Mitsubishi Electric MFZ-KT25VG User manual

INDOOR UNIT
MFZ-KT25VG MFZ-KT35VG MFZ-KT50VG MFZ-KT60VG
English
OPERATING INSTRUCTIONS
BRUKSANVISNING
BETJENINGSVEJLEDNING
INSTRUÇÕES DE OPERAÇÃO
ΔΗΣΤΡΣ
LIBRETTO D’ISTRUZIONI
MANUAL DE INSTRUCCIONES
BEDIENINGSINSTRUCTIES
NOTICE D’UTILISATION
BEDIENUNGSANLEITUNG
РКООДСОЗАКСПОААЯ
INSTRUKCJAOBSŁUGI
BRUKSANVISNING
KÄYTTÖOHJEET
Deutsch
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ικ
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Četina
Magyar
Romn
Eesti
Latviski
Lietuvikai
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NÁVOD K OBSLUZE
NÁVOD NA OBSLUHU
HASZNÁLATI ÚTMUTATÓ
NAVODILA ZA UPORABO
INSTRUCIUNIDEUTILIARE
KASUTUSJUHEND
LIETOŠANAS INSTRUKCIJAS
NAUDOJIMO INSTRUKCIJA
UPUTE ZA UPORABU
UPUTSTVA ZA RUKOVANJE

EN Go to the above website to download manuals, select model name, then choose language.
DE Besuchen Sie die oben stehende Website, um Anleitungen herunterzuladen, wählen Sie den Modellnamen und dann die Sprache aus.
FR Rendez-vous sur le site Web ci-dessus pour télécharger les manuels, sélectionnez le nom de modèle puis choisissez la langue.
NL Ga naar de bovenstaande website om handleidingen te downloaden, de modelnaam te selecteren en vervolgens de taal te kiezen.
ES Visite el sitio web anterior para descargar manuales, seleccione el nombre del modelo y luego elija el idioma.
IT Andare sul sito web indicato sopra per scaricare i manuali, selezionare il nome del modello e scegliere la lingua.
EL εταβετεστοναραάνωιστότοοιανακατεβάσετεεειρδια.ιλέξτετοόνοματουμοντέλουκαι,στησυνέεια,τηλσσα.
PT Aceda ao site Web acima indicado para descarregar manuais, seleccione o nome do modelo e, em seguida, escolha o idioma.
DA Gå til ovenstående websted for at downloade manualer og vælge modelnavn, og vælg derefter sprog.
SV Gå till ovanstående webbplats för att ladda ner anvisningar, välj modellnamn och välj sedan språk.
TR Kılavularıindirmekiçinyukarıdakiwebsitesinegidin,modeladınıveardındandiliseçin.
BG Посететегорепосочениебсайт,задаизтеглитеръководства,катоизберетеименамоделиследтова–език.
PL Odwiedźpowysstronęinternetow,abypobrainstrukcje,wybiernawęmodelu,anastępniejęyk.
CS řručkynalenetekestaennainternetovstráncemnnvepot,covoltemodelajayk.
SK Nawebovejstránkevyiesimôetestiahnunávody.Vybertenáovmodeluavotepoadovanjayk.
HU Akiknyvekletltshelátogassonelafentiweboldalra,válassakiamodellnevt,majdválassonnyelvet.
SL Običitegornjospletnostranaprenospriročnikoviberiteimemodela,natoiberitejeik.
RO Accesaisite-ulwebdemaisuspentruadescrcamanualele,selectaidenumireamodelului,apoialegeilimba.
ET Kasutusjuhendite allalaadimiseks minge ülaltoodud veebilehele, valige mudeli nimi ja seejärel keel.
LV Dodietiesuieprieknordtotmekavietni,lailejupieldturokasgrmatastadivlietiesmodeanosaukumuunvalodu.
LT Nordamiatsisistivadovus,apsilankykitepirmiaunurodytojeiniatinkliosvetainje,pasirinkitemodeliopavadinim,tada–kalb.
HR Kakobistepreuelipriručnike,iditenagorenavedenoweb-mjesto,odaberitenaivmodela,apotomodaberitejeik.
SR Idite na gore navedenu veb stranicu da biste preuzeli uputstva, izaberite ime modela, a zatim izaberite jezik.
NO Gå til nettstedet over for å laste ned håndbøker og velg modellnavn, og velg deretter språk.
FI Mene yllä mainitulle verkkosivulle ladataksesi oppaat, valitse mallin nimi ja valitse sitten kieli.
Manual Download
http://www.mitsubishielectric.com/ldg/ibim/

