37MUHA Fault Code EL 01 – Indoor and Outdoor Unit Communication Error
The indoor unit cannot communicate with the outdoor unit.
37MUHA Fault Code EL 01 – Indoor and Outdoor Unit Communication Error Read More »
37MUHA Fault Codes EH 00, EH 0A, EC 51 – EEPROM Malfunction
The indoor or outdoor PCB main chip does not receive feedback from the EEPROM chip.
37MUHA Fault Codes EH 00, EH 0A, EC 51 – EEPROM Malfunction Read More »
37MUHA Fault Codes PC 08, PC 42, PC 44, PC 46, PC 49 – Compressor Current and Speed Protection
The outdoor unit has detected abnormal compressor current, starting, or speed.
37MUHA Fault Code PC 06 – Compressor Discharge Temperature Protection
Compressor discharge temperature protection is active.
37MUHA Fault Code PC 06 – Compressor Discharge Temperature Protection Read More »
37MUHA Fault Code PC 45 – ODU IR Chip Drive Failure
The inverter module IR chip has detected an internal parameter error.
37MUHA Fault Code PC 45 – ODU IR Chip Drive Failure Read More »
37MUHA Fault Code PC 43 – ODU Compressor Phase Loss Protection
One or more compressor phase currents are abnormally low.
37MUHA Fault Code PC 43 – ODU Compressor Phase Loss Protection Read More »
37MUHA Fault Code PC 41 – Compressor Current Sampling Circuit Failure
The outdoor compressor current sampling circuit has an abnormal offset voltage.
37MUHA Fault Code PC 41 – Compressor Current Sampling Circuit Failure Read More »
37MUHA Fault Code PC 40 – ODU Main Chip and Compressor Drive Communication Error
The outdoor main PCB cannot detect the IPM board.
37MUHA Fault Code PC 40 – ODU Main Chip and Compressor Drive Communication Error Read More »
37MUHA Fault Codes PC 10, PC 11, PC 12 – ODU Voltage Protection
The outdoor unit detects an abnormal AC input or DC bus voltage.
37MUHA Fault Codes PC 10, PC 11, PC 12 – ODU Voltage Protection Read More »
37MUHA Fault Code PC 00 – ODU IPM Module Protection
The compressor drive receives an abnormal IPM signal.
37MUHA Fault Code PC 00 – ODU IPM Module Protection Read More »