Mitsubishi Electric MSZ-GS07VF User manual

English
OPERATING INSTRUCTIONS For user
• To use this unit correctly and safely, be sure to read these operating
instructions before use.
SPLIT-TYPE AIR CONDITIONERS
INDOOR UNIT
MSZ-GS07VF MSZ-GS09VF MSZ-GS12VF
MSY-GS07VF MSY-GS09VF MSY-GS12VF
MSZ-GS18VF
MSY-GS18VF
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● OPERATING INSTRUCTIONS ●
WARNING
(Risk of fi re)
This unit uses a fl ammable refrigerant.
If refrigerant leaks and comes in contact with fi re or heating part, it will create
harmful gas and there is risk of fi re.
Read the OPERATING INSTRUCTIONS carefully before operation.
Service personnel are required to carefully read the OPERATING INSTRUCTIONS and
INSTALLATION MANUAL before operation.
Further information is available in the OPERATING INSTRUCTIONS, INSTALLATION
MANUAL, and the like.
Meanings of symbols displayed on indoor unit and/or outdoor unit
• Since rotating parts and parts which could cause an electric shock are used in this product, be sure to read these
“Safety Precautions” before use.
• Since the cautionary items shown here are important for safety, be sure to observe them.
• After reading this manual, keep it together with the installation manual in a handy place for easy reference.
• Be sure to receive a guarantee card from your dealer and check that the purchased date and shop name, etc. are
entered correctly.
Marks and their meanings
WARNING : Incorrect handling could cause serious hazard, such as death, serious injury, etc. with a high
probability.
CAUTION : Incorrect handling could cause serious hazard depending on the conditions.
■SAFETY PRECAUTIONS 1
■NAME OF EACH PART 5
■PREPARATION BEFORE OPERATION 7
■SELECTING OPERATION MODES 8
■FAN SPEED AND AIRFLOW DIRECTION ADJUSTMENT 10
■FAST COOLING OPERATION 11
■SLEEP OPERATION 12
■TIMER OPERATION (ON/OFF TIMER) 13
■EMERGENCY OPERATION 13
■CLEANING 14
■WHEN YOU THINK THAT TROUBLE HAS OCCURRED 17
■ERROR CODE DISPLAY MODE 20
■WHEN THE AIR CONDITIONER IS NOT GOING TO BE USED FOR A LONG TIME 21
■INSTALLATION PLACE AND ELECTRICAL WORK 22
■SPECIFICATIONS 22
CONTENTS
SAFETY PRECAUTIONS
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Meanings of symbols used in this manual
:Be sure not to do. :Danger of electric shock. Be careful.
:Be sure to follow the instruction. :Be sure to disconnect the power supply plug from
the power outlet.
:Never insert your fi nger or stick, etc. :Be sure to shut off the power.
:Never step onto the indoor/outdoor unit and do
not put anything on them. :Risk of fi re
WARNING
Do not connect the power cord to an intermediate point, use an extension cord, or connect
multiple devices to a single AC outlet.
• This may cause overheating, fi re, or electric shock.
Make sure the power plug is free of dirt and insert it securely into the outlet.
• A dirty plug may cause fi re or electric shock.
Do not bundle, pull, damage, or modify the power cord, and do not apply heat or place heavy
objects on it.
• This may cause fi re or electric shock.
Do not turn the breaker OFF/ON or disconnect/connect the power plug during operation.
• This may create sparks, which can cause fi re.
• After the indoor unit is switched OFF with the remote controller, make sure to turn the breaker OFF
or disconnect the power plug.
Do not expose your body directly to cool air for a prolonged length of time.
• This could be detrimental to your health.
The unit should not be installed, relocated, disassembled, altered, or repaired by the user.
• An improperly handled air conditioner may cause fi re, electric shock, injury, or water leakage, etc.
Consult your dealer.
• If the power supply cord is damaged, it must be replaced by the manufacturer or its service agent
in order to avoid a hazard.
