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● OPERATING INSTRUCTIONS ●
W
HEN YOU THINK THAT TROUBLE HAS OCCURRED
Even if these items are checked, when the unit does not recover from the
trouble, stop using the air conditioner and consult your dealer.
Symptom
Indoor Unit
• Is the breaker turned on?
The unit cannot be operated.
• Is the power supply plug connected?
• Is the ON timer set?
The horizontal vane does not
• Are the horizontal vane and the vertical vane
installed correctly?
move.
• Is the fan guard deformed?
• When the breaker is turned on, the horizontal
vanes' position will be reset in about a minute.
After the reset has completed, the normal hori-
zontal vanes' operation resumes. The same is
true in the emergency cooling operation.
The unit cannot be operated for
• This protects the unit according to instructions
about 3 minutes when restarted.
from the microprocessor. Please wait.
Mist is discharged from the air
• The cool air from the unit rapidly cools moisture
outlet of the indoor unit.
in the air inside the room, and it turns into mist.
The swing operation of the HORI-
• This is for the swing operation of the HORIZON-
ZONTAL VANE is suspended for a
TAL VANE to be performed normally.
while, then restarted.
When SWING is selected in
• It is normal that the lower horizontal vane does
COOL/DRY/FAN mode, the
not move when SWING is selected in COOL/
lower horizontal vane does not
DRY/FAN mode.
move.
The airflow direction changes
• When the unit is operated in COOL or DRY
during operation.
mode, if the operation continues with air blow-
The direction of the horizontal
ing down for 0.5 to 1 hour, the direction of the
airflow is automatically set to upward position
vane cannot be adjusted with
the remote controller.
to prevent water from condensing and dripping.
The unit starts operation by
• These models are equipped with an auto
itself when the main power is
restart function. When the main power is
turned on, though it isn't oper-
turned off without stopping the unit with the
ated with the remote controller.
remote controller and is turned on again, the
unit starts operation automatically in the same
mode as the one set with the remote control-
ler just before the shutoff of the main power.
Refer to "AUTO RESTART FUNCTION".
• Although plastic turns yellow due to the influence
The indoor unit discolors over
time.
of some factors such as ultraviolet light and
temperature, this has no effect on the product
functions.
The ceiling and the walls around
• It is because the ceiling and the walls get dust
the indoor unit have smudges.
in the air due to air circulation by the air condi-
tioner.
Water leaks from the indoor
• Is the front panel closed accurately?
• Does water flow smoothly from the edge of the
unit.
drain hose?
Outdoor Unit
The fan of the outdoor unit does
• When the outside temperature is low during
not rotate even though the com-
cooling operation, the fan operates intermittently
to maintain sufficient cooling capacity.
pressor is running. Even if the
fan starts to rotate, it stops soon.
Water leaks from the outdoor
• During COOL and DRY operations, pipe or pipe
unit.
connecting sections are cooled and this causes
water to condense.
Remote controller
• Are the batteries exhausted?
The display on the remote
• Is the polarity (+, -) of the batteries correct?
controller does not appear or it
is dim. The indoor unit does not
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respond to the remote control
• Did you press the reset button after replacing the
signal.
batteries?
• Is the setting of multiple indoor units' installation the
same as before replacing the batteries?
• Are any buttons on the remote controller of other
electric appliances being pressed?
• The indoor unit may not receive the signal well
depending on the condition in the room. Get
close to the indoor unit and operate the remote
controller.
En-13
Explanation & Check points
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Symptom
Does not cool
• Is the temperature setting appropriate?
The room cannot be cooled
sufficiently.
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• Is the fan setting appropriate? Please change
fan speed to High or Super High.
• Are the filters clean?
• Is the fan or heat exchanger of the indoor unit
clean?
• Are there any obstacles blocking the air inlet or
outlet of the indoor or outdoor unit?
• Is a window or door open?
• It may take a certain time to reach the setting
temperature or may not reach that depending on
the size of the room, the ambient temperature,
and the like.
• 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 temperature is high, the cooling
effect may not be sufficient.
Airflow
• Are the filters clean?
The air from the indoor unit
smells strange.
• Is the fan or heat exchanger of the indoor unit
clean?
• The unit may suck in an odor adhering to the
wall, carpet, furniture, cloth, etc. and blow it out
with the air.
Sound
Cracking sound is heard.
• This sound is generated by the expansion/con-
traction of the front panel, etc. due to change in
temperature.
"Burbling" sound is heard.
• This sound is heard when the outside air is
absorbed from the drain hose by turning on the
range hood or the ventilation fan, making water
flowing in the drain hose to spout out.
This sound is also heard when the outside air
blows into the drain hose in case the outside
wind is strong.
Mechanical sound is heard
• This is the switching sound in turning on/off the
from the indoor unit.
fan or the compressor.
The sound of water flowing is
• This is the sound of refrigerant or condensed
water flowing in the unit.
heard.
• This is the sound when the flow of refrigerant
Hissing sound is sometimes
heard.
inside the unit is changed.
Timer
Weekly timer does not operate
• Is the ON/OFF timer set?
• Transmit the setting information of the weekly
according to settings.
timer to the indoor unit again. When the infor-
mation is successfully received, a long beep will
sound from the indoor unit. If information fails to
be received, 3 short beeps will be heard. Ensure
information is successfully received.
• When a power failure occurs and the main power
turns off, the indoor unit built-in clock will be
incorrect. As a result, the weekly timer may not
work normally.
Be sure to place the remote controller where
the signal can be received by the indoor unit.
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• Is the weekly timer set?
The unit starts/stops the opera-
tion by itself.
Others
The aluminum fin on the edge
• This is the coating resin discolored due to weld-
of the heat exchanger is dis-
ing heat when the heat exchanger was being
colored as if it is burnt.
produced.
The operation of the air conditioner is not the
cause of the discoloration.
It affects neither the performance of the heat
exchanger nor the use of the air conditioner.
In the following cases, stop using the air conditioner and consult your dealer.
• When water leaks or drips from the indoor unit.
• When the operation indicator lamp blinks.
• When the breaker trips frequently.
• The remote control signal is not received in a room where an electronic ON/
OFF type fluorescent lamp (inverter-type fluorescent lamp, etc.) is used.
• Operation of the air conditioner interferes with radio or TV reception. An ampli-
fier may be required for the affected device.
• When an abnormal sound is heard.
• When any refrigerant leakage is found.
Explanation & Check points
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