2428.0 

70.82 

163.67 
119

D.4 Improper Indoor Air Flow Fault Tests 

Table D.4. List of raw data for improper indoor air flow fault tests 

Test Nominal chamber condition 

condition # TID (°F) φID (%) TOD (°F) Fault Type Fault level 

(%) 

4 70 50 82 EF 13.0 

4 70 50 82 EF 22.5 

4 70 50 82 EF 31.4 

5 80 50 82 EF 5.9 

5 80 50 82 EF 11.0 

5 80 50 82 EF 20.7 

5 80 50 82 EF 30.8 

8 70 50 100 EF 11.8 

8 70 50 100 EF 21.1 

8 70 50 100 EF 33.1 

9 80 50 100 EF 5.7 

9 80 50 100 EF 10.6 

9 80 50 100 EF 20.9 

9 80 50 100 EF 30.5 

12 70 dry 82 EF 14.3 

12 70 dry 82 EF 24.1 

12 70 dry 82 EF 34.6 

13 80 dry 82 EF 6.1 

13 80 dry 82 EF 11.0 

13 80 dry 82 EF 21.1 

13 80 dry 82 EF 30.9 
120

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 04 

FAULT TYPE: IMPROPER INDOOR AIR FLOW FAULT 

FAULT LEVEL [%]: 13.0

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 04 

FAULT TYPE: IMPROPER INDOOR AIR FLOW FAULT 

FAULT LEVEL [%]: 22.5

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.66 

70.10 

50.32 

81.48 

70.10 

50.32 

49.21 

45.81 

0.494 

0.880 

20.89 

896.8 

397.43 

81.48 

96.03 

14.55 

160.92 

5062.2 

20497.6 

25559.7 

0.802 

2272.0 

11.25 

4.10 

45.28 

54.28 

144.63 

135.93 

8.70 

12.92 

41.36 

27066.9 

146.75 

89.16 

329.92 

327.75 

2.17 

7.97 

99.75 

33922.2 

89.79 

321.99 

9.89 

312.10 

167.47 

0.92 

59.44 

151.29 

133.70 

331.02 

51.57 

108.02 

369.19 

1713.6 

56.47 

135.07 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.66 

69.88 

50.36 

81.51 

69.88 

50.36 

47.94 

44.60 

0.499 

0.881 

21.94 

798.5 

379.53 

81.51 

95.83 

14.32 

161.02 

5654.4 

19161.0 

24815.4 

0.772 

2252.2 

11.02 

5.39 

44.19 

53.03 

142.16 

133.63 

8.54 

12.68 

40.36 

26629.7 

146.89 

89.15 

328.79 

326.68 

2.11 

7.84 

99.50 

33438.1 

89.73 

321.11 

9.51 

311.60 

169.44 

1.05 

58.45 

151.58 

131.42 

329.90 

52.10 

108.11 

363.28 

1711.6 

55.41 

132.74 
121

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 04 

FAULT TYPE: IMPROPER INDOOR AIR FLOW FAULT 

FAULT LEVEL [%]: 31.4

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 05 

FAULT TYPE: IMPROPER INDOOR AIR FLOW FAULT 

FAULT LEVEL [%]: 5.9

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.67 

69.88 

50.36 

81.53 

69.88 

50.36 

46.57 

43.28 

0.499 

0.882 

23.31 

706.7 

366.17 

81.53 

95.61 

14.08 

161.69 

6020.6 

18009.3 

24029.9 

0.749 

2235.3 

10.75 

6.41 

43.09 

51.85 

139.58 

131.19 

8.39 

12.57 

39.27 

26067.7 

147.15 

89.05 

327.38 

325.31 

2.07 

7.68 

99.19 

32821.7 

89.62 

319.92 

9.05 

310.87 

171.29 

1.02 

57.50 

151.99 

128.97 

328.45 

52.83 

108.28 

355.70 

1707.4 

54.24 

130.31 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.45 

79.78 

60.42 

81.82 

79.78 

60.42 

58.63 

55.51 

0.517 

0.894 

21.15 

951.7 

402.79 

81.82 

99.00 

17.18 

159.33 

8202.1 

22147.6 

30349.7 

0.730 

2322.4 

13.07 

3.84 

53.90 

64.95 

167.80 

158.04 

9.76 

14.53 

50.42 

31980.4 

147.18 

90.77 

344.89 

342.27 

2.63 

8.60 

103.01 

38943.4 

92.01 

334.82 

13.92 

320.91 

153.11 

0.71 

68.23 

150.93 

155.60 

346.12 

47.92 

109.27 

432.14 

1760.3 

66.51 

156.83 
122

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 05 

FAULT TYPE: IMPROPER INDOOR AIR FLOW FAULT 

FAULT LEVEL [%]: 11.0

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 05 

FAULT TYPE: IMPROPER INDOOR AIR FLOW FAULT 

FAULT LEVEL [%]: 20.7

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.42 

79.91 

60.69 

81.78 

79.91 

60.69 

58.25 

55.16 

0.519 

0.894 

21.66 

900.4 

394.21 

81.78 

98.91 

17.13 

160.03 

8742.4 

21458.4 

30200.9 

0.711 

2314.4 

13.05 

3.92 

54.04 

64.97 

167.06 

157.39 

9.68 

14.81 

50.16 

31843.8 

147.51 

90.62 

344.52 

341.93 

2.59 

8.65 

102.93 

38768.9 

91.90 

334.52 

13.77 

320.76 

153.69 

0.74 

68.26 

151.26 

154.90 

345.78 

48.33 

109.50 

429.42 

1760.2 

66.47 

156.20 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.42 

80.13 

60.75 

81.78 

80.13 

60.75 

57.22 

54.12 

0.517 

0.894 

22.92 

802.7 

378.75 

81.78 

98.63 

16.85 

161.04 

9197.4 

20231.3 

29428.7 

0.687 

2295.9 

12.82 

5.17 

53.17 

63.91 

164.80 

155.25 

9.55 

14.57 

49.33 

31430.9 

147.36 

90.47 

342.91 

340.39 

2.52 

8.63 

102.58 

38310.3 

91.65 

333.28 

13.40 

319.89 

155.09 

0.68 

67.36 

151.24 

152.78 

344.17 

48.66 

109.29 

423.49 

1756.1 

65.39 

154.07 
123

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 05 

FAULT TYPE: IMPROPER INDOOR AIR FLOW FAULT 

FAULT LEVEL [%]: 30.8

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 08 

FAULT TYPE: IMPROPER INDOOR AIR FLOW FAULT 

FAULT LEVEL [%]: 11.8

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.42 

80.10 

60.35 

81.85 

80.10 

60.35 

55.52 

52.38 

0.510 

0.892 

24.59 

700.3 

362.56 

81.85 

98.34 

16.49 

161.65 

9318.7 

18927.9 

28246.6 

0.670 

2276.7 

12.41 

6.42 

51.59 

62.07 

161.18 

151.80 

9.39 

14.11 

47.96 

30573.2 

147.33 

90.46 

341.23 

338.77 

2.47 

8.44 

102.22 

37392.4 

91.54 

331.94 

12.71 

319.23 

158.05 

0.68 

65.87 

151.33 

149.30 

342.45 

49.11 

108.99 

412.66 

1752.5 

63.67 

150.63 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

29.90 

70.16 

50.57 

99.98 

70.16 

50.57 

50.93 

47.41 

0.498 

0.877 

19.23 

899.5 

396.40 

99.98 

114.81 

14.83 

155.01 

3768.2 

18934.7 

22702.9 

0.834 

2767.6 

8.20 

3.68 

46.93 

56.08 

151.09 

140.55 

10.54 

12.74 

43.34 

23981.7 

177.63 

109.21 

420.37 

418.50 

1.87 

7.03 

117.93 

32730.5 

109.30 

412.73 

10.81 

401.92 

250.83 

1.45 

63.28 

183.23 

138.38 

421.42 

65.33 

127.81 

368.91 

2216.2 

58.86 

139.63 
124

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 08 

FAULT TYPE: IMPROPER INDOOR AIR FLOW FAULT 

FAULT LEVEL [%]: 21.1

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 08 

FAULT TYPE: IMPROPER INDOOR AIR FLOW FAULT 

FAULT LEVEL [%]: 33.1

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

29.90 

69.90 

50.19 

99.98 

69.90 

50.19 

49.60 

46.17 

0.495 

0.879 

20.31 

802.5 

378.55 

99.98 

114.52 

14.54 

155.02 

4165.5 

17831.2 

21996.7 

0.811 

2743.8 

8.02 

4.94 

45.87 

54.66 

148.35 

137.98 

10.37 

12.41 

42.24 

23537.2 

177.89 

109.09 

418.63 

416.80 

1.83 

6.91 

117.61 

32224.8 

109.15 

411.30 

10.38 

400.92 

252.58 

1.53 

62.26 

183.67 

135.82 

419.70 

66.09 

128.00 

362.12 

2210.3 

57.58 

137.07 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.09 

69.98 

50.47 

99.87 

69.98 

50.47 

48.34 

44.95 

0.499 

0.880 

21.64 

695.1 

363.59 

99.87 

114.06 

14.19 

156.34 

4841.2 

16453.2 

21294.4 

0.773 

2722.1 

7.82 

5.90 

44.60 

53.07 

145.23 

135.02 

10.21 

12.11 

40.97 

23015.4 

178.04 

108.78 

415.86 

414.08 

1.78 

6.89 

117.10 

31624.7 

108.72 

408.91 

9.79 

399.12 

253.88 

1.51 

61.15 

184.05 

132.86 

416.96 

66.98 

127.87 

353.69 

2202.1 

56.23 

134.13 
125

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 09 

