Mitsubishi Electric MSY-GW25VFD User manual

SPLIT-TYPE AIR CONDITIONERS
INDOOR UNIT
MSY-GW25VFD MSY-GW35VFD MSY-GW42VFD
MSY-GW50VFD MSY-GW60VFD MSY-GW71VFD MSY-GW80VFD
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 ●
SAFETY PRECAUTIONS
CONTENTS
■SAFETY PRECAUTIONS 1
■NAME OF EACH PART 3
■PREPARATION BEFORE OPERATION 4
■SELECTING OPERATION MODES 5
■FAN SPEED AND AIRFLOW DIRECTION ADJUSTMENT 6
■LONG OPERATION 7
■POWERFUL OPERATION 7
■I-SAVE OPERATION 7
■ECONO COOL OPERATION 8
■TIMER OPERATION (ON/OFF TIMER) 8
■WEEKLY TIMER OPERATION 9
■DEMAND RESPONSE AND INDOOR UNIT OPERATION 10
■EMERGENCY OPERATION 10
■AUTO RESTART FUNCTION 10
■CLEANING 11
■WHEN YOU THINK THAT TROUBLE HAS OCCURRED 12
■WHEN THEAIR CONDITIONER IS NOT GOING TO BE USED FORALONG TIME 13
■INSTALLATION PLACE AND ELECTRICAL WORK 13
■SPECIFICATIONS 13
• 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.
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.
: 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 abnor-
mal 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 break-
down. 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 appli-
ance 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.
• Thismaycauseinjury,sincethefaninsiderotatesathighspeeds
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.
• Acontinuedoperationinthe abnormal state maycauseamalfunc-
tion, fi re, or electric shock. In this case, consult your dealer.
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
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SAFETY PRECAUTIONS
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.
• Thismaycausethewatercondensationintheair 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 ac-
cidental 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.
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 con-
ditioner 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.
• Ifgasleaksand 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,oratelephoneearthwire.Improperearthingmay 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.
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 overheat-
ing, 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
thoroughlywithcleanwaterand immediately seek medicalattention.
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 pos-
sibility 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
inspectionand 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.
For installation
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.
WARNING
When the air conditioner does not cool or heat, there is a pos-
sibility 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.
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 op-
erating 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
theappliance,otherthanthoserecommendedbythemanufacturer.
• 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.
This appliance is intended to be used by expert or trained users
in shops, in light industry and on farms, or for commercial use
by lay persons.
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● OPERATING INSTRUCTIONS ●
Operation indicator lamp
NAME OF EACH PART
Indoor unit <GW71/80>
Horizontal vane Air outlet
Air inlet
Heat exchanger
Front panel
Display section
Emergency
operation switch Page 10
Air cleaning fi lter
(Anti-Allergy En-
zyme Filter, option)
Air fi lter
(Nano plati-
num fi lter)
Remote control
receiving section
Operation indicator lamp
Remote control receiving section
Emergency operation switch Page 10
Horizontal vane
Air outlet
Air fi lter
(Nano platinum fi lter)
Air inlet
Heat exchanger
Front panel
Air cleaning fi lter
(Anti-Allergy Enzyme
Filter, option)
Display section
<GW50/60>
<GW25/35/42>
Operation indicator lamp
Remote control receiving section
Air cleaning fi lter
(Anti-Allergy Enzyme
fi lter, option)
Air inlet
Air fi lter
(Nano platinum
fi lter)
Front panel
Air outlet
Heat exchanger
Emergency operation switch Page 10
Horizontal vane
Outdoor unit
Outdoor units may be different in appearance.
Air inlet (back and side)
Refrigerant piping
Drainage hose
Air outlet
Drain outlet
Display section
Fan gurad
Fan gurad
Fan gurad
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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.
Operation
display section
OFF/ON
(stop/operate) button
Temperature
buttons Page 5
Operation
select button
Page 5
ECONO COOL
button Page 8
FAN speed control
button Page 6
LONG button Page 7
<only GW50/60/71/80>
WIDE VANE control
button Page 6
<only GW50/60/71/80>
VANE control button Page 6
TIME, TIMER set buttons
Page 4, 8
Increase time
Decrease time
CLOCK button Page 4
RESET button Page 4
Lid
Slide the lid down to open
the remote controller. Slide
it down further to get to the
weekly timer buttons.
