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
|
Indoor 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.
|
| F7
|
Outdoor Coil 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.
|
| F9
|
Exhaust Gas Sensor Failure
|
- 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.
|