15
BEFORE CONTACTING THE SERVICE REPRE-
SENTATIVE, CHECK THE FOLLOWING AGAIN
WHEN YOU THINK THAT TROUBLE HAS OCCURRED
Question
The air conditioner cannot
be operated.
All LED lamps on the indoor
unit are blinking.
The horizontal vane does
not move.
The room cannot be cooled
or heated sufficiently.
The air from the indoor unit
smells strange.
The display on the remote
controller does not appear
or it is dim. The indoor unit
does not respond to the
remote control signal.
When a power failure oc-
curs.
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 POWER lamp blinks.
• When the breaker trips frequently.
• The remote control signal may not be received in a room where an electronic
ON/OFF type fluorescent lamp (inverter-type fluorescent lamp, etc.) is used.
• Operation of the air conditioner may interfere with radio or TV reception in areas
where the reception is weak. An amplifier 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.
Answer (not a malfunction)
• This protects the air conditioner according to
instructions from the microprocessor. Please
wait.
• This sound is generated by the expansion/con-
traction of the front panel, etc. due to change in
temperature.
• The air conditioner may suck in an odor adhering
to the wall, carpet, furniture, cloth, etc. and blow
it out with the air.
• Is the PLASMA DEODORIZING filter unit clean?
Clean the unit if it’s dirty and replace the deodor-
izing ceramic filter with new one if the dirt on the
filter is noticeable.
• During PLASMA operation, you may smell ozone
that is generated in small quantities from the
PLASMA DEODORIZING/AIR PURIFYING filter
units. This is not a malfunction.
• When the outside temperature is low, the fan
may not operate to maintain sufficient cooling
capacity.
• This is the sound of refrigerant flowing inside the
air conditioner.
• This is the sound of condensed water flowing in
the heat exchanger.
• This is the sound of the heat exchanger defrost-
ing.
• 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 flowing 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.
• When a ventilation fan or a gas cooker is used
in a room, the cooling load increases, resulting
in an insufficient cooling effect.
• When the outside air temperature is high, the
cooling effect may not be sufficient.
• The cool air from the air conditioner rapidly cools
moisture in the air inside the room, and it turns
into mist.
• This is the switching sound in turning on/off the
fan or the compressor.
Question
The air conditioner cannot
be operated for about 3
minutes when restarted.
Cracking sound is heard.
The air from the indoor unit
smells strange.
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.
The sound of water flowing
is heard.
The sound as burbling is
heard.
The room cannot be cooled
sufficiently.
Mist is discharged from
the air outlet of the indoor
unit.
Mechanical sound is heard
from the indoor unit.
Question
The air flow direction changes
during operation. The direc-
tion of the horizontal vane
cannot be adjusted with the
remote controller.
Water leaks from the outdoor
unit.
White smoke is discharged
from the outdoor unit.
Air does not blow out soon
in the heating operation.
The operation is stopped
for about 10 minutes in the
heating operation.
Hissing sound is some-
times heard.
The room cannot be heated
sufficiently.
In a multi-unit system, the
indoor unit which is not
operating becomes warm
and a sound, similar to water
flowing, is heard from the
unit.
The air conditioner starts
the operation only with the
main power turned on,
though you do not operate
the unit with the remote
controller.
Answer (not a malfunction)
• 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
flow is automatically set to position (1) to prevent
condensed water from dropping.
• In the heating operation, if the air flow temperature
is too low or when defrosting is being done, the
horizontal vane position is automatically set to
horizontal.
• 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.
• In the heating operation, vapor generated by the
defrosting operation looks like white smoke.
• Please wait as the air conditioner is preparing
to blow out warm air.
• 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.)
• This is the sound when the flow of refrigerant
inside the air conditioner is switched.
• When the outside air temperature is low, the
heating effect may not be sufficient.
• A small amount of refrigerant continues to flow
into the indoor unit even though it is not operat-
ing.
• 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 automatically in the same mode as the
one set with the remote controller just before the
shutoff of the main power.
Check points
• Is the breaker turned on?
• Is the fuse blown?
• Is the ON timer set? (Page 11)
• Is the horizontal vane attached to the indoor unit
correctly? (Page 14)
• Are the horizontal vane and the vertical vane
attached to the indoor unit correctly? (Page 14)
• Is the fan guard deformed?
• Is the temperature setting correct? (Page 7)
• Is the filter clean? (Page 12)
• Is the fan of the indoor unit clean? (Page 14)
• Are there any obstacles blocking the air inlet or
outlet of the indoor or outdoor unit?
• Is a window or door open?
• Is the filter clean? (Page 12)
• Is the fan of the indoor unit clean? (Page 14)
• 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?
• 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 Description
of “AUTO RESTART FUNCTION” on page 6.)