From Technical Support Wiki
Error Codes
| Code
|
Error Name
|
Troubleshooting
|
| DF
|
Defrost
|
Currently in defrost mode. Will return to normal operations when defrost is finished.
|
| FF
|
Outdoor Low Temperature Indication
|
The current temperature outside is too low for proper unit functionality.
|
| F1
|
Communication Fault
|
- The communication wire is broken off. Please check the state of the wire.
- Please check whether the electrical control board is damaged. It should be replaced if damaged.
- Please check whether the power ground wire is reliable.
- Please check for outside interference. If found, remove the outside interference.
|
| F2
|
Indoor Temperature Sensor Fault
|
- Check whether the resistance of the sensor is normal. If it is abnormal the sensor should be replaced.
- Check whether there is a short circuit or open circuit in the wire of the sensor, and whether the plug is connected correctly.
- After checking for the above conditions and finding nothing, check the electric control board.
|
| F3
|
Coil Temp. Sensor Fault
|
- Check whether the resistance of the sensor is normal. If it is abnormal the sensor should be replaced.
- Check whether there is a short circuit or open circuit in the wire of the sensor, and whether the plug is connected correctly.
- After checking for the above conditions and finding nothing, check the electric control board.
|
| F4
|
Indoor Motor Fault
|
- Check whether the contact of the plug of the motor wire and socket is in good condition. Make sure it is well contacted.
- Check whether the indoor motor is damaged. If it is damaged, replace it.
- Check whether the controllable silicon and other components of the electric control board are are damaged. Please replace board if that is the case.
- Check whether the indoor motor is being obstructed when running.
|
| F5
|
IPM Protection
|
- Check whether the supply voltage is over the acceptable range.
|
| F6
|
Outdoor Sensor Fault
|
- Check whether the resistance of the sensor is normal, otherwise replace it.
- Check whether there is a short circuit or open circuit in the wire of the sensor, and whether the plug is connected correctly.
- After checking for the above conditions and finding nothing, check the electric control board.
|
| E7
|
Outdoor Feedback Fault
|
- Check whether the winding resistance and operation current of the compressor are normal.
- Check whether the high and low pressure is normal when the unit is running.
- Check whether the indoor and outdoor wiring is right; when it is wrong, refer to the wiring diagram.
- Check whether the contact of the inserter on the circuit board and the connection is well. Repair if otherwise.
- Check whether the signal feedback wire is disconnected. Replace or reconnect the feedback signal wire.
- Check whether the supply power is phase-lacking or phase opposition.
- Check whether the AC electromagnetic contractor is well.
|
| E8
|
Frost/Overheat Protection
|
- Check whether the filter of the indoor unit is dirty or blocked. Clean if it is dirty.
- Check whether the indoor fan is running normally, and replace the motor if it is abnormal.
- Check whether indoor pipe temperature sensor is normal, and replace the sensor if it is abnormal.
- Check whether the system pressure is normal, if abnormal, you should check whether there is leakage and fill the refrigerant if need be.
|