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En-14
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. • Isthebreakerturnedon?
• Isthepowersupplyplugconnected?
• IstheONtimerset?Page10
The horizontal vane does not
move.
• Are the horizontal vane and the vertical vane
installedcorrectly?
• Isthefanguarddeformed?
• Whenthebreakeristurnedon,thehorizontal
vanes’positionwillberesetinaboutaminute.
After the reset has completed, the normal hori-
zontalvanes’operationresumes.Thesameis
true in the emergency cooling operation.
The unit cannot be operated for
about 3 minutes when restarted.
• This protects the unit according to instructions
from the microprocessor. Please wait.
Mist is discharged from the air
outlet of the indoor unit.
•
The cool air from the unit rapidly cools moisture
in the air inside the room, and it turns into mist.
The swing operation of the HORI-
ZONTAL VANE is suspended for a
while, then restarted.
• This is for the swing operation of the HORIZON-
TAL VANE to be performed normally.
Theairowdirectionchanges
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 blow-
ingdownfor0.5to1hour,thedirectionofthe
airowisautomaticallysettoupwardposition
to prevent water from condensing and dripping.
• In the heating operation, if the airow tem-
perature is too low or when defrosting is being
done, the horizontal vane is automatically set
to horizontal position.
The operation stops for about
10minutesintheheating
operation.
• Outdoor unit is in defrost.
Since this is completed in max. 10 minutes,
please wait. (When the outside temperature is
toolowandhumidityistoohigh,frostisformed.)
The unit starts operation by
itself when the main power is
turnedon,buthasn’treceived
sign from the remote controller.
• These models are equipped with an auto
restart 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”. Page10
The indoor unit discolors over
time.
• Althoughplasticturnsyellowduetotheinuence
of some factors such as ultraviolet light and
temperature, this has no effect on the product
functions.
The operation indicator lamp is
dim. The unit does not beep.
• IstheNIGHTmodeset? Page 9
Outdoor Unit
The fan of the outdoor unit does
not rotate even though the com-
pressor is running. Even if the
fan starts to rotate, it stops soon.
• When the outside temperature is low during
cooling operation, the fan operates intermittently
tomaintainsufcientcoolingcapacity.
Waterleaksfromtheoutdoor
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
makesiceformingontheoutdoorunitmeltand
drip down.
Whitesmokeisdischargedfrom
the outdoor unit.
• In the heating operation, vapor generated by the
defrostingoperationlookslikewhitesmoke.
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.
• Arethebatteriesexhausted? Page 5
• Is the polarity (+, -) of the batteries correct?
Page 5
• Are any buttons on the remote controller of other
electricappliancesbeingpressed?
Does not cool or heat
The room cannot be cooled or
heatedsufciently.
• Isthetemperaturesettingappropriate?
Page 6
• Is the fan setting appropriate? Please change
fan speed to High or Super High. Page 7
• Aretheltersclean? Page 13
•
Is the fan or heat exchanger of the indoor unit
clean?
Page 13
• Arethereanyobstaclesblockingtheairinletor
outletoftheindoororoutdoorunit?
• Isawindowordooropen?
• 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,
andthelike.
• IstheNIGHTmodeset? Page 9
The room cannot be cooled
sufciently.
• Whenaventilationfanoragascookerisused
in a room, the cooling load increases, resulting
inaninsufcientcoolingeffect.
• When the outside temperature is high, the cooling
effectmaynotbesufcient.
The room cannot be heated
sufciently.
• When the outside temperature is low, the heating
effectmaynotbesufcient.
Air does not blow out soon in
the heating operation.
• Please wait as the unit is preparing to blow out
warm air.
Airow
The air from the indoor unit
smells strange.
• Aretheltersclean? Page 13
• Is the fan or heat exchanger of the indoor unit
clean? Page 13
• The unit may suck in an odor adhering to the
wall, carpet, furniture, cloth, etc. and blow it out
with the air.
Sound
Crackingsoundisheard. • 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
rangehoodortheventilationfan,makingwater
owinginthedrainhosetospoutout.
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 on/off the
fan or the compressor.
Thesoundofwaterowingis
heard.
• This is the sound of refrigerant or condensed
waterowingintheunit.
Hissing sound is sometimes
heard.
• This is the sound when the ow of refrigerant
inside the unit is changed.
Timer
Weeklytimerdoesnotoperate
according to settings.
• IstheON/OFFtimerset?Page10
• 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 11
• When a power failure occurs and the main power
turns off, the indoor unit built-in clock will be
incorrect.Asaresult,theweeklytimermaynot
worknormally.
Be sure to place the remote controller where
the signal can be received by the indoor unit.
Page 5
The unit starts/stops the opera-
tion by itself.
• Istheweeklytimerset? Page 11
WHEN YOU THINK THAT TROUBLE HAS OCCURRED
JG79Y723H02.indd 14 2020/10/26 14:05:46
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