• Install the remote
controller holder in a
place where the signal
can be received by the
indoor unit.
• When the remote
controller is not used,
place it in this holder.
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.
i-save button
Page 7 WEEKLY TIMER
set buttons Page 9
Battery replacement
indicator Page 4
POWERFUL
button Page 7
NAME OF EACH PART
Before operation: Insert the power supply plug into the power outlet and/or
turn the breaker on.
Installing the remote controller batteries
PREPARATION BEFORE OPERATION
1. Remove the front lid.
2. Insert the negative
pole of AAA alkaline
batteries fi rst.
3. Install the front lid.
4. Press RESET.
Setting current time
1. Press CLOCK.
4. Press CLOCK again.
2. Press either the TIME button
or the TIMER buttons to set
the time.
Each press increases/de-
creases the time by 1 minute
(10 minutes when pressed
longer).
3. Press the DAY button
to set the day.
Note:
• Press CLOCK gently using a thin instrument.
Note:
• Make sure the polarity of the batteries is correct.
• Do not use manganese batteries and leaking batteries. 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 indicator starts lights up, the remote controller stops
working.
• Replace all batteries with new ones of the same type.
• Batteries can be used for approximately 1 year. However, batteries with ex-
pired 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.
<only GW50/60/71/80>
Note:
How to set remote controller exclusively for a particular indoor unit
A maximum of 4 indoor units with wireless remote controllers can be used in
a room.
To operate the indoor units individually with each remote controller, assign a
number to each remote controller according to the number of the indoor unit.
This setting can be set only when all the following conditions are met:
• The remote controller is powered OFF.
(1) Hold down button on the remote controller for 2 seconds to enter the
pairing mode.
(2) Press button again and assign a number to each remote controller.
Each press of button advances the number in the following order: 1 →
2 → 3 → 4.
(3) Press button 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 as-
signed remote controller afterwards.
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● OPERATING INSTRUCTIONS ●
1Press to start the operation.
2Press to select operation mode. Each press
changes mode in the following order:
3Press 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 .
SELECTING OPERATION MODES
(I FEEL) (COOL) (DRY) (FAN)
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.
Note:
After COOL/DRY mode operation, it is recommended to operate in the
FAN mode to dry inside the indoor unit.
Note:
Operation indicator lamp
The operation indicator lamp shows the operation state of the unit.
Indication Operation state Room temperature
Theunit is operatingto reach theset
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
Demand Response mode Page 10 —
Lit Blinking Not lit
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FAN SPEED AND AIRFLOW DIRECTION ADJUSTMENT
1Press 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 quicker. It is recommended to
lower the fan speed once the room is cool.
• Use lower fan speed for quiet operation.
(AUTO) (Quiet) (Low) (Med.) (High) (Super High)
Left-right Airflow direction
<GW25/35/42>
■ To change the horizontal airfl ow direction.
Move the vertical vane manually before starting operation.
Fan speed
<GW50/60>
1Press to select horizontal airfl ow direction. Each
press changes airfl ow direction in the following order:
<GW71/80>
1Press to select horizontal airfl ow direction. Each
press changes airfl ow direction in the following order:
(SWING)
(SWING)
Up-down Airflow direction
1Press 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 toAUTO.
(AUTO) (1) (2) (3) (4) (5) (SWING)
(AUTO).........The vane issettothemostefficientairflow direction. :horizontal
position.
(Manual).......For efficient air conditioning, select the upper position for
COOL/DRY, and the lower position for FAN. If the lower posi-
tion 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 intermittently.
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● OPERATING INSTRUCTIONS ●
I-SAVE OPERATION
1Press during COOL or ECONO COOL mode to
select i-save mode.
2Set the temperature, fan speed, and airfl ow direction.
• The same setting is selected from the next time by simply pressing
.
• One group of setting can be saved.
• Select the appropriate temperature, fan speed, and airflow direction
according to your room.
Press again to cancel i-save operation.
• i-save operation is also cancelled when the MODE or POWERFUL
button is pressed.
Note:
Example of use:
1. Low energy mode
Set the temperature 2°C to 3°C warmer in COOL mode. This setting is suit-
able for unoccupied room, and while you are sleeping.
