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7 Troubleshooting
Check the points described below before requesting repair.
Symptom Cause
It is not a malfunction.
Outdoor unit
• White, misty, cold air or water comes out
• Sometimes the noise of air leaking is heard.
• A noise is heard when the power is turned
on.
• The fan of the outdoor unit is automatically stopped
and defrosting is performed.
• The solenoid valve works when defrosting starts or
stops.
• The outdoor unit is preparing for running.
• 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 dehumidifi er draining.
•
This is a sound generated when the heat exchanger, etc.
expands and contracts slightly due to temperature
change.
•
Various smells from the walls, carpet, clothes, cigarette,
cosmetics, etc. adhere to the air conditioner.
•
The fan keeps running to self clean operation the heat
exchanger during drying.
Indoor unit
• A clacking sound is heard.
• Discharged air smells unusual.
• The fan continues running even after the
unit operation is stopped.
• 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 or warm up.
•
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 air volume set to “Low”? Or is the operation mode
set to “Fan”?
• Is the setup temperature appropriate?
Check periodically
• If the unit is used for a long time, parts may deteriorate and cause malfunction or bad drainage of dehumidified water
depending on the heat, humidity, or dust.
• In addition to the usual maintenance, it is recommended that you have the unit checked and maintained by the dealer where
you purchased it.
NOTE
For environmental conservation, it is strongly recommended that the indoor and outdoor units of the air conditioner in
use be cleaned and maintained regularly to ensure efficient operation of the air conditioner.
When the air conditioner is operated for a long time, periodic maintenance (once a year) is recommended.Furthermore,
regularly check the outdoor unit for rust and scratches, and remove them or apply rustproof treatment, if necessary.
As a general rule, when an indoor unit is operated for 8 hours or more daily, clean the indoor unit and outdoor unit at
least once every 3 months. Ask a professional for this cleaning / maintenance work.
Such maintenance can extend the life of the product though it involves the owner’s expense.
Failure to clean the indoor and outdoor units regularly will result in poor performance, freezing, water leakage, and even
compressor failure.
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.
Ornamental panel,
louvers
Indoor
Dust / dirt, scratches
Wash them when they are contaminated or apply
repair coating.
Exterior Outdoor
• Rust, peeling of insulator
• Peeling / lift of coat
Apply repair coating.
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 (
, , , etc.) 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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