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When a Haier air conditioner stops cooling properly, the code on the indoor display is the fastest way to find out why. This is the complete Haier AC fault code list for Pakistan, with what each code means and whether you can clear it yourself.
What the series mean
Haier uses two main series. E series codes relate mostly to the indoor unit — sensors, the indoor fan and communication. F series codes usually point to the outdoor unit or the system as a whole, including the compressor and inverter module.
Before you start
Switch the unit off and isolate it at the breaker before checking anything. Sensor, board and refrigerant faults need a qualified technician — opening a unit yourself can void the warranty and is dangerous with capacitors still charged.
Haier AC Error Code List #
Haier AC E Series Error Codes #
| Series | Description | Solution |
|---|---|---|
| E1 | Indoor temperature sensor malfunction | Replace the sensor. |
| E2 | Pipe temperature sensor malfunction | Replace the sensor. |
| E4 | Indoor EEPROM (memory chip) malfunction | Replace the control board. |
| E5 | E5 error in Haier AC, related to anti-frost protection | If in cooling mode, check refrigerant levels. |
| E7 | Haier DC inverter AC E7 error or Haier inverter AC error code E7 | Check wiring and control board, replace faulty components. |
| E8 | Indoor fan motor or PCB (Printed Circuit Board) error | Check the motor and PCB, tighten connections, replace faulty parts. |
| E9 | Water flow switch issue (drainage problem) | Clear the drain pipe, replace the switch if faulty. |
| E14 | Indoor fan motor malfunction | Check the motor, replace if necessary. |
Haier AC F Series Error Codes #
| Series | Description | Solution |
|---|---|---|
| F0 | Low refrigerant level (this error code may not be displayed on all models) | Contact a technician to find and fix the leak, then recharge the system. |
| F1 | Haier AC F1 error related to IPM protection | Check the IPM for damage or overheating, replace if necessary. |
| F2 | Instantaneous over-current protection of the compressor activated | Check the compressor and wiring for damage, consult a technician if needed. |
| F3 | Haier DC inverter AC F3 error | Check the wiring and connections between the module and board, replace faulty components if necessary. |
| F4 | Compressor high discharge temperature protection | Check for refrigerant leaks, clean condenser coils, consult a technician. |
| F5 | Outdoor fan motor malfunction | Check the motor, replace if necessary. |
| F6 | Haier AC F6 error code, outdoor ambient temperature sensor malfunction | Replace the sensor. |
| F7 | Suction temperature sensor malfunction | Replace the sensor. |
| F8 | DC fan motor malfunction | Check the motor, replace if necessary. |
| F9 | Module reset required | Restart the AC, if the error persists, replace the faulty module. |
| F10 | Current sensor error (may not display on all models) | Check the current sensor and wiring, replace if necessary. |
| F11 | Loss of synchronism detection (components not working in coordination) | Check for loose wiring or faulty components, consult a technician. |
| F12 | EEPROM malfunction | Replace the control board. |
| F13 | Low refrigerant level | Check for refrigerant leaks and have the system recharged by a technician. |
| F14 | 4-way valve reverse malfunction | Check the valve and associated wiring, replace if faulty. |
| F19 | Power over-voltage or under-voltage protection | Check the power supply and voltage stabilizer. |
| F20 | High-pressure protection | Clean condenser coils, check for obstructions, consult a technician if needed. |
| F21 | Outdoor coil temperature sensor error | Replace the sensor. |
| F22 | Outdoor unit AC overcurrent protection | Check for electrical issues and faulty components, consult a technician. |
| F23 | Compressor U/V/W phase overcurrent protection | Check the compressor and wiring for damage, consult a technician. |
| F24 | Abnormal current detection protection for CT (Current Transformer) | Check the CT and related wiring, consult a technician. |
| F25 | Compressor discharge sensor malfunction | Replace the sensor. |
| F27 | Compressor current sampling circuit fault | Check the circuit and wiring, consult a technician. |
| F28 | Compressor position detection circuit fault | Check the circuit and wiring, consult a technician. |
| F35 | Compressor driver board failure | Replace the driver board. |
| F43 | Model matching abnormality | Check for compatibility between indoor and outdoor units, consult a technician. |
| FE | Refrigerant leak detection malfunction (fixed-frequency AC units) | Check for refrigerant leaks and have the system repaired by a technician. |
How to fix the F1 error on a Haier AC #
F1 is a protection code rather than a simple component failure. Isolate the unit at the breaker, check that the wiring and module connections are secure, then restore power and restart. If F1 returns immediately, the fault is in the module or board and needs a technician — this is not a DIY repair.
Haier AC running but not cooling #
If the unit runs with no code on screen but the air is not cold, work through the simple causes first: a clogged filter, an outdoor unit choked with dust or blocked by a wall or plants, a remote left in fan or dry mode, or a temperature set too high. If all of those are clear and the outdoor pipe never gets cold, suspect low refrigerant, which needs a technician.
How to reset a Haier AC #
A reset clears temporary faults — communication glitches, a one-off protection trip, or a code left on screen after the cause has gone. It will not fix a genuine hardware fault, but it is always the first thing to try and costs nothing.
- Switch the unit off with the remote and wait a few seconds.
- Turn the AC off at the circuit breaker or unplug it.
- Leave it isolated for 5 to 10 minutes so the control board fully discharges.
- Restore power and switch the unit on with the remote.
- If the same code returns immediately, it is a real fault — note the code and call a technician.
Which codes you can clear yourself, and which need a technician #
| Type of fault | Can you fix it? | What to do |
|---|---|---|
| Communication error between indoor and outdoor unit | Sometimes | Reset first. If it returns, the interconnecting cable or a board is at fault — technician. |
| Voltage or over-current protection | Often | Check your stabiliser and supply voltage. Repeated trips mean an electrical problem, not an AC problem. |
| Dirty filter or blocked outdoor unit | Yes | Clean the filters and clear debris and vegetation from around the outdoor unit. |
| Sensor fault (room, coil or outdoor sensor) | No | The sensor needs testing and replacing. Technician. |
| Refrigerant or gas-related fault | No | Usually a leak. Needs pressure testing and recharging by a technician. |
| Compressor, inverter module or PCB fault | No | Board-level repair. Do not attempt this yourself. |
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