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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
Indoor / outdoor
Heat exchanger
Dust / dirt clogging, scratches
Fan motor
Indoor / outdoor
Sound
Filter
Indoor
Dust / dirt, breakage
• Vibration, balance
Fan
Indoor
• Dust / dirt, appearance
Air intake / discharge
Indoor / outdoor
Dust / dirt, scratches
grilles
Dust / dirt clogging, drain
Drain pan
Indoor
contamination
Indoor
Front panel, louvers
Dust / dirt, scratches
• Rust, peeling of insulator
Exterior
Outdoor
• Peeling / lift of coat
109-EN
Check (visual / auditory)
Maintenance
Wash the heat exchanger when it is clogged.
Take appropriate measures when abnormal sound
is generated.
• Clean the filter with water or a vacuum cleaner.
• Replace it when it is damaged.
• Replace the fan when vibration or balance is
terrible.
• Brush or wash the fan when it is contaminated.
Wipe off dirt with a soft cloth.
Clean the drain pan and check the downward slope
for smooth drainage.
Wash them when they are contaminated or apply
repair coating.
Apply repair coating.
– 55 –
Replacing a refrigerant leak detection sensor
WARNING
If check codes "J29" or "J31" appear on the remote controller LCD (Liquid Crystal Display), replace a
refrigerant leak detection sensor. Contact the dealer where you purchased the air conditioner to replace
the refrigerant leak detection sensor. Continuing to use the air conditioner without replacing the sensor
may cause a fire in case refrigerant leak occurs.
Check code "J29" appears when the sensor trouble is detected.
Check code "J31" appears when the sensor is out of the life of the product.
Contact the dealer where you purchased the air conditioner to replace the refrigerant leak detection sensor.
● Check period and Maintenance period
Check period:
One year
Maintenance period:
Five years
(Replacement)
* Places where a lot of siloxanes are present (Hair salon) require periodic maintenance for sensor since there is a possibility
that refrigerant leak detection sensor won't be able to work.
110-EN
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