60
Service Manual
Installation and Maintenance
Cooling is not sufficient.
The set temperature is too high.
Turn down the set temperature.
Filter is too dirty and the air inlet port is blocked. Clean the filter.
Outdoor condenser can not be smoothly
discharge.
Clean the condenser.
Supply voltage is not stable.
Adjust the supply voltage.
The room is not properly sealed; there is
frequent passage of personnel;
there is heating device in the room.
Adjust the indoor environment.
Outdoor temperature is too high and is
above 43 degree.
Stop the unit.
Refrigerant is insufficient or excess.
Charge refrigerant or discharge the excess
refrigerant in the system
The door or window is opened.
Close the door and the window.
There is obstacle in the air inlet and outlet port.
Remove the obstacle.
The compressor is not
running after energization.
The set temperature is too high or the
controller is broken.
Turn down the set temperature or replace
the main board of controller.
The compressor capacitor is broken. Replace the compressor capacitor.
Wrong wiring.
Reconnect the wire.
The compressor is open-circuited or
short-circuited.
Replace the compressor.
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