Mitsubishi Electric Mr.SLIM PKA-M-LA(L)2 Series User manual
INSTALLATION MANUAL
For safe and correct use, read this manual and the outdoor unit installation manual thoroughly before installing
the air-conditioner unit.
INSTALLATIONSHANDBUCH
Aus Sicherheitsgründen und zur richtigen Anwendung vor Installation der Klimaanlage die vorliegende
Bedienungsanleitung und das Installationshandbuch gründlich durchlesen.
MANUEL D’INSTALLATION
Avant d’installer le climatiseur, lire attentivement ce manuel, ainsi que le manuel d’installation de l’appareil
extérieur pour une utilisation sûre et correct.
INSTALLATIONSMANUAL
Läs bruksanvisningen och utomhusenhetens installationshandbok noga innan luftkonditioneringen installeras så
att den används på ett säkert och korrekt sätt.
INSTALLATIEHANDLEIDING
Lees deze handleiding en de installatiehandleiding van het buitenapparaat zorgvuldig door voordat u met het
installeren van de airconditioner begint.
MANUALE DI INSTALLAZIONE
Per un uso sicuro e corretto, prima di installare il condizionatore d’aria leggere attentamente il presente
manuale ed il manuale d’installazione dell’unità esterna.
MANUAL DE INSTALACIÓN
Para un uso seguro y correcto, lea detalladamente este manual de instalación antes de montar la unidad de
aire acondicionado.
MANUAL DE INSTALAÇÃO
Para uma utilização segura e correcta, leia atentamente este manual e o manual de instalação da unidade
exterior antes de instalar o aparelho de ar condicionado.
INSTALLATIONSMANUAL
Læs af sikkerhedshensyn denne manual samt manualen til installation af udendørsenheden grundigt, før du
installerer klimaanlægget.
EΓXEIPIΔIO OΔHΓIΩN EΓKATAΣTAΣHΣ
Για σωστή και ασφαλή χρήση, διαβάστε προσεκτικά αυτό το εγχειρίδιο, καθώς και το εγχειρίδιο εγκατάστασης
της εξωτερικής μονάδας, πριν από την εγκατάσταση της μονάδας κλιματιστικού.
MONTAJ ELKİTABI
Emniyetli ve doğru kullanım için, klima cihazını monte etmeden önce bu kılavuzu ve dış ünite montaj kılavuzunu
tamamıyla okuyun.
FOR INSTALLER
FÜR INSTALLATEURE
POUR L’INSTALLATEUR
FÖR INSTALLATÖREN
VOOR DE INSTALLATEUR
PER L’INSTALLATORE
PARA EL INSTALADOR
PARA O INSTALADOR
TIL INSTALLATØREN
ΓΙΑ ΑΥΤΟΝ ΠΟΥ ΚΑΝΕΙ ΤΗΝ ΕΓΚΑΤΑΣΤΑΣΗ
MONTÖR İÇİN
Português
Dansk
Svenska
Türkçe
Norsk
INSTALLASJONSHÅNDBOK
For sikkert og riktig bruk av klimaanlegget, vennligst les nøye gjennom denne bruksanvisningen før det
installeres.
FOR MONTØR
Air Conditioners
PKA-M·LA(L)2 Series
English
Deutsch
Français
Nederlands
Español
Italiano
Ελληνικά
Polski
INSTRUKCJA MONTAŻU
Aby zapewnić bezpieczne i prawidłowe korzystanie z klimatyzatora, przed montażem należy uważnie przeczy-
tać niniejszą instrukcję montażu.
DLA INSTALATORA
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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 Μεταβείτε στον παραπάνω ιστότοπο για να κατεβάσετε εγχειρίδια. Επιλέξτε το όνομα του μοντέλου και, στη συνέχεια, τη γλώσσα.