FAULT TYPE: IMPROPER INDOOR AIR FLOW FAULT 

FAULT LEVEL [%]: 5.7

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 09 

FAULT TYPE: IMPROPER INDOOR AIR FLOW FAULT 

FAULT LEVEL [%]: 10.6

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.56 

79.98 

60.42 

99.80 

79.98 

60.42 

60.14 

56.68 

0.513 

0.883 

19.84 

954.5 

408.00 

99.80 

116.56 

16.76 

157.62 

6365.0 

20839.0 

27204.0 

0.766 

2811.2 

9.68 

2.41 

55.25 

65.66 

172.96 

161.52 

11.44 

13.90 

51.76 

28293.3 

174.95 

109.10 

432.63 

430.48 

2.16 

8.37 

120.15 

37143.5 

109.81 

422.79 

15.08 

407.71 

234.76 

1.07 

70.78 

179.44 

159.22 

433.79 

59.29 

125.49 

427.66 

2245.6 

67.72 

160.44 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.61 

79.94 

60.49 

99.80 

79.94 

60.49 

59.71 

56.32 

0.515 

0.885 

20.23 

904.7 

398.80 

99.80 

116.47 

16.67 

157.67 

6676.2 

20142.3 

26818.5 

0.751 

2799.3 

9.58 

3.19 

54.89 

65.19 

172.02 

160.62 

11.40 

13.78 

51.41 

28114.9 

175.04 

109.09 

432.01 

429.88 

2.13 

8.30 

120.04 

36941.1 

109.79 

422.35 

14.90 

407.45 

235.43 

1.13 

70.45 

179.58 

158.28 

433.22 

59.54 

125.62 

424.96 

2242.8 

67.38 

159.50 
126

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 09 

FAULT TYPE: IMPROPER INDOOR AIR FLOW FAULT 

FAULT LEVEL [%]: 20.9

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 09 

FAULT TYPE: IMPROPER INDOOR AIR FLOW FAULT 

FAULT LEVEL [%]: 30.5

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

31.02 

80.18 

60.36 

100.02 

80.18 

60.36 

58.65 

55.15 

0.509 

0.881 

21.53 

800.5 

374.75 

100.02 

116.29 

16.27 

158.90 

7142.4 

18951.3 

26093.7 

0.726 

2768.3 

9.43 

4.47 

54.28 

64.37 

169.77 

158.32 

11.45 

13.84 

50.53 

27706.7 

175.00 

109.71 

429.88 

427.73 

2.15 

7.81 

119.66 

36399.8 

109.93 

420.37 

14.05 

406.32 

236.55 

1.00 

69.80 

179.59 

156.16 

430.84 

59.98 

125.09 

418.60 

2234.6 

66.49 

157.32 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.96 

79.99 

60.65 

100.03 

79.99 

60.65 

57.44 

54.15 

0.517 

0.887 

22.55 

703.4 

360.50 

100.03 

116.15 

16.12 

157.34 

7755.3 

17438.6 

25193.9 

0.692 

2743.9 

9.18 

6.11 

53.18 

63.28 

166.59 

155.57 

11.02 

13.82 

49.46 

27216.3 

175.79 

109.36 

428.84 

426.75 

2.08 

8.04 

119.47 

35894.1 

109.58 

419.72 

13.45 

406.27 

239.68 

1.05 

68.90 

180.61 

153.34 

429.86 

61.17 

125.73 

410.36 

2226.1 

65.41 

154.57 
127

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 12 

FAULT TYPE: IMPROPER INDOOR AIR FLOW FAULT 

FAULT LEVEL [%]: 14.3

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 12 

FAULT TYPE: IMPROPER INDOOR AIR FLOW FAULT 

FAULT LEVEL [%]: 24.1

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.64 

69.60 

32.01 

81.74 

69.60 

32.01 

44.63 

32.13 

0.248 

0.613 

24.97 

902.4 

407.11 

81.74 

95.30 

13.56 

163.35 

0.0 

24498.9 

24415.6 

1.000 

2277.9 

10.72 

0.59 

42.72 

49.80 

135.77 

127.33 

8.44 

12.26 

37.54 

24970.9 

147.50 

89.63 

325.66 

323.66 

2.01 

7.17 

98.81 

31871.9 

89.82 

318.55 

8.56 

309.99 

174.22 

0.97 

55.95 

152.74 

125.04 

326.47 

54.02 

108.47 

344.62 

1707.5 

52.41 

126.42 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.63 

69.98 

32.01 

81.62 

69.98 

32.01 

43.13 

32.15 

0.244 

0.649 

26.85 

799.8 

387.00 

81.62 

94.84 

13.22 

162.95 

0.0 

23354.3 

23271.3 

1.000 

2251.6 

10.34 

2.56 

41.45 

48.04 

132.52 

124.26 

8.26 

11.91 

36.12 

24278.6 

147.74 

89.47 

323.32 

321.34 

1.98 

6.90 

98.28 

31110.4 

89.62 

316.50 

7.99 

308.51 

175.99 

1.10 

54.66 

153.19 

121.94 

324.10 

55.01 

108.78 

335.22 

1701.6 

50.95 

123.33 
128

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 12 

FAULT TYPE: IMPROPER INDOOR AIR FLOW FAULT 

FAULT LEVEL [%]: 34.6

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 13 

FAULT TYPE: IMPROPER INDOOR AIR FLOW FAULT 

FAULT LEVEL [%]: 6.1

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.62 

70.02 

32.01 

81.60 

70.02 

32.01 

40.98 

32.14 

0.244 

0.705 

29.04 

695.9 

362.25 

81.60 

94.44 

12.84 

160.84 

0.0 

21976.9 

21908.4 

1.000 

2214.9 

9.89 

4.50 

39.49 

45.62 

127.80 

119.94 

7.87 

11.53 

34.10 

23319.9 

148.38 

89.31 

320.82 

318.98 

1.84 

6.69 

97.72 

30064.2 

89.37 

314.52 

7.27 

307.24 

179.44 

1.17 

52.91 

154.13 

117.65 

321.63 

56.51 

109.23 

322.26 

1691.8 

48.80 

119.02 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.02 

80.15 

34.99 

81.90 

80.15 

34.99 

52.80 

35.48 

0.196 

0.516 

27.35 

950.5 

413.46 

81.90 

97.58 

15.68 

160.10 

0.0 

28301.6 

27920.1 

1.000 

2308.3 

12.10 

1.29 

50.27 

58.63 

153.17 

143.92 

9.24 

13.88 

44.76 

28704.3 

147.72 

90.47 

336.71 

334.39 

2.32 

7.75 

101.24 

35694.7 

91.39 

328.14 

11.53 

316.61 

163.45 

0.61 

63.20 

151.94 

141.55 

337.27 

50.85 

108.81 

391.94 

1734.8 

60.86 

142.86 
129

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 13 

FAULT TYPE: IMPROPER INDOOR AIR FLOW FAULT 

FAULT LEVEL [%]: 11.0

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 13 

FAULT TYPE: IMPROPER INDOOR AIR FLOW FAULT 

FAULT LEVEL [%]: 21.1

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.01 

79.99 

34.22 

81.85 

79.99 

34.22 

51.76 

34.71 

0.191 

0.520 

28.23 

900.1 

402.36 

81.85 

97.37 

15.51 

159.95 

0.0 

27655.3 

27305.9 

1.000 

2293.9 

11.90 

2.24 

49.54 

57.45 

151.05 

141.95 

9.10 

13.52 

43.93 

28342.1 

147.55 

90.42 

335.32 

333.00 

2.31 

7.58 

100.94 

35307.6 

91.29 

326.91 

11.13 

315.78 

164.73 

0.62 

62.17 

151.87 

139.61 

335.90 

51.07 

108.60 

387.32 

1731.6 

59.66 

140.91 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.01 

80.10 

33.50 

81.92 

80.10 

33.50 

49.90 

33.94 

0.185 

0.540 

30.20 

802.4 

383.30 

81.92 

97.01 

15.09 

159.78 

0.0 

26363.7 

26091.5 

1.000 

2268.7 

11.50 

3.44 

47.92 

55.53 

146.92 

138.00 

8.92 

13.27 

42.26 

27418.9 

148.07 

90.32 

333.44 

331.23 

2.21 

7.53 

100.53 

34326.2 

91.03 

325.52 

10.45 

315.07 

168.15 

0.63 

60.80 

152.59 

135.68 

334.03 

52.20 

108.84 

374.88 

1725.6 

58.00 

137.00 
130

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 13 

FAULT TYPE: IMPROPER INDOOR AIR FLOW FAULT 

FAULT LEVEL [%]: 30.9

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

29.88 

80.00 

33.55 

81.76 

80.00 

33.55 

47.37 

33.93 

0.186 

0.593 

32.63 

701.4 

363.00 

81.76 

96.31 

14.56 

158.71 

0.0 

24903.8 

24697.4 

1.000 

2240.0 

11.03 

3.96 

45.73 

52.54 

141.63 

133.11 

8.53 

12.41 

40.13 

26092.7 

147.97 

89.89 

330.23 

328.18 

2.05 

7.38 

99.82 

32884.7 

90.59 

322.92 

9.42 

313.50 

171.87 

0.60 

58.52 

152.74 

130.77 

330.84 

53.06 

108.70 

357.66 

1718.3 

55.24 

132.13 
131

D.5 Liquid Line Restriction Fault Tests 

Table D.5. List of raw data for liquid line restriction fault tests 

Test Nominal chamber condition 

condition # TID (°F) φID (%) TOD (°F) Fault Type Fault level 

(%) 

