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Concealed Duct High Static Pressure
Installation Manual
Concealed Duct High Static Pressure
Installation Manual
Maintenance List
12 TROUBLESHOOTING
Part
Heat exchanger
Fan motor
Filter
Fan
Air inlet/outlet grilles
Drain pan
Ornamental panel,
louvres
Exterior
Unit
Indoor/outdoor
Indoor/outdoor
Indoor
Indoor
Indoor/outdoor
Indoor
Indoor
Outdoor
Check (visual/auditory)
• Dust/dirt clogging,
scratches
• Sound
• Dust/dirt, breakage
• Vibration, balance
• Dust/dirt, appearance
• Dust/dirt, scratches
• Dust/dirt clogging,
drain contamination
• Dust/dirt, scratches
• Rust, peeling of insulator
• Peeling/lift of coat
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.
n Confirmation and check
When an error occurred in the air conditioner, an error
code and indoor UNIT No. appear on the display part of
the remote controller.
The error code is only displayed during the operation.
If the display disappears, operate the air conditioner
according to the following “Confirmation of error log” for
confirmation.
n Confirmation of error log
When an error occurred on the air conditioner, the error log
can be confirmed with the following procedure.
(The error history is stored in memory up to 4 errors.)
The log can be confirmed from both operating status and
stop status.
Procedure 1
When pushing and buttons at the same time for
4 seconds or more, the following display appears.
If
is displayed, the mode enters in the error log mode.
•[01: Order of error log] is displayed in CODE No..
• [Error code] is displayed in CHECK.
• [Indoor unit address in which an error occurred] is
displayed in Unit No..
Procedure 2
Every pushing of button used to set temperature,
the error log stored in memory is displayed in order.
The numbers in CODE No. indicate CODE No. [01] (latest)
→ [04] (oldest).
REQUIREMENT
Do not push button because all the error log of the
indoor unit will be deleted.
Procedure 3
After confirmation, push button to return to the usual
display.
Error code Indoor UNIT No. in
which an error occurred
3
2
1
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