– 13 –
8
Maintenance
WARNING
For daily maintenance including air filter cleaning, make sure to ask the qualified service person.
Do not attempt it by yourself.
Cleaning air filters
Clogged air filters will reduce the cooling and heating performance.
• For cleaning the air filter, refer to the Installation Manual.
Filter sign reset
“
” (filter sign) appears on the detailed display (not displayed when it is in the normal display mode) to tell the
time for cleaning the filter.
When the unit will not be used for a long time
1. Perform the fan operation for a couple of hours to dry inside.
2. Press [
ON/OFF] on the remote controller to stop running, and turn off the circuit breaker.
3. Clean the air filters and reinstall them.
4. When an outdoor unit using R32 refrigerant is combined, turn on the circuit breaker to detect the refrigerant leak.
* When an outdoor unit using R410A refrigerant, leave the circuit breaker turned off.
• “Filter check” is displayed on the screen if you start
running the air conditioner when “
” (filter sign)
appears on the detailed display. Push one of the
operation buttons to erase the message or wait for
more than 5 seconds until the message disappears.
1
Push the [
∧
] / [
∨
] button to select
“Filter sign reset” on the menu screen, then
push the “
Set” [
F2] button.
2
Push the “
Reset” [ F2] button.
Cool
24
Room A
12:00
Mode
Fan Speed
Filter sign
Filter check.
Room A
12:00
Mode
Fan Speed
Remaining hour to clean the filte
r.
Clean the air filter
Reset
Filter sign reset
Return
Set
Reset
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
• Clean the filter with water or a vacuum cleaner.
• 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
Wipe off dirt with a soft cloth.
Drain pan
Indoor
Dust / dirt clogging, drain
contamination
Clean the drain pan and check the downward slope
for smooth drainage.
Front 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.
25-EN
26-EN
