Operation Manual

37
• Troubleshooting measures are classified into the following two types on a remedial basis.
Take an appropriate measure according to the symptom.
Not trouble
• These cases are not troubles.
Check
• Please check again before calling
a repair person.
The air conditioner does not operate.
(OPERATION lamp is off.)
Cooling (Heating) effect is poor.
An abnormal functioning happens
during operation.
Operation stopped suddenly.
(OPERATION lamp flashes.)
Operation stopped suddenly.
(OPERATION lamp is on.)
Mist comes out of the indoor unit.
• Hasn’t a breaker turned off or a fuse blown?
• Isn’t it a power failure?
• Are batteries set in the remote controller?
• Is the timer setting correct?
• Are the air filters clean?
• Is there anything to block the air inlet or the outlet of the
indoor and the outdoor units?
• Is the temperature setting appropriate?
• Are the windows and doors closed?
• Are the airflow rate and the airflow direction set
appropriately?
• The air conditioner may malfunction with lightning or
radio waves. Turn the breaker off, turn it on again and try
operating the air conditioner with the remote controller.
• Are the air filters clean?
Clean the air filters.
• Is there anything to block the air inlet or the outlet of the
indoor and the outdoor units?
• Turn the bleaker off and take all obstacles away. Then
turn it on again and try operating the air conditioner with
the remote controller. If the lamp still flashes, call the
service shop where you bought the air conditioner.
• Are operation modes all the same for indoor units
connected to outdoor units in the multi system?
If not, set all indoor units to the same operation mode and
confirm that the lamps flash.
Moreover, when the operation mode is in AUTO, set all
indoor unit operation modes to COOL or HEAT for a
moment and check again that the lamps are normal. If the
lamps stop flashing after the above steps, there is no
malfunction.
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• For system protection, the air conditioner may stop
operating on a sudden large voltage fluctuation. It
automatically resumes operation in about 3 minutes.
• This happens when the air in the room is cooled into mist
by the cold airflow during COOL operation.
• This is because the air in the room is cooled by the heat
exchanger and becomes mist during defrost operation.
Troubleshooting