SPLIT-TYPE AIR CONDITIONERS
INDOOR UNIT
MSY-GC25VA MSY-GC35VA
English
OPERATING INSTRUCTIONS
For user
• To use this unit correctly and safely, be sure to read these operating instructions before use.
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● OPERATING INSTRUCTIONS ●
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.
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.
• 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.
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 disconnect 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. In this case, consult
your dealer. If a repair involves recharging the unit with
refrigerant, ask the service technician for details.
• The refrigerant used in the air conditioner is safe. Normally,
it does not leak. However, if refrigerant leaks and comes in
contact with a heat source such as a fan heater, kerosene
heater, or cooking stove, it will create a harmful gas.
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.
Meanings of symbols used in this manual
: Be sure not to do.
: Be sure to follow the instruction.
: Never insert your fi nger or stick, etc.
:
Never step onto the indoor/outdoor unit and do not put anything on them.
: Danger of electric shock. Be careful.
: Be sure to disconnect the power supply plug from the power outlet.
: Be sure to shut off the power.
SAFETY PRECAUTIONS
CONTENTS
■ SAFETY PRECAUTIONS 1
■ NAME OF EACH PART 3
■ PREPARATION BEFORE OPERATION 3
■ SELECTING OPERATION MODES 4
■ FAN SPEED AND AIRFLOW DIRECTION ADJUSTMENT 5
■ ECONO COOL OPERATION 5
■ TIMER OPERATION (ON/OFF TIMER) 5
■ CLEANING 6
■ WHEN YOU THINK THAT TROUBLE HAS OCCURRED 7
■ WHEN THE AIR CONDITIONER IS NOT GOING TO BE USED FOR A LONG TIME 8
■ INSTALLATION PLACE AND ELECTRICAL WORK 8
■ SPECIFICATIONS 8
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CAUTION
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 a long time at high humidity (80%
RH or more), such as with a door or window left open.
• The water condensation in the air conditioner may drip down,
wetting or damaging the furniture.
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.
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.
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.
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 ground 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.
In case of an abnormal condition
Immediately stop operating the air conditioner and consult your dealer.
SAFETY PRECAUTIONS
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.
For installation
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● OPERATING INSTRUCTIONS ●
Display section
Operation indicator
lamp
Remote control
receiving section
Emergency
operation switch Page 4
Air inlet (back and side)
Piping
Drainage hose
Air outlet
Drain outlet
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.
Operation display
section
ON/OFF
(operate/stop)
button
Temperature buttons
Page 4
Operation
select button
Page 4
ECONO
COOL
button
Page 5
FAN speed
control button
Page 5
Off-timer button Page 5
On-timer button Page 5
VANE
control button
Page 5
TIME set buttons Pages 3, 5
Increase time
Decrease time
CLOCK button Page 3
RESET button Page 3
Lid
Slide down to open
• Install the remote controller holder to a place where
the signal can be received
by the indoor unit.
Use the remote controller provided with the unit only.
Do not use other remote controllers.
Horizontal vane
Vertical vane
Air outlet
Fan
Air fi lter
(Catechin
air fi lter)
Air inlet
Heat exchanger
Front panel
Air cleaning fi lter
(Anti-Allergy Enzyme Filter)
Fan guard
Outdoor unit
NAME OF EACH PART
PREPARATION BEFORE OPERATION
Indoor unit Remote controller
Appearance of the outdoor unit may differ from some models.
RESET
CLOCK
• Make sure the polarity of the batteries is correct.
•
Do not use manganese batteries. The remote controller could malfunction.
• Do not use rechargeable batteries.
• Replace all batteries with new ones of the same type.
• Batteries can be used for approximately 1 year. However, batteries with
expired shelf lives last shorter.
• Press RESET gently using a thin instrument.
If the RESET button 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.
• Press CLOCK gently using a thin instrument.
Installing the remote controller batteries Setting current time
1.
Press CLOCK
3.
Press CLOCK again
2.
Press the TIME buttons to set the
time.
Each press increases/decreases
the time by 1 minute (10 minutes
when pressed longer)
1.
Remove the front lid
2.
Insert AAA
alkaline batteries
3.
Install the front lid
4.
Press RESET
RESET
CLOCK
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I FEEL mode
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.
FAN mode
Circulate the air in your room.
Operation indicator lamp
Operation indicator lamp
The operation indicator lamp shows the operation state of the unit.
Indication Operation state Room temperature
The unit is operating to reach the set
temperature
About 2°C or more
away from set tem-
perature
The room temperature is approach-
ing the set temperature
About 1 to 2°C from
set temperature
Lighted Not lighted
Emergency operation
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:
1
Press
to start the operation.
2
Press to select operation mode. Each press
changes mode in the following order:
3
Press or to set the temperature.
Each press raises or lowers the temperature by 1°C.