When installing, relocating, or servicing the unit, make sure that no substance other than the
specifi ed refrigerant (R32) enters the refrigerant circuit.
• Any presence of foreign substance such as air can cause abnormal pressure rise and may result
in explosion or injury.
• The use of any refrigerant other than that specifi ed for the system will cause mechanical failure,
system malfunction, or unit breakdown. In the worst case, this could lead to a serious impediment
to securing product safety.
This appliance is not intended for use by persons (including children) with reduced physical,
sensory or mental capabilities, or lack of experience and knowledge, unless they have been
given supervision or instruction concerning use of the appliance by a person responsible for
their safety.
Children should be supervised to ensure that they do not play with the appliance.
Do not insert your fi nger, a stick, or other objects into the air inlet or outlet.
• This may cause injury, since the fan inside rotates at high speeds during operation.
In case of an abnormal condition (such as a burning smell), stop the air conditioner and discon-
nect the power plug or turn the breaker OFF.
• A continued operation in the abnormal state may cause a malfunction, fi re, or electric shock. In this
case, consult your dealer.
When the air conditioner does not cool or heat, there is a possibility of refrigerant leakage. If
any refrigerant leakage is found, stop operations and ventilate the room well and consult your
dealer immediately. If a repair involves recharging the unit with refrigerant, ask the service
technician for details.
• The refrigerant used in the air conditioner is not harmful. Normally, it does not leak. However, if
refrigerant leaks and comes in contact with fi re or heating part of such a fan heater, kerosene heater,
or cooking stove, it will create harmful gas and there is risk of fi re.
SAFETY PRECAUTIONS
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● OPERATING INSTRUCTIONS ●
WARNING
The user should never attempt to wash the inside of the indoor unit. Should the inside of the
unit require cleaning, contact your dealer.
• Unsuitable detergent may cause damage to plastic material inside the unit, which may result in
water leakage. Should detergent come in contact with electrical parts or the motor, it will result in
a malfunction, smoke, or fi re.
• The appliance shall be stored in a room without continuously operating ignition sources (for example:
open fl ames, an operating gas appliance or an operating electric heater).
• Be aware that refrigerants may not contain an odour.
• Do not use means to accelerate the defrosting process or to clean the appliance, other than those
recommended by the manufacturer.
• Do not pierce or burn.
The indoor unit must be installed in rooms which exceed the fl oor space specifi ed. Please
consult your dealer.
CAUTION
Do not touch the air inlet or the aluminum fi ns of the indoor/outdoor unit.
• This may cause injury.
Do not use insecticides or fl ammable sprays on the unit.
• This may cause a fi re or deformation of the unit.
Do not expose pets or houseplants to direct airfl ow.
• This may cause injury to the pets or plants.
Do not place other electric appliances or furniture under the indoor/outdoor unit.
• Water may drip down from the unit, which may cause damage or malfunction.
Do not leave the unit on a damaged installation stand.
• The unit may fall and cause injury.
Do not step on an unstable bench to operate or clean the unit.
• This may cause injury if you fall down.
Do not pull the power cord.
• This may cause a portion of the core wire to break, which may cause overheating or fi re.
Do not charge or disassemble the batteries, and do not throw them into a fi re.
• This may cause the batteries to leak, or cause a fi re or explosion.
Do not operate the unit for more than 4 hours at high humidity (80% RH or more) and/or with
windows or outside door left open.
• This may cause the water condensation in the air conditioner, which may drip down, wetting or
damaging the furniture.
• The water condensation in the air conditioner may contribute to growth of fungi, such as mold.
Do not use the unit for special purposes, such as storing food, raising animals, growing plants,
or preserving precision devices or art objects.
• This may cause deterioration of quality, or harm to animals and plants.
Do not expose combustion appliances to direct airfl ow.
• This may cause incomplete combustion.
Never put batteries in your mouth for any reason to avoid accidental ingestion.
• Battery ingestion may cause choking and/or poisoning.
