Patent ID: 11906223
Assignee: RHEEM MANUFACTURING COMPANY
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F | IPC F

Claim 9:
10. A method of determining a fault in a system comprising an outdoor unit and an indoor unit in fluid communication via a refrigerant circuit, the method comprising:
receiving, from a sensor, vibration data, the vibration data being indicative of one or more sounds or vibrations detected via a portion of the refrigerant circuit;
identifying, based at least in part on the vibration data and stored baseline vibration data, an abnormality in the vibration data, wherein the abnormality is indicated by vibration data indicative of a frequency that is outside of a predetermined range of acceptable frequencies;
determining a difference between the frequency of the identified abnormality and the predetermined range of acceptable frequencies;
if the difference is greater than a first threshold, determining the fault will occur in an estimated amount of time; and
if the difference is greater than a second threshold, the second threshold being greater than the first threshold, determining the fault is occurring or has occurred.