2. Saving frequently used settings
Save your preferred setting for COOL/ECONO COOL. This enables you to
select your preferred setting with a single push of the button.
LONG OPERATION
1Press to start LONG operation.
• Fan speed increases and the horizontal vane moves to the position for
LONG mode.
• Air reaches to longer distance.
Press again to cancel LONG operation.
• LONG operation is cancelled when the OFF/ON, VANE, or ECONO
COOL button is pressed.
1Press during COOL mode page 5 to start
POWERFUL operation.
Fan speed : Exclusive speed for POWERFUL mode
Horizontal vane : Set position, or downward airflow position during
AUTO setting
• Temperature cannot be set during POWERFUL operation.
Press again to cancel POWERFUL operation.
• POWERFUL operation is also cancelled automatically in 15 min-
utes, or when the OFF/ON, FAN, ECONO COOL, or i-save button is
pressed.
POWERFUL OPERATION
<GW50/60/71/80>
<GW50/60/71/80>
• A simplified set back function enables to recall the preferred (preset) setting
with a single push of the button. Press the button again and you can go
back to the previous setting in an instance.
• i-save operation cannot be set on the weekly timer.
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ECONO COOL OPERATION
1Press during COOL mode page 5 to start
ECONO COOL operation.
The unit performs swing operation vertically in various cycles according to the
temperature of airflow.
Press again to cancel ECONO COOL operation.
• ECONO COOL operation is cancelled when the VANE, LONG, or
POWERFUL button is pressed.
1Press 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 and day are set correctly. Page 4
2Press (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.
Press or again to cancel timer.
Note:
• ON and OFF timers can be set together. mark indicates the order of timer
operations.
• If power failure occurs while ON/OFF timer is set, see page 10 “AUTO RE-
START FUNCTION”.
TIMER OPERATION (ON/OFF TIMER)
Swing airfl ow (change of air fl ow) makes you feel cooler than stationary airfl ow.
The set temperature and the airfl ow direction are automatically changed by the
microprocessor. It is possible to perform cooling operation with keeping comfort.
As a result energy can be saved.
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● OPERATING INSTRUCTIONS ●
WEEKLY TIMER OPERATION
• A maximum of 4 ON or OFF timers can be set for individual days of the week.
• A maximum of 28 ON or OFF timers can be set for a week.
Setting the weekly timer
* Make sure that the current time and day are set correctly.
1Press to enter the weekly timer setting mode.
2Press and to select setting day and number.
3Press , , and to set ON/OFF, time, and
temperature.
E.g. : [ON], [6:00]
and [24°C] are
selected.
Pressing
selects ON/OFF timer.
Pressing
deletes timer setting.
Pressing
adjusts the time.
Pressing
adjusts the
temperature.
Press and to continue setting the timer for
other days and/or numbers.
4
Press to complete and transmit the weekly timer setting.
Note:
• Press to transmit the setting information of weekly timer to the indoor
unit. Point the remote controller toward the indoor unit for 3 seconds.
• When setting the timer for more than one day of the week or one number,
does not have to be pressed per each setting. Press once
after all the settings are complete. All the weekly timer settings will be saved.
• Press to enter the weekly timer setting mode, and press and hold
for 5 seconds to erase all weekly timer settings. Point the remote
controller toward the indoor unit.
5Press to turn the weekly timer ON. ( lights.)
* When the weekly timer is ON, the day of the week whose timer setting
is complete, will light.
Press again to turn the weekly timer OFF. (
goes out.)
Note:
The saved settings will not be cleared when the weekly timer is turned OFF.
Checking weekly timer setting
1Press to enter the weekly timer setting mode.
* blinks.
2Press or to view the setting of the particular
day or number.
Press to exit the weekly timer setting.
* Hold down the button to change the time quickly.
* The temperature can be set between 16°C and 31°C at weekly timer.
* which was blink-
ing goes out, and the
current time will be
displayed.
* blinks.
Note:
The simple ON/OFF timer setting is available while the weekly timer is on. In
this case, the ON/OFF timer has priority over the weekly timer; the weekly timer
operation will start again after the simple ON/OFF timer is complete.
