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Error code reference
Haier Air Conditioner Error Codes
48 error codes documented with diagnostic procedures.
Have your model number? Get codes specific to your unit.
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 due to overcurrent, compressor fault, broken…F11Outdoor unit protection error triggered after approximately 5 minutes of operation…F12Outdoor EEPROM error caused by faulty EEPROM data, faulty EEPROM, or faulty PCBF19Communication fault between the IPM module and outdoor PCB due to broken outdoor PCB…F2Overcurrent of the compressor detected when IPM module or compressor is damaged, or…F21Defrost temperature sensor failure (outdoor)F22Overcurrent protection of AC electricity for the outdoor model (LED1 flash 3 times).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 abnormity
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Common questions
How do I find the error code on my Haier Air Conditioner?
Most Haier air conditioners show the code directly on the control panel display. If your model has no display, it can be read by entering diagnostic mode with the key sequence for your model. The full procedures include model-specific instructions for reading codes.
Are these codes specific to my model?
The codes here apply broadly to Haier air conditioners. Meanings and diagnostic steps can vary by model and production year, so enter your model number for model-specific information and procedures.
What do I do if my code is not listed?
Some codes are model-specific or only appear in diagnostic mode. Enter your model number to get codes specific to your unit, or contact us. We update the database continuously from manufacturer service documentation.
How much does it cost to access the full diagnostic procedures?
A 3-day pass is $9.95 one-time and gives full access to all brands, codes, and procedures. Monthly access is $29/month with unlimited access to everything including Max AI diagnostics.