Before cleaning the unit, switch it OFF and disconnect the power plug or turn the breaker OFF.
• This may cause injury, since the fan inside rotates at high speeds during operation.
When the unit will be unused for a long time, disconnect the power plug or turn the breaker OFF.
• The unit may accumulate dirt, which may cause overheating or fi re.
Replace all batteries of the remote controller with new ones of the same type.
• Using an old battery together with a new one may cause overheating, leakage, or explosion.
If the battery fl uid comes in contact with your skin or clothes, wash them thoroughly with
clean water.
• If the battery fl uid comes in contact with your eyes, wash them thoroughly with clean water and
immediately seek medical attention.
SAFETY PRECAUTIONS
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CAUTION
Ensure that the area is well-ventilated when the unit is operated together with a combustion
appliance.
• Inadequate ventilation may cause oxygen starvation.
Turn the breaker OFF when you hear thunder and there is a possibility of a lightning strike.
• The unit may be damaged if lightning strikes.
After the air conditioner is used for several seasons, perform inspection and maintenance in
addition to normal cleaning.
• Dirt or dust in the unit may create an unpleasant odor, contribute to growth of fungi, such as mold,
or clog the drain passage, and cause water to leak from the indoor unit. Consult your dealer for
inspection and maintenance, which require specialized knowledge and skills.
Do not operate switches with wet hands.
• This may cause electric shock.
Do not clean the air conditioner with water or place an object that contains water, such as a
fl ower vase, on it.
• This may cause fi re or electric shock.
Do not step on or place any object on the outdoor unit.
• This may cause injury if you or the object falls down.
WARNING
Consult your dealer for installing the air conditioner.
• It should not be installed by the user since installation requires specialized knowledge and skills.
An improperly installed air conditioner may cause water leakage, fi re, or electric shock.
Provide a dedicated power supply for the air conditioner.
• A non-dedicated power supply may cause overheating or fi re.
Do not install the unit where fl ammable gas could leak.
• If gas leaks and accumulates around the outdoor unit, it may cause an explosion.
Earth the unit correctly.
• Do not connect the earth wire to a gas pipe, water pipe, lightning rod, or a telephone earth wire.
Improper earthing may cause electric shock.
CAUTION
Install an earth leakage breaker depending on the installation location of the air conditioner
(such as highly humid areas).
• If an earth leakage breaker is not installed, it may cause electric shock.
Ensure that the drain water is properly drained.
• If the drain passage is improper, water may drip down from the indoor/outdoor unit, wetting and
damaging the furniture.
IMPORTANT
Dirty fi lters cause condensation in the air conditioner which will contribute to the growth of fungi such as
mold. It is therefore recommended to clean air fi lters every 2 weeks.
In case of an abnormal condition
Immediately stop operating the air conditioner and consult your dealer.
For installation
SAFETY PRECAUTIONS
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● OPERATING INSTRUCTIONS ●
NAME OF EACH PART
Indoor unit
Outdoor unit
Air outlet
Air fi lter
(Anti mold fi lter)
Horizontal vane
Vertical vane
Fan
Fan guard
Air inlet
Heat exchanger
Front panel
Display section
Operation indicator lamp
Emergency operation switch
Page 13
Remote control receiving
section
Air cleaning fi lter
(Electrostatic anti-allergy
enzyme fi lter, option)
(Microparticle catching
fi lter, option)
(B)
(K)
(A)
Air inlet
(back and side)
* Do not drain
drainage to
Drain cover
from indoor
unit.
It might cause
overfl ow from
Drain cover
due to choke.
Refrigerant piping
Drainage hose*
Air outlet
Drain outlet
Drain cover
Outdoor units may be different in appearance.
Indoor units may be different in appearance.
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NAME OF EACH PART
Remote controller
Remote controller holder
Signal transmitting section
Distance of signal : About 6 m*
Beep(s) is (are) heard from the indoor unit when the signal is received.
* Refer to page 20 for ERROR CODE DISPLAY MODE.