4 70 50 82 LL 3.7 

4 70 50 82 LL 7.0 

4 70 50 82 LL 12.5 

4 70 50 82 LL 19.0 

5 80 50 82 LL 5.3 

5 80 50 82 LL 10.4 

5 80 50 82 LL 20.2 

5 80 50 82 LL 31.9 

8 70 50 100 LL 4.4 

8 70 50 100 LL 8.8 

8 70 50 100 LL 13.3 

9 80 50 100 LL 7.1 

9 80 50 100 LL 13.3 

9 80 50 100 LL 20.0 
132

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 04 

FAULT TYPE: LIQUID LINE RESTRICTION FAULT 

FAULT LEVEL [%]: 3.7

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 04 

FAULT TYPE: LIQUID LINE RESTRICTION FAULT 

FAULT LEVEL [%]: 7.0

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.33 

69.84 

50.31 

81.82 

69.84 

50.31 

50.52 

47.12 

0.499 

0.881 

19.33 

1031.7 

424.00 

81.82 

96.75 

14.93 

159.38 

4268.5 

21820.3 

26088.7 

0.836 

2309.9 

11.30 

3.45 

46.13 

55.62 

147.09 

138.00 

9.09 

13.37 

42.25 

27459.5 

147.53 

89.74 

333.13 

330.97 

2.16 

8.21 

100.46 

34444.5 

90.24 

325.04 

16.70 

308.34 

161.25 

0.95 

60.59 

151.99 

135.68 

334.02 

51.60 

108.39 

375.44 

1726.5 

57.76 

137.00 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.24 

69.96 

50.46 

81.69 

69.96 

50.46 

50.77 

47.12 

0.499 

0.872 

19.19 

1027.7 

425.08 

81.69 

96.65 

14.96 

159.88 

4472.6 

21584.3 

26056.9 

0.828 

2307.5 

11.29 

4.17 

46.26 

55.95 

147.62 

138.36 

9.26 

13.54 

42.41 

27635.1 

147.18 

89.80 

332.36 

330.16 

2.20 

7.79 

100.29 

34614.2 

90.49 

324.28 

22.12 

302.16 

154.54 

1.00 

60.79 

151.62 

136.12 

333.45 

51.36 

108.30 

378.03 

1722.6 

58.05 

137.41 
133

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 04 

FAULT TYPE: LIQUID LINE RESTRICTION FAULT 

FAULT LEVEL [%]: 12.5

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 04 

FAULT TYPE: LIQUID LINE RESTRICTION FAULT 

FAULT LEVEL [%]: 19.0

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.25 

69.91 

50.42 

81.47 

69.91 

50.42 

50.94 

46.53 

0.500 

0.848 

18.97 

1027.2 

424.23 

81.47 

96.52 

15.05 

159.95 

5151.7 

21323.2 

26474.9 

0.805 

2298.7 

11.52 

2.77 

46.06 

56.32 

147.32 

138.05 

9.27 

14.05 

42.27 

27663.9 

147.19 

89.57 

330.92 

328.67 

2.26 

7.69 

99.97 

34610.4 

90.29 

322.94 

31.34 

291.59 

144.28 

0.96 

61.14 

151.62 

135.89 

332.10 

51.65 

108.33 

377.36 

1714.5 

58.41 

137.16 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.23 

69.81 

50.53 

81.49 

69.81 

50.53 

51.12 

46.89 

0.503 

0.854 

18.69 

1026.6 

424.94 

81.49 

96.46 

14.97 

160.09 

4853.7 

21000.2 

25853.9 

0.812 

2308.1 

11.20 

4.69 

45.71 

58.06 

145.89 

136.80 

9.09 

16.33 

41.74 

27570.7 

149.68 

88.94 

331.81 

329.69 

2.12 

8.98 

100.17 

34497.9 

89.27 

324.15 

42.08 

282.07 

136.18 

1.93 

62.83 

154.27 

134.63 

332.96 

54.12 

110.78 

371.45 

1723.0 

60.12 

135.90 
134

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 05 

FAULT TYPE: LIQUID LINE RESTRICTION FAULT 

FAULT LEVEL [%]: 5.3

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 05 

FAULT TYPE: LIQUID LINE RESTRICTION FAULT 

FAULT LEVEL [%]: 10.4

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.43 

80.13 

60.36 

81.80 

80.13 

60.36 

59.17 

56.18 

0.510 

0.898 

20.96 

1013.8 

421.74 

81.80 

99.08 

17.28 

161.18 

7527.5 

23388.1 

30915.6 

0.757 

2344.8 

13.19 

3.03 

54.73 

65.87 

169.66 

159.43 

10.23 

14.91 

50.95 

32316.8 

147.10 

90.87 

345.24 

342.61 

2.63 

8.57 

103.08 

39330.8 

92.09 

335.01 

22.16 

312.84 

143.18 

0.70 

68.94 

150.90 

156.96 

346.48 

47.82 

109.48 

436.71 

1761.9 

67.26 

158.20 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.39 

80.03 

60.50 

81.80 

80.03 

60.50 

59.67 

56.21 

0.514 

0.883 

20.35 

1012.0 

418.16 

81.80 

98.96 

17.16 

159.95 

7729.5 

22667.9 

30397.4 

0.746 

2336.3 

13.01 

4.51 

54.50 

66.84 

168.49 

158.15 

10.35 

16.39 

50.46 

32272.1 

148.28 

90.86 

344.47 

341.85 

2.62 

8.53 

102.92 

39244.3 

92.01 

334.44 

29.95 

304.48 

135.99 

0.66 

69.90 

152.05 

155.75 

345.60 

49.16 

110.56 

433.78 

1758.2 

68.25 

156.96 
135

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 05 

FAULT TYPE: LIQUID LINE RESTRICTION FAULT 

FAULT LEVEL [%]: 20.2

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 05 

FAULT TYPE: LIQUID LINE RESTRICTION FAULT 

FAULT LEVEL [%]: 31.9

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.35 

79.96 

60.66 

82.06 

79.96 

60.66 

60.35 

56.54 

0.518 

0.872 

19.62 

1008.8 

418.33 

82.06 

98.24 

16.17 

159.45 

7477.4 

21783.3 

29260.6 

0.744 

2344.8 

12.48 

2.73 

51.13 

70.12 

157.98 

148.60 

9.38 

23.45 

46.68 

30511.2 

155.46 

89.64 

342.89 

340.65 

2.24 

10.72 

102.58 

