610.666.8980 | www.pjm.com 

955 Jefferson Ave. 

Valley Forge Corporate Center 

Norristown, PA 19403-2497 

 November 20, 2012 

Scott Baker 

Sr. Business Solutions Analyst 

Bakers1@pjm.com

(610) 666-2235 

VIA EMAIL

U.S. Department of Energy 

Email: expartecommunications@hq.doe.gov

RE: Ex Parte Communication, Docket EERE-2012-BT-STD-0022 

To whom it may concern, 

 On November 16, 2012, representatives from PJM Interconnection LLC, National Rural 

Electric Cooperatives Association, Edison Electric Institute, American Public Power 

Association, Rheem and the Steffes Corporation (together, “Joint Commenters”) met with 

members of the Department of Energy (“Department”) to discuss the request for information 

“[...] Energy Conservation Standards for Residential Water Heaters”, the comments filed 

therein, and follow-up items from a previous meeting on September 5, 2012. See below for 

complete attendee list. 

 The main purpose of this meeting was to review research that Joint Commenters had 

done with water heater manufacturers to identify technology solutions, and their feasibility and 

cost, to enable electric storage water heaters to be grid-enabled at the point of manufacture. 

Every water heater manufacturer that the Joint Commenters spoke with was not only supportive 

of the idea, but in most cases was already developing such a device for the water heater. As an 

example, Joint Commenters presented a manual for the Whirlpool ‘Energy Smart’ water heater, 

which has grid-enabling features that allow for its control by utilities or the customer (see 

attachment). 

 The meeting adjourned with the Department asking Joint Commenters to think about 

ways in which utilities could routinely report the number of grid-enabled water heaters enrolled 

in their respective demand response programs and Joint Commenters agreed to file reporting 

options as additional comments in the docket. 

 

Sincerely, 

/s/ Scott Baker, on behalf of Joint Commenters 

Attachment: Whirlpool Energy Smart Water Heater Manual 
610.666.8980 | www.pjm.com 

955 Jefferson Ave. 

Valley Forge Corporate Center 

Norristown, PA 19403-2497 

Attendees: 

Name Organization 

Ashley Armstrong Department of Energy 

Scott Baker PJM Interconnection 

Gary Connett Great River Energy 

John Cymbalsky Department of Energy 

Chuck Foster EEI 

Craig Glazer PJM Interconnection 

Kathleen Hogan Department of Energy 

Michael Hyland APPA 

Karen Myers Rheem 

David Mohre NRECA 

Jay Morrison NRECA 

Peter Reynolds Rheem 

Steve Rosenstock EEI 

Paul Steffes Steffes Corporation 

 
Attachment A 
PRINTED IN THE U.S.A 0411 PART NO. 318686-000 1

GRID

ENABLED

ENERGY STANDARD VACATION

SMART

°F/°C

F

Residential Electric

Water Heater

Installation

Instructions and

Use & Care Guide

 To obstain technical, warranty, or service assistance during or after the 

 installation of this water heater, visit our website at:

http://www.whirlpoolwaterheatersupport.com

or call tool free

1-877-817-6750

 When calling for assistance, please have the following information ready:

 1. Model Number 4. Date of Installation

 2. 7 Digit Product Number 5. Place of Purchase

 3. Serial Number

Table Of Contents PAGE

 Water Heater Safety ............................................................................ 2

 Installing Your Electric Water Heater ................................................... 3-9

 Unpacking Instructions ................................................................... 3

 Location Requirements .................................................................. 4

 Water System Piping ................................................................... 5

 Electrical Requirements ................................................................. 7

 Installation Checklist ...................................................................... 9

 Operating Your Water Heater ............................................................. 10-12

 Water Heater Start-Up ................................................................... 10

 Water Temperature Regulation ...................................................... 10

 Energy Smart® Module/Operational Modes ................................... 11

 Electronic Thermostat .................................................................... 12

 Smart Grid Technology .................................................................. 13

 Operational Conditions ................................................................... 14

 Maintenance of Your Water Heater .................................................... 15-23

 Diagnostic Code (ESM)..................................................................17-18

 Diagnostic Code (ET).................................................................... 19-20 

 Trouble Shooting Chart .....................................................................21

 Repair Parts illustration ................................................................... 22

 Thermostat Wiring Diagram ............................................................ 23

LOW LEAD

COMPLIANT

®®
2

 Your safety and the safety or others are very important.

We have provided many important safety messages in this manual and on your appliance. Always read and obey all

safety messages.

This is the safety alert symbol.

This symbol alerts you to potential hazards that can kill or hurt you and others.

All safety messages will follow the safety alert symbol and either the word “DANGER” or

“WARNING”. These words mean:

DANGER: indicates an imminently hazardous situation 

which, if not avoided, will result in death or injury.

WARNING: indicates a potentially hazardous situation 

which, if not avoided, could result in death or injury.

All safety messages will tell you what the potential hazard is, tell you how to reduce the chance of injury, and tell you

what can happen if the instructions are not followed.

 Important Safety Instructions

IMPORTANT: Hydrogen gas is produced in a hot water system served by this heater that has not been used for a long

period of time (2 weeks or more). Hydrogen is extremely fl ammable. To reduce the risk of injury under these

conditions, it is recommended that the hot water faucet be opened for several minutes at the kitchen sink before using

any electrical appliance connected to the hot water system. When hydrogen is present, there will probably be an unusal

sound such as air escaping through the pipe as the water begins to fl ow. There should be no smoking or open fl ame

near the faucet at the time it is open.

The California Safe Drinking Water and Toxic Enforcement Act requires the Governor of California to publish a list of 

substances known to the State of California to cause cancer, birth defects, or other reproductive harm, and requires 

businesses to warn of potential exposure to such substances.

• WARNING: This product contains a chemical known to the State of California to cause cancer, birth defects, or other 

 reproductive harm. 

• This appliance can cause low-level exposure to some of the substances listed in the Act.

WATER HEATER SAFETY
3

IMPORTANT: Do not remove any permanent instructions,

labels, or the data label from outside of the water heater or 

on the inside of panels.

• Remove exterior packaging and place installation

 components aside.

• Do not remove the envelope bag containing the

 water heater literature from the side of the water

 heater.

• Inspect all parts for damage prior to installation and

 start-up.

• Completely read and understand all instructions 

 before attempting to assemble and install this product.

• Replace this manual inside the envelope bag when

 installation is complete.

• After installation, dispose of packaging material in

 the proper manner.

INSTALLING YOUR WATER HEATER 

Consumer Information

This water heater should be installed in accordance

with the local code authority having jurisdiction, the 

power company or electric utility, and this installation 

manual. In the absence of local code requirements, 

follow the regulations set forth in the latest edition of the

National Electric Code, NFPA70. This is available from 

the following:

National Fire Protection Agency 

1 Batterymarch Park

Quincy, MA 02269

American National Standards Institute

1430 Broadway

New York, NY 10018

Check your phone listings for the local authorities 

having jurisdiction over your installation.

Consumer Responsibilities

This manual has been prepared to acquaint you with 

the installation, operation, and maintenance of your electric water heater and provide important safety information 

in these areas.

We urge you to read all of the instructions thoroughly before attempting the installation or operation of this water 

heater. This manual should be kept for future reference.

The manufacturer of this water heater will not be liable for 

any damages caused by failure to comply with the installation and operating instructions outlined in this manual.

If you lack the necessary skills required to properly

install this water heater or you have difficulty following 

the directions, you should not proceed but have a 

qualified person perform the installation of this water 

heater.

Examples of a qualified personnel include: 

licensed plumbers, authorized electric company personnel, and authorized service person.

Massachusetts code requires this water heater to be 

installed in accordance with Massachusetts Plumbing 

and Fuel Code 248-CMR 2.00: State Plumbing Code and 

248-CMR 5.00.

