Haier air conditioners are rather popular now. It means that a lot of customers get them today. Anyway, when they buy the air conditioners, they tend not to think of possible faults in its work. If it happen to you, don’t worry too much and try to repair it yourself. You won’t be alone in this business, because our troubleshooting manual will guide you through. Get ready for some productive work!
Haier HDU-24CA03M Air Conditioner Fault Codes
| Error | Fault Description | Fault unit |
|---|
| E1 | Room temperature sensor fault | Indoor unit |
| E2 | Heat-exchange sensor fault |
| E4 | Indoor EEPROM error |
| E9 | High work-intense protection | Outdoor unit |
| E7 | Communication fault | Indoor unit |
| F12 | Outdoor EEPROM fault | Outdoor unit |
| E14 | Indoor fan motor malfunction | Indoor unit |
| F1 | The protection error of IPM | Outdoor unit |
| F2 | Overcurrent of the compressor |
| F3 | Communication fault between the IPM and outdoor PCB |
| F4 | Overheat protection error of exhaust temperature sensor |
| F6 | Ambient temperature sensor failure |
| F7 | Suction temperature sensor fault |
| F11 | deviate from the normal for the compressor |
| F19 | Power voltage too high or too low |
| F21 | Defrost temperature sensor fault |
| F22 | Overcurrent protection of AC electricity for the outdoor model |
| F23 | Overcurrent protection for single-phase of the compressor |
| F25 | Discharge temperature sensor fault |
| F28 | Loop of the station detect error |
| F66 | Ambient temperature sensor fault | |
Haier HDU-36CA03 Air Conditioner Fault Codes
| Operate Malfunction codes | Heat Malfunction codes | Cool Malfunction codes | Indoor Unit | Outdoor Unit | Auto Recover | Twinkling times of outdoor LED 2 | Content |
|---|
| ☼ | ☼ | * | | * | | Room-temperature sensor malfunction |
| | | * | | * | | Heat-exchange thermister anomaly |
| | | | * | * | 2 | Defrosting temperature sensor fault |
| | ☼ | | * | * | 3 | Exhaust temperature sensor |
| | ☼ | | * | * | 1 | Ambient temp sensor fault |
| ☼ | | | * | | | | Indoor fan motor malfunction |
Haier 12HVA103 Air Conditioner Fault Codes
| Error | Unit | Description |
|---|
| E1: | Indoor display | Room temperature sensor failure |
| E2: | Heat-exchange sensor failure |
| LED1 flash 10 times: | Outdoor display | Defrost temperature sensor failure |
| LED1 flash 11 times: | Suction temperature sensor failure |
| LED1 flash 12 times: | Ambient temperature sensor failure |
| LED1 flash 13 times: |
Haier HSU12VHGL-W Air Conditioner Fault Codes
| Indoor displaying panel code indication | Outdoor (LED1 flash times) | fault description |
|---|
| E7 | 15 | Communication fault between indoor and outdoor units |
| E1 | - | Room temperature sensor failure |
| E2 | - | Heat-exchange sensor failure |
| E4 | - | Indoor EEPROM error |
| E14 | - | Indoor fan motor malfunction |
| F12 | 1 | Outdoor EEPROM error |
| F1 | 2 | The protection of I PM |
| F22 | 3 | Overcurrent protection of AC electricity for the outdoor model |
| F3 | 4 | Communication fault between the IPM and outdoor PCB |
| F19 | 6 | Power voltage is too high or low |
| F27 | 7 | Compressor is lock-rotor or stopped momentary |
| F4 | 8 | Overheat protection for Discharge temperature |
| F8 | 9 | Outdoor DC fan motor fault |
| F21 | 10 | Defrost temperature sensor failure |
| F7 | 11 | Suction temperature sensor failure |
| F6 | 12 | Ambient temperature sensor failure |
| F25 | 13 | Discharge temperature sensor failure |
| F13 | 16 | Short of refrigerant |
| F11 | 18 | deviate from the normal for the compressor |
| F28 | 19 | Loop of the station detect error |
| / | 21 | Over load protection of indoor system |
| F2 | 24 | Overcurrent of the compressor |
| F23 | 25 | Overcurrent protection for single-phase of the compressor |
| E9 | 21 | High work-intense protection |
Haier HDU-42CA03 Air Conditioner Fault Codes
| Error | Solution |
|---|
| E0 | Condensate drain violation |
| E1 | The compressor is pressurized |
| E2 | The internal module heat exchanger was covered with ice |
| E3 | Not enough pressure in the compressor |
| E4 | Overheating of the compressor |
| E5 | Compressor is disconnected due to increased load |
| E6 | No communication between units |
| E7 | The internal module does not respond to commands from the remote control |
| E8 | Overload of the internal module motor |
| F0 | The temperature sensor in the room has disconnected |
| F1 | The internal module heat exchanger heat exchanger is turned off |
| F2 | The heat exchanger of the external module |
| F3 | The outdoor thermal sensor |
| F4 | The air flow sensor is off |
| FF | Supply failure |
Haier HDU-24CA03 Air Conditioner Fault Codes
| Fault Code | Description/Reason | Solutions |
|---|
| E0 | Indicates incoming power issues, such as a low voltage condition or excessive power consumption. | Unplug the unit for 10 minutes. Service may be required |
| E1 | Indicates a stuck button on the front panel key pad. | Unplug unit and press each button firmly to reset the switches. Then, plug the unit back into the power supply. Service may be required |
| E4 | Unit has a tank built-in that must be emptied periodically. E4 indicates the tank float is stuck. | Open the water tank and verify no debris is blocking the operation of the float. |
| STOP | Unit has a tank built-in that must be emptied periodically. STOP indicates the tank must be emptied or tank float is stuck. Unit will not run while STOP appears. | Empty the tank. Open the water reservoir and verify no debris is blocking the operation of the float. |
| High Temp | Appears when ambient room temperature is over 99 degrees F. | If the ambient temperature is not above 99F, then service may be required. |