• 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.
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.
SAFETY PRECAUTIONS
Meanings of symbols displayed on indoor unit and/or outdoor unit
WARNING
(Riskoffire)
Thisunitusesa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.
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 se-
curely 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 con-
troller, 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secifiedrefrigerant(R2/
R410A) 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alianceisnotintendedforusebyersons(includ-
ing children) with reduced physical, sensory or mental ca-
pabilities, 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 turn the breaker OFF except the case of burning
smell, or when performing maintenance or inspection.
• The refrigerant leakage cannot be detected, and this may
causeafire.
Do not install the unit in a place where smoke, gas, or
chemicalsmayfill.
• Do not use any gas equipment for propane, butane or
methane, sprays such as bug killer, and paint etc., near by
the indoor unit.
• The refrigerant sensor reacts to it and displays an error. This
may cause the unit not to operate.
(rocedureincaseofrefrigerantleakage
Iftherefrigerantleaks,extinguishafiresuchasaheater,
and ventilate the room adequately by opening the window.
• Then contact your dealer.
• The indoor unit spreads the refrigerant by FAN mode to
preventafire.DonotturnthebreakerOFFduringthissitu-
ation.
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. If any refrigerant leakage
is found, ventilate the room well and consult your dealer
immediately. Do not turn the breaker OFF. If a repair in-
volves 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
operating ignition sources (for example: open 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.
This unit should be installed in rooms which exceed the
oorsacesecifiedinoutdoorunitinstallationmanual.
• Refer to outdoor unit installation manual.
This appliance is intended to be used by expert or trained
users in shops, in light industry and on farms, or for com-
mercial use by laypersons.
ENGLISH IS ORIGINAL
EN-1

Your MITSUBISHI ELECTRIC product is designed and manufactured with high
quality materials and components which can be recycled and/or reused.
This symbol means that electrical and electronic equipment, batteries and
accumulators, at their end-of-life, should be disposed of separately from your
household waste.
Ifachemicalsymbolisprintedbeneaththesymbol(Fig.1),thischemicalsym-
bol means that the battery or accumulator contains a heavy metal at a certain
concentration. This will be indicated as follows:
Hg:mercury(0.0005),Cd:cadmium(0.002),b:lead(0.004)
In the European Union there are separate collection systems for used electrical
and electronic products, batteries and accumulators.
Please, dispose of this equipment, batteries and accumulators correctly at your
local community waste collection/recycling centre.
Please, help us to conserve the environment we live in!
DISPOSAL
Fig. 1
Note:
This symbol mark is for EU countries only.
Thissymbolmarkisaccordingtothedirective2012/19/
EU Article 14 Information for users and Annex IX,and/
ortothedirective2006/66/ECArticle20Informationfor
end-users and Annex II.
To dispose of this product, consult your dealer.
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.
rovideadedicatedowersulyfortheairconditioner.
• A non-dedicated power supply may cause overheating or
fire.
Donotinstalltheunitwhere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 installa-
tion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.
For installation
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ammablesraysontheunit.
 Thismaycauseafireordeformationoftheunit.
Donotexoseetsorhouselantstodirectair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 hu-
midity(0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 preci-
sion devices or art objects.
• This may cause deterioration of quality, or harm to animals
and plants.
Donotexosecombustionaliancestodirectair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.
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 uid comes in contact with your skin or
clothes, wash them thoroughly with clean water.
 Ifthebattery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, per-
form inspection and maintenance in addition to normal
cleaning.
• Dirt or dust in the unit may create an unpleasant odor, con-
tribute 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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.
IMORTANT
Dirtyfilterscausecondensationintheairconditionerwhichwillcon-
tribute to the growth of fungi such as mold. It is therefore recommended
tocleanairfiltersevery2weeks.
To use this unit correctly and safely, be sure to read these operating instructions before use.
EN-2

