2.3. Error Code
exhaust temperature sensor failure
evaporator coil temperature sensor failure
Gas return temperature sensor failure
return water temperature sensor failure
water outlet temperature sensor failure
ambient temperature sensor failure
water flow switch failure
controller PCB and inverter driver communication failure
Controller PCB EEPROM failure
inverter driver EEPROM failure
high/low pressure protection
exhaust temperature too high protection
temperature difference too big between water inlet and outlet
supercooling protection at cooling mode
compressor overcurrent protection
ambient temperature protection
water outlet temperature too high protection
evaporator coil temperature too high when cooling
compressor driver failure
IPM module too hot protection
heat pump current too big
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