37348.4 

89.83 

334.52 

44.81 

289.71 

131.73 

0.48 

73.48 

159.83 

146.40 

343.76 

57.33 

116.77 

398.43 

1767.0 

71.47 

147.57 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.33 

79.93 

60.65 

82.10 

79.93 

60.65 

62.48 

58.21 

0.518 

0.859 

17.45 

1005.9 

419.60 

82.10 

95.71 

13.62 

160.32 

4541.8 

19333.4 

23875.2 

0.810 

2321.7 

10.28 

-2.53 

41.30 

71.61 

132.00 

124.46 

7.54 

35.39 

36.22 

23696.0 

168.00 

88.02 

331.54 

329.96 

1.58 

11.25 

100.11 

30039.5 

87.49 

326.31 

62.45 

263.87 

131.87 

4.83 

76.13 

174.64 

122.37 

332.47 

74.60 

125.89 

302.35 

1741.7 

73.13 

123.62 
136

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 08 

FAULT TYPE: LIQUID LINE RESTRICTION FAULT 

FAULT LEVEL [%]: 4.4

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 08 

FAULT TYPE: LIQUID LINE RESTRICTION FAULT 

FAULT LEVEL [%]: 8.8

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

29.70 

70.21 

50.35 

100.02 

70.21 

50.35 

52.06 

47.84 

0.493 

0.855 

18.15 

1005.6 

416.67 

100.02 

115.09 

15.07 

154.18 

3384.8 

19980.4 

23365.2 

0.855 

2785.2 

8.39 

2.00 

47.61 

56.61 

152.66 

142.13 

10.53 

12.61 

44.00 

24267.9 

177.10 

109.53 

421.33 

419.43 

1.90 

6.97 

118.11 

33103.3 

109.56 

413.86 

22.22 

391.64 

238.98 

1.41 

63.58 

182.55 

139.96 

422.70 

64.42 

127.07 

374.64 

2214.4 

59.30 

141.17 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

29.71 

70.17 

50.41 

100.09 

70.17 

50.41 

51.95 

48.08 

0.495 

0.866 

18.22 

1010.3 

417.00 

100.09 

115.15 

15.07 

154.48 

3163.7 

20156.4 

23320.2 

0.864 

2790.7 

8.36 

2.84 

48.02 

57.00 

153.09 

142.51 

10.58 

12.84 

44.16 

24431.2 

177.05 

109.84 

421.62 

419.72 

1.91 

6.71 

118.16 

33281.2 

109.86 

414.02 

33.14 

380.88 

227.80 

1.54 

63.91 

182.47 

140.34 

422.82 

64.31 

126.95 

377.41 

2219.2 

59.69 

141.58 
137

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 08 

FAULT TYPE: LIQUID LINE RESTRICTION FAULT 

FAULT LEVEL [%]: 13.3

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 09 

FAULT TYPE: LIQUID LINE RESTRICTION FAULT 

FAULT LEVEL [%]: 7.1

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

29.71 

70.24 

50.45 

100.09 

70.24 

50.45 

51.97 

47.92 

0.495 

0.860 

18.27 

1011.1 

416.91 

100.09 

115.17 

15.09 

154.33 

3443.1 

20228.9 

23672.0 

0.855 

2794.6 

8.47 

1.28 

48.15 

57.35 

153.04 

142.53 

10.52 

13.18 

44.17 

24400.5 

177.51 

109.67 

422.30 

420.41 

1.90 

7.16 

118.29 

33224.3 

109.54 

414.77 

44.12 

370.64 

217.60 

1.90 

64.23 

182.95 

140.36 

423.50 

64.67 

127.34 

375.62 

2223.4 

60.03 

141.59 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.44 

80.03 

60.59 

99.84 

80.03 

60.59 

60.83 

57.33 

0.515 

0.882 

19.20 

1010.0 

421.72 

99.84 

116.65 

16.81 

157.83 

5967.9 

21346.4 

27314.3 

0.782 

2821.4 

9.68 

3.33 

56.06 

66.95 

174.74 

162.97 

11.78 

14.64 

52.30 

28691.9 

174.80 

109.74 

432.19 

429.95 

2.24 

7.46 

120.08 

37570.0 

110.59 

422.06 

31.93 

390.12 

215.38 

1.09 

71.84 

179.07 

160.68 

432.78 

59.10 

125.29 

434.90 

2241.8 

68.93 

161.85 
138

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 09 

FAULT TYPE: LIQUID LINE RESTRICTION FAULT 

FAULT LEVEL [%]: 13.3

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 09 

FAULT TYPE: LIQUID LINE RESTRICTION FAULT 

FAULT LEVEL [%]: 20.0

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.03 

79.82 

60.71 

99.93 

79.82 

60.71 

60.87 

57.20 

0.521 

0.877 

18.95 

997.9 

417.67 

99.93 

116.87 

16.94 

156.06 

6452.9 

20822.8 

27275.7 

0.763 

2826.4 

9.65 

3.36 

55.57 

67.86 

174.41 

162.47 

11.94 

15.75 

52.12 

28655.6 

176.32 

109.97 

433.40 

431.22 

2.18 

7.53 

120.29 

37538.5 

110.84 

423.82 

46.34 

377.48 

203.07 

1.26 

72.74 

180.55 

160.23 

434.42 

60.29 

126.84 

433.09 

2252.7 

69.86 

161.32 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.04 

79.92 

60.79 

100.01 

79.92 

60.79 

61.18 

57.44 

0.521 

0.875 

18.74 

996.6 

415.15 

100.01 

116.57 

16.56 

155.46 

6166.6 

20571.1 

26737.7 

0.769 

2841.6 

9.41 

4.30 

53.72 

70.76 

168.12 

157.01 

11.11 

20.74 

50.02 

28373.9 

182.67 

108.79 

433.62 

431.64 

1.98 

9.71 

120.33 

37334.5 

108.90 

425.19 

62.14 

363.05 

194.93 

2.71 

75.92 

187.42 

154.83 

434.67 

67.12 

133.55 

416.41 

2271.0 

72.72 

155.95 
139

D.6 Refrigerant Undercharge Fault Tests 

Table D.6. List of raw data for refrigerant undercharge fault tests 

Test Nominal chamber condition 

condition # TID (°F) φID (%) TOD (°F) Fault Type Fault level 

(%) 

