When the outdoor coil pipe TEMP sensor is out of order or removed, the air conditioner will set to defrost automatically in order to prevent it not working normally while the outdoor coil pipe TEMP sensor is malfunction.
Fault F6: PG motor faults
Fault F7: Indoor TEMP sensor faults
Fault F8: Indoor coil pipe TEMP sensor faults
Fault F9: Outdoor coil pipe TEMP sensor faults

Wall Mounted Type
Indoor unit display and solve methods of protector stop ingredients in indoor unit and outdoor unit
Error Codes | Trouble |
---|---|
F1 | Heat overloading protector |
F2 | Cool freeze protector |
F3 | Instantaneous power cut |
F4 | direct current fan motor no feedback |
1F | cool overloading protector |
2F | exhaust overheating protector |
3F | over or not enough pressure protector |
4F | over-current protector |
5F | IPM protector |
6F | defrost state |
7F | direct current compressor drive exceptional |
8F | direct current compressor cannt start |

Trouble Solve Methods
E1: The trouble of indoor unit room temperature sensor.
E2: The trouble of unit pipe temperature sensor. indoor
E3: The trouble of PG motor
E5: The trouble of bad communication of indoor unit and outdoor unit.
E6: The EEPRO of indoor unit error
1E: The trouble of outdoor unit pipe temperature sensor
3E: The trouble of exhaust sensor
4E: The EEPRO of indoor unit error
8E: The trouble of PFC.
Troubleshooting
Operation of air conditioner: Fan speed setting is not allowed in AUTO or DRY mode
Explanation: The speed of the indoor fan is set to low in DRY mode. Fan speed of 3 steps is selected automatically in AUTO mode
Operation of air conditioner: Compressor stops operation intermittently in DRY mode
Explanation: Compressor operation is automatically controlled in DRY mode depending on the room temperature and humidity
Operation of air conditioner: Compressor of the outdoor unit is operating although it is turned off in HEAT mode
Explanation: When the unit is turned off while de-ice is activated, the compressor continues operation for up to 10 minutes (maximum) until the deice is completed
Operation of air conditioner: Timer indicator lamp lights up and the air conditioner does not operate
Explanation: Timer is being activated and the unit is in ready mode. The unit operates normally if the timer operation is cancelled
Operation of air conditioner: The compressor and indoor fan stop intermittently in HEAT mode
Explanation: The compressor and indoor fan stop intermittently if room temperature exceeds a setting temperature in order to protect the compressor from overheated air in HEAT mode
Operation of air conditioner: Indoor fan and outdoor fan stop intermittently in HEAT mode
Explanation: The compressor operates in a reverse cycle to remove exterior ice in HEAT mode, and indoor fan and outdoor fan do not operate intermittently for within 20% of the total heat operation
Operation of air conditioner: The compressor stops intermittently in COOL mode or DRY mode, and fan speed of the indoor unit decreases
Explanation: The compressor stops intermittently or the fan speed of the indoor unit decreases to prevent inside/outside air frozen depending on the inside/outside air temperature.
Comments