Installation manual
29
English
Case Explanation
Possible sounds.
Flowing water
Generated because the refrigerant in the air conditioner is fl owing.•
This is a pumping sound of the water in the air conditioner and heard when the water is •
pumped out from the air conditioner in cooling or drying operation.
The refrigerant fl ows in the air conditioner even if the air conditioner is not working when
•
the indoor units in other rooms are in operation.
Blowing
Generated when the fl ow of the refrigerant in the air conditioner is switched over.•
Pinging
Generated when the size of the air conditioner slightly expands or shrinks as a result of •
temperature changes.
Check again.
Please check again before calling a repair person.
Case Check
The air conditioner does not operate.
(OPERATION lamp is off.)
Is a breaker off or a fuse blown?•
Is there a power failure?•
Are batteries set in the remote controller?•
Is the timer setting correct?•
Cooling (Heating) effect is poor.
Are the air fi lters 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 airfl ow rate and the airfl ow direction set appropriately?•
Operation stopped suddenly.
(OPERATION lamp fl ashes.)
Are the air fi lters clean?•
Is there anything to block the air inlet or the outlet of the indoor and the outdoor units?•
Clean the air fi lters or take all obstacles away and turn the breaker off. Then turn it on •
again and try operating the air conditioner with the remote controller. If the lamp still
fl ashes, call the service shop where you purchased 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 operating mode and confi rm that the lamps fl ash.
Moreover, when the operating mode is in AUTO, set all indoor unit operating modes to
COOL or HEAT for a moment and check again that the lamps are normal.
If the lamps stop fl ashing after the above steps, there is no malfunction.
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An abnormal functioning happens during
operation.
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.
The louvers do not immediately swing.
The louvers move soon after startup.
The air conditioner is adjusting the louvers position. The louvers will start moving soon.•
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