Error Codes

IDU Error Code List

Error Code Explanation Resolvent
E0 IDU overcurrent protection Indoor motor or indoor controller
E1 IDU room sensor error Internal display board or internal motherboard
E2 ODU condenser sensor Internal main board
E3 IDU evaporator coil sensor error Outdoor motor or PCB
E4 AC or DC motor error Module or adjust power supply phase sequence
E5 ODU and IDU communication error Internal and external power cord or internal and external controller
E8 Communication fault between display board and PCB board Internal display board or internal motherboard
Eb IDU PCB EE error Internal main board
F0 ODU fan motor error Outdoor motor or PCB
F1 ODU Module protection error Module or adjust power supply phase sequence
F2 ODU PFC Protection Error Controller/compressor/compressor exhaust sensor
F3 Compressor start failure or out-of-step Error Compressor
F4 ODU discharge sensor error Compressor discharge sensor
F6 ODU room sensor error Outdoor environment sensor
F8 ODU communication error between main PCB board and module board Outdoor module communication
F9 ODU PCB EE error Outdoor controller
FA Suction sensor error Return air sensor fault
Fb IDU DC motor error (Floor standing) IDU DC motor error
P2 High-pressure switch protection Pressure switch or outdoor controller
P3 Lack of refrigerant protection Lack of refrigerant
P4 Condenser overload protection (Cooling mode) Condenser or temperature sensor
P5 Discharge temperature protection Compressor or temperature control sensor
P6 Evaporator overload protection (Heating mode) Controller or temperature sensor
P7 IDU anti-freezing protection (Cooling mode) Temperature sensor
P8 ODU overcurrent protection External controller

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