37MUHA Fault Code EH 0E – Water-Level Alarm Malfunction
The water-level alarm circuit returns an abnormal signal.
37MUHA Fault Code EH 0E – Water-Level Alarm Malfunction Read More »
37MUHA Fault Code EL 0C – System Lacks Refrigerant
Operating parameters indicate insufficient refrigerant.
37MUHA Fault Code EL 0C – System Lacks Refrigerant Read More »
37MUHA Fault Code EC 55 – ODU IPM Module Temperature Sensor Malfunction
The IPM module temperature sensor sampling voltage is abnormal.
37MUHA Fault Code EC 55 – ODU IPM Module Temperature Sensor Malfunction Read More »
37MUHA Fault Code EC 72 – Outdoor DC Fan Motor Phase Loss
The outdoor DC fan motor has abnormal three-phase sampling current.
37MUHA Fault Code EC 72 – Outdoor DC Fan Motor Phase Loss Read More »
37MUHA Fault Code EC 5C – Suction Transducer Open or Short Circuit
The suction transducer sampling voltage is outside its expected range.
37MUHA Fault Code EC 5C – Suction Transducer Open or Short Circuit Read More »
37MUHA Fault Codes EH 03, EC 07, EC 71 – Fan Speed Outside Normal Range
Indoor or outdoor fan speed remains too low or too high for a specified time.
37MUHA Fault Codes EH 03, EC 07, EC 71 – Fan Speed Outside Normal Range Read More »
37MUHA Fault Code EH 02 – Zero Crossing Detection Error
The PCB does not receive normal zero-crossing signal feedback.
37MUHA Fault Code EH 02 – Zero Crossing Detection Error Read More »
37MUHA Component Check – Electronic Expansion Valve (EXV)
Applies to: EXV Check, Electronic Expansion Valve Check
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37MUHA Component Check – 4-Way Valve
Applies to: 4-Way Valve Check, Reversing Valve Check
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