Haier Air Conditioner Error Codes 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!
Error and fault codes help a technician diagnose issues with the portable air conditioner. If the unit is displaying an error, check the charts below for possible error code resolutions:
Haier Air Conditioner Error Code Solutions
Failure code for wall mounted unit – Displayed on the indoor LCD:
| Error Code | Description | Remark |
|---|---|---|
| E1 | Indoor room temperature sensor failure | Indoor room temp. sensor in short circuit, or open circuit, it can resume due to the signal. |
| E2 | Indoor coil temperature sensor failure | Indoor coil temp. sensor in short circuit, or open circuit, it can resume due to the signal. |
| E4 | EEPROM wrong | Being electrified to test E2 check sum, or E2 is broken down. |
| E7 | Communication failure between indoor and outdoor | Communication failure alarms for 4 minutes contineously, it can resume due to the signal. |
| E14 | Indoor fan motor failure | Indoor fan motor wrong wiring or indoor fan motor abnormal. |
| E18 | Temperature cutoff protection | Outdoor 4-way valve response abnormal. |
| F1 | Module failure | Outdoor module abnormal |
| F2 | Outdoor DC motor failure | Outdoor DC motor abnormal |
| F4 | Compressor overheat / discharging temperature protection | Compressor discharging temperature over high protection |
| F5 | Module over current / current transducer failure | |
| F6 | Outdoor ambient temp. sensor abnormal | Outdoor ambient temp. sensor in short current or open circuit |
| F7 | Outdoor suction/defrosting temp. sensor abnormal | Outdoor suction/defrosting temp. sensor in short circuit or open circuit |
| F8 | High pressure abnormal | High pressure too high |
| F9 | Low pressure abnormal | Low pressure abnormal |
| F10 | No AC power supply | |
| F11 | Outdoor PCB EEPROM abnormal | Being electrified to test if the E2 check sum is correct or failure |
| F13 | Communication failure between outdoor PCB and module | |
| F14 | Compressor discharging temp. sensor failure | Outdoor compressor discharging temp. sensor in short circuit or open circuit |
| F15 | Compressor running faulty | Resumable |
| F16 | Running state-detecting circuit failure | Outdoor DC compressor running state-detecting circuit failure, or compressor abnormal, resumable |
Model: HDU-24CA03/M(R1) HDU-28CA03/M(R1) HDU-36CA03/M(R1) HDU-42CA03/M(R1)
Model: HSU-09/12HVA103/R2(DB)FOR Eorope
Error Code: E1
Fault Description: Room temperature sensor fault
Remark: Indoor room temp. sensor in short circuit, or open circuit, it can resume due to the signal.
Error Code: E2
Fault Description: Heat-exchange sensor fault
Remark: Indoor coil temp. sensor in short circuit, or open circuit, it can resume due to the signal.
Error Code: E4
Fault Description: Indoor EEPROM error
Remark: Being electrified to test E2 check sum, or E2 is broken down.
Error Code: E9
Fault Description: High work-intense protection
Fault unit: Outdoor unit
Error Code: E7
Fault Description: Communication failure between indoor and outdoor
Remark: Communication failure alarms for 4 minutes contineously, it can resume due to the signal.
Error Code: EC
Fault Description: Refrigerant Leakage
Error Code: F12
Fault Description: Outdoor EEPROM fault
Fault unit: Outdoor unit
Error Code: E14
Fault Description: Indoor fan motor malfunction
Remark: Indoor fan motor wrong wiring or indoor fan motor abnormal.