A data plate identifying your water heater can be found

adjacent to the energy smart module. When referring to 

your water heater always have the information listed on 

the data plate readily available, to include the model and 

serial number.

Retain your original receipt as proof of purchase.

Insulation Blankets

The use of an insulation blanket on this water heater is 

not needed nor recommended. The purpose of an insulation blanket is to reduce the standby heat loss encountered with storage tank heaters. Your water heater meets 

or exceeds the National Appliance Energy Conservation 

Act standards with respect to insulation and standby loss 

requirements, making an insulation blanket unnecessary.

Unpacking the Water Heater

Removing Packaging Materials WARNING

Excessive Weight Hazard

Use two or more people to move and install 

water heater.

Failure to do can result in back or 

other injury.
4

 

 

2 1/2” Max

 Pipe to

adequate

 drain

At least 2” inches greater than

the diameter of the water

heater. Figure 1

Figure 2

Residential Garage

Installation

Vehicle

Stop

Drain

Metal Drain Pan

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ENERGY STANDARD VACATION

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Location Requirements

Site location

Select a location near the center of the water piping

system. It must be installed indoors and in a vertical

position on a level surface, in an area where water 

leakage will not cause consequential damage.

The water heater should be located in an area not

subject to freezing temperatures. Water heaters located

in unconditioned spaces (i.e., attics, garages, basements, etc.) may require the water piping and drain 

piping to be insulated to protect against freezing. The 

drain and controls must be easily accessible for operation and service.

Keep combustibles such as boxes, magazines, clothes, 

etc., away from the water heater area.

Do not use this water heater in conjunction with a spa or 

hot tub.

IMPORTANT: The water heater should be located in 

an area where leakage of the tank or connections will 

not result in damage to the area adjacent to the water 

heater or to lower floors of the structure. Due to the 

normal corrosive action of the water, the tank will 

eventually leak after an extended period of time. 

Also, any external plumbing leak, including those 

from improper installation, may cause early 

failure of the water tank due to corrosion if not 

repaired. If the homeowner is uncomfortable with 

making the repair, a qualified person should be 

contacted. A suitable metal drain pan should be 

installed under the water heater as shown below. This 

metal drain pan is to protect the property from damage 

which may occur from normal condensate formation 

on the tank or leaks in the tank and pipe connections. 

The metal drain pan must limit the water level to a 

maximum depth of 2-1/2 inches and be two inches 

wider than the heater and piped to an adequate drain. 

Locate the water heater near a 

suitable indoor drain. Outdoor drains are subject to 

freezing temperatures which can obstruct the drain 

line. The piping should be at least 3/4”ID and pitched 

for proper drainage.

Under no circumstance will the manufacturer or 

seller of this water heater be held liable for any 

water damage that is caused by your failure to 

follow these instructions.

NOTE: Local codes and requirements in your area may

require the water heater to be installed such that the 

bottom element is elevated from the floor at least 18 

inches.

NOTE: The water heater shall be located so it is not 

subject to physical damage by moving vehicles or area 

flooding.

State of California

NOTE: The water heater must be braced, anchored, or 

strapped to avoid moving during an earthquake. Contact

local utilities for code requirements in your area or call

1-877-817-6750 and request instructions.
5

Water supply pressure should be around 50 to 60 psi 

and should not exceed 80 psi. If this occurs, a pressure 

reducing valve should be installed in the cold water inlet 

line. This should be placed on the supply to the entire 

house in order to maintain equal hot and cold water 

pressures.

IMPORTANT: Heat cannot be applied to the water fi ttings 

on the heater as they may contain nonmetallic parts. 

If solder connections are used, solder the pipe to the 

adapter before attaching the adapter to the hot and cold 

water fi ttings.

IMPORTANT: Always use a good grade of joint compound and be certain that all fi ttings are drawn up tight.

1. Install the water piping and fitting as shown in 

 Figure 3. Connect the cold water supply (3/4” NPT)

 to the fitting marked “Cold”. Connect the hot water 

 supply (3/4” NPT) to the fitting marked “Hot”.

IMPORTANT: Some models may contain energy saving

heat traps to prevent the circulation of hot water within 

the pipes. Do not remove these inserts.

2. The Installation of dielectric unions in both the hot 

 and cold water supply lines is recommended for 

 ease of removing the water heater for service or 

 replacement.

3. Some local codes may require, and the manufac- 

 turer of this water heater recommends,

 installing a mixing valve in the domestic hot water

 line as shown in Figure 4. These valves reduce the

 point-of-use temperature of the hot water by mixing

 cold and hot water and are readily available. 

 Contact a licensed plumber or the local plumbing 

 authority.

4. If installing the water heater in a closed water

 system, install a relief valve or expansion tank in

 the cold water line as specified under “Closed

 System/Thermal Expansion”.

5. Install a shut-off valve in the cold water inlet line. It

 should be located close to the water heater and be

 easily accessible. Know the location of this valve

 and how to shut off the water to the heater.

6. Install a discharge line from the temperature and 

 pressure relief valve in the opening marked “T & P

 RELIEF VALVE”. Install as specified under

 “Temperature and Pressure Relief Valve”.

7. After piping has been properly connected to the

 water heater, open the nearest hot water faucet. 

 Then open the cold water shut off valve and

 allow the tank to completely fill with water. To purge 

 the lines of any excess air and sediment, keep the

 hot water faucet open for 3 minutes after a constant

 flow of water is obtained. Close the faucet and

 check all connections for leaks.

In a Closed System use a 

Thermal Expansion Tank.

Pressure Reducing

Valve With Bypass

Main 

Water 

Supply Cold Water

Supply to

Fixtures

Cold Water

Inlet Valve

Hot Water

Outlet

Union

Temperature and

Pressure Relief Valve

Discharge line 6” maximum

above drain

Drain line

3/4” ID

minimum

Drain Metal Drain Pan

2-1/2” depth max.

1”

Min. Massachusetts:

Install vacuum relief

in cold water line per

section 19 MGL 142.

Figure 3

Water Piping Installation

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Figure 4

Mixing Valve

Top Water Connections

Unmixed

Hot Water

Mixed Water

To Fixtures

Cold Water

Inlet

Hot

Water

Outlet

Mixing Valve

(Set To 120 F) 0

Follow The Mixing Valve

Manufacturer’s Instructions

Water System Piping

Piping Installation

Piping, fi ttings, and valves should be installed according

to the installation drawing (Figure 3). If the indoor installation area is subject to freezing temperatures, the 

water piping must be protected by insulation.
6

Please note the following:

DO NOT install this water heater with iron piping. 

 The system should be installed only with piping that 

 is suitable for potable (drinkable) water such as 

 copper, CPVC, or polyethylene (PEX). 

 DO NOT use PVC water piping.

DO NOT use any pumps, valves, or fi ttings that are 

 not compatible with potable water.

DO NOT use valves that may cause excessive 

 restriction to water fl ow. Use full-fl ow ball or gate

 valves only.

DO NOT use tin-lead solder in potable water lines. 

 Use 95/5 tin antimony or other equivalent material.

 DO NOT tamper with the energy smart module,

 electronic thermostat, temperature sensors, heat- 

 ing elements, electrical connections, or temperature 

 and pressure relief valve. Tampering voids all war- 

 ranties. Only qualifi ed person should service these 

 components.

 DO NOT use with piping that has been treated with

 chromate’s, boiler seal, or other chemicals.

 DO NOT add any chemicals to the system piping

 which will contaminate the potable water supply.

Closed System/Thermal Expansion

Typically, a closed system includes a pressure reducing 

valve (PRV) on the cold water inlet (supply line). As water 

is heated, it expands (thermal expansion). In a closed system, the volume of water will grow. As the volume of water 

grows, there will be a corresponding increase in water 

pressure due to thermal expansion. Thermal expansion 

can cause premature tank failure (leakage). This type of 

failure is not covered under the limited warranty. Thermal 

expansion can also cause intermittent temperaturepressure relief valve operation: water discharged from the 

valve due to excessive pressure build up. The temperature-pressure relief valve is not intended for the constant 

relief of thermal expansion. This condition is not covered 

under the limited warranty. 