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 Kılavuzları indirmek için yukarıdaki web sitesine gidin, model adını ve ardından dili seçin.
ru Чтобы загрузить руководства, перейдите на указанный выше веб-сайт; выберите название модели, а затем язык.
uk Щоб завантажити керівництва, перейдіть на зазначений вище веб-сайт; виберіть назву моделі, а потім мову.
bg Посетете горепосочения уебсайт, за да изтеглите ръководства, като изберете име на модел и след това – език.
pl Odwiedź powyższą stronę internetową, aby pobrać instrukcje, wybierz nazwę modelu, a następnie język.
cs Příručky naleznete ke stažení na internetové stránce zmíněné výše poté, co zvolíte model a jazyk.
sk Na webovej stránke vyššie si môžete stiahnuť návody. Vyberte názov modelu a zvoľte požadovaný jazyk.
hu A kézikönyvek letöltéséhez látogasson el a fenti weboldalra, válassza ki a modell nevét, majd válasszon nyelvet.
sl Obiščite zgornjo spletno stran za prenos priročnikov; izberite ime modela, nato izberite jezik.
ro Accesaţi site-ul web de mai sus pentru a descărca manualele, selectaţi denumirea modelului, apoi alegeţi limba.
et Kasutusjuhendite allalaadimiseks minge ülaltoodud veebilehele, valige mudeli nimi ja seejärel keel.
lv Dodieties uz iepriekš norādīto tīmekļa vietni, lai lejupielādētu rokasgrāmatas; tad izvēlieties modeļa nosaukumu un valodu.
lt Norėdami atsisiųsti vadovus, apsilankykite pirmiau nurodytoje žiniatinklio svetainėje, pasirinkite modelio pavadinimą, tada – kalbą.
hr Kako biste preuzeli priručnike, idite na gore navedeno web-mjesto, odaberite naziv modela, a potom odaberite jezik.
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.
Mene yllä mainitulle verkkosivulle ladataksesi oppaat, valitse mallin nimi ja valitse sitten kieli.
Manual Download
http://www.mitsubishielectric.com/ldg/ibim/
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1. Safety precautions
Note:
The phrase “Wired remote controller” in this installation manual refers to the PAR-41MAA. If you need any information for other remote controller, please
refer to the installation manual that is included with the optional remote controller.
►Beforeinstallingtheunit,makesureyoureadallthe“SafetyPrecautions”.
►The“SafetyPrecautions”provideveryimportantpointsregardingsafety.Makesureyoufollowthem.
►Pleasereporttoyoursupplyauthorityorobtaintheirconsentbeforeconnectingthisequipmenttothepowersupplysystem.
Symbolsusedinthetext
Warning:
Describesprecautionsthatshouldbeobservedtopreventdangerofinjuryor
death to the user.
Caution:
Describesprecautionsthatshouldbeobservedtopreventdamagetothe
unit.
Symbolsusedintheillustrations
: Indicates a part which must be grounded.
: Be sure not to do.
After installation work has been completed, explain the “Safety Precautions,” use,
and maintenance of the unit to the customer according to the information in the
Operation Manual and perform the test run to ensure normal operation. Both the
Installation Manual and Operation Manual must be given to the user for keeping.
These manuals must be passed on to subsequent users.
MEANINGSOFSYMBOLSDISPLAYEDONINDOORUNITAND/OROUTDOORUNIT
WARNING
(Risk of re)
This mark is for R32 refrigerant only. Refrigerant type is written on nameplate of outdoor unit.
In case that refrigerant type is R32, this unit uses a ammable refrigerant.
If refrigerant leaks and comes in contact with re or heating part, it will create harmful gas and there is risk of re.
Read the OPERATION MANUAL carefully before operation.
Service personnel are required to carefully read the OPERATION MANUAL and INSTALLATION MANUAL before operation.
Further information is available in the OPERATION MANUAL, INSTALLATION MANUAL, and the like.
Warning:
• Carefullyreadthelabelsaffixedtothemainunit.
• Askadealeroranauthorizedtechniciantoinstall,relocateandrepairthe
unit.
• Theusershouldneverattempttorepairtheunitortransferittoanother
location.
• Forinstallationandrelocationwork,followtheinstructionsintheInstallation
Manual and use tools and pipe components specifically made for use with
refrigerantspecifiedintheoutdoorunitinstallationmanual.
• Theunitmustbeinstalledaccordingtotheinstructionsinorderto
minimizetheriskofdamagefromearthquakes,typhoons,orstrongwinds.
Anincorrectlyinstalledunitmayfalldownandcausedamageorinjuries.
• Donotaltertheunit.Itmaycausefire,electricshock,injuryorwater
leakage.
• Theunitmustbesecurelyinstalledonastructurethatcansustainits
weight.
• Theapplianceshallbestoredinawell-ventilatedareawheretheroomsize
corresponds to the room area as specified for operation.