Airinlet(backandside)
Refrigerant piping
Air outlet
Drain outlet
Outdoor unit
Outdoor units may be different in appearance.
*1 The manufacturing year and month is indicated on the spec name plate.
Spec name plate *1
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:
Settemperature:24C
Fan speed : Medium
Horizontal vane : Auto
Emergency COOL
Emergency HEAT
Stop
Before operation: Insert the power supply plug into the power outlet and/or
turn the breaker on.
Installing the remote controller batteries
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/decreas-
es the time by 1 minute (10
minuteswhenpressedlonger).
3. Press the DAY button
to set the day.
P
Indoor unit
Fan guard
Aircleaningfilter(Silver-
ioniedairpurifierfilter)
Airfilter(Airpurifyingfilter)
Panel
Front panel
Horizontal vane
Vertical vane
Multi-owvane
Spec name
plate *1
E.O
SW
Display and operation section
(When the front panel is opened)
Operation indicator lamp
Emergency operation
switch
Remote control receiving section
Air outlet
NAME OF EACH PART
*1 The manufacturing year and month is
indicated on the spec name plate.
EN-3

Remote controller
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
Operation
select button
ECONO COOL
button
FAN speed control
button
VANE control button
TIME, TIMER set
buttons
Increase time
Decrease time
CLOCK button
RESET button
Lid
Slide the lid down
to open the remote
controller. Slide it down
further to get to the
weekly timer buttons.
i-save button
WEEKLY TIMER
set buttons
OFF/ON(stop/operate)button
Operation select button
Temperature buttons
FAN speed control button
VANE control button
Press toselectverticalairowdirection.Each
presswillchangeairowdirectioninthefollowing
order:
• Two short beeps will be heard from the indoor unit when set to
AUTO.
• Moving the horizontal vane/multi-flow vane manually can cause
trouble.
• The horizontal vane/multi-flow vane automatically moves in certain
intervals to determine its position, and then it returns to the set posi-
tion.
 Whentheairoutletisswitchedbetween1FLOWand2FLOW,the
horizontal vanes may move and change their positions.
VANE control button
Press toselecttheairoutlet(s).
When2FLOWisselected,airblowsfromthetop
and the front of the unit. When 1 FLOW is selected,
air blows only from the top of the unit.
The multi-flow vane is automatically set to the appropriate position.
Evenif2FLOWisselected,airwillblowonlyfromthetopoftheunit
in the following conditions:
• During COOL/DRY: The room temperature is close to set tempera-
ture. The air conditioner has operated for 0.5 to 1 hour.
• During HEAT: The air flow temperature is low.
 (Duringdefrostingoperation,startofoperation,etc.)
Press to enter the weekly timer setting mode.
Press and to select setting day and number.
Press , , and to set ON/OFF, time, and tem-
perature.
Press to complete and transmit the weekly timer setting.
Press to turn the weekly timer ON. ( lights.)
Press again to turn the weekly timer OFF. ( goes
out.)
WEEKLY TIMER set buttons
ECONO COOL button
Thesettemperatureandtheairowdirectionareautomatically
changed by the microprocessor.
i-save button
Asimplified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.
PREPARATION BEFORE OPERATION
(ONtimer) :TheunitturnsONatthesettime.
(OFFtimer):TheunitturnsOFFatthesettime.
Press (Increase)and (Decrease)tosetthetime
of timer.
TIME, TIMER set buttons
Increase time / Decrease time
(AUTO) (COOL) (DRY) (HEAT) (FAN)
(AUTO) (Silent) (Low) (Med.) (High)
(AUTO) (1) (2) (3) (4) (SWING)
 (2FLOW)(1FLOW)
EN-4
ORTNNSTRTONS