A properly-sized thermal expansion tank should be installed on all closed systems to control the harmful effects 

of thermal expansion. Contact a plumbing service agency 

or your retail supplier regarding the installation of a thermal expansion tank.

Temperature and Pressure

Relief Valve

Figure 5

Temperature and Pressure

Relief Valve Installation

Optional location some

models only

Temperature and

Pressure Relief Valve

Discharge Line

3/4 inch min.

Do not cap or plug.

6 inch

maximum Drain Pan

Drain

GRID

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ENERGY STANDARD VACATION

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°F/°C

F

For protection against excessive pressures and

temperatures, a temperature and pressure relief valve

must be installed in the opening marked “T&P RELIEF

VALVE” (See Figure 5). This valve must be design certifi ed by a nationally recognized testing laboratory that 

maintains periodic inspection of the production of listed 

equipment or materials as meeting the requirements 

for Relief Valves for Hot Water Supply Systems, ANSI 

Z21.22. The function of the temperature and pressure 

relief valve is to discharge water in large quantities in the 

event of excessive temperature or pressure developing in the water heater. The valve’s relief pressure must 

not exceed the working pressure of the water heater as 

stated on the rating plate.

IMPORTANT: Only a new temperature and pressure 

relief valve should be used with your water heater. Do 

not use an old or existing valve as it may be damaged or 

not adequate for the working pressure of the new water 

heater. Do not place any valve between the relief valve 

and the tank.

Explosion Hazard

• Temperature-pressure relief 

valve must comply with ANSI 

Z21.22-CSA 4.4 and ASME 

code.

• Properly sized temperaturepressure relief valve must be 

installed in opening provided.

• Can result in overheating 

and excessive tank pressure.

• Can cause serious injury or 

death.

Expansion Tank Sizing Chart

Inlet Water Heater Capacity (Gallons)

 Water

 Pressure 30 40 50 66 82

Expansion 40psi 2 2 2 5 5

Tank 50psi 2 2 2 5 5

Capacity 60psi 2 2 5 5 5

Needed 70psi 2 2 5 5 5

 80psi 2 5 5 5 5

A thermal expansion tank can help prevent damage to the 

water heater and other appliances (i.e.: washing machine, 

ice maker, dishwasher, etc.).

IMPORTANT: Do not plug or remove the temperature and 

pressure relief valve (T&P valve).
7

The Temperature & Pressure Relief Valve:

• Must be connected to an adequate discharge line.

• Must not be in contact with any electrical part.

• Must not be rated higher than the working pressure

 shown on the data plate of the water heater.

The Discharge Line:

• Must not be smaller than the pipe size of the relief

 valve or have any reducing coupling installed in the

 discharge line.

• Must not be capped, blocked, plugged, or contain

 any valve between the relief valve and the end of 

 the discharge line.

• Must terminate a maximum of six inches above a

 fl oor drain or external to the building. In cold climates, 

 it is recommended that the discharge pipe be termi- 

 nated at an adequate drain inside the building.

• Must be capable of withstanding 250° F (121°C)

 without distortion.

• Must be installed to allow complete drainage of

 both the valve and discharge line.

T&P Relief Valve and Pipe Insulation:

1. Locate the temperature and pressure relief valve on 

the water heater (also known as a T&P Relief Valve, 

(Figure 6). 

2. Locate the slit running the length of the insulation.

3 Spread this slit open and slip it up under the T&P 

Relief Valve (See Figure 6). Apply gentle pressure to 

the insulation to ensure it is fully seated on the T&P 

Relief Valve. Once sealed, secure the insulation with 

a section of duct tape, electrical tape, or equivalent.

IMPORTANT: The insulation or tape must not block 

the discharge opening or hinder access to the manual 

relief lever. Ensure a discharge pipe is installed into 

the T&P valve discharge opening per the instructions 

manual.

4. Locate the hot water (outlet) & cold water (inlet) pipes 

to the water heater.

5. Locate the slit running the length of a section of pipe 

insulation.

6. Spread the slit open and slip the insulation over 

the cold water (inlet) pipe. Apply gentle pressure 

along the length of the insulation to ensure it is fully 

seated around the pipe. Also ensure that the base of 

insulation is flush with the water heater. Once seated, 

secure the insulation with duct tape, electrical tape, or 

equivalent.

7. Repeat steps 5 through 6 for the hot water (outlet) 

pipe.

8. Add additional sections of pipe insulation as needed.

 

Solar Installation

If this water heater is used as a solar storage heater or

as a backup for the solar system, the water supply

temperatures to the water heater tank may be in excess

of 120° F (48.8° C). A mixing valve or other temperature 

limiting valve must be installed in the water supply line to 

limit the supply temperature to 120° F (48.8° C).

Note: Solar water heating systems can often supply water 

with temperatures exceeding 180° F (82.2° C) and may 

result in water heater malfunction.

Electrical Requirements

Electric Shock Hazard

Disconnect power before 

servicing.

Replace all parts and panels

before operating.

Failure to do so can result in

death or electric shock.

WARNING

Fire Hazard

Use 10 gauge solid copper wire.

Use a UL approved strain relief.

Connect ground wire to green

ground screw.

Failure to do so can result in 

death, fire, or electrical shock.

WARNING

If you lack the necessary skills required to properly

install the electrical wiring to this water heater, do not

proceed, but have a qualifi ed electrician perform the

installation.

When making the electrical connections, always make

sure:

• The electrical supply has the proper overload fuse

 or circuit breaker protection.

• Wire sizes and connections comply with all

T&P Relief Valve Insulation applicable codes.

Manual Relief Lever

T&P Relief Valve

T&P Relief Valve

Drain Line

Figure 6

Temperature and Pressure

Relief Valve Installation
8

• Wiring is enclosed in approved conduit (if required

 by local codes).

• The water heater and electrical supply are properly

 grounded.

Always reference the wiring diagram for the correct electrical connection. The complete wiring diagram can also be 

found on the top of the water heater near the junction box 

cover.

When installing the electrical wiring to the water heater

• Although this water heater is equipped with “Dry-fi re” 

 protection, be sure the tank is completely fi lled with 

 water, and all air is purged from the tank before 

 making any electrical connections (See Figure 7).

NOTE: Applying electrical power to elements that are not submerged 

in water will destroy them. The manufacturer will not warranty any 

elements damaged in this manner.

Figure 7

Heating Element

Bang

Energy Smart® 

Module (ESM)

Figure 8B

Electronic Thermostat (ET)

Electronic

Thermostat (ET)

Wiring Harness

( Junction Box )

Wiring Harness

( ET to ESM )

Ground Wire

( Attached To T-Stat Bracket Screw )

Figure 8A

Junction Box

Junction Box Cover

Red Wires

 (3)

Black Wires

 (3)

Ground Wires

Smart Grid

 Cover

1/2” Conduit

Connection

 From Home

Electrical Service

Figure 8

Wiring Diagram

Circuit

Breaker

L1

L2

To 240v

1 Phase

Power

supply

Electrical

Service ground

Ring Terminal

at Ground

Screw

B

Red

lack

Approved

Connectors

Water Heater

Smart Grid

Wire Harness

Black

Red

Green

Fire Hazard

Use 10 gauge solid copper wire.

Use a UL approved strain relief.

Connect ground wire to green

ground screw.

Failure to do so can result in 

death, fire, or electrical shock.

WARNING

1. Check and turn off power to the electrical wiring of the 

 water heater before making any electrical connections 

 to the water heater.

