Operation Manual

English 12
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 “MAINTENANCE”)
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 air fl ow direction is not proper. •
(Refer to “AIR FLOW DIRECTION ADJUST”)
If the doors or the windows are open. •
Shut doors or windows to prevent wind from
coming 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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