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7
Maintenance
WARNING
Cleaning the air filter and other parts of the air filter involves dangerous work in high places, so be sure to
have a qualified installer or qualified service person to do it.
Do not attempt it by yourself.
▼ Cleaning air fi lters (sold separately or locally procured)
Clogged air filters will reduce the cooling and heating performance.
1) If " " is displayed on the remote controller, clean the air filters.
2) When the cleaning of air filters has been completed, push
" " disappears.
◆ When not used for a long time
1. Perform the fan operation for a couple of hours to dry inside.
2. Push
button on the remote controller to stop running, and turn off the circuit breaker.
3. Clean the air filters and reinstall them.
◆ Before the cooling season
Clean the drain pan
• Contact the dealer where you purchased the product.
(Drain does not work if the drain pan or vent is clogged. In some cases the drain may overflow and wet the wall or
floor. Clean the drain pan before the cooling season.)
◆ 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.
21-EN
(1)
button.
(2)
– 11 –
▼ Maintenance List
Part
Unit
Heat exchanger
Indoor / outdoor Dust / dirt clogging, scratches
Fan motor
Indoor / outdoor Sound
Filter
Indoor
Dust / dirt, breakage
• Vibration, balance
Fan
Indoor
• Dust / dirt, appearance
Air intake /
Indoor / outdoor Dust / dirt, scratches
discharge grilles
Dust / dirt clogging, drain
Drain pan
Indoor
contamination
• Rust, peeling of insulator
Exterior
outdoor
• Peeling / lift of coat
Check (visual / auditory)
Maintenance
Wash the heat exchanger when it is
clogged.
Take appropriate measures when abnormal
sound is generated.
• Wash the filter with water when it is
contaminated.
• Replace it when it is damaged.
• Replace the fan when vibration or balance
is terrible.
• Brush or wash the fan when it is
contaminated.
Fix or replace them when they are deformed
or damaged.
Clean the drain pan and check the
downward slope for smooth drainage.
Apply repair coating.
22-EN
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