2. Remove the junction box cover that is secured by one 

 screw (Figure 8A). Place the cover and screw aside 

 and view the wiring diagram. Locate the four power 

 wires inside the junction box (there will be TWO red 

 wires and TWO black wires).

3. Connect the electrical supply to the water heater in

 accordance with the local utility requirements and

 codes. A standard 1/2 inch opening has been made

 in the junction box for the conduit connections (Fig- 

 ure 8A). NOTE: Use only 10 gauge solid copper wire 

 for the electrical connections and an appropriate size 

 double pole circuit breaker.

4. Ground the water heater by connecting the bare cop- 

 per ground wire from the home’s electrical service to 

 the green ground screw (located on the electrical jun- 

 ction box on top of the water heater). See Figures 8 

 and 8A.

5. There are TWO black wires and TWO red wires in the 

 water heater. The smaller red and black wires are 

 used by the Smart Grid connector.
9

Water Heater Location

□ Centrally located with the water piping system.

□ The fl ooring beneath the water heater must be able 

 to support the weight of the water heater when fi lled 

 with water. 

□ Located indoors and in a vertical position. Protected 

 from freezing temperatures.

□ Provisions made to protect the area from water 

 dam age. Metal drain pan installed and piped to an 

 adequate drain.

□ Suffi cient room to service the water heater. 

□ The site location must be free from any corrosive 

 elements in the atmosphere such as sulfur, fl uorine, 

 and chlorine. These elements are found in aero- 

 sol sprays, detergents, bleaches, cleaning solvents, 

 air fresheners, paint, and varnish removers, refriger- 

 ants, and many other commercial and household 

 products.

INSTALLATION CHECKLIST

Water System Piping

□ Temperature and pressure relief valve properly 

 installed with a discharge pipe run to an adequate 

 drain and protected from freezing (See Figure 3). 

□ All piping properly installed and free of leaks. 

□ Suitable metal drain pan lines installed and piped to 

 an adequate drain (See Figure 3). 

□ Heater completely fi lled with water (See Figure 3). 

□ Closed system pressure buildup precautions installed 

 (See “Closed System/Thermal Expansion” section). 

□ Mixing valve (when applicable) installed per manufac- 

 turer’s instructions (see Figure 4).

Electrical Connections

□ Wiring and connections comply with all applicable 

 codes. 

□ Water heater and electrical supply are properly 

 grounded. 

□ Proper overload fuse or circuit breaker protection 

 installed.

6. Connect the black power wire from the home’s electri- 

 cal service to the heater’s TWO black wires and 

 secure with the appropriate size wire nut. When you 

 are done, you will have THREE black wires under 

 one wire nut.

7. Locate and connect the remaining power wire (usu- 

 ally red, but in your home this wire may be some other 

 color) from the home’s electrical service to the water 

 heater’s TWO red wires and secure with the appro 

 priate size wire nut. When you are done, you will have 

 THREE red wires under one wire nut (depending on 

 the actual color of your home’s electric wiring). 

8. Replace the junction box cover and secure with the 

 screw removed in step 2.

9. Do not remove the Smart Grid cover from the Smart 

 Grid connector (Figure 8A) unless this feature is be- 

 ing used (see the “Smart Grid Technology” section 

 this manual).

10. Insure that the water heater is completely full of water. 

 Proceed to water heater start up in the “Operating 

 Your Water Heater” section of this manual.
10

Water Heater Start-Up

1. Carefully read and understand the section, “Water

 Temperature Regulation” section of this manual. If 

 the instructions are not clear, contact a qualifi ed 

 person.

2. Make sure the water heater has been properly 

 installed. See “Installing Your Water Heater” section.

3. Completely fi ll the tank water, Open faucet to allow 

 air to purge (see page 5, step 7).

4. After the tank is completely fi lled with water, turn on

 power to the water heater at the breaker panel.

5. Power to the water heater will allow the water heater 

 to run a system diagnostic. This typically takes eight 

 minutes. Once complete, proceed to the next step. 

 NOTE: if the system diagnostic yields any codes, 

 reference the Diagnostic Code section in this manual.

6. Adjust the thermostat to the desired temperature 

 setting as described under “Adjusting the User Inter- 

 face Module/Operational Modes” section.

OPERATING YOUR WATER HEATER

IMPORTANT: Operation of this water heater without 

access doors or insulation could result in much higher 

water temperatures than the desired set point, 

increasing the risk of scald injury. 

Do not operate water heater with 

the access doors or insulation 

removed. 

Access Doors

Figure 9

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IMPORTANT: Do not attempt to operate this water heater 

if the temperature sensor(s), electronic control board, or

surrounding insulation has been exposed to water in any

way. Immediately call a qualifi ed service technician to

inspect the water heater and replace any temperature 

sensor(s), electronic control board, or insulation that has 

been exposed to water. Do not attempt to repair these 

parts. Water heaters subjected to fl ood conditions or any 

time the temperature sensor(s) or electronic thermostat 

have been submerged in water require replacement of the 

entire water heater.

Safety Shut-Off

This water heater is designed to automatically shut-off in 

the event that the water temperature exceeds 180° F

(82.2° C). A temperature limit switch, or ECO (Energy Cut 

Off), is used to shut off the power to the system if the water temperature exceeds 180° F or 82.2° C. The ECO can 

be reset by fi rmly pushing in the red reset button located 

on the electronic thermostat (see Figure 10A on page 12). 

If the ECO continues to shut-off the water heater contact a 

qualifi ed person.

Water Temperature

Regulation

Water temperature over 125°F can cause 

severe burns instantly or death from 

scalds.

Children, disabled, and elderly are at 

highest risk of being scalded.

Feel water before bathing or showering.

Temperature limiting valves are 

recommended.

WARNING

The water heater is adjusted to a temperature setting of 

no higher than 120° F when shipped from the factory.

Water temperature can be regulated by adjusting the Energy Smart® Module to the preferred setting as shown in 

“Adjusting the Energy Smart® Module/Operational Mode”. 

The preferred starting point is 120° F. There is a hot water 

scald potential if the temperature set point is set too high.

Important: Adjusting the temperature past 120° F on the

Energy Smart® Module will increase the risk of scald injury 

in the times shown below. The use of a mixing valve is 

recommended.

Water 

Temperature 

°F °C

Time for 1st 

Degree Burn 

(Less Severe Burns)

Time for Permanent Burns 

2nd & 3rd Degree 

(Most Severe Burns)

110°F (43°C) (normal shower temp.)

116°F (47°C) (pain threshold)

116°F (47°C) 35 minutes 45 minutes

122°F (50°C) 1 minute 5 minutes

131°F (55°C) 5 seconds 25 seconds

140°F (60°C) 2 seconds 5 seconds

149°F (65°C) 1 second 2 seconds

154°F (68°C) instantaneous 1 second

(U.S. Government Memorandum, C.P.S.C., Peter L. Armstrong, Sept. 15,1978)

When leaving your home for extended periods (vacations, etc.) set the water heater to Vacation Mode. See 

“Adjusting the Energy Smart® Module/Operational Modes” 

section. This will maintain the water at low temperatures 

with minimum energy losses and prevent the tank from 

freezing during cold weather. 

NOTE: When returning from an extended stay remember 

to set the water heater back to the desired Operational 

Mode.
11

Operating Mode Descriptions

The operating modes can be changed by touching 

the desired mode icon on the Energy Smart® Module 

(See Figure 10). NOTE: All buttons on the Energy 

Smart® Module are touch sensitive and require only a 

light touch to actuate.

Adjusting the Energy Smart® Module/Operational Modes

Water Temperature Adjustment

IMPORTANT: Before attempting to adjust the thermostat, read the “Water Temperature Regulation” section on page 10. 

If the instructions are not clear, contact a qualifi ed person. 

The water temperature can be adjusted from 80° F to 150° F. Use the Up and Down Buttons to set the 

desired temperature.

