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Concealed Duct High Static Pressure
Installation Manual
EN
11 MAINTENANCE
CAUTION
When connecting a return air duct to the unit, the cleaning method of the air filter differs according to the
construction of duct end. Ask a qualified installer or qualified service person.
<Daily maintenance>
Cleaning of air filter
1. If is displayed on the remote controller, contact to qualified
installer or qualified service person.
2. Take out the air filter.
• Push the extrusion of the air filter to inside and pull out it to take
out the air filter.
3. Cleaning with water or vacuum cleaner
• If dirt is heavy, clean the air filter by tepid water with neutral
detergent or water.
• After cleaning with water, dry the air filter sufficiently in a shade
place.
4. Mount the air filter.
5. After cleaning, push .
display disappears.
CAUTION
• Do not start the air conditioner while leaving air filter removed.
• Push the filter reset button. ( indication will be turn off.)
PERIODIC MAINTENANCE
• 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.
• When a drain pump kit (sold separately) is installed.
If it is used in a place full of dust or oil mist, the pump will be clogged and proper drainage is disabled.
Clean the drain pump periodically. For how to clean the drain pump, contact the dealer.
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