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EN-13
● OPERATING INSTRUCTIONS ●
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
The horizontal vane does not
move.
• Are the horizontal vane and the vertical vane
installed correctly?
• 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
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 moisture
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 blow-
ing down for 0.5 to 1 hour, the direction of the
airfl ow is automatically set to upward 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 hasn’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 11
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 eff ect on the
product functions.
Multi system
The indoor unit which is not
operating becomes warm and
a sound, similar to water fl ow-
ing, is heard from the unit.
• A small amount of refrigerant continues to
fl ow into the indoor unit even though it is not
operating.
When heating operation is
selected, operation does not
start right away.
• When operation is started during defrosting
of outdoor unit is done, it takes a few minutes
(max. 10 minutes) to blow out warm air.
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 during
cooling operation, the fan operates intermit-
tently 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.
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 5
• Is the polarity (+, -) of the batteries correct?
Page 5
• Are any buttons on the remote controller of
other electric appliances being pressed?
Symptom Explanation & Check points
Does not cool or heat
The room cannot be cooled
or heated suffi ciently.
• Is the temperature setting appropriate?
Page 6
• Is the fan setting appropriate? Please change
fan speed to High or Super High.
Page 7
• Are the fi lters clean? Page 12
• 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.
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 eff ect.
• When the outside temperature is high, the
cooling eff ect may not be suffi cient.
The room cannot be heated
suffi ciently.
• When the outside temperature is low, the
heating eff ect 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.
Airfl ow
The air from the indoor unit
smells strange.
• Are the fi lters clean? Page 12
• 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/
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 on/off
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
• 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 10
• 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 4
The unit starts/stops the
operation by itself.
• Is the weekly timer set? Page 10
In the following cases, stop using the air conditioner and consult your dealer.
• When water leaks or drips from the indoor unit.
• When the left 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 fl uorescent lamp (inverter-type fl uorescent lamp, etc.) is used.
• Operation of the air conditioner interferes with radio or TV reception. An ampli-
fi er may be required for the aff ected device.
• When an abnormal sound is heard.
• When any refrigerant leakage is found.
WHEN YOU THINK THAT TROUBLE HAS OCCURRED
JG79Y725H01_01En.indd 13 2020/03/09 10:23:31
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