ENERGY SMART® - This mode is 

used to save energy by monitoring 

usage and adjusting the set point 

to match the water draw usage pattern (Temperature set point can be 

changed).

STANDARD - Pressing this button 

will allow the temperature set point 

to be set directly.

VACATION MODE - The controller adjusts the water temperature 

to approximately 600F. This mode 

is recommended when the water 

heater is not in use for a long period 

of time. This mode minimizes energy consumption and prevents the 

water heater from freezing during 

cold weather.

GRID ENABLED - Pressing this 

button will enable or disable a request for grid control (see page 13).

CONTROL PANEL LOCK - Holding 

this button for more than 3 seconds 

switches the lock mode on or off. 

When the User Module is locked, a 

symbol and “Lock” text will be visible 

on the display.

0F/0C - This button switches the 

display to show the set temperature 

in Fahrenheit or Celsius.

Fault condition will display an “E”

followed by two digit fault code with 

Alert Icon fl ashing. (see diagnostic 

code chart page 17).

Element Functioning Icon - indicates 

power is on at either upper or lower 

element circuits and both are working properly.

°F/°C

°F/°C

F

GRID

ENABLED

ENERGY STANDARD VACATION

SMART

Control Panel 

Lock Icon

Operational

Mode Buttons

Element

Functioning

Icon

Water 

Temperature

Set Point

Temperature 

Down (Decrease)

Button

Temperature 

Up (Increase)

Button

LCD Display Panel 

Lock Button

Fahrenheit/

Celsius Temperature Display

Button

Energy Smart®

Module (ESM)

Electronic

Thermostat

(ET)

NOTE: The Electronic Thermostat (ET) is designed so that it

may control the water heater without the Energy Smart® Module 

(ESM) being operated, see page 12.

Figure 10: Energy Smart® Module (ESM)

ELEMENT ALERT GRID LOCK

ELEMENT
12

The Electronic Thermostat

IMPORTANT: The Energy Smart® Module (ESM) must 

be removed before attempting to access the thermostat. 

NOTE: for the Electronic Thermostat (ET) changes to remain in effect the Energy Smart® Module (ESM) must not 

be reconnected, also read the “Water Temperature Regulation” under the “Operating Your Water Heater” section. If 

the instructions are not clear, contact a qualifi ed person.

The Energy Smart® Module (ESM) is intended to serve 

as the primary interface for operating the water heater; 

however, the Electronic Thermostat (ET) may control the 

water heater in the absence of the Energy Smart® Module 

(ESM). 

The Electronic Thermostat consists of an electronics box 

that contains a low voltage power supply, the thermostat 

set point knob, relays to switch between the upper and 

lower heating elements, one control thermistor, a connector for the lower element control thermistor, microelectronics to convert the thermistor signals and perform switching and other logic functions, and a connector to tie the 

Electronic Thermostat (ET) to the Energy Smart® Module 

(ESM) located on the front of the water heater jacket. The 

majority of the self-diagnostics are located in the Electronic 

Thermostat (ET), including the dry-fi re protection intelligence. The thermostat circuit is designed so that when the 

upper heating element calls for heat, the power is directed 

to that element even if the lower element is also calling for 

heat. 

Diagnostic LED Light

The Green/Red LED light indicates the status of the electronic thermostat (See Figure 10A).

• Green LED will signal normal operation. The green 

LED will blink 2 times per second to indicate that power is 

applied to the upper heating element and at a faster rate 

(4 times per second) to indicate that the lower heating element is powered.

• Red LED will fl ash error codes. If a fault is detected by 

the electronic thermostat, the LED light indicator will use 

the red LED to indicate the fault detected. The fl ash code 

sequence is to consist of 1/2 second fl ashes of the red 

LED each separated by a 1/2 second off period. 

The number of fl ashes indicates the fault code number.

(See diagnostic code chart section in this manual).

 After the last 1/2 second “on” period, the LED will remain 

off until a total of 5 seconds has elapsed for the fault indication cycle (there is a 5 seconds delay before the fault 

fl ash pattern repeats). After the 5 seconds are completed, 

the fault indication cycle is repeated starting with the fi rst 

1/2 second-fl ash. The fl ash sequence will be repeated as 

long as the fault remains. Only one fault can be declared 

at a time. NOTE: the green LED is turned off when a fault 

code is being displayed, even though the heater may be 

operating in limp mode with an element on. See diagnostic code chart section in this manual.

Overriding The Energy Smart® Module (ESM)

If the Energy Smart® Module (ESM) is not working, simply 

unplug the interface module and turn the set point knob 

on the Electronic Thermostat (ET) to the desired temperature (See Figures 10A & 10B). To replace a broken or 

damaged ESM module, see page 22 for ordering information.

Figure 10A

Electronic Thermostat (ET)

Diagnostic LED Light

ECO Reset Button

Setpoint

Knob

( Remove Only After Power Is Turned Off

 When Replacing Element, see page 16 )

Plastic Guard

Upper Element

Low Voltage Wiring

Energy Smart®

Module (ESM)

Figure 10B

Electronic Thermostat (ET)

Electronic

Thermostat (ET)

Thermostat

Setpoint Knob

Junction Box

Wiring Harness

Thermistor

Wire Harness

NOTE: Smart Grid will be disabled when the Energy 

Smart® Module (ESM) is disconnected from the junction 

box wiring harness.

Electrical Shock Hazard

Do not remove the plactic

guard from over wiring.

Do not touch electrical wiring.

Failure to do so can result in 

death or electrical shock.
13

Smart Grid Technology

The electric Smart Grid will enable signifi cant improvements in electric power reliability and quality through reduction of 

peak power demand, while providing consumers the knowledge and ability to manage their energy consumption and utility 

costs.

According to the Department of Energy (DOE), since 

1982 the growth in peak electricity demand has 

exceeded power transmission growth. This has caused 

more frequent blackouts and service interruptions, as 

well as an increase in the costly reserve capacity the 

power grid requires to meet higher peak demands. 

The increased demand for electrical power across the 

nation has also led to higher peak utility costs. 

Smart appliances are one way to help mitigate this 

problem. By using advanced digital communication 

technologies, smart appliances will be able to 

communicate with local power company or home 

energy management systems, and react accordingly 

to save energy and money. For example, during peak 

demand periods the water heater may pause or delay 

its power consumption and thus reduce the load on the 

smart utility grid. Additionally, smart appliances will also 

communicate with consumers to let them know how 

much energy they are consuming. This will eventually 

allow consumers to control their appliances, manage 

energy usage, and to ultimately save money.

Smart Grid Control

(Where Available)

Where available, Grid Communication Adaptors may be 

supplied by the local power company or purchased from 

leading retailers. Please contact your local power company for more information.

To activate SmartGrid Control, remove the cover over 

the grid connection pins and plug in the grid communication adaptor. See Figure 10C. NOTE: use only Whirlpool 

- approved grid communication adaptors. This will enable 

the power company to communicate the peak demand 

periods for the water heater’s power usage.

 After this connection has been made, simply 

 press the “Grid Enabled” button to enable and/ 

 or disable a request for grid control. See Figure 

 10D. Enabling this feature will allow acceptance 

of the power company communication of grid management requests. Disabling this feature will allow the water 

heater to ignore grid management requests.

NOTE: Smart Grid will be disabled when the Energy 

Smart® Module (ESM) is disconnected from the junction 

box wiring harness (see page 12). 

Figure 10D

Smart Grid Control

°F/°C

GRID

ENABLED

ENERGY STANDARD VACATION

SMART

Pressing this button will enable

and/or disable a request for

Smart Grid Control

F

GRID LOCK

Figure 10C

Smart Grid Connection

Grid Connection

Pins Junction Box

Grid Communication Adaptor

(May Be Supplied By Power Company)

(May Differ in Appearance)

Electric Shock Hazard

Disconnect power before 

servicing.