• If the air conditioner is installed in a small room or closed room, measures
mustbetakentopreventtherefrigerantconcentrationintheroomfrom
exceedingthesafetylimitintheeventofrefrigerantleakage.Shouldthe
refrigerantleakandcausetheconcentrationlimittobeexceeded,hazards
duetolackofoxygenintheroommayresult.
• Keepgas-burningappliances,electricheaters,andotherfiresources
(ignitionsources)awayfromthelocationwhereinstallation,repair,and
otherairconditionerworkwillbeperformed.
Ifrefrigerantcomesintocontactwithaflame,poisonousgaseswillbe
released.
• Ventilatetheroomifrefrigerantleaksduringoperation.Ifrefrigerantcomes
intocontactwithaflame,poisonousgaseswillbereleased.
• Allelectricworkmustbeperformedbyaqualifiedtechnicianaccordingto
localregulationsandtheinstructionsgiveninthismanual.
• Do not use intermediate connection of the electric wires.
• Useonlyspecifiedcablesforwiring.Thewiringconnectionsmustbemade
securelywithnotensionappliedontheterminalconnections.Also,never
splicethecablesforwiring(unlessotherwiseindicatedinthisdocument).
Failuretoobservetheseinstructionsmayresultinoverheatingorafire.
• Wheninstallingorrelocating,orservicingtheairconditioner,useonlythe
specifiedrefrigerantwrittenonoutdoorunittochargetherefrigerantlines.
Donotmixitwithanyotherrefrigerantanddonotallowairtoremaininthe
lines.
Ifairismixedwiththerefrigerant,thenitcanbethecauseofabnormalhigh
pressureintherefrigerantline,andmayresultinanexplosionandother
hazards.
Theuseofanyrefrigerantotherthanthatspecifiedforthesystemwill
causemechanicalfailureorsystemmalfunctionorunitbreakdown.Inthe
worstcase,thiscouldleadtoaseriousimpedimenttosecuringproduct
safety.
• Theapplianceshallbeinstalledinaccordancewithnationalwiring
regulations.
• Thisapplianceisnotintendedforusebypersons(includingchildren)with
reducedphysical,sensoryormentalcapabilities,orlackofexperience
andknowledge,unlesstheyhavebeengivensupervisionorinstruction
concerninguseoftheappliancebyapersonresponsiblefortheirsafety.
• Childrenshouldbesupervisedtoensurethattheydonotplaywiththe
appliance.
• Theterminalblockcoverpaneloftheunitmustbefirmlyattached.
• Ifthesupplycordisdamaged,itmustbereplacedbythemanufacturer,its
serviceagentorsimilarlyqualifiedpersonsinordertoavoidahazard.
• Useonlyauthorizedaccessoriesandaskadealeroranauthorized
technician to install them.
Ifaccessoriesareincorrectlyinstalled,waterleakage,electricshock,orfire
may result.
• Afterinstallationhasbeencompleted,checkforrefrigerantleaks.If
refrigerantleaksintotheroomandcomesintocontactwiththeflameofa
heaterorportablecookingrange,poisonousgaseswillbereleased.
• Donotusemeanstoacceleratethedefrostingprocessortoclean,other
thanthoserecommendedbythemanufacturer.
• Theapplianceshallbestoredinaroomwithoutcontinuouslyoperating
ignitionsources(forexample:openflames,anoperatinggasapplianceor
anoperatingelectricheater).
• Donotpierceorburn.
• Beawarethatrefrigerantsmaynotcontainanodour.
• Pipe-workshallbeprotectedfromphysicaldamage.
• Theinstallationofpipe-workshallbekepttoaminimum.
• Compliancewithnationalgasregulationsshallbeobserved.
• Keepanyrequiredventilationopeningsclearofobstruction.
• Donotuselowtemperaturesolderalloyincaseofbrazingtherefrigerant
pipes.
• Whenperformingbrazingwork,besuretoventilatetheroomsufficiently.
Makesurethattherearenohazardousorflammablematerialsnearby.
Whenperformingtheworkinaclosedroom,smallroom,orsimilar
location,makesurethattherearenorefrigerantleaksbeforeperforming
thework.
Ifrefrigerantleaksandaccumulates,itmayigniteorpoisonousgasesmay
bereleased.