4 70 50 82 UC 10.0 

4 70 50 82 UC 20.0 

4 70 50 82 UC 30.0 

5 80 50 82 UC 10.0 

5 80 50 82 UC 20.0 

5 80 50 82 UC 30.0 

8 70 50 100 UC 10.0 

8 70 50 100 UC 20.0 

8 70 50 100 UC 30.0 

9 80 50 100 UC 10.0 

9 80 50 100 UC 20.0 

9 80 50 100 UC 30.0 
140

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 04 

FAULT TYPE: REFRIGERANT UNDERCHARGE FAULT 

FAULT LEVEL [%]: 10.0

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 04 

FAULT TYPE: REFRIGERANT UNDERCHARGE FAULT 

FAULT LEVEL [%]: 20.0

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.31 

69.98 

50.28 

81.67 

69.98 

50.28 

51.29 

47.41 

0.496 

0.865 

18.69 

1028.0 

424.78 

81.67 

96.28 

14.61 

159.71 

3843.0 

21026.8 

24869.8 

0.845 

2291.7 

10.85 

5.62 

46.08 

56.90 

149.07 

138.77 

10.30 

14.32 

42.58 

26800.8 

146.64 

92.80 

328.67 

326.17 

2.49 

2.28 

99.47 

33638.7 

94.99 

319.83 

10.68 

309.15 

160.09 

1.57 

61.55 

150.77 

136.59 

329.62 

51.35 

108.31 

375.69 

1707.2 

58.83 

137.86 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.31 

69.98 

50.87 

81.65 

69.98 

50.87 

51.80 

47.66 

0.507 

0.857 

18.18 

1027.1 

422.39 

81.65 

95.90 

14.25 

158.83 

4351.0 

20438.8 

24789.8 

0.824 

2279.9 

10.87 

4.97 

44.98 

60.57 

145.63 

135.67 

9.96 

19.33 

41.25 

26530.7 

150.71 

93.65 

325.56 

323.14 

2.42 

1.52 

98.78 

33325.3 

95.06 

316.76 

11.37 

305.39 

159.76 

2.25 

65.21 

155.31 

133.62 

326.84 

56.51 

113.23 

366.43 

1698.7 

62.65 

134.85 
141

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 04 

FAULT TYPE: REFRIGERANT UNDERCHARGE FAULT 

FAULT LEVEL [%]: 30.0

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 05 

FAULT TYPE: REFRIGERANT UNDERCHARGE FAULT 

FAULT LEVEL [%]: 10.0

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

29.66 

70.05 

50.74 

81.63 

70.05 

50.74 

52.46 

47.85 

0.503 

0.842 

17.59 

1008.9 

420.59 

81.63 

95.05 

13.41 

158.24 

3930.0 

19426.6 

23356.7 

0.832 

2256.6 

10.35 

N/A 

41.70 

61.01 

136.16 

126.83 

9.33 

23.70 

37.31 

N/A 

155.24 

93.80 

319.93 

317.69 

2.23 

1.13 

97.51 

N/A 

94.24 

311.50 

11.30 

300.20 

164.05 

2.48 

66.13 

160.71 

124.75 

321.04 

63.22 

117.41 

127.80 

1677.8 

63.08 

126.03 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.26 

79.97 

60.19 

81.71 

79.97 

60.19 

60.15 

56.44 

0.509 

0.875 

19.82 

1004.8 

416.88 

81.71 

98.16 

16.45 

158.63 

6739.9 

21920.5 

28660.4 

0.765 

2311.7 

12.40 

5.92 

53.23 

69.91 

166.21 

155.32 

10.88 

20.55 

49.36 

30905.9 

150.71 

93.28 

338.29 

335.53 

2.77 

3.40 

101.59 

37679.2 

95.74 

328.17 

13.61 

314.56 

148.35 

0.98 

72.91 

154.39 

153.10 

339.25 

52.87 

114.01 

419.53 

1736.2 

71.25 

154.28 
142

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 05 

FAULT TYPE: REFRIGERANT UNDERCHARGE FAULT 

FAULT LEVEL [%]: 20.0

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 05 

FAULT TYPE: REFRIGERANT UNDERCHARGE FAULT 

FAULT LEVEL [%]: 30.0

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

29.77 

80.13 

60.34 

81.81 

80.13 

60.34 

61.23 

56.95 

0.509 

0.858 

18.90 

988.4 

414.82 

81.81 

97.16 

15.35 

158.13 

6168.5 

20565.3 

26733.8 

0.769 

2293.9 

11.65 

6.80 

48.88 

70.22 

154.32 

144.20 

10.12 

25.35 

44.87 

29128.0 

155.38 

94.51 

331.79 

329.31 

2.48 

1.55 

100.16 

35967.3 

96.48 

323.16 

11.63 

311.53 

157.21 

2.20 

73.65 

159.89 

141.99 

332.76 

59.78 

118.72 

393.74 

1720.9 

71.73 

143.18 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.12 

79.90 

60.71 

81.87 

79.90 

60.71 

62.52 

57.83 

0.520 

0.846 

17.39 

1006.9 

418.47 

81.87 

95.89 

14.02 

158.95 

5383.2 

19281.0 

24664.2 

0.782 

2269.7 

10.87 

-0.99 

45.32 

70.96 

142.95 

133.74 

9.21 

30.56 

40.40 

24836.1 

159.91 

94.40 

324.11 

321.81 

2.30 

1.34 

98.46 

31162.1 

95.00 

315.71 

11.88 

303.83 

160.88 

2.40 

74.86 

165.34 

131.62 

324.87 

66.98 

122.43 

332.07 

1692.3 

72.52 

132.86 
143

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 08 

FAULT TYPE: REFRIGERANT UNDERCHARGE FAULT 

FAULT LEVEL [%]: 10.0

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 08 

FAULT TYPE: REFRIGERANT UNDERCHARGE FAULT 

FAULT LEVEL [%]: 20.0

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.33 

70.00 

50.60 

100.28 

70.00 

50.60 

52.57 

48.76 

0.501 

0.868 

17.43 

1026.3 

421.19 

100.28 

114.77 

14.49 

155.11 

2523.8 

19586.3 

22110.1 

0.886 

2771.8 

7.98 

3.97 

47.81 

57.82 

155.22 

143.18 

12.04 

13.37 

44.45 

23461.8 

176.08 

113.15 

417.08 

414.97 

2.11 

0.94 

117.33 

32141.0 

114.55 

408.29 

11.62 

396.67 

241.44 

1.91 

64.51 

181.09 

141.11 

417.99 

63.83 

126.81 

375.23 

2195.5 

60.40 

142.35 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.37 

69.80 

50.28 

99.91 

69.80 

50.28 

52.59 

48.20 

0.499 

0.849 

17.21 

1029.1 

424.20 

99.91 

114.05 

14.14 

156.75 

2828.5 

19386.1 

22214.6 

0.873 

2751.6 

8.07 

1.29 

47.16 

58.14 

153.89 

141.60 

12.30 

14.36 

43.78 

22935.0 

176.01 

113.48 

411.89 

409.71 

2.19 

0.90 

116.36 

31419.9 

113.46 

402.27 

13.90 

388.38 

234.48 

2.24 

65.00 

181.25 

139.52 

412.78 

64.95 

127.21 

363.53 

2170.6 

60.79 

140.69 
144

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 08 

FAULT TYPE: REFRIGERANT UNDERCHARGE FAULT 

FAULT LEVEL [%]: 30.0

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 09 

FAULT TYPE: REFRIGERANT UNDERCHARGE FAULT 

FAULT LEVEL [%]: 10.0

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

29.98 

69.87 

50.62 

99.78 

69.87 

50.62 

53.29 

48.73 

0.504 

0.844 

16.58 

1017.8 

423.70 

99.78 

113.23 

13.45 

156.05 

2608.3 

18478.4 

21086.7 

0.876 

2726.1 

7.74 

0.28 

44.79 

61.41 

146.27 

135.01 

11.27 

20.45 

40.96 

21569.9 

182.08 

113.03 

405.55 

403.47 

2.08 

0.71 

115.18 

29799.4 

112.38 

395.66 

14.42 

381.23 

234.96 

2.39 

68.76 

188.17 

133.03 

406.52 

73.05 

133.96 

334.03 

2146.3 

64.16 

134.25 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.38 

79.92 

60.18 

99.29 

79.92 

60.18 

61.11 

57.38 

0.510 

0.875 

18.82 

1006.2 

415.59 

99.29 

115.59 

16.30 

155.24 

5086.7 

20840.6 

25927.3 

0.804 

2767.3 

9.37 

4.64 

55.27 

69.02 

175.14 

161.94 

13.20 

17.11 

51.92 

27624.8 

174.67 

113.53 

422.87 

420.44 

2.43 

1.09 

118.39 

36243.1 

115.12 

412.12 

15.74 

396.38 

221.24 

2.37 

73.81 

178.70 

159.71 

423.63 

60.40 

126.66 

429.29 

2196.5 

70.92 

160.86 
145

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 09 

FAULT TYPE: REFRIGERANT UNDERCHARGE FAULT 

FAULT LEVEL [%]: 20.0

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 09 

FAULT TYPE: REFRIGERANT UNDERCHARGE FAULT 

FAULT LEVEL [%]: 30.0

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

29.51 

79.95 

60.56 

99.78 

79.95 

60.56 

62.07 

57.74 

0.516 

0.857 

17.88 

980.1 

414.03 

99.78 

115.58 

15.81 

154.61 

5212.2 

19311.4 

24523.6 

0.787 

2776.7 

8.83 

4.74 

52.50 

70.70 

166.94 

154.37 

12.57 

21.72 

48.98 

26177.5 

180.82 

114.62 

420.94 

418.64 

2.30 

0.95 

118.04 

34794.6 

115.06 

411.04 

15.03 

396.01 

229.08 

2.25 

75.91 

185.60 

152.22 

421.80 

67.63 

133.42 

401.82 

2208.0 

72.78 

153.39 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.01 

79.85 

60.56 

99.89 

79.85 

60.56 

63.06 

58.36 

0.518 

0.846 

16.79 

1000.3 

419.79 

99.89 

114.14 

14.25 

156.28 

4121.4 

18506.7 

22628.1 

0.818 

2743.8 

8.25 

0.27 

48.08 

71.03 

153.40 

142.24 

11.16 

26.98 

44.05 

23109.5 

186.53 

113.86 

410.71 

408.56 

2.15 

0.81 

116.14 

31316.3 

113.31 

400.99 

14.82 

386.17 

232.77 

2.39 

77.11 

192.49 

140.19 

411.35 

76.46 

139.07 

348.62 

2167.7 

73.32 

141.34 
146

D.7 Refrigerant Overcharge Fault Tests 

Table D.7. List of raw data for refrigerant overcharge fault tests 

Test Nominal chamber condition 

condition # TID (°F) φID (%) TOD (°F) Fault Type Fault level 

(%) 