Pressing selects the day of
the week to be set. Pressing selects the setting number.
E.g. : [Mon Tue ... Sun]
and [1] are selected.
* All days can be selected.
Note:
When all days of the week are selected to view the settings and a different set-
ting is included among them, will be displayed.
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Demand response
This unit has demand response capability which is compliant with AS/NZS 4755.3.1.
Toactivatethis function, youneedtomake a contractwithremoteagents such aselectricsupplycompany, then this unitshouldbe connected to Demandresponseenabling
devise (DRED). For further information, consult your dealer.
Demand response represents the automated alteration of an electrical product’s normal mode of operation in response to an initiating signal originating from or defi ned
by a remote agent.
This unit supports 3 Demand Response Modes (DRMs).
DRM Description of operation in this mode Operation indicator lamp
Lighted Not lighted
DRM 1 Compressor off Theair conditioner doesnot perform coolingoperation during
the demand response event.
Upper lamp is lighted.
Lower lamp blinks.
2.5 sec 2.5 sec0.5 sec
2.5 sec
DRM 2
The air conditioner continues to perform cooling operation
during the demand response event, but the electrical energy
consumed by the air conditioner in a half hour period is not
morethan50% of the totalelectricalenergythatwould be con-
sumed if operating at the rated capacity in a half hour period.
DRM 3
The air conditioner continues to perform cooling operation
during the demand response event, but the electrical energy
consumed by the air conditioner in a half hour period is not
morethan75% of the totalelectricalenergythatwould be con-
sumed if operating at the rated capacity in a half hour period.
Note:
• DRM is automatically activated or released according to the signals from DRED.
DRM cannot be invalidated or changed manually.
• You might feel this unit does not suffi ciently perform cooling operation during DRM.
• Operation settings can be changed as usual with the remote controller during DRM.
However, you might not feel cool or warm enough as DRM is prioritized.
DEMAND RESPONSE AND INDOOR UNIT OPERATION
Operation indicator lamp
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:
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
withthe remote controllerjust before theshutoff of themain power. Whentimer is
set,timersetting is cancelled andtheunitstarts operation when powerisresumed.
If you do not want to use this function, please consult the service repre-
sentative because the setting of the unit needs to be changed.
Set temperature : 24°C
Fan speed : Medium
Horizontal vane : Auto
Note:
The fi rst 30 minutes of operation is test run. Temperature control
does not work, and fan speed is set to High.
EMERGENCY OPERATION AUTO RESTART FUNCTION
Emergency COOL
Stop
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● OPERATING INSTRUCTIONS ●
Air cleaning fi lter
(Anti-Allergy Enzyme Filter, option)
Every 3 months:
• Remove dirt by a vacuum cleaner.
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
GW25/35/42/50/60: MAC-408FT-E
GW71/80: MAC-2350FT-E
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 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.
CLEANING
<GW71/80>
Front panel
<GW25/35/42/50/60>
Hinge
GW71/80 only
Hole
Air fi lter (Nano platinum 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.
What is “Nano platinum fi lter”?
Nano platinum is a ceramic particle that includes a platinum nanoparticle. The
particles are incorporated into the fi lter material, which results in providing semi-
permanent antibacterial and deodorizing characteristics for the fi lter. Nano plati-
num surpasses the catechin (a biofl avonoid that is found in green tea) in perfor-
mance. Nano platinum fi lter uses this compound not only to improve air quality
but also to eliminate bacteria and viruses. This air fi lter has a semi-permanent
lasting effect even after washing it with water.
Important
• Clean the fi lters regularly for best performance and to re-
duce 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.
Pull to remove from
the air fi lter
Instructions:
<GW71/80>
<GW25/35/42/50/60>
Push to install
into the unit along
the fi lter guide.
Pull to remove from the unit.
Filter guide
• 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.
• When dirt stands out, wash it with kitchen neutral detergent diluted with luke-
warm water to the specifi ed concentration, then wipe off the detergent with a
damp towel.
• Do not use a scrubbing brush, a hard sponge, or the like.
• Do not soak or rinse the horizontal vane.
• Do not use water hotter than 50°C.
• Do not expose parts to direct sunlight, heat, or fi re to dry.
• Do not apply excessive force on the fan as it may cause cracks or breakage.