Operation display section
OFF/ON
(stop/operate) button
Page 8
Temperature buttons
Page 8
Battery replacement indicator
Page 7
Operation select
button Page 8
FAST COOLING button
Page 11
BACK LIGHT button
FAN speed control button
Page 10
Off-timer button
Page 13
On-timer button
Page 13
SLEEP button
Page 12
TIME set buttons
Page 7, 13
forward button
backward button
CLOCK button
Page 7
RESET button
Page 7
UNIT button
Page 7
Lid
Slide down to open
• Install the remote controller holder
in a place where the signal can be
received by the indoor unit.
Only use the remote controller provided with the unit.
Do not use other remote controllers.
If two or more indoor units are installed in proximity to one
another, an indoor unit that is not intended to be operated
may respond to the remote controller.
VANE control button
Page 10
CHECK button
Page 20
WIDE VANE control button
Page 11 <GS18 only>
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● OPERATING INSTRUCTIONS ●
Note:
• Press
CLOCK
gently using
a thin instru-
ment.
Note:
• Make sure the polarity of the batteries is correct.
• Do not use manganese batteries and leaking batter-
ies. The remote controller could malfunction.
• Do not use rechargeable batteries.
• The battery replacement indicator lights up when the
battery is running low. In about 7 days after the indica-
tor starts lights up, the remote controller stops work-
ing.
• Replace all batteries with new ones of the same type.
• Batteries can be used for approximately 1 year. How-
ever, batteries with expired shelf lives last shorter.
• Press RESET gently using a thin instrument.
If the RESET is not pressed, the remote controller
may not operate correctly.
Before operation: Insert the power supply plug into the
power outlet and/or turn the breaker on.
Installing the remote control-
ler batteries
Setting current time
1. Press
CLOCK.
3. Press CLOCK
again.
1.
Remove the
front lid.
2. Insert the
negative
pole
of AAA alkaline
batteries fi rst .
3. Install the front lid.
4.
Press RESET.
2. Press the TIME
buttons to set the
time.
Each press
changes the clock
1 minute forward/
backward (10 min-
utes when pressed
longer).
Note:
How to set remote controller exclusively for a par-
ticular indoor unit
A maximum of 4 indoor units with
wireless remote controllers can
be set.
To operate the indoor unit individ-
ually with each remote controller,
assign a number to each remote controller according to
the number of the indoor unit. Please set according to
the following procedure:
(1) Turn the breaker OFF for the unit.
(2) With the remote controller powered
OFF, hold down UNIT on the remote
controller for 2 seconds to enter the
pairing mode.
Setting number is displayed in the
remote controller.
(3) Press UNIT again and assign a number to each
remote controller.
Each press of UNIT advances the number in the
following order: 1→2→3→4.
(4) Press to complete the pairing setting.
After you turn the breaker ON, the remote controller that
fi rst sends a signal to an indoor unit will be regarded as
the remote controller for the indoor unit.
Once they are set, the indoor unit will only receive the
signal from the assigned remote controller afterwards.
The setting of indoor unit will be cancelled, if the breaker
is turned OFF or the power supply is shut down.
PREPARATION BEFORE OPERATION
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SELECTING OPERATION MODES
1Press to start the operation.
2Press to select operation mode.
Each press changes mode in the fol-
lowing order:
<for MSZ-GS>
(AUTO) (COOL) (DRY) (HEAT) (FAN)
<for MSY-GS>
(I FEEL) (COOL) (DRY) (FAN)
3Press or to set the tem-
perature.
Each press raises or lowers the tem-
perature by 1°C.
Press to stop the operation.
• The same setting is selected the next time by
simply pressing .
Note:
Operation indicator lamp
The operation indicator lamp shows the operation state
of the unit.