4 70 50 82 OC 10.0 

4 70 50 82 OC 20.0 

4 70 50 82 OC 30.0 

5 80 50 82 OC 10.0 

5 80 50 82 OC 20.0 

5 80 50 82 OC 30.0 

8 70 50 100 OC 10.0 

8 70 50 100 OC 20.0 

8 70 50 100 OC 30.0 

9 80 50 100 OC 10.0 

9 80 50 100 OC 20.0 

9 80 50 100 OC 30.0 
147

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 04 

FAULT TYPE: REFRIGERANT OVERCHARGE FAULT 

FAULT LEVEL [%]: 10.0

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 04 

FAULT TYPE: REFRIGERANT OVERCHARGE FAULT 

FAULT LEVEL [%]: 20.0

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.31 

70.09 

50.63 

81.92 

70.09 

50.63 

50.99 

47.57 

0.500 

0.880 

19.10 

1027.8 

426.17 

81.92 

97.01 

15.09 

160.18 

4123.1 

21482.0 

25605.1 

0.839 

2342.0 

10.93 

7.22 

46.45 

56.18 

149.35 

139.71 

9.63 

13.20 

42.99 

28058.3 

148.41 

88.71 

338.11 

336.02 

2.09 

10.84 

101.55 

35085.1 

88.72 

330.01 

10.65 

319.36 

170.02 

0.77 

61.05 

152.56 

137.51 

339.21 

51.05 

108.81 

380.01 

1755.7 

58.21 

138.73 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.44 

70.33 

50.43 

81.79 

70.33 

50.43 

50.86 

47.03 

0.493 

0.867 

19.47 

1032.4 

421.13 

81.79 

96.74 

14.96 

159.59 

4533.8 

22001.0 

26534.8 

0.829 

2365.9 

11.22 

4.06 

46.11 

55.16 

148.29 

138.66 

9.63 

12.62 

42.54 

28095.8 

149.60 

87.44 

342.92 

340.99 

1.93 

13.65 

102.59 

35197.9 

87.05 

335.19 

10.42 

324.77 

176.48 

0.69 

60.26 

153.88 

136.56 

343.94 

51.34 

109.07 

377.70 

1785.2 

57.37 

137.81 
148

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 04 

FAULT TYPE: REFRIGERANT OVERCHARGE FAULT 

FAULT LEVEL [%]: 30.0

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 05 

FAULT TYPE: REFRIGERANT OVERCHARGE FAULT 

FAULT LEVEL [%]: 10.0

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.28 

70.08 

50.99 

82.21 

70.08 

50.99 

50.83 

47.58 

0.507 

0.885 

19.25 

1026.0 

420.00 

82.21 

97.29 

15.08 

158.81 

4630.6 

21623.1 

26253.7 

0.824 

2418.2 

10.86 

5.53 

46.40 

55.51 

148.92 

139.70 

9.22 

12.53 

42.98 

28236.0 

152.67 

87.69 

353.92 

352.12 

1.80 

15.98 

104.92 

35495.2 

87.11 

346.24 

10.56 

335.68 

186.76 

0.69 

60.66 

156.95 

137.58 

354.91 

52.08 

110.60 

379.41 

1839.4 

57.70 

138.83 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.74 

80.03 

60.49 

81.77 

80.03 

60.49 

59.87 

56.71 

0.514 

0.893 

20.16 

1017.0 

417.27 

81.77 

98.84 

17.07 

158.93 

6835.6 

22562.4 

29398.0 

0.767 

2352.0 

12.50 

9.58 

54.94 

66.64 

170.67 

159.91 

10.76 

15.50 

51.14 

32975.3 

148.29 

89.43 

348.25 

345.72 

2.53 

11.41 

103.72 

39940.5 

89.93 

338.16 

14.67 

323.49 

152.82 

0.39 

69.74 

151.54 

157.65 

349.04 

47.91 

110.20 

438.77 

1775.8 

68.08 

158.78 
149

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 05 

FAULT TYPE: REFRIGERANT OVERCHARGE FAULT 

FAULT LEVEL [%]: 20.0

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 05 

FAULT TYPE: REFRIGERANT OVERCHARGE FAULT 

FAULT LEVEL [%]: 30.0

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.42 

80.01 

60.24 

81.66 

80.01 

60.24 

59.17 

56.22 

0.510 

0.899 

20.84 

1012.3 

413.24 

81.66 

98.74 

17.08 

158.62 

7227.7 

23217.1 

30444.7 

0.763 

2385.2 

12.76 

6.49 

54.03 

65.23 

168.97 

158.66 

10.31 

14.58 

50.66 

33001.2 

149.51 

88.14 

354.57 

352.27 

2.30 

14.74 

105.06 

40080.4 

88.02 

344.72 

14.20 

330.52 

161.55 

0.34 

68.50 

152.90 

156.43 

355.53 

47.91 

110.19 

435.95 

1813.3 

66.76 

157.59 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.07 

79.94 

60.48 

81.78 

79.94 

60.48 

58.88 

56.07 

0.515 

0.904 

21.06 

999.2 

426.19 

81.78 

98.90 

17.12 

161.90 

7929.7 

23163.4 

31093.1 

0.745 

2452.7 

12.68 

4.63 

53.89 

64.66 

168.47 

158.44 

10.03 

14.09 

50.57 

33048.6 

151.76 

87.90 

363.93 

361.79 

2.14 

17.46 

106.99 

40320.6 

87.35 

354.39 

14.33 

340.06 

171.60 

0.19 

68.00 

155.12 

156.15 

364.63 

48.24 

110.96 

436.20 

1864.6 

66.16 

157.36 
150

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 08 

FAULT TYPE: REFRIGERANT OVERCHARGE FAULT 

FAULT LEVEL [%]: 10.0

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 08 

FAULT TYPE: REFRIGERANT OVERCHARGE FAULT 

FAULT LEVEL [%]: 20.0

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.48 

70.17 

50.38 

99.91 

70.17 

50.38 

51.71 

48.02 

0.494 

0.872 

18.47 

1036.9 

416.94 

99.91 

114.69 

14.78 

154.98 

3216.7 

20956.3 

24173.0 

0.867 

2820.0 

8.57 

-0.51 

48.05 

56.20 

153.33 

141.76 

11.57 

12.35 

43.85 

24464.2 

178.02 

107.46 

425.27 

423.49 

1.78 

10.18 

118.83 

33287.1 

107.04 

417.60 

11.08 

406.52 

253.19 

1.34 

63.34 

183.28 

139.80 

426.18 

64.52 

127.95 

371.49 

2248.0 

58.90 

141.05 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.48 

70.18 

50.22 

99.86 

70.18 

50.22 

51.72 

47.99 

0.491 

0.870 

18.47 

1036.7 

419.09 

99.86 

114.60 

14.74 

155.74 

3021.9 

20951.8 

23973.7 

0.874 

2872.3 

8.35 

0.85 

47.82 

55.94 

152.63 

141.34 

11.29 

12.26 

43.67 

24603.0 

180.26 

106.24 

433.74 

432.06 

1.68 

13.38 

120.35 

33540.5 

105.44 

426.30 

10.90 

415.40 

262.77 

1.17 

63.22 

185.65 

139.35 

434.61 

65.36 

128.37 

369.70 

2297.4 

58.63 

140.51 
151

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 08 

FAULT TYPE: REFRIGERANT OVERCHARGE FAULT 

FAULT LEVEL [%]: 30.0

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 09 

FAULT TYPE: REFRIGERANT OVERCHARGE FAULT 

FAULT LEVEL [%]: 10.0

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.28 

70.03 

51.06 

99.66 

70.03 

51.06 

51.57 

48.62 

0.510 

0.896 

18.46 

1025.0 

416.46 

99.66 

114.67 

15.01 

154.84 

3380.6 

20717.9 

24098.4 

0.860 

2924.7 

8.24 

1.93 

47.72 

56.02 

154.99 

143.69 

11.30 

11.36 

44.66 

24998.3 

182.53 

106.02 

444.48 

442.89 

1.59 

15.58 

122.26 

34179.5 

105.18 

437.05 

11.14 

425.91 

270.92 

1.27 

63.33 

187.84 

141.69 

445.33 

65.64 

130.81 

375.22 

2353.4 

58.85 

142.90 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.74 

80.31 

60.09 

99.75 

80.31 

60.09 

61.04 

57.29 

0.502 

0.875 

19.28 

1016.9 

421.38 

99.75 

116.54 

16.79 

156.86 

5069.7 

21572.8 

26642.5 

0.810 

2858.3 

9.32 

7.21 

55.71 

66.39 

175.88 

163.27 

12.61 

13.97 

52.42 

29167.9 

175.36 

108.25 

437.39 

435.25 

2.14 

10.85 

121.00 

38070.9 

108.20 

427.59 

15.53 

412.06 

236.18 

0.78 

71.35 

179.35 

161.02 

438.10 

58.44 

125.32 

435.65 

2280.0 

68.36 

162.17 
152

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 09 

FAULT TYPE: REFRIGERANT OVERCHARGE FAULT 

FAULT LEVEL [%]: 20.0

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 09 

FAULT TYPE: REFRIGERANT OVERCHARGE FAULT 

FAULT LEVEL [%]: 30.0

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.39 

79.72 

60.69 

99.72 

79.72 

60.69 

60.31 

57.40 

0.523 

0.901 

19.41 

1008.0 

412.00 

99.72 

116.78 

17.06 

154.91 

6048.6 

21541.2 

27589.8 

0.781 

2901.9 

9.51 

4.95 

55.54 

66.13 

176.40 

163.49 

12.91 

13.63 

52.50 

29458.5 

178.03 

106.89 

447.24 

445.23 

2.01 

14.41 

122.74 

38523.0 

106.43 

437.52 

15.27 

422.25 

245.84 

0.69 

71.21 

182.07 

161.33 

447.93 

59.42 

127.27 

434.57 

2335.0 

68.02 

162.46 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.37 

79.99 

60.66 

99.76 

79.99 

60.66 

60.28 

57.47 

0.517 

0.904 

19.71 

1007.9 

412.94 

99.76 

116.84 

17.07 

155.43 

5861.8 

21874.4 

27736.1 

0.789 

2981.4 

9.30 

4.97 

55.73 

66.15 

176.69 

164.10 

12.59 

13.42 

52.73 

29620.9 

181.51 

106.62 

460.50 

458.64 

1.87 

17.36 

125.03 

38942.4 

105.86 

451.06 

15.17 

435.90 

259.20 

0.74 

71.39 

185.62 

161.97 

461.19 

60.67 

129.32 

435.25 

2413.0 

68.19 

163.05 
153

D.8 Presence of Non-Condensable Gas Fault Tests 

Table D.8. List of raw data for presence of non-condensable gas fault tests 

Test Nominal chamber condition 

condition # TID (°F) φID (%) TOD (°F) Fault Type Fault level 

(%) 