Contents
1. Safety precautions.............................................................................................1
2. Installation location............................................................................................2
3. Installing the indoor unit ....................................................................................3
4. Installing the refrigerant piping ..........................................................................6
5. Drainage piping work.........................................................................................7
6. Electrical work ...................................................................................................8
7. Test run............................................................................................................14
8. Easy maintenance function .............................................................................18
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Fig.2-1
2. Installation location
2.1. Outlinedimensions(Indoorunit)(Fig.2-1)
Select a proper position allowing the following clearances for installation and
maintenance.
(mm)
D W H ABCDE
237 898 299 Min. 150 Min. 50 Min. 50 Min. 250 Min. 260
F Air outlet: Do not place an obstacle within 1500 mm of the air outlet.
G Floor surface
H Furnishing
I When the projection dimension of a curtain rail or the like from the wall exceeds 60 mm,
extra distance should be taken because the fan air current may create a short cycle.
J 1800 mm or greater from the floor surface (for high location mounting)
K 75 mm or greater with left, rear left, or lower left piping, and optional drain pump
installation. (Use the hook positioned on the lower part of the mount board when the
dimension is 55 mm or greater and less than 75 mm (Less than 55 mm: NG). Refer to 3.5.
for details.)
L 350 mm or greater with optional drain pump installation
M Refer to Fig.2-2.
A
B
L
W
H
H
E
J
M
I
D
C
D
K
F
G
1.2. Beforeinstallation or relocation
Caution:
• Beextremelycarefulwhentransportingtheunits.Twoormorepersons
areneededtohandletheunit,asitweighs20kgormore.Donotgraspthe
packagingbands.Wearprotectiveglovesasyoucaninjureyourhandson
the fins or other parts.
• Besuretosafelydisposeofthepackagingmaterials.Packagingmaterials,
suchasnailsandothermetalorwoodenpartsmaycausestabsorother
injuries.
• Thermalinsulationoftherefrigerantpipeisnecessarytoprevent
condensation.Iftherefrigerantpipeisnotproperlyinsulated,condensation
willbeformed.
1.1. Before installation(Environment)
Caution:
• Donotusetheunitinanunusualenvironment.Iftheairconditioneris
installedinareasexposedtosteam,volatileoil(includingmachineoil),or
sulfuricgas,areasexposedtohighsaltcontentsuchastheseaside,the
performancecanbesignificantlyreducedandtheinternalpartscanbe
damaged.
• Donotinstalltheunitwherecombustiblegasesmayleak,beproduced,
flow,oraccumulate.Ifcombustiblegasaccumulatesaroundtheunit,fireor
explosionmayresult.
• Donotkeepfood,plants,cagedpets,artwork,orprecisioninstrumentsin
the direct airflow of the indoor unit or too close to the unit, as these items
canbedamagedbytemperaturechangesordrippingwater.
• Whentheroomhumidityexceeds80%orwhenthedrainpipeisclogged,
water may drip from the indoor unit. Do not install the indoor unit where
suchdrippingcancausedamage.
• Wheninstallingtheunitinahospitalorcommunicationsoffice,be
preparedfornoiseandelectronicinterference.Inverters,homeappliances,
high-frequencymedicalequipment,andradiocommunicationsequipment
cancausetheairconditionertomalfunctionorbreakdown.Theair
conditionermayalsoaffectmedicalequipment,disturbingmedicalcare,
andcommunicationsequipment,harmingthescreendisplayquality.
• Placethermalinsulationonthepipestopreventcondensation.Ifthe
drainpipeisinstalledincorrectly,waterleakageanddamagetotheceiling,
floor, furniture, or other possessions may result.
• Donotcleantheairconditionerunitwithwater.Electricshockmayresult.
• Tightenallflarenutstospecificationusingatorquewrench.Iftightened
toomuch,theflarenutcanbreakafteranextendedperiod.
1.3. Beforeelectricwork
Caution:
• Besuretoinstallcircuitbreakers.Ifnotinstalled,electricshockmayresult.
• Forthepowerlines,usestandardcablesofsufficientcapacity.Otherwise,a
shortcircuit,overheating,orfiremayresult.
• Wheninstallingthepowerlines,donotapplytensiontothecables.
• Besuretogroundtheunit.Iftheunitisnotproperlygrounded,electric
shockmayresult.
• Usecircuitbreakers(groundfaultinterrupter,isolatingswitch(+Bfuse),
andmoldedcasecircuitbreaker)withthespecifiedcapacity.Ifthecircuit
breakercapacityislargerthanthespecifiedcapacity,breakdownorfire
may result.
