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When the Need Arises
32
English
Indoor unit
Outdoor unit
Operation does not start soon.
When the unit is turned on again soon
after being turned off.
When the mode was reselected.
•
This is to protect the air conditioner.
You should wait for about 3 minutes.
For COOLING ONLY models (outdoor
unit: RK models) using facility settings
•
For the purposes of protecting the compressor, it can take up
to 3 hours for operation to begin after the unit is turned on.
HEAT operation stops suddenly
and a flowing sound is heard.
•
The outdoor unit is defrosting. HEAT operation
starts after the frost on the outdoor unit has been
removed. This can take about 4 to 12 minutes.
The air conditioner stops generating
airflow during HEAT operation.
•
Once the set temperature is reached, the airflow rate
is reduced and operation stopped in order to avoid
generating a cool airflow. Operation will resume
automatically when the indoor temperature falls.
Operating sound is loud.
•
When frost forms on the heat exchanger of the outdoor unit, the operating sound level increases slightly.
Blowing sound
•
If the outdoor temperature is low, this sound is generated when the direction of the flow of the refrigerant in the piping
changes at the start of defrost operation, after HEAT operation is stopped and the room temperature is stabilized.
The outdoor unit emits water or steam.
In HEAT operation
•
The frost on the outdoor unit melts into water or steam when the air conditioner is in defrosting operation.
In COOL or DRY operation
•
Moisture in the air condenses into water on the cool surface of the outdoor unit piping and drips.
The flaps do not start swinging
immediately.
•
The air conditioner is adjusting the position of the
flaps. The flaps will start moving soon.
Different sounds are heard.
A sound like flowing water
•
This sound is generated because the refrigerant in the air
conditioner is flowing.
•
This is a pumping sound of the water in the air conditioner
and can be heard when the water is pumped out from the air
conditioner during COOL or DRY operation.
Blowing sound
•
This sound is generated when the flow of the refrigerant in
the air conditioner is switched over.
•
If the outdoor temperature is low, this sound is generated when the direction of
the flow of the refrigerant in the piping changes at the start of defrost operation,
after HEAT operation is stopped and the room temperature is stabilized.
Ticking sound
•
This sound is generated when the cabinet and frame of the
air conditioner slightly expand or shrink as a result of
temperature changes.
Whistling sound
•
This sound is generated when refrigerant flows during
defrosting operation.
Clicking sound during operation or idle time
•
This sound is generated when the refrigerant control valves
or the electrical parts operate.
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.
FAQ
01_EN_3P686868-1.indd 32
2022/06/01 15:31:35