Replace all parts and panels

before operating.

Failure to do so can result in

death or electric shock.

WARNING
14

Operational Conditions

Anode Rod/Water Odor

Each water heater contains at least one anode rod,

which will slowly deplete (due to electrolysis) prolonging 

the life of the water heater by protecting the glass-lined 

tank from corrosion. Adverse water quality, hotter water 

temperatures, high hot water usage, hydronic heating devices, and water softening methods can increase the rate 

of anode rod depletion. Once the anode rod is depleted, 

the tank will start to corrode, eventually developing a leak.

Certain water conditions will cause a reaction between the 

anode rod and the water. The most common complaint 

associated with the anode rod is a “rotten egg smell” 

produced from the presence of hydrogen sulfi de gas dissolved in the water. CAUTION: Do not remove this rod 

permanently as it will void any warranties. A special anode 

rod may be available if water odor or discoloration occurs. 

NOTE: this rod may reduce but not eliminate water odor 

problems. The water supply system may require special 

fi ltration equipment from a water conditioning company to 

successfully eliminate all water odor problems.

Artifi cially softened water is exceedingly corrosive because the process substitutes sodium ions for magnesium and calcium ions. The use of a water softener may 

decrease the life of the water heater tank.

The anode rod should be inspected after a maximum of 

three years and annually thereafter until the condition of 

the anode rod dictates its replacement. NOTE: artifi cially 

softened water requires the anode rod to be inspected 

annually.

The following are typical (but not all) signs of a depleted 

anode rod:

• The majority of the rods diameter is less than 3/8”.

• Signifi cant sections of the support wire (approx. 1/3 or 

 more of the anode rod’s length) are visible. 

If the anode rod show signs of either or both it should be 

replaced (see Figure 11). NOTE: Whether re-installing or 

replacing the anode rod, check for any leaks and immediately correct if found.

Water Heater Sounds

During the normal operation of the water heater,

sounds or noises may be heard. These noises are

common and may result from the following:

1. Normal expansion and contraction of metal parts

 during periods of heat-up and cool-down.

2. Sediment buildup in the tank bottom will create

 varying amounts of noise and may cause

 premature tank failure. Drain and fl ush the tank as

 directed under “Draining and Flushing”.

Stacking

Certain water usage patterns can cause the water temperature to exceed the thermostat setting. This is known 

as “Stacking”.

Stacking occurs when a series of short draws of hot

water (3 gallons or less) are taken from the water heater 

tank. This causes increased cycling of the heater elements and can result in increased water temperatures at 

the hot water outlet. An anti-scald device is recommended 

in the hot water supply line to reduce the risk of scald 

injury. Use of a mixing valve is encouraged.

Figure 11

Anode Rod

EXPOSED

SUPPORT

WIRE

PITTED

ANODE

ROD

EXPOSED

SUPPORT

WIRE

See “Replacing the Anode Rod” in the maintenance section 

page 15.
15

Manually operate the temperature and pressure relief

valve at least once a year to make sure it is working

properly. To prevent water 

damage, the valve must 

be properly connected to 

a discharge line which 

terminates at an adequate 

drain.

Standing clear of the outlet 

(discharged water may be 

hot), slowly lift and release 

the lever handle on the

temperature and pressure 

relief valve to allow the valve to operate freely and return 

to its closed position. If the valve fails to completely reset 

and continues to release water, immediately disconnect 

the electrical power, close the cold water inlet valve and 

call a qualifi ed person.

MAINTENANCE OF YOUR WATER HEATER

Draining and Flushing

It is recommended that the tank be drained and fl ushed

every 6 months to remove sediment which may buildup

during operation. The water heater should be drained if 

being shut down during freezing temperatures. To drain 

the tank, perform the following steps:

1. T urn off the power to water heater.

2. Open a nearby hot water faucet until the water is no 

 longer hot.

3. Close the cold water inlet valve.

4. Connect a hose to the drain valve and terminate it

 to an adequate drain or external to the building.

5. Open the water heater drain valve and allow all the

 water to drain from the tank. Flush the tank with

 water as needed to remove sediment.

6. Close the drain valve and refi ll the tank (open the cold 

 water inlet valve), and restart the heater as directed 

 in this manual. CAUTION: Do not turn on power to 

 the water heater unless it is completely fi lled with 

 water. To ensure that the tank is full, open a hot water 

 f aucet and allow water to run until the air is purged 

 and the water fl ows uninterrupted from the 

 faucet.

7. Turn the electrical power on to turn the water heater 

 on. NOTE: the water heater will conduct a system 

 diagnostic prior to operation.

If the water heater is going to be shut down for an extended period, the drain valve should be left open.

Replacing the Anode Rod

1. Turn off the power to the water heater.

2. Shut off the water supply and open a nearby hot

 water faucet to depressurize the water tank.

3. Drain approximately 5 gallons of water from the

 tank. (Refer to “Draining and Flushing” for proper

 procedures.) Close drain valve.

4. Remove the old anode rod (See Figure 11).

5. Use Tefl on®

 tape or approved pipe sealant on

 threads and install new anode rod.

6. Turn on the water supply and open a nearby hot 

 water faucet to purge all air from the water system.

7. Restart the heater as directed in this manual. Turn the 

 electrical power on to turn the water heater on. 

 NOTE: the water heater will conduct a system diag- 

 nostic prior to operation. See the “Repair Parts Illus- 

 tration” for anode rod location on page 22.

Tefl on® is a registered trademark of E.I. Du Pont De Nemours and Company.

If you lack the necessary skills required to properly service this water heater or you have diffi culty following the

instructions, you should not proceed but have a qualifi ed person perform the maintenance of this water heater.

Temperature and Pressure

Relief Valve

Temperature and Pressure

Relief Valve

Figure 12

Manual Relief

Lever

Discharge line to drain

Explosion Hazard

• Temperature-pressure relief 

valve must comply with ANSI 

Z21.22-CSA 4.4 and ASME 

code.

• Properly sized temperaturepressure relief valve must be 

installed in opening provided.

• Can result in overheating 

and excessive tank pressure.

• Can cause serious injury or 

death.
16

Heating Element

Replacement

Electrical Shock Hazard

Disconnect power before 

servicing.

Replace all parts and panels

before operating.

Failure to do so can result

in death or electrical shock.

WARNING

Replacement heating elements must be of the same

style and voltage/wattage rating as the ones originally

in the water heater. This information can be found on

the fl ange or terminal block of the element or on the

water heater data plate.

1. Turn off the electric power to the water heater.

2. Drain the water heater as directed under “Draining

 and Flushing” section.

3. Remove the access cover(s), then remove the insula- 

 tion and element cover(s). Remove the plastic guard 

 covering electric wiring. 

4. Disconnect the electric wires from the heating

 element (See Figure 13). Remove the screw-in 

 element by turning the element counterclockwise 

 with an SAE 1-1/2 inch socket wrench or use an ele- 

 ment wrench. Remove the existing gasket.

5. Clean the area with a soft cloth to remove any debris 

 where the gasket fi ts to the tank. If replacing the bot- 

 tom element, remove the accumulated sediment on 

 the bottom of the tank. Refer to “Draining and Flush- 

 ing.”

6. Make sure the replacement element has the correct

 voltage and wattage rating. Lubricate the new gasket 

 with a few drops of dishwashing soap, position the 

 new gasket on the element and insert it into the water 

 heater tank (See Figure 14). Tighten the element by 

 turning it clockwise until secure.

Ground

Wire (green)

Figure 13

Element Wiring

Connection

Screws

Wires

Element

Lower Thermistor

Sensor

7. Close the drain valve. Open the nearest hot water

 faucet and allow the tank to fi ll completely with

 water. To purge the lines of any excess air and

 sediment debris, keep the hot water faucet open for

 3 minutes after a constant fl ow of water is obtained. 

