11
English
If the system does not operate at all.
1.
Check if there is a power failure.
•
Wait until power is restored. If power failure
occurs during operation, the system auto-
matically restarts immediately after the power
supply recovers.
Check if no fuse has blown.
•
Turn off the power supply.
Check if the breaker is blown.
•
Turn the power on with the breaker switch in
the off position.
Do not turn the power on with the breaker
switch in the trip position.
(Contact your dealer.)
ON
OFF
Trip position
Switch
Breaker
If the system stops operating after operat-
2.
ing the system.
Check if the air inlet or outlet of outdoor or
•
indoor unit is blocked by obstacles.
Remove the obstacle and make it well-venti-
lated.
Check if the air fi lter is clogged.
•
Ask a qualifi ed service person to clean the
air fi lters (Refer to HOW TO CLEAN THE AIR
FILTER).
The system operates but it does not suffi -
3.
ciently cool or heat.
If the air inlet or outlet of the indoor or the
•
outdoor unit is blocked with obstacles.
Remove the obstacle and make it well-venti-
lated.
If the air fi lter is clogged.
•
Ask a qualifi ed service person to clean the
air fi lters (Refer to HOW TO CLEAN THE AIR
FILTER).
If the set temperature is not proper (Refer to
•
ADJUSTMENT).
If the FAN SPEED button is set to LOW
•
SPEED (Refer to ADJUSTMENT).
If the doors or the windows are open. Shut
•
doors or windows to prevent wind from com-
ing in.
If direct sunlight enters the room (when cool-
•
ing).
Use curtains or blinds.
When there are too many inhabitants in the
•
room (when cooling).
Cooling effect decreases if heat gain of the
room is too large.
If the heat source of the room is excessive
•
(when cooling).
Cooling effect decreases if heat gain of the
room is too large.
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3/16/2010 4:24:11 PM
3/16/2010 4:24:11 PM