Error Code: F1
Fault Description: The protection error of IPM
Remark: Outdoor module abnormal
Error Code: F2
Fault Description: Overcurrent of the compressor
Remark: Outdoor DC motor abnormal
Error Code: F3
Fault Description: Communication fault between the IPM and outdoor PCB
Fault unit: Outdoor unit
Error Code: F4
Fault Description: Overheat protection error of exhaust temperature sensor
Remark: Compressor discharging temperature over high protection
Error Code: F6
Fault Description: Ambient temperature sensor failure
Remark: Outdoor ambient temp. sensor in short current or open circuit
Error Code: F7
Fault Description: Suction temperature sensor fault
Remark: Outdoor suction/defrosting temp. sensor in short circuit or open circuit
Error Code: F11
Fault Description: deviate from the normal for the compressor
Remark: Being electrified to test if the E2 check sum is correct or failure
Error Code: F19
Fault Description: Power voltage too high or too low
Fault unit: Outdoor unit
Error Code: F21
Fault Description: Defrost temperature sensor fault
Fault unit: Outdoor unit
Error Code: F22
Fault Description: Overcurrent protection of AC electricity for the outdoor model
Fault unit: Outdoor unit
Error Code: F23
Fault Description: Overcurrent protection for single-phase of the compressor
Fault unit: Outdoor unit
Error Code: F25
Fault Description: Discharge temperature sensor fault
Fault unit: Outdoor unit
Error Code: F28
Fault Description: Loop of the station detect error
Fault unit: Outdoor unit
Error Code: F66
Fault Description: Ambient temperature sensor fault
Code: E0
Flash time of compressor running indicate lamp: 10
Trouble contents (old): drainage system trouble
Trouble contents (new): drainage system trouble
Code: E1
Flash time of compressor running indicate lamp: 1
Trouble contents (old): indoor temperature sensor broken
Trouble contents (new): indoor temperature sensor broken
Code: E2
Flash time of compressor running indicate lamp: 2
Trouble contents (old): indoor coil temperature sensor broken
Trouble contents (new): indoor coil temperature sensor broken
Code: E3
Flash time of compressor running indicate lamp: 3
Trouble contents (old): outdoor temperature sensor broken
Trouble contents (new): outdoor temperature sensor broken
Code: E4
Flash time of compressor running indicate lamp: 4
Trouble contents (old): outdoor coil temperature sensor broken
Trouble contents (new): outdoor coil temperature sensor broken
Code: E5
Flash time of compressor running indicate lamp: 5
Trouble contents (old): over current protect limit
Trouble contents (new): over current protect limit
Code: E6
Flash time of compressor running indicate lamp: 6
Trouble contents (old): pressure protect
Trouble contents (new): pressure protect
Code: E7
Flash time of compressor running indicate lamp: 7
Trouble contents (old): communication trouble between wired remote controller and indoor unit.
Trouble contents (new): three phase protect
Code: E8
Flash time of compressor running indicate lamp: 8
Trouble contents (old): Communication trouble between indoor and outdoor unit.
Trouble contents (new): Communication trouble between wired remote controller and indoor unit
Code: E9
Flash time of compressor running indicate lamp: 9
Trouble contents (old): three phase protect
Trouble contents (new): communication trouble between indoor and outdoor unit
HSU-09/12HVA103/R2(DB) For Europe Models:
Error Codes and Description indoor and outdoor display
Indoor and Outdoor: E7
Description: Communication fault between indoor and outdoor units
Indoor Malfunction: E1
Description: Room temperature sensor failure
Indoor Malfunction: E2
Description: Heat-exchange sensor failure
Indoor Malfunction: E4
Description: Indoor EEPROM error
Indoor Malfunction: E14
Description: Indoor fan motor malfunction
Indoor Malfunction: E9
Description: High work-E9 intense protection
Error Codes and Description indoor and outdoor display:
Indoor: F12
Outdoor (LED1 flash times): 1
Description: Outdoor EEPROM error
Indoor: F11
Outdoor (LED1 flash times): 2
Description: The protection of IPM
Indoor: F22
Outdoor (LED1 flash times): 3
Description: Over current protection of AC electricity for the outdoor model
Indoor: F11
Outdoor (LED1 flash times) = 4
Description = Communication fault between the IPM and outdoor PCB
Indoor: F11
Outdoor (LED1 flash times) = 6
Description = Power voltage is too high or low
Indoor: F4
Outdoor (LED1 flash times) = 8
Description = Overheat protection for exhaust temperature
Indoor: F21
Outdoor (LED1 flash times) = 10
Description = Frost-removing temperature sensor failure
Indoor: F6
Outdoor (LED1 flash times) = 12
Description = Ambient temperature sensor failure
Indoor: F25
Outdoor (LED1 flash times) = 13
Description = Exhaust temperature sensor failure
Indoor: F11
Outdoor (LED1 flash times) = 19
Description = Loop of the station detect error
Haier Commercial Air Conditioning
- Flash times of LED on mainboard: 1
- Trouble description: Eeprom failure
- Analyze and diagnose: Outdoor main board eeprom fail
- Flash times of LED on mainboard: 2
- Trouble description: IPM failure
- Analyze and diagnose: IPM failure
- Flash times of LED on mainboard: 4
- Trouble description: Communication error between main board and spdu module SPDU Communicition error
- Analyze and diagnose: Communication fail over 4 min
- Flash times of LED on mainboard: 5
- Trouble description: High pressure protection
- Analyze and diagnose: System high pressure over 4.15 Mpa
- Flash times of LED on mainboard: 6
- Trouble description: Module over-voltage protection/ Module lack-voltage protection
- Analyze and diagnose: Send from Spdu module
- Flash times of LED on mainboard: 8
- Trouble description: Compressor discharging temperature protection
- Analyze and diagnose: Compressor discharging temperature over 110 centigrade
- Flash times of LED on mainboard: 9
- Trouble description: Abnomal of DC motor
- Analyze and diagnose: jam of DC motor or motor failure
- Flash times of LED on mainboard: 10
- Trouble description: Abnomal of pipe sensor
- Analyze and diagnose: Piping sensor short-circuit or open-circuit
- Flash times of LED on mainboard: 12
- Trouble description: Abnomal of outdoor ambient sensor
- Analyze and diagnose: Outdoor ambient sensor short-circuit or open-circuit
- Flash times of LED on mainboard: 13
- Trouble description: Abnormal of compressor dischage sensor
- Analyze and diagnose: Compressor discharging sensor short-circuit or open-circuit
- Flash times of LED on mainboard: 15
- Trouble description: Communication error between indoor and outdoor unit
- Analyze and diagnose: Communication fail over 4 min
- Flash times of LED on mainboard: 16
- Trouble description: Lack of refrigerant
- Analyze and diagnose: check if there is leakage in the unit
- Flash times of LED on mainboard: 17
- Trouble description: 4-way valve reverse failure
- Analyze and diagnose: Alarm and stop if detect Td-Tci<=15 last for 1min after compressor has started for 10min in heating mode, confirm the failure if it appears 3 times in one hour.
