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Troubleshooting
Please carry out the following checks before making a service call.
Poor cooling
Poor cooling or heating
If the air-conditioner does not operate properly after you have checked the above points, or if any doubt still exists after you have
consulted page 20, or if things happen as shown on page 21, switch off the power and contact your dealer.
An alternative refrigerant (R410A) is used in this air-conditioner. When asking your
dealer for service or inspection and maintenance, explain the dealer about it.
Airflow is not blown out for 5 to 10 min. or blown out not
warm wind for a moment at HEATING operation.
RUN light blinks slowly
(1.5 sec ON, 0.5 sec OFF)
Notice
The unit does not restart immediately after you have
stopped it.
(RUN light is on)
Airflow is not blown out when starting the HEATING opera-
tion.
RUN light blinks slowly
(1.5 sec ON, 0.5 sec OFF)
Airflow has stopped to prevent blowing out of cold air until the
indoor heat exchanger has warmed up. (2 to 5 min.) (HOT
KEEP program)
When outdoor temperature is low and humidity is high, the unit
sometimes performs defrosting automatically. Please wait. Dur-
ing defrosting, water or steam may escape from the outdoor
unit.
Airflow is not blown out when starting the DRY operation.
(RUN light is on)
The indoor fan may stop to prevent re-evaporation of dehumified
moisture and to save energy.
Some steam escapes during COOL operation.
This may occur if the room's temperature and humidity are very high. It
disappears as soon as the temperature and humidity decrease.
Restart is blocked for 3 minutes after you have stopped the op-
eration to protect the unit.
The three-minute protection timer in the microcomputer auto-
matically starts it up again.
Is there a power failure or a blown fuse?
Did you leave any doors or windows
open?
Are there too many people in the room?Is there a heat source in the room?
Is the air filter clean? (Not clogged?)
Has the power switch been turned off?
Have you set the thermostat at a suitable
temperature?
Is there any direct sunlight entering the
room?
You hear a slight gurgling sound.
This is caused by refrigerating liquid moving within the unit.
You hear a slight cracking sound. This is caused by heat expansion or contraction.
There is a slight smell.
Air blown out during operation may smell. This is caused by
tobacco or cosmetics adhering to the unit.
You hear a hissing or clicking sound.
This is caused by the operation of the refrigerant control valves
or electric components.
The air-conditioner does not work at all.
Has the timer been set in the “ON”
position?
RLC012A002A_EN_001-022 4/8/14, 11:0120
21


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