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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.
Inspection before maintenance
Following inspection must be carried out by a qualified installer or qualified service person.
Parts
Look through the air discharge port to check the part. Examine the heat exchanger if there is any
Heat exchanger
clogging or damages.
Fan motor
Check if any abnormal noise can be heard.
Fan
Check if any abnormal noise can be heard.
Filter
Go to installed location and check if there are any stains or breaks on the filter.
Look through the air discharge port to check the part. Check if there is any clogging or drain water
Drain pan
is polluted.
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 / discharge
Indoor / outdoor
Dust / dirt, scratches
grilles
Dust / dirt clogging, drain
Drain pan
Indoor
contamination
Ornamental panel,
Indoor
Dust / dirt, scratches
louvres
• Rust, peeling of insulator
Exterior
Outdoor
• Peeling / lift of coat
45-EN
Inspection method
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.
Wash them when they are contaminated
or apply repair coating.
Apply repair coating.
� 23 �
11
Troubleshooting
Confirmation and check
Check code
Unit number of the
malfunctioning
indoor unit
When an error has occurred in the air conditioner,
the check code and the unit number of the indoor
unit appear on the display of the remote control.
* The check code appears only while the unit is
running.
Push the [
MONITOR] button or [
CANCEL]
button to display the check information screen.
While the check information screen appears:
Push the "
Contact" [
F1] button to
display the contact number for service.
Push the "
Information" [
F2] button
to display the model name and serial number of
the unit.
46-EN
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