4 70 50 82 NON 5.0 

5 80 50 82 NON 5.0 

5 80 50 82 NON 10.0 

5 80 50 82 NON 16.0 

5 80 50 82 NON 20.0 

8 70 50 100 NON 5.0 

8 70 50 100 NON 10.0 

8 70 50 100 NON 16.0 

8 70 50 100 NON 20.0 

9 80 50 100 NON 5.0 
154

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 04 

FAULT TYPE: NON-CONDENSABLE GAS FAULT 

FAULT LEVEL [%]: 5.0

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 05 

FAULT TYPE: NON-CONDENSABLE GAS FAULT 

FAULT LEVEL [%]: 5.0

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.65 

70.09 

50.70 

81.69 

70.09 

50.70 

50.70 

47.27 

0.502 

0.880 

19.39 

1037.9 

436.15 

81.69 

96.48 

14.78 

164.27 

4601.5 

22022.8 

26624.4 

0.827 

2359.8 

11.28 

2.08 

45.67 

55.45 

148.70 

138.81 

9.89 

12.84 

42.60 

27633.8 

148.94 

88.38 

337.79 

335.72 

2.08 

10.87 

101.48 

34733.7 

88.64 

329.77 

10.27 

319.50 

170.79 

0.88 

60.54 

153.07 

136.69 

338.63 

51.67 

110.43 

375.41 

1759.4 

57.74 

137.94 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.74 

80.01 

60.50 

81.80 

80.01 

60.50 

59.22 

56.24 

0.514 

0.898 

20.78 

1018.0 

433.71 

81.80 

98.73 

16.93 

164.38 

7639.1 

23276.1 

30915.2 

0.753 

2375.2 

13.02 

2.67 

54.04 

65.10 

169.87 

159.40 

10.46 

14.15 

50.94 

32207.8 

147.79 

90.00 

347.48 

344.91 

2.57 

10.52 

103.56 

39283.5 

90.66 

337.44 

14.44 

323.00 

153.13 

0.46 

68.35 

151.07 

157.15 

348.29 

47.60 

110.01 

433.53 

1777.1 

66.77 

158.34 
155

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 05 

FAULT TYPE: NON-CONDENSABLE GAS FAULT 

FAULT LEVEL [%]: 10.0

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 05 

FAULT TYPE: NON-CONDENSABLE GAS FAULT 

FAULT LEVEL [%]: 16.0

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.77 

80.07 

60.64 

81.79 

80.07 

60.64 

59.33 

56.23 

0.516 

0.895 

20.75 

1020.5 

431.00 

81.79 

98.63 

16.84 

163.94 

7928.9 

23298.9 

31227.8 

0.746 

2381.7 

13.11 

2.65 

53.94 

65.41 

170.56 

159.60 

10.96 

14.39 

51.02 

32520.7 

147.50 

89.84 

348.89 

346.42 

2.47 

11.12 

103.86 

39523.1 

90.37 

338.82 

14.54 

324.28 

153.72 

0.42 

68.53 

150.77 

157.23 

349.80 

46.99 

108.61 

436.31 

1786.8 

66.97 

158.46 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.41 

80.05 

60.26 

81.72 

80.05 

60.26 

59.19 

56.26 

0.509 

0.900 

20.86 

1008.7 

435.35 

81.72 

98.64 

16.92 

163.66 

7164.5 

23148.6 

30313.1 

0.764 

2435.4 

12.45 

5.46 

53.36 

68.28 

170.42 

159.69 

10.73 

17.23 

51.05 

32523.7 

153.95 

89.43 

358.72 

355.35 

3.38 

13.76 

105.92 

39785.9 

89.91 

349.00 

14.13 

334.87 

164.45 

1.54 

71.57 

157.41 

157.45 

359.79 

51.53 

115.08 

431.12 

1836.4 

69.83 

158.63 
156

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 05 

FAULT TYPE: NON-CONDENSABLE GAS FAULT 

FAULT LEVEL [%]: 20.0

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 08 

FAULT TYPE: NON-CONDENSABLE GAS FAULT 

FAULT LEVEL [%]: 5.0

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.39 

79.92 

60.28 

81.77 

79.92 

60.28 

59.35 

56.22 

0.512 

0.894 

20.57 

1007.2 

431.75 

81.77 

98.57 

16.79 

162.79 

7261.9 

22794.9 

30056.8 

0.758 

2473.0 

12.15 

3.88 

52.78 

69.41 

169.29 

158.78 

10.51 

18.70 

50.70 

31717.7 

157.55 

89.03 

365.89 

362.89 

3.00 

16.42 

107.40 

38933.0 

88.78 

356.27 

14.91 

341.35 

172.06 

1.67 

72.77 

161.15 

156.56 

366.83 

53.82 

117.74 

416.21 

1878.4 

70.90 

157.74 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.65 

69.98 

50.61 

99.94 

69.98 

50.61 

51.46 

48.19 

0.502 

0.885 

18.53 

1035.5 

437.65 

99.94 

114.63 

14.70 

160.95 

3292.8 

20998.0 

24290.8 

0.864 

2836.6 

8.56 

-1.92 

47.16 

56.17 

154.71 

142.93 

11.78 

11.83 

44.34 

24261.8 

177.70 

107.81 

425.15 

423.33 

1.81 

9.62 

118.80 

33142.4 

107.55 

417.31 

11.09 

406.22 

251.51 

1.30 

63.29 

182.83 

140.92 

425.90 

64.11 

127.08 

371.39 

2238.0 

58.96 

142.13 
157

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 08 

FAULT TYPE: NON-CONDENSABLE GAS FAULT 

