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Troubleshooting
Please carry out the following checks before making a service call.
Has the power switch been turned off?
Have you set the thermostat at a suitable
temperature?
Is there any direct sunlight entering the
room?
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.
Notice
The unit does not restart immediately after you have stopped it.
Airfl ow is not blown out when starting the HEATING operation.
Airfl ow is not blown out for 5 to 15 min. or blown out not
warm wind for a moment at HEATING operation.
Airfl ow is not blown out when starting the DRY operation.
Some steam escapes during COOL operation.
There is a slight smell.
You hear a slight gurgling sound.
You hear a slight cracking sound.
You hear a hissing or clicking sound.
After a power cut, the unit does not restart even if power has
been restored.
Remote control signals are not received.
Moisture may form on the air outlet grills.
Whistling noise is heard from the outdoor unit.
Fan will not stop immediately after unit operation was
stopped.
RUN light stays on even though operation was stopped.
The air-conditioner does not work at all.
Has the timer been set in the "ON"
position?
Poor cooling or heating
Is the air fi lter clean? (Not clogged?)
Poor cooling
Is there a heat source in the room?
(RUN light is on)
RUN light blinks slowly
(1.5 sec ON, 0.5 sec OFF)
RUN light blinks slowly
(1.5 sec ON, 0.5 sec OFF)
(RUN light is on)
– 20 –
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?
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 automati-
cally starts it up again.
Airfl ow 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.
The indoor fan may stop to prevent re-evaporation of dehumidifi ed
moisture and to save energy.
This may occur if the room's temperature and humidity are very high. It
disappears as soon as the temperature and humidity decrease.
Air blown out during operation may smell. This is caused by
tobacco or cosmetics adhering to the unit.
This is caused by refrigerating liquid moving within the unit.
This is caused by heat expansion or contraction.
This is caused by the operation of the refrigerant control valves
or electric components.
If the auto restart function is not set, the unit will not restart au-
tomatically. Use the remote control to start the operation again.
Remote control signals may not be received if the signal receiver on
the air-conditioner is exposed to direct sunlight or other bright light.
If so, cut out the sunlight or reduce the other light.
If the unit is operated for a long time in high humidity, moisture
may form on the air outlet grills and start dripping.
The noise means that the revolution speed of the compressor is
increasing or decreasing.
Indoor fan
: Fan will not stop after 2 hours if set to CLEAN operation.
Outdoor fan : Fan will not stop about a 1 minute period in order to
protect the unit.
The RUN light illuminates during CLEAN operation.
Run light turns off when CLEAN operation ends.
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