1.4. Beforestartingthetestrun
Caution:
• Turnonthemainpowerswitchmorethan12hoursbeforestarting
operation.Startingoperationjustafterturningonthepowerswitchcan
severelydamagetheinternalparts.
• Beforestartingoperation,checkthatallpanels,guardsandother
protectivepartsarecorrectlyinstalled.Rotating,hot,orhighvoltageparts
cancauseinjuries.
• Do not operate the air conditioner without the air filter set in place. If the air
filterisnotinstalled,dustmayaccumulateandbreakdownmayresult.
• Donottouchanyswitchwithwethands.Electricshockmayresult.
• Donottouchtherefrigerantpipeswithbarehandsduringoperation.
• Afterstoppingoperation,besuretowaitatleastfiveminutesbeforeturning
offthemainpowerswitch.Otherwise,waterleakageorbreakdownmay
result.
1. Safety precautions
Fig.2-2
(mm)
IWith Optional DRAIN PUMP
60 or less More than 60
MMin. 7 Min. 60 Min. 250
* Please keep space to make vane to act.
Ⓘ
Ⓜ
VG79Y436H01_01en.indd 2 05-May-21 15:13:24
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I H
J
100
Fig.3-1
15
0
125
165
231.7
274.2
321.2
350.2
364
15
125
165
231.7
285.2
321.2
350.2
364
7.2
0
16
32.2
76
107.2
132.2
157.2
244.7
257.2
44.7
119.7
287.2
0
391.5
449
128.8
141.8
282.5
449
230
0
274
25
69.7
123.5
177.2
57.2
82.2
189.7
23.5
25
212
238
F
G
CEDB
A
Fig.3-2
(mm)
Fig.3-3
A
C
DE
BA Sleeve
B Hole
C (Indoors)
D Wall
E (Outdoors)
3. Installingtheindoorunit
3.1. Checktheindoorunitaccessories(Fig.3-1)
The indoor unit should be supplied with the following accessories.
PART
NUMBER ACCESSORY QUANTITY LOCATION OF
SETTING
1Mount board 1
Fix at the back of
the unit
2Tapping screw 4 × 25 12
3Felt tape 3
4Band 4
5*Wireless remote controller 1
6*Remote controller holder 1
7*Alkali batteries (size AAA) 2
8*Tapping screw 3.5 ×16 2
1 2
3 4
5 *6 *
7 *8 *
Hole centre
side
* PKA-M·LAL2 only
3.2. Installingthewallmountingfixture
3.2.1. Settingthewallmountingfixtureandpipingpositions
►Usingthewallmountingfixture,determinetheunit’sinstallationposition
andthelocationsofthepipingholestobedrilled.
Warning:
Beforedrillingaholeinthewall,youmustconsultthebuildingcontractor.
[Fig.3-2]
A Mount board 1
B Indoor unit
C Bottom left rear pipe hole (ø75)
D Bottom right rear pipe hole (ø75)
E Knockout hole for left rear hole (105×300)
F Bolt hole (4-ø9 hole)
G Tapping hole (6-ø4.3 hole)
H Hole centre
I Align the scale with the line.
J Insert scale.
3.2.2. Drillingthepipinghole(Fig.3-3)
►Useacoredrilltomakeaholeof75-80mmdiameterinthewallinthe
pipingdirection,atthepositionshowninthediagramtotheleft.
►Theholeshouldinclinesothattheoutsideopeningislowerthanthe
insideopening.
►Insertasleeve(witha75mmdiameterandpurchasedlocally)throughthe
hole.
Note:
Thepurposeofthehole’sinclinationistopromotedrainflow.
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3. Installingtheindoorunit
Fig.3-6
B
A
C
E
D
3.2.3. Installingthewallmountingfixture
►Sincetheindoorunitweighsnear13kg,selectionofthemounting
locationrequiresthoroughconsideration.Ifthewalldoesnotseemtobe
strongenough,reinforceitwithboardsorbeamsbeforeinstallation.
►Themountingfixturemustbesecuredatbothendsandatthecentre,if
possible.Neverfixitatasinglespotorinanynonsymetricalway.
(Ifpossible,securethefixtureatallthepositionsmarkedwithabold
arrow.)
Warning:
Ifpossible,securethefixtureatallpositionsindicatedwithaboldarrow.
Caution:
• Theunitbodymustbemountedhorizontally.
• Fastenattheholesasshownbythearrows.
