Daikin FTXZ25NV1B Service Manual page 130

Operation Manual
FAQ
Indoor unit
The flaps do not start swing immediately.
• The air conditioner is adjusting the flaps position. The flaps
will start moving soon.
The air conditioner stops generating airflow
during operation.
• Once the set temperature is reached, the airflow rate is
reduced and operation stopped in order to avoid generating
cool airflow (during heating) or in order to keep the humidity
from rising (during cooling). Operation will resume
automatically when the indoor temperature rises or falls.
Operation does not start soon.
When AUTO button, direct operation buttons or FAN
ONLY button was pressed soon after operation was
stopped.
When the mode was reselected.
• This is to protect the air conditioner. You should wait for
about 3 minutes.
The HEATING operation stops suddenly and
a flowing sound is heard.
• The outdoor unit is taking away the frost. The HEATING
operation starts after the frost on the outdoor unit is
removed. You should wait for about 3 to 10 minutes.
Outdoor unit
The outdoor unit emits water or steam.
In HEATING operation
• The frost on the outdoor unit melts into water or steam when the air conditioner is in
defrost operation.
In COOLING or "SARARA" DRY operation
• Moisture in the air condenses into water on the cool surface of outdoor unit piping
and drips.
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Commonly occurring sounds
A hissing sound
• This is a sound generated when humidified air or
ventilated air is discharged.
• Operating sound may vary depending on the outdoor
temperature or humidity.
Roaring sound
• This is a sound of ventilating operation. (When ventilating
operation is combined with COOLING/HEATING
operation, it is possible to stop only ventilating operation.)
Hissing or cracking sound
• This is a sound of streamer discharge.
Roaring sound
• This is a sound of the dust brush rubbing the air filter to
remove dust from the air filter in CLEANING FILTER
operation.
Clicking sound while the air conditioner is or is not in
operation
• This is a sound of operation of the electric components or
valve that controls the refrigerant.
A sound like a flow of water
• This is a sound of the refrigerant flowing in the air
conditioner.
• 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.
Blowing sound
• This is a sound generated when the direction of the flow of
the refrigerant changes in the air conditioner.
Ticking sound
• This is a sound generated when the air conditioner slightly
expands or shrinks due to temperature change.
Clopping sound
• This is a sound that comes from the inside of the air
conditioner when the ventilating fan is operated with the
room closed. This sound may decrease when the window
is opened or the ventilating fan is stopped.
Whistling sound
• This is a sound generated when the refrigerant flows
during defrosting operation.
SiMT041311E
Page 24
Installation / Operation Manual