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Error code reference
Haier Air Conditioner Error Codes
48 error codes documented with diagnostic procedures.
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1Outdoor temperature sensor abnormity10IPDU abnormity11IPDU abnormity12IPDU abnormity13IPDU abnormity14IPDU abnormity15IPDU abnormity16IPDU abnormity17IPDU abnormity2Outdoor defrosting sensor abnormity3Compressor discharge temperature abnormity4High compressor discharge temperature5Indoor-outdoor communication abnormity6Abnormal communication to IPDU module7E2PROM data abnormity8IPDU abnormity9IPDU abnormityE1Faulty indoor thermistorE10High AC currentE11High DC currentE12Broken CT wireE13Low voltage inputE14Overload or high restrictionsE15Indoor motor warningE2Faulty indoor thermistorE3Faulty EEPROME4Defrosting temperature sensor in short or broken circuit (Power ON, Timing ON, Running…E5Compressor discharge temperature sensor in short or broken circuit (Power blinking…E6Thermistor on wiring board in short circuit (Power ON, Timing blinking, Running ON)E7Poor communication between indoor and outdoor units (Power OFF, Timing OFF, Running…E8Multimeter negative generator grounding (CF) fault or indoor PCB / control board…E9Overheating discharge pipeF1IPM (Intelligent Power Module) protection detected by checking compressor running…F11Outdoor unit protection error triggered after approximately 5 minutes of operation…F12Outdoor EEPROM errorF19Overheat protection for discharge temperature, activated when compressor discharge…F2Overcurrent of the compressor detected when IPM module or compressor is damaged, or…F21Defrost temperature sensor failure (outdoor), indicated by outdoor LED1 flashing 10 times.F22Overcurrent protection of AC electricity for the outdoor model (outdoor LED1 flash 3…F23Overcurrent protection for single-phase of the compressor (outdoor LED1 flash 25 times).F25Discharge temperature sensor failure (outdoor), indicated by outdoor LED1 flashing 13…F28Loop of the station detect error / inverter side current detection abnormal.F3Communication fault between the IPM and outdoor PCB (outdoor LED1 flash 4 times).F4Overheat protection for exhaust (discharge) temperatureF6Ambient temperature sensor failure (outdoor), indicated by outdoor LED1 flashing 12 times.F7Suction temperature sensor failure (outdoor), indicated by outdoor LED1 flashing 11 times.F8Outdoor DC fan motor fault detected by checking the fan running condition.Power★ Timer■ Running■Abnormity of indoor thermistor
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