Indication Operation state Room temperature
The unit is operat-
ing to reach the set
temperature
About 2°C or more
away from set tem-
perature
The room tempera-
ture is approaching
the set temperature
About 1 to 2°C from
set temperature
Standby mode (only during multi system
operation)
Lit Blinking Not lit
Multi system operation
Two or more indoor units can be operated by one out-
door unit. When several indoor units are operated simul-
taneously, cooling/dry/fan and heating operations can-
not be done at the same time. When COOL/DRY/FAN
is selected with one unit and HEAT with another or vice
versa, the unit selected last goes into standby mode.
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● OPERATING INSTRUCTIONS ●
SELECTING OPERATION MODES
AUTO mode (Auto change over)
(MSZ-GS only)
The unit selects the operation mode according to the
difference between the room temperature and the set
temperature. During AUTO mode, the unit changes mode
(COOL↔HEAT) when the room temperature is about 2°C
away from the set temperature for more than 15 minutes.
Note:
Auto Mode is not recommended if this indoor unit is con-
nected to a MXZ type outdoor unit. When several indoor
units are operated simultaneously, the unit may not
be able to switch operation mode between COOL and
HEAT. In this case, the indoor unit becomes standby
mode (Refer to table of Operation indicator lamp).
I FEEL mode (MSY-GS only)
The unit selects the operation mode according to the room
temperature when I FEEL is selected. When the room
temperature is higher than 25°C, COOL is selected (set
temperature: 24°C). When the room temperature is lower
than 25°C, DRY is selected. However, when operation is
stopped and then started within 2 hours, the mode which
has been selected previously is operated.
Note:
During COOL operation, the set temperature may not be
changed when the room temperature is more than 2°C
higher than the set temperature. In this case, please wait
until the room temperature drops to within 2°C of the set
temperature.
COOL mode
Enjoy cool air at your desired temperature.
DRY mode
Dehumidify your room. The room may be cooled slightly.
Temperature cannot be set during DRY mode.
HEAT mode (MSZ-GS only)
Enjoy warm air at your desired temperature.
FAN mode
Circulate the air in your room.
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Fan speed
Press to select fan speed.
Each press changes fan speed in the
following order:
• Two short beeps are heard from the indoor unit
when set to AUTO.
• Use higher fan speed to cool the room more
powerfully. It is recommended to lower the fan
speed once the room is cool.
• Use lower fan speed for quiet operation.
• Use lower fan speed to further lower the outlet
temperature and humidity.
Press to select airfl ow direc-
tion. Each press changes airfl ow
direction in the following order:
(AUTO) .........The vane is set to the most effi cient
airfl ow direction.
COOL/DRY/FAN: horizontal position.
HEAT: downward.
(Manual) .......For efficient air conditioning, select
the upper position for COOL/DRY,
and the lower position for FAN/HEAT.
If the lower position is selected during
COOL/DRY, the vane automatically
moves to the upward position after 0.5
to 1 hour to prevent any condensation
from dripping.
(Swing) .........The vane moves up and down intermit-
tently.
• Two short beeps are heard from the indoor unit when
set to AUTO.
• HEAT mode is MSZ-GS only.
Up-down Airflow direction
(AUTO) (Quiet) (Low) (Med.) (High) (Super High)
(AUTO) (1) (2) (3) (4) (5)
(SWING)
F AN SPEED AND AIRFLOW DIRECTION ADJUSTMENT
Note:
Multi system operation
When several indoor units are operated simultaneously
by one outdoor unit for heating operation, the tempera-
ture of the airfl ow may be low. In this case, it is recom-
mended to set the fan speed to AUTO.
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● OPERATING INSTRUCTIONS ●
F AST COOLING OPERATION
Left-right Airflow direction
<GS18 only>
<GS07/09/12>
F
AN SPEED AND AIRFLOW
DIRECTION ADJUSTMENT
Press during COOL mode
page 9 to start FAST COOLING
operation.
Fan speed : Exclusive speed for FAST
COOLING mode
Horizontal vane : The vane follows as your
selection during Manual/
Swing.
Exclusive position during
AUTO operation.
Vertical vane : The vane follows as your
selection during Manual/
Swing.
