GREE U-Match 5 SERIES UNIT SERVICE MANUAL
89
3.5 Failures Not Caused by Errors
(1) If your air conditioner fails to function normally, please first check the following items before maintenance:
Problem Cause Corrective measure
The air conditioner can't run.
If you turn off the unit and then immediately turn
it on, in order to protect the compressor and
avoid system overload, compressor will delay
running for 3min.
Please wait for a while.
Wire connection is wrong. Connect wires according to the wiring diagram.
Fuse or circuit breaker is broken.
Replace the fuse or switch on the circuit
breaker.
Power failure. Restart after power is resumed.
Power plug is loose. Re-insert the power plug.
Remote controller has low battery. Replace the batteries.
Bad cooling or heating
effect.
Air inlet and outlet of indoor or outdoor units have
been blocked.
Clear the obstacles and keep the room for
indoor and outdoor units well ventilated.
Improper temperature setting. Reset a proper temperature.
Fan speed is too low. Reset a proper fan speed.
Air flow direction is not right. Change the direction of air louvers.
Doors or windows are open. Close them.
Exposed under direct sunshine.
Put on curtains or louvers in front of the
windows.
Too many heat sources in the room. Remove unnecessary heat sources.
Filter is blocked or dirty. Send for a professional to clean the filter.
Air inlets or outlets of the units are blocked.
Clear away obstacles that are blocking the air
inlets and outlets of indoor and outdoor units.
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