CLEANING
Front panel
1. Push down the tab on the both sides of the unit to open the front panel.
2.ullthefrontpaneltowardyoutoremoveit.
3.Openthefrontpanelcompletelyandthenremoveit.
• 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.
4.Installthefrontpanelbyfollowingtheremovalprocedureinreverse.
Arcennter
(eronedrurerter
cksdeofrter
Clean 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.
(Diluted mild detergents can be used when
dirtcannotberemoved.)
• After washing, dry it well in shade.
Every year:
 Replaceitwithanewaircleaningfilterforbest
performance.
• Parts Number MAC-2370FT-E
Arter(Arurfynter
• Clean every 2 weeks
• Remove dirt by a vacuum cleaner, or rinse with water.
• After washing with water, dry it well in shade.
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.
This information is based on REGULATION(EUNo52/2012
MODEL NAME Treated Article
(artsname)
Active Substances
(CASNo.) Property Instruction for Use (Safehandlinginformation)
MF-KT25/35/50/60VG FILTER
Silver sodium hydrogen zirconium
phosphate
(265647-11-8)
Antibacterial
Antimold
• Use this product in line with the instruction manual
indications and for the intended purpose only.
• Do not put into mouth. Keep away from children.
Silverinceolite(130328-20-0) Antibacterial
• Use this product in line with the instruction manual
indications and for the intended purpose only.
• Do not put into mouth. Keep away from children.
MAC-2370FT-E FILTER Silverinceolite(130328-20-0) Antibacterial
• Use this product in line with the instruction manual
indications and for the intended purpose only.
• Do not put into mouth. Keep away from children.
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 mild detergents.
 Donotexposepartstodirectsunlight,heat,orames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.
EN-5

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?
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 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 HORIZON-
TAL VANE to be performed normally.
Theairowdirectionchanges
during operation.
The direction of the horizontal
vane/multi-owvanecannot
be adjusted with the remote
controller.
 In the heating operation, if the air ow tem-
perature is too low or when defrosting is being
done, the horizontal vane is automatically set
toverticalposition.Themulti-owvaneissetto
the closed position.
• When the air conditioner is operated in COOL
or DRY mode, if the operation continues with air
blowing horizontally for 1 hour, the direction of
theairowisautomaticallysettoposition(1)
to prevent condensed water from dropping. The
multi-owvaneissettotheclosedposition.
 The horiontal vane and the multi-ow vane
automatically moves in certain intervals to
determine its position, and then it returns to the
set position.
The operation is stopped for
about 10 minutes in the heating
operation.
• Defrosting of the outdoor unit is being done.
Since this is completed in max.10 minutes,
please wait. (When the outside temperature
is too low and humidity is too high, frost is
formed.)
The unit starts operation by
itself when the main power is
turned on, 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”.
Themulti-owvaneopensand
closes automatically.
 The multi-ow vane is automatically control-
led by a microcomputer according to the air
owtemperatureandoperationtimeoftheair
conditioner.
The indoor unit which is not
operating becomes warm and a
sound,similartowaterowing,
is heard from the unit.
 Asmallamountofrefrigerantcontinuestoow
into the indoor unit even though it is not operat-
ing.
The indoor unit discolors over
time.
 Althoughplasticturnsyellowduetotheinuence
of some factors such as ultraviolet light and
temperature, this has no effect on the product
functions.
OutdoorUnit(Multisystem
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.
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 water frozen 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?
 Isthepolarity(+,-)ofthebatteriescorrect
• Are any buttons on the remote controller of other
electric appliances being pressed?
WHEN YOU THINK THAT TROUBLE HAS OCCURRED
Symptom Explanation & Check points
Does not cool or heat
The room cannot be cooled or
heatedsufficiently.
• Is the temperature setting appropriate?
• Is the fan setting appropriate? Please change
fan speed to High or Super High.
• Is the air outlet selection is set to 1 FLOW? Set
itto2FLOW.
 Isthefilterclean
• Is the fan or heat exchanger of the indoor unit
clean?
• Are there any obstacles blocking the air inlet or
outlet of the indoor or outdoor unit?
• Is a window or door open?
• It may take a certain time to reach the setting
temperature or may not reach that depending on
the size of the room, the ambient temperature,
and the like.
The room cannot be cooled
sufficiently.
• When a ventilation fan or a gas cooker is used
in a room, the cooling load increases, resulting
inaninsufficientcooling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 heat-
ing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.
Airow
The air from the indoor unit
smells strange.
 Isthefilterclean
• 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 panel, etc. due to change in
temperature.
The sound as burbling 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
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owingis
heard.
• This is the sound of refrigerant or condensed
waterowingintheunit.
Hissing sound is sometimes
heard.
 Thisisthesoundwhentheowofrefrigerant
inside the unit is switched.
The sound of motor and swirling
sound is heard from the indoor
unit.
• This is the sound of water condensed during
COOL/DRY operation being drained from the
indoor unit.
• Sound of water draining may also be heard from
indoor units which are not operating. (The sound
willstopautomatically.leasewait.)
Timer
Weekly timer does not operate
according to settings.
• Is the ON/OFF timer set?
• Transmit the setting information of the weekly
timer to the indoor unit again. When the informa-
tion 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.
• When a power failure occurs and the main
power turns off, the indoor unit built-in clock will
be incorrect. As a result, the weekly timer may
not work normally.
Be sure to place the remote controller where
the signal can be received by the indoor unit.
The unit starts/stops the opera-
tion by itself.
• Is the weekly timer set?
Manual Download
EN-6
ORTNNSTRTONS

