13
WHEN YOU THINK THAT TROUBLE HAS OCCURED
BEFORE CONTACTING THE SERVICE REPRE-
SENTATIVE, CHECK THE FOLLOWING AGAIN
Question
Check points
The air conditioner
cannot be operated.
• Is the breaker turned on?
• Is the fuse blown?
• Is the ON timer set? (Page 9)
All LED lamps on the
indoor unit are blinking.
• Is the horizontal vane attached to the indoor unit
correctly? (Page 12)
The horizontal vane
does not move.
• Are the horizontal vane and the vertical vane
attached to the indoor unit correctly? (Page 12)
• Is the fan guard deformed?
The room cannot be
cooled or heated
suf
fi
ciently.
• Is the temperature setting correct? (Page 7)
• Is the
fi
lter clean? (Page 10)
• Is the fan of the indoor unit clean? (Page 12)
• Are there any obstacles blocking the air inlet or
outlet of the indoor or outdoor unit?
• Is a window or door open?
The air from the indoor
unit smells strange.
• Is the
fi
lter clean? (Page 10)
• Is the fan of the indoor unit clean? (Page 12)
The display on the
remote controller does
not appear or it is dim.
The indoor unit does
not respond to the
remote control signal.
• Are the batteries exhausted? (Page 5)
• Is the polarity (+, -) of the batteries correct?
(Page
5)
• Are any buttons on the remote controller of other
electric appliances being pressed?
When a power failure
occurs.
• Does the air conditioner start operating again?
If the air conditioner had operated before the
power failure, as these models are equipped
with an auto restart function, the air conditioner
should start operating again. (Refer to Descrip-
tion of “AUTO RESTART FUNCTION” on page
6.)
Even if the above items are checked, when the air conditioner does not
recover from the trouble, stop using the air conditioner and consult your
dealer.
In the following cases, stop using the air conditioner and consult your dealer.
• When water leaks or drops from the indoor unit.
• When the left operation indicator lamp blinks.
• When the breaker trips frequently.
• The remote control signal may not be received in a room where an electronic
ON/OFF type
fl
uorescent lamp (inverter-type
fl
uorescent lamp, etc.) is used.
• Operation of the air conditioner may interfere with radio or TV reception in
areas where the reception is weak. An ampli
fi
er may be required for the
affected device.
• When thunder is heard, stop operation and disconnect the power supply plug
or turn off the breaker. Otherwise, the electrical parts may be damaged.
Question
Answer (not a malfunction)
The air conditioner
cannot be operated
for about 3 minutes
when restarted.
• This protects the air conditioner according to in-
structions from the microprocessor. Please wait.
Cracking sound is
heard.
• This sound is generated by the expansion/con-
traction of the front panel, etc. due to change in
temperature.
The air from the indoor
unit smells strange.
• The air conditioner may suck in an odor adhering
to the wall, carpet, furniture, cloth, etc. and blow
it out with the air.
The fan of the outdoor
unit does not rotate
even though the
compressor is running.
Even if the fan starts to
rotate, it stops soon.
• When the outside temperature is low, the fan
may not operate to maintain suf
fi
cient cooling
capacity.
The sound of water
fl
owing is heard.
• This is the sound of refrigerant
fl
owing inside the
air conditioner.
• This is the sound of condensed water
fl
owing in
the heat exchanger.
• This is the sound of the heat exchanger defrost-
ing.
The sound as burbling
is heard.
• This sound is heard when the outside air is
absorbed from the drain hose in turning on the
range hood or the ventilation fan and that makes
water
fl
owing in the drain hose spout out.
This sound is also heard when the outside air
blows into the drain hose in case the outside
wind is strong.
The room cannot be
cooled suf
fi
ciently.
• When a ventilation fan or a gas cooker is used in
a room, the cooling load increases, resulting in
an insuf
fi
cient cooling effect.
• When the outside air temperature is high, the
cooling effect may not be suf
fi
cient.
Mist is discharged from
the air outlet of the
indoor unit.
• The cool air from the air conditioner rapidly cools
moisture in the air inside the room, and it turns
into mist.
Mechanical sound is
heard from the indoor
unit.
• This is the switching sound in turning on/off the
fan or the compressor.
The swing operation
of the HORIZONTAL
VANE is suspended for
about 15 seconds, then
restarted.
• This is for the swing operation of the HORIZON-
TAL VANE to be performed normally.
Question
Answer (not a malfunction)
The air
fl
ow direction
changes during
operation.
The direction of the
horizontal vane cannot
be adjusted with the
remote controller.
• When the air conditioner is operated in COOL
or DRY mode, if the operation continues with
air blowing down for 1 hour, the direction of the
air
fl
ow is automatically set to position (1) to
prevent condensed water from dropping.
• In the heating operation, if the air
fl
ow tempera-
ture is too low or when defrosting is being done,
the horizontal vane position is automatically set
to horizontal.
Water leaks from the
outdoor unit.
• During COOL and DRY operations, pipe or pipe
connecting sections are cooled and this causes
water to condense.
• In the heating operation, the defrosting operation
makes water frozen on the outdoor unit melt and
drip down.
• In the heating operation, water drips from the heat
exchanger. This is not a malfunction. However, if
you have any trouble with water dripping, consult
your dealer for drainage work. Please note that
we cannot provide drainage work in such climate
that the outdoor unit may get frosted.
White smoke is
discharged from
the outdoor unit.
• In the heating operation, vapor generated by the
defrosting operation looks like white smoke.
Air does not blow out
soon in the heating
operation.
• Please wait as the air conditioner is preparing to
blow out warm air.
The operation is
stopped for about
10 minutes in the
heating operation.
• Defrosting of the outdoor unit is being done
(Defrosting operation).
Since this is completed in 10 minutes, please
wait. (When the external temperature is too low
and humidity is too high, frost is formed.)
Hissing sound is
sometimes heard.
• This is the sound when the
fl
ow of refrigerant
inside the air conditioner is switched.
The room cannot be
heated suf
fi
ciently.
• When the outside air temperature is low, the
heating effect may not be suf
fi
cient.
In a multi-unit system,
the indoor unit which is
not operating becomes
warm and a sound,
similar to water
fl
owing,
is heard from the unit.
• A small amount of refrigerant continues to
fl
ow
into the indoor unit even though it is not operat-
ing.
The air conditioner
starts the operation
only with the main
power turned on,
though you do not
operate the unit with
the remote controller.
• These models are equipped with an auto restart
function. When the main power is turned off
without stopping the air conditioner with the
remote controller and is turned on again, the
air conditioner will start operation automati-
cally in the same mode as the one set with the
remote controller just before the shutoff of the
main power.
