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7. Troubleshooting and Maintenance
7.1 Troubleshooting
If your air-conditioning unit suffers from abnormal operation or failure, please first check the
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 found 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 by Gree. Only ask
professional serviceman to check and repair the unit.
7.2 Routine Maintenance
① . Do turn off the unit and cut off the main power supply when cleaning the air conditioner, otherwise
electric shock may happen.
② . Do not make the air conditioner wet or electric shock may be lead; Ensure that the air conditioner
will not be cleaned by water rinsing under any circumstance.
③ . Volatile liquid like thinner or gasoline would damage the appearance of air conditioner. (So, only soft
dry cloth and wet cloth moistened by neutral cleaning fluid could be used to clean the surface panel
of air conditioner.)
Copyright 2018. This translation is property of GREE PRODUCTS SL. All rights reserved. Total or partial reproduction without its express authorization is prohibited.
DC Inverter U-match Series Floor Ceiling Type Unit
Table 12
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.
The air filter is dirty or blocked.
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 .
The air filter is dirty or blocked.
① .
The door or window is not firmly closed.
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 .
WARNING !
26
Possible Reasons
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