FAULT LEVEL [%]: 10.0

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 08 

FAULT TYPE: NON-CONDENSABLE GAS FAULT 

FAULT LEVEL [%]: 16.0

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.51 

79.50 

59.89 

81.82 

79.50 

59.89 

59.41 

56.59 

0.512 

0.904 

20.09 

1018.2 

434.36 

81.82 

98.24 

16.42 

164.45 

5925.6 

22512.1 

28437.7 

0.792 

2500.9 

11.37 

7.16 

51.61 

68.88 

166.79 

155.87 

10.92 

19.30 

49.57 

31098.2 

158.32 

88.79 

368.68 

366.70 

1.99 

17.86 

107.96 

38225.9 

87.93 

359.13 

15.13 

344.00 

177.21 

1.50 

72.31 

162.16 

153.73 

369.53 

54.28 

116.43 

406.35 

1902.1 

70.40 

154.98 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.42 

70.02 

50.26 

99.69 

70.02 

50.26 

51.48 

48.07 

0.495 

0.881 

18.54 

1027.5 

436.23 

99.69 

114.52 

14.84 

159.75 

2948.7 

20850.8 

23799.5 

0.876 

2892.1 

8.23 

-0.37 

46.80 

56.44 

156.21 

144.32 

11.90 

11.53 

44.92 

24146.9 

180.71 

107.81 

435.34 

433.36 

1.98 

11.45 

120.64 

33186.5 

107.58 

427.50 

11.22 

416.28 

260.06 

1.23 

63.73 

185.92 

142.26 

436.15 

65.35 

129.45 

369.72 

2296.2 

59.21 

143.51 
158

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 08 

FAULT TYPE: NON-CONDENSABLE GAS FAULT 

FAULT LEVEL [%]: 20.0

HEAT PUMP FAULT TEST SUMMARY 

INDOOR/OUTDOOR CONDITION #: 09 

FAULT TYPE: NON-CONDENSABLE GAS FAULT 

FAULT LEVEL [%]: 5.0

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.33 

70.21 

50.81 

99.68 

70.21 

50.81 

51.51 

48.42 

0.502 

0.891 

18.70 

1023.5 

435.92 

99.68 

114.77 

15.09 

160.08 

3268.8 

20954.3 

24223.1 

0.865 

2936.0 

8.25 

0.34 

46.80 

57.66 

158.41 

146.07 

12.34 

12.02 

45.64 

24743.6 

182.90 

107.46 

443.51 

441.45 

2.06 

13.63 

122.09 

33938.0 

106.82 

435.39 

11.91 

423.49 

265.08 

1.59 

64.82 

188.06 

144.01 

444.38 

66.03 

130.99 

375.25 

2340.0 

60.20 

145.25 

RUNNING CONDITIONS

Barometric Pressure (inHg): 

Indoor Dry-Bulb Temperature (°F): 

Indoor Dew-Point Temperature (°F): 

Outdoor Dry-Bulb Temperature (°F): 

AIR SIDE CONDITIONS

(INDOOR UNIT) 

Inlet Dry-Bulb Temperature (°F): 

Inlet Dew-Point Temperature (°F): 

Exit Dry-Bulb Temperature (°F): 

Exit Dew-Point Temperature (°F): 

Inlet Relative Humidity (-): 

Exit Relative Humidity (-): 

Evaporator Coil Temp Drop (°F): 

Air Flow Rate (SCFM): 

Fan Power Consumption (W): 

(OUTDOOR UNIT) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Condensing Unit Temp Gain (°F): 

Fan Power Consumption (W): 

(OVERALL PERFORMANCE) 

Latent Capacity (Btu/h): 

Sensible Capacity (Btu/h): 

Overall Capacity (Btu/h): 

Sensible Heat Ratio (-): 

Overall Power Consumption (W): 

NET Cooling EER (Btu/h.W): 

Evaporator Energy Imbalance (%): 

REFRIGERANT SIDE CONDITIONS

(EVAPORATOR) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Superheat (°F): 

Exit Sat. Temperature (°F): 

Evaporator Capacity (Btu/h): 

(CONDENSER) 

Inlet Temperature (°F): 

Exit Temperature (°F): 

Inlet Pressure (psia): 

Exit Pressure (psia): 

Pressure Drop (psid): 

Exit Subcooling (°F): 

Inlet Sat. Temperature (°F): 

Condenser Capacity (Btu/h): 

(LIQUID LINE AND TXV) 

Cond Unit Exit Temp (°F): 

Cond Unit Exit Pres (psia): 

Liq-line Pressure Drop (psid): 

TXV Upstream Pressure (psia): 

TXV Pressure Drop (psid): 

Temperature Drop (°F): 

(COMPRESSOR) 

Suction Temperature (°F): 

Discharge Temperature (°F): 

Suction Pressure (psia): 

Discharge Pressure (psia): 

Discharge Superheat (°F): 

Comp Bottom Shell Temp (°F): 

Mass Flow Rate (lbm/h): 

Comp Power Consumption (W): 

Cond Unit Inlet Temp (°F): 

Cond Unit Inlet Pres (psia): 

30.84 

79.97 

60.51 

99.77 

79.97 

60.51 

60.55 

57.23 

0.515 

0.888 

19.42 

1019.8 

430.82 

99.77 

116.41 

16.64 

160.80 

5971.4 

21799.3 

27770.8 

0.785 

2876.2 

9.66 

1.89 

55.19 

66.25 

175.79 

163.10 

12.69 

13.90 

52.35 

28743.5 

176.38 

108.17 

438.33 

436.18 

2.15 

10.87 

121.17 

37719.1 

108.37 

428.62 

15.29 

413.32 

237.54 

0.87 

71.33 

180.36 

160.91 

439.10 

59.27 

126.67 

430.66 

2284.5 

68.41 

162.05