Publicité
12
Maintenance
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
Access from inspection opening and remove the access panel. Examine the heat exchanger if
Heat exchanger
there is any clogging or damages.
Fan motor
Access from inspection opening and check if any abnormal noise can be heard.
Access from inspection opening and remove the access panel. Examine the fan if there are
Fan
any waggles, damages or adhesive dust.
Filter
Go to installed location and check if there are any stains or breaks on the filter.
Access from inspection opening and remove the access panel. Check if there is any clogging
Drain pan
or drain water is polluted.
Maintenance List
Part
Unit
Heat exchanger
Indoor / outdoor
Fan motor
Indoor / outdoor
Filter
Indoor
Fan
Indoor
Air intake / discharge
Indoor / outdoor
grilles
Drain pan
Indoor
Ceiling panel, louvers
Indoor
Exterior
Outdoor
51-EN
Inspection method
Check (visual / auditory)
Maintenance
Wash the heat exchanger when it is
Dust / dirt clogging, scratches
clogged.
Take appropriate measures when
Sound
abnormal sound is generated.
Wash the fi lter with water when it is
•
Dust / dirt, breakage
contaminated.
•
Replace it when it is damaged.
•
Replace the fan when vibration or
•
Vibration, balance
balance is terrible.
•
Dust / dirt, appearance
•
Brush or wash the fan when it is
contaminated.
Fix or replace them when they are
Dust / dirt, scratches
deformed or damaged.
Clean the drain pan and check
Dust / dirt clogging, drain
the downward slope for smooth
contamination
drainage.
Wash them when they are
Dust / dirt, scratches
contaminated or apply repair coating.
•
Rust, peeling of insulator
Apply repair coating.
•
Peeling / lift of coat
13
Troubleshooting
Confirmation and check
■
Check code
Indoor unit number
75
Confirming an alarm history
■
Ten check codes in the past, troubled unit, and date when trouble occurred are displayed on "Alarm history" screen.
Deleting the alarm history
– 26 –
When an error occurs in the air conditioner, the check
code and the indoor unit number flash on the display of
the remote controller.
The check code is only displayed during the
∗
operation.
When the check code and indoor unit number are
displayed, pressing [
Return] opens the "Check"
screen.
In the "Check" screen, press [
Set/Fix] to show the
contacts.
Press [
Menu] to display "Model information".
1
In the "Field setting menu" screen, press
[
] and [
] to select "Alarm history",
and then press [
Set/Fix]
List of latest 10 alarm data is displayed.
The oldest data are deleted in order to record
∗
the new ones.
The date and time when the check code
occurred for the first time is displayed for the
repeated alarm.
1
Press [
Menu] while the "Alarm history"
screen is displayed
"Reset all alarm data." is displayed.
2
Press [
Set/Fix]
Delete the Alarm history in each remote
controller when the dual remote controller
system is used.
EN
EN
ID
52-EN
Publicité
