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Idiomas disponibles
OM_D0X7303301-01_EN_Print.book Page 125 Friday, May 19, 2023 6:48 PM
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
Heat exchanger
Access from inspection opening and remove the access panel. Examine the heat
exchanger if there is any clogging or damages.
Fan motor
Access from inspection opening and check if any abnormal noise can be heard.
Fan
Access from inspection opening and remove the access panel. Examine the fan
if there are any waggles, damages or adhesive dust.
Filter
Access from check port and check if there are any stains or breaks on the filter.
Drain pan
Access from inspection opening and remove the access panel. Check if there is
any clogging or drain water is polluted.
Maintenance List
Parts
Unit
Heat exchanger
Indoor / Outdoor
Dust / dirt clogging, scratches
Fan motor
Indoor / Outdoor
Sound
Filter
Indoor
Dust / dirt, breakage
• Vibration, balance
• Dust / dirt, appearance
Fan
Indoor
Air intake /
Indoor / Outdoor
Dust / dirt, scratches
discharge grilles
Dust / dirt clogging, drain
Drain pan
Indoor
contamination
Ceiling panel, louvres
Indoor
Dust / dirt, scratches
• Rust, peeling of insulator
Exterior
Outdoor
• Peeling / lift of coat
33-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.
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5
Troubleshooting
Confirmation and check
If a problem occurs with the air
conditioner, the OFF timer indicator
alternately shows the check code and
the indoor Unit No. in which the
problem occurred.
Troubleshooting history and confirmation
You can check the troubleshooting history with the following procedure if a problem occurs with the air conditioner.
(The troubleshooting history records up to 4 incidents.)
You can check it during operation or when operation is stopped.
• If you check the troubleshooting history during OFF timer operation, the OFF timer will be canceled.
Procedure
Push the OFF timer button for over 10 seconds and the
indicators appear as an image indicating the troubleshooting
history mode has been entered. If [
displayed, the mode enters in the troubleshooting history mode.
• [01: Order of troubleshooting history] appears in the
1
temperature indicator.
• The OFF timer indicator alternately shows the [check code]
and the [indoor Unit No. ] in which the problem occurred.
Each time the setting button is pushed, the recorded
troubleshooting history is displayed in sequence.
The troubleshooting history appears in order from [01] (newest)
to [04] (oldest).
CAUTION
CAUTION
2
In the troubleshooting history mode, DO NOT push the Menu
button for over 10 seconds, doing so deletes the entire
troubleshooting history of the indoor unit.
After you have finished checking, push the ON/OFF button to
return to the regular mode.
3
• If the air conditioner is operating, it remains operated even
after the ON/OFF button has been pushed.
To stop its operation, push the ON/OFF button again.
Check code
The indoor Unit No. in which
the problem occurred.
Description of operation
Service check] is
1
2
3
34-EN
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