Operation Manual

36
Troubleshooting
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These cases are not troubles.
• The following cases are not air conditioner troubles but have some reasons. You may just continue using it.
Indoor unit
Outdoor unit
The HEAT operation stops suddenly
and a owing sound is heard.
• The outdoor unit is taking away the frost.
The HEAT operation starts after the frost on the outdoor
unit is removed. You should wait for about 4 to 12 minutes.
Operation does not start soon.
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When “ON/OFF” button was pressed soon
after operation was stopped.
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When the mode was reselected.
• This is to protect the air conditioner.
You should wait for about 3 minutes.
The ap does not start swinging
immediately.
• The air conditioner is adjusting the position of the
ap. The ap will start moving soon.
A sound is heard.
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A sound like a ow of water
• This sound is generated because the refrigerant in
the air conditioner is 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 ows in the air conditioner even if the
air conditioner is not working when the indoor units
in other rooms are in operation.
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Blowing sound
• This sound is generated when the ow of the
refrigerant in the air conditioner is switched over.
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Ticking sound
• This sound is generated when the size of the air conditioner
slightly expands or shrinks as a result of temperature changes.
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Whistling sound
• This sound is generated when refrigerant ows
during defrosting operation.
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Clicking sound during operation or idle time
• This sound is generated when the refrigerant control
valves or the electrical parts operate.
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Clopping sound
• This sound is heard from the inside of the air conditioner
when the exhaust fan is activated while the room doors
are closed. Open the window or turn off the exhaust fan.
The outdoor unit emits water or steam.
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In HEAT operation
• The frost on the outdoor unit melts into water or steam when the air conditioner is
in defrost operation.
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In COOL or DRY operation
• Moisture in the air condenses into water on the cool surface of outdoor unit piping
and drips.
The air conditioner stops generating
airow during operation.
• Once the set temperature is reached, the airow rate
is reduced and operation stopped in order to avoid
generating cool airow (during heating) or in order to
keep the humidity from rising (during cooling).
Operation will resume automatically when the indoor
temperature rises or falls.