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En-12
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 Explanation & Check points
Indoor Unit
The unit cannot be operated.
• Is the breaker turned on?
• Is the power supply plug connected?
• Is the ON timer set? Page 8
All LED lamps on the indoor
unit are blinking.
• Are the horizontal vanes installed correctly?
Page 11
The horizontal vane does not
move.
• Are the horizontal vane and the vertical vane
installed correctly? Page 11
• Is the fan guard deformed?
The unit cannot be operated for
about 3 minutes when restarted.
•
This protects the unit according to instruc-
tions from the microprocessor. Please wait.
Mist is discharged from the air
outlet of the indoor unit.
• The cool air from the unit rapidly cools mois-
ture in the air inside the room, and it turns
into mist.
The swing operation of the
HORIZONTAL VANE is
suspended for a while, then
restarted.
• This is for the swing operation of the HORI-
ZONTAL VANE to be performed normally.
The airfl ow direction changes
during operation.
The direction of the horizontal
vane cannot be adjusted with
the remote controller.
• When the unit is operated in COOL or DRY
mode, if the operation continues with air
blowing down for 0.5 to 1 hour, the direction
of the airfl ow is automatically set to horizon-
tal position to prevent water from condensing
and dripping.
• In the heating operation, if the airfl ow tem-
perature is too low or when defrosting is be-
ing done, the horizontal vane is automatically
set to horizontal position.
The operation stops for about
10 minutes in the heating
operation.
• Outdoor unit is in defrost.
Since this is completed in max. 10 minutes,
please wait. (When the outside temperature is too
low and humidity is too high, frost is formed.)
The unit starts operation by
itself when the main power is
turned on, but isn’t received
sign from the remote control-
ler.
• These models are equipped with an auto re-
start function. When the main power is turned
off without stopping the unit with the 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” Page 5 .
In COOL/DRY mode, when
the room temperature reach-
es near the set temperature,
the outdoor unit stops, then
the indoor unit operates at
low speed.
• When the room temperature rises and the
outdoor unit turns on, the indoor fan starts
running according to the settings on the
remote controller.
The indoor unit discolors over
time.
• Although plastic turns yellow due to the infl u-
ence of some factors such as ultraviolet light
and temperature, this has no effect on the
product functions.
Outdoor Unit
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 dur-
ing cooling operation, the fan operates
intermittently to maintain suffi cient cooling
capacity.
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, water condensed
on the heat exchanger drips down.
• In the heating operation, the defrosting
operation makes ice forming on the outdoor
unit melt and drip down.
White smoke is discharged
from the outdoor unit.
•
In the heating operation, vapor generated by the
defrosting operation looks like white smoke.
Symptom Explanation & Check points
Remote controller
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 4
• Is the polarity (+, -) of the batteries correct?
Page 4
• Are any buttons on the remote controller of
other electric appliances being pressed?
Does not cool or heat
The room cannot be cooled
or heated suffi ciently.
• Is the temperature setting appropriate?
Page 5
• Is the fan setting appropriate? Please change
fan speed to High or Super High. Page 6
• Are the fi lters clean? Page 11
• Is the fan or heat exchanger of the indoor unit
clean? Page 11
• 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 tempera-
ture, and the like.
The room cannot be cooled
suffi ciently.
• When a ventilation fan or a gas cooker is
used in a room, the cooling load increases,
resulting in an insuffi cient cooling effect.
• When the outside temperature is high, the
cooling effect may not be suffi cient.
The room cannot be heated
suffi ciently.
• When the outside temperature is low, the
heating effect may not be suffi cient.
Air does not blow out soon in
the heating operation.
• Please wait as the unit is preparing to blow
out warm air.
Poor cooling or heating
performance.
• Do you have an arrangement with your elec-
tric company for Demand Response?
Airfl ow
The air from the indoor unit
smells strange.
• Are the fi lters clean? Page 11
• Is the fan or heat exchanger of the indoor unit
clean? Page 11
• 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/
contraction 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 fl owing 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
from the indoor unit.
• This is the switching sound in turning off/on
the fan or the compressor.
The sound of water fl owing
is heard.
• This is the sound of refrigerant or condensed
water fl owing in the unit.
Hissing sound is sometimes
heard.
• This is the sound when the fl ow of refrigerant
inside the unit is changed.
Timer
Weekly timer does not oper-
ate according to settings.
• Is the ON/OFF timer set? Page 8, 9
• Transmit the setting information of the weekly
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. Page 9
• 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.
Page 3
The unit starts/stops the
operation by itself.
• Is the weekly timer set? Page 9
WHEN YOU THINK THAT TROUBLE HAS OCCURRED
JG79A991H01_en_final.indd 12 2015/06/08 17:52:47
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