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5 Maintenance
5.1 Failures Not Caused by Faults of the AC
(1) If your air conditioner fails to function normally, please first check the following
items before maintenance:
Problem
The air
conditioner
can't run.
Bad cooling or
heating effect.
DC Inverter U-match Series Floor Ceiling Type Unit
Cause
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.
Wire connection is wrong.
Fuse or circuit breaker is
broken.
Power failure.
Power plug is loose.
Remote control has low
battery.
Air inlet and outlet of indoor
or outdoor units have been
blocked.
Improper temperature setting
Fan speed is too low.
Air flow direction is not right.
Doors or windows are open.
Exposed under direct
sunshine
Too many heat sources in
the room.
Filter is blocked or dirty.
Air inlets or outlets of the
units are blocked.
Corrective measure
Please wait for a while.
Connect wires according to the
wiring diagram.
Replace the fuse or switch on
the circuit breaker.
Restart after power is resumed.
Re-insert the power plug.
Replace the batteries.
Clear the obstacles and keep
the room for indoor and outdoor
units well ventilated.
Reset a proper temperature.
Reset a proper fan speed.
Change the direction of air
louvers.
Close them.
Put on curtains or louvers in
front of the windows.
Remove unnecessary heat
sources.
Send for a professional to clean
the filter.
Clear away obstacles that are
blocking the air inlets and
outlets of indoor and outdoor
units.
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