Mini-Split AC Error Codes Troubleshooting
Error Code-F0 Refrigerant leakage protection
F0 code means that the Split Air Conditioning is low in refrigerant gas. If your split air conditioning is low in refrigerant gas, you should hire a professional HVAC technician to refill the refrigerant. Please note that you have to refill the same
Error Code-F1, F2, F4 Temperature sensor malfunction
If the indoor unit displays the F1, F2, or F4 error code, it means the temperature sensor is malfunctioning. Please try to remove the unit from power for a few minutes. Plug the unit back in to determine if the malfunction code is still present. Plea
Error Code-H3, E8 Overload protection
Remove the unit from power for a few minutes. Plug the unit back in to determine if the malfunction code is still present.
Error Code-E2 Anti freezing protection
Remove the unit from power for a few minutes. Plug the unit back in to determine if the malfunction code is still present.
Error Code-E6 Communication malfunction
Reconnect the line according to wiring diagram.
Error Code-E5 Overcurrent protection
Check and make sure the supply voltage is stable and consistent with the rated range.Check if the inlet/outlet is blocked and remove the blockage if any.
Error Code-H6 Internal fan motor does not operate
After powering off, turn the fan blades by hand to ensure the blades are running smoothly.