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En-12
WHEN YOU THINK THAT TROUBLE HAS OCCURRED
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?
• 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.
• ThisisfortheswingoperationoftheHORIZON-
TAL 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,iftheoperationcontinueswithairblowing
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 unit starts operation by
itself when the main power is
turned on, though it isn’t oper-
ated 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 control-
ler just before the shutoff of the main power.
Refer to “AUTO RESTART FUNCTION”.
Page 10
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.
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
coolingoperation,thefanoperatesintermittently
to maintain suffi cient cooling capacity.
Water leaks from the outdoor
unit. • DuringCOOLandDRYoperations,pipeorpipe connectingsectionsare cooled and this causes
water to condense.
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
• Areanybuttonsontheremotecontrollerofother
electric appliances being pressed?
Symptom Explanation & Check points
Does not cool
The room cannot be cooled
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?
• When a ventilation fan or a gas cooker is used
in a room, the cooling load increases, resulting
in an insuffi cient cooling effect.
• Whentheoutsidetemperatureis high, the cooling
effect may not be suffi cient.
• It may take a certain time to reach the setting
temperatureormay not reach that depending on
the size of the room, the ambient temperature,
and the like.
Poor cooling performance. • Do you have an arrangement with your electric
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/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
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.
Timer
Weekly timer does not operate
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
• Whenapowerfailureoccursandthemainpower
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 opera-
tion by itself. • Is the weekly timer set? Page 9
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/upper operation indicator lamp blinks. (For Multi system, 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.
• Operationof the airconditioner interferes withradio or TVreception. An ampli-
fi er may be required for the affected device.
• When an abnormal sound is heard.
• When any refrigerant leakage is found.
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En-13
● OPERATING INSTRUCTIONS ●
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 hot spring, sewage, waste water.
• Where oil is splashed or where the area is fi lled with oily smoke (such as cook-
ing areas and factories, in which the properties of plastic could be changed
and damaged).
• Where there is high-frequency or wireless equipment.
• Where the air from the outdoor unit air outlet is blocked.
• Wherethe operationsound or airfrom the outdoorunit bothers thehouse next
door.
• The mounting height of indoor unit 1.8 m to 2.3 m is recommended. If it is
impossible, please consult your dealer.
• Do not operate the air conditioner during interior construction and fi nishing
work, or while waxing the fl oor. Before operating the air conditioner, ventilate
the room well after such work is performed. Otherwise, it may cause volatile
elements to adhere inside the air conditioner, resulting in water leakage or
scattering of dew.
• The indoor unit must be installed in rooms which exceed the fl oor space speci-
fi ed. Please consult your dealer.
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.
INSTALLATION PLACE AND
ELECTRICAL WORK
SPECIFICATIONS
1Operate by COOL mode with the highest temperature
set or FAN mode for 3 to 4 hours. Page 5
• This dries the inside of the unit.
• Moisture in the air conditioner contributes to growth of fungi, such as
mold.
2Press to stop the operation.
3Turn off the breaker and/or disconnect the power sup-
ply plug.
4Remove all batteries from the remote controller.
When using the air conditioner again:
1Clean the air fi lter. Page 11
2Check that the air inlet and outlet of the indoor and
outdoor units are not blocked.
3Check that the earth is connected correctly.
4Refer to the “PREPARATION BEFORE OPERATION”,
and follow the instructions. Page 4
WHEN THE AIR CONDITIONER IS NOT
GOING TO BE USED FOR A LONG TIME
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 picture
distortion or
the noise.
1 m
or
more
Radio
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, pro-
vide 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.
(GW25, 35, 42, 50, 60/
GW71, 80)
200/500 mm or more
For the optimum ef-
fi ciency and to extend
the life time of using,
the outdoor unit
should be installed in
a well-ventilated dry
place.
Indoor Outdoor
Cooling Upper limit 32°C DB
23°C WB 46°C DB —
Lower limit 21°C DB
15°C WB 21°C DB —
Guaranteed operating range
DB : Dry Bulb
WB : Wet Bulb
DG79A01WH01_en.indd 13 2022/02/18 17:17:57

HEAD OFFICE: TOKYO BUILDING, 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
DG79A01WH01
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