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Troubleshooting
Please carry out the following checks before making a service call.
Notice
The unit does not restart immediately after you
have stopped it. (RUN light is on)
Restart is blocked for 3 minutes after you have stopped the operation to protect the unit.
The three-minute protection timer in the microcomputer automatically starts it up again.
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.
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 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.
You hear a hissing or clicking sound.
This is caused by the operation of the refrigerant control valves or electric components.
After a power cut, the unit does not restart even
if power has been restored.
If the auto restart function is not set, the unit will not restart automatically. Use the remote
control to start the operation again.
Remote control signals are not received.
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.
Moisture may form on the air outlet grills.
If the unit is operated for a long time in high humidity, moisture may form on the air outlet
grills and start dripping.
Whistling noise is heard from the outdoor unit.
The noise means that the revolution speed of the compressor is increasing or decreasing.
Fan will not stop immediately after unit
operation was stopped.
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.
RUN light stays on even though operation was
stopped.
The RUN light illuminates during CLEAN operation.
Run light turns off when CLEAN operation ends.
Contact your dealer
Turn off the power switch immediately and inform your dealer in any of the following situations: ■
The air-conditioner does not work at all.
Has the power switch been turned off?
Has the timer been set in the “ON” position?
Is there a power failure or a blown fuse?
Poor cooling
Have you set the thermostat at a suitable temperature?
Is the air filter clean? (Not clogged?)
Did you leave any doors or windows open?
Is there any direct sunlight entering the room?
Is there a heat source in the room?
Are there too many people in 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 “Notice”
below, or if things happen as shown on “Contact your dealer” below, 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.
The cable becomes extremely hot. •
The covering of the cable is cracked.
•
The fuse or switch blows continuously.
•
A switch does not activate properly.
•
You hear a strange noise during operation.
•
The TV, radio or other equipment starts to malfunction.
•
When abnormalities occur, turn off the power supply immediately
•
and turn it on after 3 minutes. Restart the operation with ON/OFF
button of the remote control and the abnormalities still continue.
CAUTION
If the power cord becomes damaged, ask •
your dealer or a qualified engineer to install
the replacement to avoid accidents.
Self diagnosis function Page 57
The RUN and TIMER lights on the unit display section blink quickly •
(0.5 sec. ON; 0.5 sec. OFF) and do not work.
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