(Fig.3-4)
A Min. 119 mm (669 mm or greater with optional drain pump installation)
B Min. 224 mm
C Min. 75 mm (Use the hook positioned on the lower part of the mount board when the
dimension is less than 100 mm with left, rear left, or lower left piping, and optional drain
pump installation. Refer to 3.5. for details.)
D Fixing screws (4 × 25) 2
E Level
F Mount board 1
3.3. Whenembeddingpipesintothewall(Fig.3-5)
• The pipes are on the bottom left.
• When the cooling pipe, drain pipes internal/external connection lines etc are to
be embedded into the wall in advance, the extruding pipes etc, may have to be
bent and have their length modified to suit the unit.
• Use marking on the mount board as a reference when adjusting the length of the
embedded cooling pipe.
• During construction, give the length of the extruding pipes etc some leeway.
A Mount board 1
B Reference marking for flare connection
C Through hole
D On-site piping
3.4. Preparingtheindoorunit
* Check beforehand because the preparatory work will differ depending on the
exiting direction of the piping.
* When bending the piping, bend gradually while maintaining the base of the
piping exiting portion. (Abrupt bending will cause misshaping of the piping.)
* Cut off outlet of the pipe depending on the exiting direction of the piping.
Extractionandprocessingofthepipingandwiring(Fig.3-6)
1. Connection of indoor/outdoor wiring → See page 8.
2. Wrap the felt tape 3in the range of the refrigerant piping and drain hose which
will be housed within the piping space of the indoor unit.
• Wrap the felt tape 3securely from the base for each of the refrigerant piping
and the drain hose.
• Overlap the felt tape 3at one-half of the tape width.
• Fasten the end portion of the wrapping with vinyl tape.
A Liquid pipe
B Gas pipe
C Indoor/outdoor connection cable
D Drain hose
E Felt tape 3
3. Be careful that the drain hose is not raised, and that contact is not made with the
indoor unit box body.
Do not pull the drain hose forcefully because it might come out.
Rear,rightandlowerpiping(Fig.3-7)
1) Be careful that the drain hose is not raised, and that contact is not made with
the indoor unit box body.
Arrange the drain hose at the underside of the piping and wrap it with felt
tape 3.
2) Securely wrap the felt tape 3starting from the base. (Overlap the felt tape at
one-half of the tape width.)
A Cut off for right piping.
B Cut off for lower piping.
A
B
C
DD
D
F
E
D
D
Fig.3-5
B
A
C
D
Fig.3-7
B
A
1)2)
Fig.3-4
: Points to be fastened (5 points)
: Points to be fastened only when
using the lower hook (2 points)
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3. Installingtheindoorunit
Leftandleftrearpiping(Fig.3-8)
4. Drain hose replacement → See 5. Drainage piping work.
Be sure to replace the drain hose and the drain cap for the left and rear left
piping. Dripping may occur if you forget to install or fail to replace these parts.
CDrain cap
1) Be careful that the drain hose is not raised, and that contact is not made with
the indoor unit box body.
2) Securely wrap the felt tape 3starting from the base. (Overlap the felt tape at
one-half of the tape width.)
3) Fasten the end portion of the felt tape 3with vinyl tape.
D Cut off for left piping.
Fig.3-8
C
D
1)
3)
2)
Fig.3-9
Fig.3-10
Fig.3-11
BA
C
D
A
C
B
C
A
B
3.5. Mountingtheindoorunit
1. Affix the mount board 1to the wall.
2. Hang the indoor unit on the hook positioned on the upper part of the mount
board.
Rear,rightandlowerpiping(Fig.3-9)
3. While inserting the refrigerant piping and drain hose into the wall penetration
hole (penetration sleeve), hang the top of the indoor unit to the mount board 1.
4. Move the indoor unit to the left and right, and verify that the indoor unit is hung
securely.
5. Fasten by pushing the bottom part of the indoor unit onto the mount board 1.
(Fig. 3-10)
* Check that the knobs on the bottom of the indoor unit are securely hooked into
the mount board 1.
6. After installation, be sure to check that the indoor unit is installed level.
A Mount board 1
B Indoor unit
C Hook
D Square hole
Leftandleftrearpiping(Fig.3-11)
3. While inserting the drain hose into the wall penetration hole (penetration sleeve),
hang the top of the indoor unit to the mount board 1.
Cut part of the shipping box and wrap into a cylindrical form as illustrated in the
diagram. Hook this to the rear surface rib as a spacer, and raise the indoor unit.