 Close the faucet.

8. Check for leaks around element(s) and other connec- 

 tions.

9. Connect the electric wires to the heater element.

 make sure all wires are secure. Reinstall plastic guard 

 covering wiring.

10. Replace the insulation and access door(s).

IMPORTANT: Operation of this water heater without 

access doors or insulation could result in much higher

temperatures than the desired set point, increasing the

risk of scald injury. Do not operate water heater with the

access doors or insulation removed.

11. Reconnect the electric power to the water heater. 

12. Turn the electrical power on to turn the water heater 

 on. NOTE: the water heater will conduct a system 

 diagnostic prior to operation.

Figure 14

Element and Thermistor

Sensor

Spud Screw-in Element

Gasket

 Lower Thermistor Sensor

(Must Have Good Contact With Tank,

 Check After Replacing Element)

Sensor Bracket

Tank
17

*These instructions are brief and intended as guidance for a qualifi ed person. If you lack the necessary

skills to perform these procedures call 1-877-817-6750 for assistance.

Diagnostic Code Chart Energy Smart® Module (ESM)

(ESM) ERROR CODE INDICATES CORRECTIVE ACTION*

 E01 with an alert Icon flashing. Dry-fire, electrical power on with the tank not 

completely full of water.

1. Turn off electrical power at breaker, add water. 

2. Turn on electrical power at breaker.

3. See “Water Heater Start-Up” on page 10.

 E02 with an alert Icon flashing. Water temperature exceeded high limit. 1. Turn off electrical power at the breaker.

2. Press the reset button (see Figure 10A).

3. Turn on electrical power at breaker.

4. If error returns call a service technician for assistance.

 E03 with an alert Icon flashing. Upper thermistor sensor failure.

(Note: Upper thermistor sensor is part of

 the ET)

1. Turn off electrical power at the breaker.

2. Replace Electronic Thermostat (ET).

3. Turn on electrical power at breaker.

 E04 with an alert Icon flashing. Upper element circuit failure.

(Note: Lower element is still operable)

1. Turn off electrical power at the breaker.

2. Check element circuits for resistance of 5-25 ohms (replace if required).

3. Check wires at elements and Electronic Thermostat (ET) for damage. 

 If this 4 flashes condition continues, replace Electronic Thermostat (ET).

4. Turn on electrical power at breaker. 

 E05 with an alert Icon flashing. Lower element circuit failure.

(Note: Upper element is still operable)

1. Turn off electrical power at the breaker.

2. Check element circuits for resistance of 5-25 ohms (replace if required).

3. Check wires at elements and Electronic Thermostat (ET) for damage.

 If this 5 flashes condition continues, replace Electronic Thermostat (ET).

4. Turn on electrical power at breaker.

 E06 with an alert Icon flashing. Electronic Thermostat (ET) failure

(Internal processor).

1. Turn off electrical power at the breaker. Now turn on electrical power to 

 see if error clears. If error has not cleared, replace Electronic Thermo-

 stat (ET).

2. Turn on electrical power at breaker.

 E07 with an alert Icon flashing. Lower thermistor sensor failure. 1. Turn off electrical power at the breaker.

2. Check electrical connections at Electronic Thermostat (ET).

3. Replace Lower Thermistor Sensor.

4. Turn on electrical power at breaker.

 E08 with an alert Icon flashing. Energy Smart® Module (ESM)

failure.

1. Turn off electrical power. 

2. Check wires at the interface module for damage.

3. If this 8 flashes condition continues, replace module (ESM).

4. See “Overriding The Interface Module (ESM)” by unplugging from the 

 Electronic Thermostat (ET) on page 12. NOTE: Electronic Thermostat 

 (ET) will continue to be operate, hot water will still be available.

5. Turn on electrical power at breaker.

 E09 with an alert Icon flashing.

 E10

 E11

 E12

Electronic Thermostat (ET) error. 1. Turn off electrical power. 

2. Check wiring at Electronic Thermostat (ET) for damage.

3. Turn on electrical power at breaker.

4. If this code flashes condition continues, replace the Electronic 

 Thermostat (ET).

IMPORTANT: Before attempting to adjust the thermostat, read the “Water Temperature Regulation” 

section page 10. 

The Electronic Thermostat (ET) is designed so 

that it may control the water heater without the 

Energy Smart® Module (ESM) being operated, 

see page 12.

If the instructions are not clear, contact a qualifi ed 

person.

°F/°C

GRID

ENABLED

ENERGY STANDARD VACATION

SMART

ALERT

Alert Icon

Error Code
18

*These instructions are brief and intended as guidance for a qualifi ed person. If you lack the necessary

skills to perform these procedures call 1-877-817-6750 for assistance.

(ESM) ERROR CODE INDICATES CORRECTIVE ACTION*

 E51 with an alert Icon flashing. A failure to communicate with the Electronic 

Thermostat (ET).

1. Turn off electrical power at the breaker, check all electrical connections,

 and wiring for damage. 

2. Replace the Electronic Thermostat (ET).

3. Turn on electrical power at breaker.

 E52 with an alert Icon flashing. Energy Smart® Module (ESM) is receiving the 

wrong data from the Electronic Thermostat 

(ET).

1. Turn off electrical power at the breaker, check all electrical connections,

 and wiring for damage.

2. Replace the Energy Smart® Module (ESM), if this does not correct the

 problem, also replace Electronic Thermostat (ET).

 E71 with an alert Icon flashing. Energy Smart® Module (ESM) thermistor 

failure.

1. Turn off electrical power at the breaker, check all electrical connections,

 and wiring for damage.

2. Turn on electrical power at breaker.

3. If error returns call service technician for assistance.
19

*These instructions are brief and intended as guidance for a qualifi ed person. If you lack the necessary

skills to perform these procedures call 1-877-817-6750 for assistance.

Diagnostic Code Chart Electronic Thermostat (ET)

(ESM)

ERROR CODE

(ET)

DIAGNOSTIC LED

INDICATES CORRECTIVE ACTION*

LIGHT ON

(Green Flash)

Normal operation. None

NO LIGHT No electrical power to control board

or diagnostic LED light burned out.

1. Check for blown fuses or tripped breaker.

2. If diagnostic LED light is burned out, replace Electronic Thermostat 

 (ET).

E01 1 FLASH

(Red)

Dry-fire, electrical power on with the 

tank not completely full of water.

1. Turn off electrical power at breaker, add water. 

2. Turn on electrical power at breaker.

3. See “Water Heater Start-Up” on page 10.

E02 2 FLASHES

(Red)

Water temperature exceeded high 

limit.

1. Turn off electrical power at the breaker.

2. Press the reset button (see Figure 10A).

3. Turn on electrical power at breaker.

4. If error returns call a service technician for assistance.

E03 3 FLASHES

(Red)

Upper thermistor sensor failure.

(Note: Upper thermistor sensor is

part of the ET)

1. Turn off electrical power at the breaker.

2. Replace Electronic Thermostat (ET).

3. Turn on electrical power at breaker.

E04 4 FLASHES

(Red)

Upper element circuit failure.

(Note: Lower element is still operable)

1. Turn off electrical power at the breaker.

2. Check element circuits for resistance of 5-25 ohms (replace if required).

3. Check wires at elements and Electronic Thermostat (ET) for damage. 

 If this 4 flashes condition continues, replace Electronic Thermostat (ET).

4. Turn on electrical power at breaker. 

E05 5 FLASHES

(Red)

Lower element circuit failure.

(Note: Upper element is still operable)

1. Turn off electrical power at the breaker.

2. Check element circuits for resistance of 5-25 ohms (replace if required).

3. Check wires at elements and Electronic Thermostat (ET) for damage.

 If this 5 flashes condition continues, replace Electronic Thermostat (ET).