Press to stop the operation.
• The same setting is selected the next time by simply pressing .
Auto restart function
If a power failure occurs or the main power is turned off during operation, “Auto
restart function” automatically starts operation in the same mode as the one set
with the remote controller just before the shutoff of the main power. When
timer is set, timer setting is cancelled and the unit starts operation when power
is resumed.
If you do not want to use this function, please consult the service representative because the setting of the unit needs to be changed.
SELECTING OPERATION MODES
Set temperature : 24°C
Fan speed : Medium
Horizontal vane : Auto
(I FEEL)
(COOL)
(DRY)
(FAN)
Emergency COOL
Stop
Note:
The fi rst 30 minutes of operation is test run. Temperature
control does not work, and fan speed is set to High.
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● OPERATING INSTRUCTIONS ●
FAN SPEED AND
AIRFLOW DIRECTION ADJUSTMENT
ECONO COOL OPERATION
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.
Press to select airfl ow direction. Each press
changes airfl ow direction in the following order:
• Two short beeps are heard from the indoor unit when set to AUTO.
• Press for 2 seconds or more to set to horizontal position.
• Press once to cancel horizontal position.
• When the airflow direction is set to horizontal position, or when horizontal position is cancelled, operation stops for about 3 minutes.
Airflow direction
(AUTO) .........The vane is set to the most effi cient airfl ow direction. :horizontal
position.
(Manual) .......For efficient air conditioning, select upper position for COOL/
DRY, and lower position for FAN. If the lower position is
selected during COOL/DRY, the vane automatically moves
to the horizonatal position after 0.5 to 1 hour to prevent any
condensation from dripping.
(Swing) ......... The vane moves up and down intermittently.
■ To change the horizontal airfl ow direction.
Move the vertical vane manually before starting operation.
Press during COOL mode page 4 to start
ECONO COOL operation.
The unit performs swing operation vertically in various cycle according
to the temperature of the unit. Set temperature is set 2°C higher automatically.
Press again to cancel ECONO COOL operation.
• Pressing also cancels ECONO COOL operation.
What is “ECONO COOL”?
Swing air fl ow (change of air fl ow) makes you feel cooler than constant air fl ow.
So, even though the set temperature is automatically set 2°C higher, it is possible to perform cooling operation with keeping comfort. As a result, energy can
be saved.
1
Press or during operation 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 correctly. Page 3
2
Press (Increase) and (Decrease) to set the
time of timer.
Each press increases or decreases the set time by 10 minutes.
• Set the timer while or is blinking.
3
Press or again to cancel timer.
Note:
• ON and OFF timers can be used in combination. mark indicates the order
of timer operations.
• If power failure occurs while ON/OFF timer is set, see page 4 “Auto restart
function”.
(AUTO) (Low) (Med.) (High) (Super High)
(AUTO) (1) (2) (3) (4) (SWING)
TIMER OPERATION (ON/OFF TIMER)
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Heat exchanger
• Wear gloves to protect your
hands.
• Use the QUICK CLEAN KIT
(option).
Parts Number MAC-093SS-E
• Refer to the instructions described
in the QUICK CLEAN KIT for details.
Front panel
Instructions:
1. Lift the front panel until a “click” is heard.
2. Hold the hinges and pull to remove as shown in the above illustration.
• Wipe with a soft dry cloth or wash it with water.
• Do not soak it in water for more than two hours.
• Dry it well in shade before installing it.
3. Install the panel by following the removal
procedure in reverse. Close the front panel
securely and press the positions indicated
by the arrows.
Hole
Hinge
Hold the tab
Air cleaning fi lter
(Anti-Allergy Enzyme Filter)
Back side of air fi lter
• Clean every 3 months.
• Soak the fi lter together with its frame in lukewarm water and wash
it.
• After washing, dry it well in shade and put it back to its original position.
Install all tabs of the air fi lter.
• Replace it with a new air cleaning
fi lter every year for best perform-
ance.
• Parts Number MAC-408FT-E
What is “Catechin air fi lter” ?
Catechin is a biofl avonoid that is found in green tea that has both antiviral and antioxidant qualities. In addition to these benefi ts, Catechin also
offers excellent deodorizing characteristics. Catechin air fi lter uses this
compound to not only improve air quality but also prevent the spread of
bacteria and viruses in the room.
Note:
• Clean the fi lters regularly for best performance and to reduce power
consumption.
• Moisture in the air conditioner for a long time contributes to growth
of fungi, such as mold. To prevent fungi growth, set to the highest
temperature in manual COOL mode, and operate for 3 or 4 hours to
dry out the inside of the unit.
Air outlet and Fan (before cleaning, make sure that the fan is stopped)
Pull to remove from the air fi lter
Air fi lter (Catechin air fi lter)
• Clean every 2 weeks
• Remove dirt by a vacuum cleaner, or wash with water.
