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Haier Air Conditioner Error Codes
65 error codes for Haier air conditioner models. Each links to the full diagnostic procedure from the service manual.
CodeDescription
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 currentMyPros+ Max
Get the full diagnostic procedure for any Haier air conditioner error code.
- Step-by-step tests with expected resistance, voltage, and continuity values
- Wiring diagram references and connector pinouts
- Verified part numbers when replacement is required
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E12Broken CT wireE13Low voltage inputE14Overload or high restrictionsE15Indoor motor warningE2Faulty indoor thermistorE3Faulty EEPROME4Defrosting temperature sensor in short or broken circuit (Power ON, Timing ON…E5Compressor discharge temperature sensor in short or broken circuit (Power…E6Thermistor on wiring board in short circuit (Power ON, Timing blinking, Running…E7Poor communication between indoor and outdoor units (Power OFF, Timing OFF…E8Multimeter negative generator grounding (CF) fault or indoor PCB / control…E9Overheating discharge pipeF1IPM (Intelligent Power Module) protection due to overcurrent, compressor fault…F11Outdoor unit protection error triggered after approximately 5 minutes of…F12Outdoor EEPROM error caused by faulty EEPROM data, faulty EEPROM, or faulty PCBF19Communication fault between the IPM module and outdoor PCB due to broken…F2Overcurrent of the compressor detected when IPM module or compressor is…F21Defrost temperature sensor failure (outdoor)F22Overcurrent protection of AC electricity for the outdoor model (LED1 flash 3…F23Overcurrent protection for single-phase of the compressor (LED1 flash 25 times).F25Discharge temperature sensor failure (outdoor)F28Loop of the station detect error (inverter side current detection abnormal).F3Communication fault between the IPM and outdoor PCB (LED1 flash 4 times).F4Overheat protection for discharge temperatureF6Ambient temperature sensor failure (outdoor)F7Suction temperature sensor failure (outdoor)F8Outdoor DC fan motor fault detected by checking fan running condition.Power■ Timer■ Running★Transmission abnormityPower■ Timer★ Running■Overhigh discharging temperature protectionPower■ Timer★ Running□Insufficient current protection (low-voltage protection).Power■ Timer★ Running★Outdoor control board temperature protectionPower□ Timer■ Running★Abnormity of control board thermistor.Power□ Timer□ Running★Abnormity of defrosting thermistor.Power□ Timer★ Running■Abnormity of outdoor thermistor.Power□ Timer★ Running□Abnormity of module thermistor.Power□ Timer★ Running★Module temperature rising protection.Power★ Timer■ Running■Abnormity of indoor thermistorPower★ Timer■ Running□Compressor running abnormity.Power★ Timer■ Running★CT wiring disconnected protection.Power★ Timer□ Running■Abnormity of discharging thermistor.Power★ Timer□ Running□Abnormity of thermal conversion thermistor (indoor coil pipe temperature sensor…Power★ Timer□ Running★EEPROM abnormityPower★ Timer★ Running■AC current protection.Power★ Timer★ Running□DC current protectionPower★ Timer★ Running★High-load protection