• Temperature cannot be set during FAST
COOLING operation.
Press again to cancel FAST
COOLING operation.
• FAST COOLING operation is also cancelled
automatically in 15 minutes, or when the
MODE, OFF/ON, FAN, or SLEEP button is
pressed.
Press to select airfl ow direc-
tion. Each press changes airfl ow
direction in the following order:
( SWING )
■ To change the horizontal airfl ow direc-
tion.
Move the vertical vane manually before starting
operation.
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Press during COOL
mode page 9 to start SLEEP
operation.
• Set temperature will change over time.
• Set temperature will be controlled
slightly lower for about 2 hours.
It will help you fall asleep more easily.
• Air direction can be changed as you
like.
• SLEEP operation cannot be set when
ON timer is on stand-by.
Press during HEAT
mode page 9 to start SLEEP
operation. (MSZ-GS only)
• Set temperature will change over time.
• Set temperature will be controlled
slightly higher for about 2 hours.
It will help you fall asleep more easily.
• Air direction can be changed as you
like.
• SLEEP operation cannot be set when
ON timer is on stand-by.
SLEEP ON
Set
temperature
before
setting the
SLEEP
operation.
About 2 hours
During the SLEEP
operation.
Set
temperature
before
setting the
SLEEP
operation.
SLEEP OPERATION
Press again to cancel SLEEP
operation.
• SLEEP operation is also cancelled when the
MODE, FAST, OFF/ON or ON TIMER button is
pressed.
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● OPERATING INSTRUCTIONS ●
When the remote controller cannot
be used...
Emergency operation can be activated by pressing the
emergency operation switch (E.O. SW) on the indoor unit.
Each time the E.O. SW is pressed, the
operation changes in the following order:
Note:
The fi rst 30 minutes of operation is test run. Tempera-
ture control does not work, and fan speed is set to High.
TIMER OPERATION
(ON/OFF TIMER) E
MERGENCY OPERATION
1Press or during opera-
tion to set the timer.
(ON timer) : The unit turns ON at the
set time.
(OFF timer) : The unit turns OFF at the
set time.
* or blinks.
* Make sure that the current time is set cor-
rectly. Page 7
2Press (forward) and
(backward) to set the time of timer.
Each press changes the set time 10 minutes for-
ward/backward.
• Set the timer while or is blinking.
Press or again to cancel
timer.
Note:
ON and OFF timers can be set together. mark indi-
cates the order of timer operations.
Set temperature : 24°C
Fan speed : Medium
Horizontal vane : Auto
Emergency
COOL
Emergency
COOL
Emergency
HEAT
Stop
Operation indicator lamp
<MSY-GS only> <MSZ-GS only>
Stop
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CLEANING
Instructions:
• Switch off the power supply or turn off the breaker before cleaning.
• Be careful not to touch the metal parts with your hands.
• Do not use benzine, thinner, polishing powder, or insecticide.
• Use only diluted neutral detergents.
• Do not expose parts to direct sunlight, heat, or fi re to dry.
• Do not use water hotter than 50°C.
• Do not use a scrubbing brush, a hard sponge, or the like.
• Do not soak or rinse the horizontal vane.
• Do not apply excessive force on the fan as it may cause cracks or breakage.
1. Lift the front panel until a “click” is heard.
2. Hold the hinges and pull to remove as shown in the illustration above.
• Wipe with a soft dry cloth or rinse it with water.
• Do not soak it in water for more than two hours.
• Dry it well in shade.
3. Install the front panel by following the removal procedure in reverse. Close the
front panel securely and press the positions indicated by the arrows.
Front panel
Air cleaning fi lter Page 15
Air fi lter Page 15
Hinge
Hole
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Air cleaning fi lter
(Electrostatic anti-allergy enzyme fi lter, option)
Back side of air fi lter
Every 3 months:
• Remove dirt by a vacuum cleaner.
• Put it back to its original position, and install all tabs of the air cleaning fi lter.