- Flash times of LED on mainboard: 18
- Trouble description: Compressor jam (ony for spdu )
- Analyze and diagnose: Inner compressor is abnormal jamed
- Flash times of LED on mainboard: 19
- Trouble description: Module EEV select circuit error
- Analyze and diagnose: Module EEV select wrong circuit
- Flash times of LED on mainboard: 25
- Trouble description: Compressor U-phase over-current
- Analyze and diagnose: The current of compressor U-phase is too high
- Flash times of LED on mainboard: 25
- Trouble description: Compressor V-phase over-current
- Analyze and diagnose: The current of compressor V-phase is too high
- Flash times of LED on mainboard: 25
- Trouble description: Compressor W-phase over-current
- Analyze and diagnose: The current of compressor W-phase is too high
- Flash times of LED on mainboard: 45
- Trouble description: Low pressure protection
- Analyze and diagnose: System over pressure under 0.05Mpa
Haier Cassette AC Error Codes
The remote receiver can indicate the failure code
Safety Instructions and Warnings:
Before starting the air conditioner, read the information given in the User’s Guide carefully.
The User’s Guide contains very important observations relating to the assembly, operation and maintenance of the air conditioner.
The manufacturer does not accept responsibility for any damages that may arise due to non-observation of the following instruction.
Haier Window Type AC Error Codes
Abnormity Diagnose
- Sensor diagnose: 2 seconds after the sensors open circuit or short circuit, the unit will turn off automatically and the LED will show E0 until the sensors resume.
- Keystroke circuit error diagnose: When power on for the first time, the PCB will check the keystroke circuit, if the sampling value is different with the theory value, the LED will show E1, which means failed keystroke circuit. The keyboard is locked and so invalid, but the remote control is working normally.
Maintenance Service and Trouble Shooting
If air conditioner does not operate:
- Check if unit is plugged in.The plug may have come loose.
- Check if the unit is in “off” mode.
- The fan control may be in “off” position.
Air from air conditioner is warm:
- The A/C setting may need to be raised.
- The temperature outside the room is below 65°F。The conpressor will not cycle on if the temperature outside is below 65°F.
Ice formation on cooling coils:
- Outside temperature too cold .Set the unit on fan only setting to defrose ice.
- Lower temperature setting.Temperature setting may be too cold.
- Unit BTU may be too high for the room
Haier Portable AC Error Codes and Troubleshooting:
| Error Codes | Problem |
|---|---|
| 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. |
Troubleshooting
Problem: Unit does not start or operate
Possible Cause:
- Power supply cord is not plugged into an outlet.
- Power supply cord has tripped.
- The Power button has not been pressed.
- There is no power to the electrical outlet.
- A household fuse has blown or a circuit breaker has tripped.
- The control was programmed for a Time Delay.
- The batteries in the remote control are dead.
- The internal water tank is full.
Solution:
- Plug the power cord into a grounded 3 prong outlet.
- Press and release the RESET button on the power supply cord.
- Press the Power button on the Control Panel or Remote Control to turn ON the air conditioner.
- Plug a working lamp into the outlet to check for power.
- Replace the fuse or reset the circuit breaker.
- Cancel the Time Delay.
- Replace the batteries.
- Empty the water tank.
Problem: Air conditioner is working but the room is not cooling.
Possible Cause:
- The room temperature is hot.
- The control is set incorrectly to Fan or Dehum mode.
- Airflow is restricted.
- Temperature set too high.
- Air filters are dirty or restricted.
- Air conditioner installed incorrectly.
- Doors and windows are open.
Solution:
- Allow time for the room to cool when you first turn on the unit.
- Set the Mode to Cool and the Fan Speed to High.
- Remove any obstacles to the airflow and redirect airflow for uniform cooling.
- Lower the set temperature.
- Clean the air filter.
- Check the exhaust hose and window panel for proper installation.
- Close the doors and windows to the room being cooled to prevent cooled air from escaping.
Problem: Remote control is not working
Possible Cause:
- Batteries are dead.
- Batteries are installed incorrectly.
Solution:
- Replace the batteries.
- Make sure the batteries are inserted in the correct position.