Troubleshooting - Gree GMV-ND28ZD/B-T Owner's Manual

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
The unit can't start up
The unit stops after running for a
while
Poor cooling effect
Poor heating effect
Indoor fan doesn't start up during
heating
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.
Multi Variable Air Conditioners Floor and Ceiling Type Indoor Unit
Troubleshooting
①Power supply is not connected
②Circuit breaker tripping caused by leakage of electricity
③Input voltage is too low
④Operation button is closed
⑤Control loop is abnormal
①There is obstacle in front of the condenser
②Control loop is abnormal
③Set the unit in cooling mode when outdoor ambient temperature
is higher than 43°C
①The filter is dirty
②Too heavy heat load of room(e.g. too many people)
③Door or window is open
④Inlet and outlet of IDU are blocked
⑤Setting temperature is too high
⑥The performance of room temperature sensor is getting worse
①The filter is dirty
②Door or window is open
③Setting temperature is too low
④Refrigerant leakage
⑤Outdoor ambient temperature is lower than -5°C
⑥Abnormality of control circuit
①Placing position of tube temperature sensor head is not suitable
②Tube temperature sensor head isn't inserted well
③Wiring of tube temperature sensor head is broken
④Capacitor is leaking electricity
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