4. Turn on electrical power at breaker.

E06 6 FLASHES

(Red)

Electronic Thermostat (ET) failure

(Internal processor).

1. Turn off electrical power at the breaker. Now turn on electrical power to 

 see if error clears. If error has not cleared, replace Electronic Thermo-

 stat (ET).

2. Turn on electrical power at breaker.

E07 7 FLASHES

(Red)

Lower thermistor sensor failure. 1. Turn off electrical power at the breaker.

2. Check electrical connections at Electronic Thermostat (ET).

3. Replace Lower Thermistor Sensor.

4. Turn on electrical power at breaker.

E08 8 FLASHES

(Red)

Energy Smart® Interface 

Module(ESM) failure.

1. Turn off electrical power. 

2. Check wires at the interface module for damage.

3. If this 8 flashes condition continues, replace module (ESM).

4. See “Overriding The Interface Module (ESM)” by unplugging from the 

 Electronic Thermostat (ET) on page 12. NOTE: Electronic Thermostat 

 (ET) will continue to be operate, hot water will still be available.

5. Turn on electrical power at breaker.

Setpoint

Knob

Diagnostic

LED Light

Plastic Guard

Electrical Shock Hazard

Do not remove the plactic

guard from over wiring.

Do not touch electrical wiring.

Failure to do so can result in 

death or electrical shock.

IMPORTANT: Before attempting to adjust the thermostat, read the “Water Temperature Regulation” 

section page 10. 

The Electronic Thermostat (ET) is designed so 

that it may control the water heater without the 

Energy Smart® Module (ESM) being operated, 

see page 12.

If the instructions are not clear, contact a qualifi ed 

person.
20

*These instructions are brief and intended as guidance for a qualifi ed person. If you lack the necessary

skills to perform these procedures call 1-877-817-6750 for assistance.

(ESM)

ERROR CODE

(ET)

DIAGNOSTIC LED

INDICATES CORRECTIVE ACTION*

E9

E10

E11

E12

9, 10, 11 or 12 FLASHES

(Red)

Electronic Thermostat (ET) error 1. Turn off electrical power. 

2. Check wiring at Electronic Thermostat (ET) for damage.

3. Turn on electrical power at breaker.

4. If this code flashes condition continues, replace the Electronic 

 Thermostat (ET).
21

Troubleshooting Chart

PROBLEM POSSIBLE CAUSE(S) CORRECTIVE ACTION*

NO HOT WATER 1. No power to heater.

2. High temperature limit shut-down.

3. Defective sensor.

1. Refer to “E02” of Diagnostic Code Chart- page 17.

2. Refer to “E03 or E07” of Diagnostic Code Chart- page 17.

3. Refer to “No Light” of Diagnostic Code Chart- page 19.

INSUFFICIENT HOT WATER 1. Defective lower element.

2. Temperature set too low.

3. Sediment or lime in tank.

4. Defective Dip Tube.

5. Heater too small for job.

6. Wrong piping connections.

7. Leaking faucets and/or plumbing

 system.

8. Wasted hot water.

9. Long runs of exposed pipe.

10.Hot water piping on outside wall.

1. Refer to “E05” of Diagnostic Code Chart- page 17.

2. Set temperature to desired setting.

3. Drain, determine if water treatment is needed.

4. Replace Dip Tube.

5. Check and Install adequate water heater.

6. Correct piping.

7. Repair faucets and any leaks in the plumbing system.

8. Reduce hot water usage.

9. Insulate piping.

10.Insulate piping.

HIGH OPERATION COSTS 1. Temperature set too high.

2. Sediment or lime in tank.

3. Heater too small for job.

4. Leaking faucets and/or plumbing

 system.

5. Wasted hot water.

6. Long runs of exposed piping.

7. Hot water piping in exposed wall.

8. Elements covered with sediment or

 lime.

1. Lower temperature control or change to Energy Smart® Mode.

2. Drain, Flush-Provide water treatment if needed.

3. Install adequate heater.

4. Repair faucets and any leaks in the plumbing system.

5. Advise customer.

6. Insulate piping.

7. Insulate piping.

8. Replace elements.

SLOW HOT WATER RECOVERY 1. Upper element defective.

2. Leaking faucets and/or plumbing

 system.

1. Refer to “E04” of Diagnostic Code Chart- page 17.

2. Repair faucets and any leaks in the plumbing system.

DRIP FROM T&P VALVE 1. Excessive water pressure.

2. Closed system.

3. Defective T&P valve.

1. Use pressure reducing valve and pressure relief valve (See 

 page 6).

2. See page 6, “Closed System/Thermal Expansion”.

3. Replace T&P valve.

WATER ODOR 1. Sulfides in the water. 1. See page 14, “Anode Rod/Water Odor”.

*These instructions are brief and intended as guidance for a qualifi ed person. If you lack the necessary

skills to perform these procedures call 1-877-817-6750 for assistance.
22

REPAIR PARTS ILLUSTRATION

1

2

3

4

5

6

3

7

8

10

11

12

13

9

10

11

14

15

Repair Parts

Repair parts may be ordered through your plumber,

local distributor, home improvement center, or by calling

1-877-817-6750. When ordering repair parts, always

give the following information:

1. Model, serial and product number

2. Item number

3. Parts description

 Repair Parts List

 Legend

 Special anode rod (See page 14)

 Temperature and Pressure Relief Valve is required, but may not 

 be factory installed.

 Specify element type when ordering.

PARTS DESCRIPTION

 1 ENERGY SMART MODULE (ESM) W/ WIRING HARNESS

 2 UPPER ELEMENT

 3 ELEMENT GASKET

 4 ELECTRONIC THERMOSTAT (ET)

 5 ACCESS DOOR

 6 LOWER ELEMENT

 7 DRAIN VALVE

 8 TEMPERATURE AND PRESSURE RELIEF VALVE

 9 JUNCTION BOX COVER

 10 NIPPLE

 11 HEAT TRAP

 12 DIP TUBE

 13 ANODE ROD

 14 THERMISTOR SENSOR

 15 SMART GRID WIRE HARNESS ASSEMBLY

ITEM

 No.
23

ELECTRONIC 

THERMOSTAT (ET)

FUSED DISCONNECT

OR CIRCUIT BREAKER

L 1 L 3

L 4

T 4

T 2

TEMPERATURE

SENSOR

UPPER

ELEMENT

LOWER

ELEMENT

319165-000G

ENERGY SMART

MODULE (ESM)

GROUND

SCREW

ELECTRICAL

SERVICE

GROUND

RED

BLACK

BLUE

BLUE

BLACK

YELLOW

ON

BRACKET

ON

JUNCTION

BOX COVER

BLACK - 5 WIRES BLACK - 2 WIRES

120

V

1500*

2000

2500

3000

3500

4000

4500

5000

5500

15

20

30

30

-

-

-

-

-

WATT

LOAD

BRANCH CIRCUIT SIZING GUIDE

Based on N.E.C. NFPA NO. 70 - 1999

15

15

15

20

20

25

30

30

15

15

15

15

20

20

25

30

30

208

V

240

V

Recommend

Over Current

Protection Rating

12

10

10

8

-

-

-

-

-

14

14

14

12

10

10

10

10

14

14

14

12

12

10

10

10

10

120

V

208

V

240

V

Copper Wire Size

AWG Based on 

N.E.C.

Table 310 - 16 C)

Wattages less than 1500 may be wired 14 gage with a maximum

15 amp protection.

SMART GRID

WIRE HARNESS

GREEN

RED BLACK

THERMOSTAT WIRING DIAGRAM
24

® Registered trademark/TM trademark of Whirlpool, U.S.A.

© 2011 Whirlpool Corporation. All rights reserved.

Energy Smart ® is a trademark of American Water Heater Company

Manufactured under license by American Water Heater Company, Tennessee.

Warranty provided by manufacturer.