In the following cases, stop using the air conditioner and consult your dealer.
• When water leaks or drips from the indoor unit.
• When the left operation indicator lamp blinks.
• When the breaker trips frequently.
 TheremotecontrolsignalisnotreceivedinaroomwhereanelectronicON/OFFtypeuorescentlamp(inverter-type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.
WHEN YOU THINK THAT TROUBLE HAS OCCURRED
SPECIFICATIONS
Model
Set name — — — —
Indoor MF-KT25VG MF-KT5VG MF-KT50VG MF-KT0VG
Outdoor — — — —
Function Cooling Heating Cooling Heating Cooling Heating Cooling Heating
Power supply /N,230V,50H
Capacity kW — — — — — — — —
Input kW 0.020 0.024 0.020 0.024 0.037 0.052 0.063 0.059
Weight Indoor kg 14.5 15.0
IP code Indoor I20
LP ps MPa —
HP ps MPa 4.15
Noiselevel(Single) Indoor (Super High/
High/Med./Low/Silent) dB(A) 41/37/31/ 24/19
44/37/30/
23/19
41/37/31/
24/19
44/37/30/
23/19
48/42/37/
32/28
49/44/40/
35/29
53/46/40/
36/28
51/47/41/
35/29
Noiselevel(Multi) Indoor (Super High/
High/Med./Low/Silent) dB(A) 43/38/33/ 28/23
44/39/34/
28/24
43/38/33/
28/23
44/39/34/
28/24
48/42/37/
32/28
49/44/40/
35/29 — —
Indoor Outdoor
Cooling
Upper limit 32CDB
23CWB
*Note2
Lower limit 21CDB
15CWB
Heating
Upper limit 27CDB
—
Lower limit 20CDB
—
Note:
1. Rating condition
Cooling—Indoor: 27CDB,19CWB
 Outdoor:35CDB
Heating—Indoor: 20CDB
 Outdoor:7CDB,6CWB
2.As for specifications, please confirm your dealer and/or refer to the
catalogue.
Guaranteed operating range
DB: Dry Bulb
WB: Wet Bulb
EN-7