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23
MALFUNCTION
MALFUNCTION ANALYSIS
Please check below items before asking for servicing. If the malfunction still cannot be eliminated, please
contact a qualified person.
Phenomenon
Items to check
Solution
Unit doesn’t run
at all.
Circuit break trips off?
Ask a qualified person to replace circuit
break.
Is there a power failure?
Wait until power resumes.
Are the electrical connections
properly done?
Ask a qualified person to make proper
connections.
Are the batteries of the remote
control low?
Replace batteries with new ones.
Is the remote control within the
signal receiving distance?
Signal receiving distance is 26.25 ft. (8 m).
Has the unit been turned on im-
mediately after being turned off?
Wait for 3 minutes, and then turn on the
unit again.
Unit runs but stops
immediately.
Are air inlet or air outlet of indoor
or outdoor unit blocked?
Eliminate obstacles.
Abnormal cooling
or heating.
Are air inlet or air outlet of indoor
or outdoor unit blocked?
Eliminate obstacles.
Is the set temperature in proper
range?
Adjust temperature within proper range.
Is fan speed on low setting?
Adjust fan setting with the remote control.
Is the SWING setting ok?
Adjust SWING setting with the remote
control.
Are the doors and windows
closed fully?
Close doors and windows.
Is the unit directly under sunlight? Hang curtains or blinds in the windows.
Is there too much heat source or
people in the room?
Unit will run normally once the heat
sources come back to normal.
Is the filter dirty?
Clean the filter.
Mist is emitted from
the indoor unit air
outlet.
Are indoor temperature and
humidity level high?
This is because indoor air is cooled rapidly.
After a while, indoor temperature and
humidity level will decrease and mist will
disappear.
Water flowing noise.
Has the unit just been turned on
and off?
The noise is the sound of refrigerant
flowing inside the unit, which is normal.
Cracking noise.
Has the unit just been turned on
and off?
This is the sound of friction caused by
expansion and/or contraction of panel or
other parts due to temperature changes.
Dust is blown from
the unit.
Has the unit been turned on after
a long inactivity period?
Dust accumulation in indoor unit is blown
out by the fan motor.
Odours are emitted.
Is there an odour source in
the room, such as furniture or
cigarette?
Eliminate the odour source.
Is the filter dirty?
Clean the filter.