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Malfunction Codes
Unit’s Malfunction Codes.
No. Malfunction
Name
Display
Code Unit’s Condition Possible Causes
Display
Window
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
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
Humidity sensor is short-circuited.
Humidity sensor is damaged.
Display board is damaged.
4Freon-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
Ambient operation condition is bad.
The evaporator and condenser are
blocked with lth.
The system is abnormal.
96


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