WDH-20 Malfunction codes

No.	Malfunction name	Display code	Unit`s condition	Possible causes
1	Ambient Temperature Sensor Malfunction	F1	Compressor and fan motor stop. This button is invalid	Ambient temperature sensor is loosen or is poorly connected with the terminal of display board. Some element of display board may have been put upside down and cause short circuit. Ambient temperature sensor is damaged Display board is damaged.
2	Tube Temperature Sensor Malfunction	F2	Compressor and fan motor stop. This button is invalid	Temperature sensor on the evaporator is loosen or is poorly connected with the terminal of display board Some element of display board may have been put upside down and cause short circuit. Temperature sensor on the evaporator is damaged Display board is damaged.
3	Humidity Sensor Malfunction	L1	Compressor and fan motor stop. This button is invalid	Humidity sensor is short-circuited Humidity sensor is damaged Display board is damaged.
4	Freon-lacking protection	F0	The compressor stops; the fan motor keeps on running.	Refrigerant is leaking. System is blocked
5	High-temperature over load protection	H3	The compressor stops; the fan motor keeps on running.	Ambient operation condition is bad. The evaporator and condenser are blocked with filth. The system is abnormal.

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