▼
Maintenance List
Part
Unit
Check (visual / auditory)
Maintenance
Heat exchanger
Indoor / outdoor Dust / dirt clogging, scratches
Wash the heat exchanger when it is
clogged.
Fan motor
Indoor / outdoor Sound
Take appropriate measures when abnormal
sound is generated.
Filter
Indoor
Dust / dirt, breakage
• Wash the
fi
lter with water when it is
contaminated.
• Replace it when it is damaged.
Fan
Indoor
• Vibration, balance
• Dust / dirt, appearance
• Replace the fan when vibration or balance
is terrible.
• Brush or wash the fan when it is
contaminated.
Air intake /
discharge grilles
Indoor / outdoor Dust / dirt, scratches
Fix or replace them when they are deformed
or damaged.
Drain pan
Indoor
Dust / dirt clogging, drain
contamination
Clean the drain pan and check the
downward slope for smooth drainage.
Exterior
outdoor
• Rust, peeling of insulator
• Peeling / lift of coat
Apply repair coating.
8
Troubleshooting
Check the points described below before requesting repair.
Symptom
Cause
It is not a failure.
Outdoor unit
• White, misty, cold air or water comes out • The fan of the outdoor unit is automatically
stopped and defrosting is performed.
• Sometimes the noise of air leaking is
heard.
• The solenoid valve works when defrosting starts
or stops.
• A noise is heard when the power is
turned on.
• The outdoor unit is preparing for running.
Indoor unit
• Sometimes a swishing is heard.
• When the unit starts running, during operation,
or immediately after the unit stops running, a
sound such as water
fl
owing may be heard, or
the operation sound may become louder for a
couple of minutes immediately after the unit starts
running. This is the sound of the refrigerant
fl
owing
or the dehumidi
fi
er draining.
• A clacking sound is heard.
• This is a sound generated when the heat
exchanger or other part expands and contracts
slightly due to temperature change.
• Discharged air smells unusual.
• Various smells from the walls, carpet, clothes,
cigarette, cosmetics or other things adhere to the
air conditioner.
• The unit does not run.
• Has a blackout occurred?
• Has the circuit breaker blown?
• Has the protective device been activated?
(The operation indicator and on the remote
controller are blinking.)
Check again.
The room does not cool down.
• Is the air intake or discharge of the outdoor unit
clogged?
• Is a door or window open?
• Is the air
fi
lter clogged with dust?
• Is the setup temperature appropriate?
If there is something unusual even after checking the above, stop running the unit, turn off the circuit breaker, and
inform the dealer where you purchased the product of the product number and symptom. Do not attempt to repair
the unit by yourself as doing so is dangerous. If the check indicator (e.g.
,
,
) is displayed on the remote
controller LCD, inform the dealer of its content as well.
If any of the following occur, stop running the unit immediately, turn off the circuit breaker, and contact the dealer
where you purchased the product.
• The switch does not work properly.
• The circuit breaker often blows out.
• You unintentionally put a foreign object or water inside.
• The unit cannot be run even after the cause of the protective device activation is removed.
• Other unusual conditions are found.
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