Troubleshooting And Maintenance; Troubleshooting - Gree Free match GKH 12 BB-K6DNA3A/I Mode D'emploi

8 Troubleshooting and Maintenance

8.1 Troubleshooting

following points before repair:
Failure
The unit cannot be started.
The unit operates for a
while and then stops.
Poor cooling effect.
Poor heating effect
Note: After carrying out the check of the above items and taking relevant measures to solve the
problems but the air-conditioning unit still does not function well, please stop the operation of the
unit immediately and contact the local service agency designated. Only ask professional
serviceman to check and repair the unit.
DC Inverter
Table 10
The power supply is not connected.
① .
Electrical leakage of air-conditioning unit causes tripping of the leakage
② .
switch.
The operating keys are locked.
③ .
The control loop has failure.
④ .
There is obstacle in front of the condenser.
① .
The control loop is abnormal.
② .
Cooling operation is selected when the outdoor ambient temperature is
③ .
above 48°C.
① .
There is heat source or too many people inside the room.
② .
The door or window is open.
③ .
There is obstacle at the air intake or outlet.
④ .
The set temperature is too high.
⑤ .
There is refrigerant leakage.
⑥ .
The performance of room temperature sensor becomes worse
⑦ .
① .
② .
The set room temperature is too low.
③ .
There is refrigerant leakage.
④ .
The outdoor ambient temperature is lower than -5°C.
⑤ .
Control loop is abnormal.
⑥ .
Series Cassette Type Unit
Possible Reasons