• Dry it well in shade before installing it.
CLEANING
1
Turn the horizontal vane upward.
Then, remove it as shown in ➀ and ➁.
2
Swing out the two vertical vanes
one by one.
• Make sure that the horizontal vane is removed.
4
Put the vertical vanes back to
their original positions correctly
one by one, into their respective
guide.
• Push the vanes until they click into place.
3
Clean the air outlet and fan.
• Wipe with a soft dry cloth.
Clean the fan.
• Use the QUICK CLEAN KIT (option).
Parts Number MAC-093SS-E
• Refer to the instructions described in the
QUICK CLEAN KIT for details.
5
Install the horizontal vane by
following the removal procedure
in reverse.
• If the horizontal vane is not installed correctly, all LED lamps blink when power is
turned on.
2
1
Unlock
• 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 mild detergents.
• Do not expose parts to direct sunlight, heat, or fl ames to dry.
• Do not use water hotter than 50°C.
Guide
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 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 5
All LED lamps on the indoor
unit are blinking.
• Is the horizontal vane installed correctly?
Page 6
The horizontal vane does not
move.
• Are the horizontal vane and the vertical vane
installed correctly? Page 6
• Is the fan guard deformed?
The unit cannot be operated
for about 3 minutes when
restarted.
• This protects the unit according to instructio ns fro m the mic rop roc ess or. 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 HORIZONTAL VANE to be performed normally.
The air fl 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 air fl ow is automatically set to position
(1) to prevent water from condensing and
dripping.
The unit starts operation by
itself when the main power
is turned on, though it isn’t
operated with 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 controller just before the shutoff of the main power.
Refer to “Auto restart function” page 4 .
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 cool ing oper atio n, the fan operates
intermittenly 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.
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 3
• Is the polarity (+, -) of the batteries correct?
Page 3
• Are any buttons on the remote controller of
other electric appliances being pressed?
Does not cool
The room cannot be cooled
suffi ciently.
• Is the tempe rat ure set ting appro priate?
Page 4
• Is the fan set tin g appr opr iat e? Please
change fan speed to higher setting.
• Is the fi lter clean? Page 6
• Is the fan or heat exchanger of the indoor unit
clean? Page 6
• Are there any obstacles blocking the air inlet
or outlet of the indoor or outdoor unit?
• Is a window or door open?
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.
Airfl ow
The air from the indoor unit
smells strange.
• Is the fi lter clean? Page 6
• Is the fan or heat exchanger of the indoor unit
clean? Page 6
• 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.
• 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 YOU THINK THAT TROUBLE HAS OCCURRED
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Installation place
Avoid installing the air conditioner in the following places.
• Where there is much machine oil.
• Salty places such as the seaside.
• Where sulfi de gas is generated such as a hot spring.
• Where oil is splashed or where the area is fi lled with oily smoke.
• Where there is high-frequency or wireless equipment.
• Where the air from the outdoor unit air outlet is blocked.
• Where the operation sound or air from the outdoor unit does not bother the
house next door.
Electrical work
• Provide an exclusive circuit for the power supply of the air conditioner.
• Be sure to observe the breaker capacity.
If you have any questions, consult your dealer.
Indoor Outdoor
Cooling
Upper limit
32°C DB
23°C WB
43°C DB
—
Lower limit
21°C DB
15°C WB
18°C DB
—
Guaranteed operating range
INSTALLATION PLACE AND
ELECTRICAL WORK
SPECIFICATIONS
To prevent the effects
of a fl uorescent lamp,
keep as far apart as
possible.
wall, etc.
Inverter-type
fl uorescent lamp
Keep a space to
prevent the pic-
ture distortion or
the noise.
1 m
or more
Radio
100 mm or
more
Wellventilated dry
place
100 mm or
more
TV
Cordless
phone or
Portable
phone
3 m or
more
1 m
or more
The installation location of the outdoor unit should
be at least 3 m away from the antennas for TV sets,
radios, etc. In areas where the reception is weak,
provide greater space between the outdoor unit and
the antenna of the affected device if operation of the air
conditioner interferes with radio or TV reception.
1
Set to the highest temperature in manual COOL mode,
and operate for 3 to 4 hours. Page 4
•This dries the inside of the unit.
• Moisture in the air conditioner contributes to growth of fungi, such as
mold.
2
Press
to stop the operation.
3
Turn off the breaker and/or disconnect the power supply plug.
4
Remove all batteries from the remote controller.
When using the air conditioner again:
1
Clean the air fi lter. Page 6
2
Check that the air inlet and outlet of the indoor and
outdoor units are not blocked.
3
Check that the earth is connected correctly.
WHEN THE AIR CONDITIONER IS NOT
GOING TO BE USED FOR A LONG TIME
HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
SG79F322H03
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