Multi Variable Air Conditioners Floor and Ceiling Type Indoor Unit
21
8 Troubleshooting
The air conditioner is not expected to be serviced by users. Incorrect repair may cause
electric shock or fire, so please contact an authorized service center for professional service.
The following checks prior to contact may save your time and money.
Phenomenon Troubleshooting
The unit can’t start up
①
Power supply is not connected
②
Circuit breaker tripping caused by leakage of electricity
③
Input voltage is too low
④
Operation button is closed
⑤
Control loop is abnormal
The unit stops after running for a
while
①
There is obstacle in front of the condenser
②
Control loop is abnormal
③
Set the unit in cooling mode when outdoor ambient temperature
is higher than 43°C
Poor cooling effect
①
The filter is dirty
②
Too heavy heat load of room(e.g. too many people)
③
Door or window is open
④
Inlet and outlet of IDU are blocked
⑤
Setting temperature is too high
⑥
The performance of room temperature sensor is getting worse
Poor heating effect
①
The filter is dirty
②
Door or window is open
③
Setting temperature is too low
④
Refrigerant leakage
⑤
Outdoor ambient temperature is lower than -5°C
⑥
Abnormality of control circuit
Indoor fan doesn’t start up during
heating
①
Placing position of tube temperature sensor head is not suitable
②
Tube temperature sensor head isn't inserted well
③
Wiring of tube temperature sensor head is broken
④
Capacitor is leaking electricity
Note:
If air conditioner still fails to work normally after checking and handling as described above,
please stop using it immediately and contact local service center for assistance.
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