When dirt cannot be removed by vacuum cleaning:
• Soak the fi lter and its frame in lukewarm water before rinsing it.
• After washing, dry it well in shade. Install all tabs of the air fi lter.
Every year:
• Replace it with a new air cleaning fi lter for best performance.
• Parts Number: MAC-2320FT
Air cleaning fi lter
(Microparticle catching fi lter, option)
Removes the microparticles from the air by means of static electricity.
Back side of air fi lter
Every 3 months:
• Remove dirt by a vacuum cleaner.
• Do not wash it with water. Replace it with a new air cleaning fi lter when tobacco tar or oil stains adhere to it.
• Put it back to its original position, and install all tabs of the air cleaning fi lter.
Every 3 year:
• Replace it with a new air cleaning fi lter for best performance.
• Parts Number: MAC-EMF515FT-E
Important
• Clean the fi lters regularly for best performance and to reduce power consumption.
• Dirty fi lters cause condensation in the air conditioner which will contribute to the growth of
fungi such as mold. It is therefore recommended to clean air fi lters every 2 weeks.
En-15
● OPERATING INSTRUCTIONS ●
CLEANING
Air fi lter (Anti mold fi lter)
• Clean every 2 weeks
• Remove dirt by a vacuum cleaner, or rinse with water.
• After washing with water, dry it well in shade.
Air fi lter Pull to remove
from the air fi lter.
Attach to the air fi lter.
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CLEANING
En-16
1Turn the horizontal vane downward.
Then, remove the vane as shown in
➀ and ➁.
Vane
Unlock
Air outlet and Fan
(before cleaning, make sure that the fan is stopped)
2Swing out the two vertical vanes
one by one.
3Clean the air outlet and fan.
• Wipe with a soft dry cloth.
4Put the vertical vanes back to their
original positions correctly one by
one, into their respective guide.
• Push the vanes until they click into place.
Guide
5Install the horizontal vane by fol-
lowing the removal procedure in
reverse.
• If the horizontal vane is not installed cor-
rectly, all LED lamps blink when power is
turned on.
Note:
Do not apply excessive force to the fan or fan guard.
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● OPERATING INSTRUCTIONS ●
Even if these items are checked, when the unit does not recover from the trouble, stop using the air condi-
tioner 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 13
All LED lamps on the indoor unit are
blinking.
• Are the horizontal vanes installed correctly? Page 16
The horizontal vane does not move. • Are the horizontal vane and the vertical vane installed correctly?
• Is the fan guard deformed?
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 HORIZONTAL
VANE is suspended for a while, then
restarted.
• This is for the swing operation of the HORIZONTAL VANE to be per-
formed normally.
The airfl ow direction changes during
operation.
The direction of the horizontal vane can-
not 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
air fl ow is automatically set to upward position to prevent water from
condensing and dripping.
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 indoor unit discolors over time. • Although plastic turns yellow due to the infl uence of some factors such
as ultraviolet light and temperature, this has no effect on the product
functions.
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Symptom Explanation & Check points
Multi system
The indoor unit which is not operating
becomes warm and a sound, similar to
water fl owing, 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 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.
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 7
• Is the polarity (+, -) of the batteries correct? Page 7
• 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 8
• Is the fan setting appropriate? Please change fan speed to High or
Super High. Page 10
• Are the fi lters clean? Page 14
• Is the fan or heat exchanger 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?
• 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 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.
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● OPERATING INSTRUCTIONS ●
Symptom Explanation & Check points
Airfl ow
The air from the indoor unit smells
strange.
• Are the fi lters clean? Page 14
• 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 switched.
In the following cases, stop using the air conditioner and consult your dealer.
• When water leaks or drips from the indoor unit.
• When the upper operation indicator lamp blinks. Page 20
Except for when the lamp of a multi unit blinks while the unit is on standby.
• 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 amplifi er may be required for the affected
device.
• When an abnormal sound is heard.
• When any refrigerant leakage is found.
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