4. Connect the refrigerant piping with the site-side refrigerant piping.
5. Fasten by pushing the bottom part of the indoor unit onto the mount board 1.
* Check that the knobs on the bottom of the indoor unit are securely hooked into
the mount board 1.
6. After installation, be sure to check that the indoor unit is installed level.
AIndoor unit
BShipping box
C Spacer (Cut out a piece of card board from shipping box.)
Note:
• Whentheindoorunitcannotbehangedandliftedupwiththeregularhook
(the dimension of 2.1. K(theclearancebetweentheceilingandtheunit)is
75mmorless),hangtheunitonthelowerhookforleftpiping.(Fig.3-12)
• Thelowerhookisatemporaryhookonlyforinstallation.Whenthe
installationisdone,besuretohangtheindoorunitontheregularhook.
Theindoorunitcannotbeoperatedwhileitishangedonthelowerhook.
(Fig.3-12)
ARegular hook
BLower hook for left piping
CSpacer
DFixing screw 2
* When using the lower hook, be sure to screw on the base of the lower hook with
a fixing screw 2, otherwise the indoor unit will fall.
C
A
B
D
Fig.3-12
VG79Y436H01_01en.indd 5 05-May-21 15:13:26
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4. Installingtherefrigerantpiping
4.3. Positioningrefrigerantanddrainpiping(Fig.4-3)
A Gas pipe * Indicates the condition with accessories mounted.
B Liquid pipe
C Drain hose (Effective length: 500)
D Left-side piping knockout hole
E Right-side piping knockout hole
F Lower piping knockout hole
GMount board 1
C
5
533(B)
450(A)
49 650 199
898
299
237
D
E
F
F
G
178
192
160
Fig.4-3
LEFT FRONT
FRONT (OPEN THE GRILLE)
BOTTOM
RIGHT
A Flare cutting dimensions
Copper pipe O.D. (mm) Flare dimensions øA
dimensions (mm)
ø6.35 8.7 - 9.1
ø12.7 16.2 - 16.6
øA
A
B
C
D
Fig.4-1
4.1. Precautions
FordevicesthatuseR32/R410Arefrigerant
• Usealkylbenzeneoil(smallamount)astherefrigerationoilappliedtothe
flared sections.
• UseC1220copperphosphorusforcopperandcopperalloyseamless
pipes,toconnecttherefrigerantpipes.Userefrigerantpipeswiththe
thicknessesspecifiedinthetablebelow.Makesuretheinsidesofthepipes
are clean and do not contain any harmful contaminants such as sulfuric
compounds,oxidants,debris,ordust.
Warning:
Wheninstallingorrelocating,orservicingtheairconditioner,useonlythe
specifiedrefrigerantwrittenonoutdoorunittochargetherefrigerantlines.
Donotmixitwithanyotherrefrigerantanddonotallowairtoremaininthe
lines.
Ifairismixedwiththerefrigerant,thenitcanbethecauseofabnormalhigh
pressureintherefrigerantline,andmayresultinanexplosionandother
hazards.
Theuseofanyrefrigerantotherthanthatspecifiedforthesystemwillcause
mechanicalfailureorsystemmalfunctionorunitbreakdown.Intheworst
case,thiscouldleadtoaseriousimpedimenttosecuringproductsafety.
ø6.35 thickness 0.8 mm ø9.52 thickness 0.8 mm
ø12.7 thickness 0.8 mm ø15.88 thickness 1.0 mm
• Donotusepipesthinnerthanthosespecifiedabove.
4.2. Connectingpipes(Fig.4-1)
• When commercially available copper pipes are used, wrap liquid and gas pipes
with commercially available insulation materials (heat-resistant to 100 °C or
more, thickness of 12 mm or more).
• The indoor parts of the drain pipe should be wrapped with polyethylene foam
insulation materials (specific gravity of 0.03, thickness of 9 mm or more).
• Apply thin layer of refrigerant oil to pipe and joint seating surface before
tightening flare nut.
• Use two wrenches to tighten piping connections.
• Use refrigerant piping insulation provided to insulate indoor unit connections.
Insulate carefully.
• After connecting the refrigerant piping to the indoor unit, be sure to test the pipe
connections for gas leakage with nitrogen gas. (Check that there is no refrigerant
leakage from the refrigerant piping to the indoor unit.)
• Use flared nut installed to this indoor unit.
• In case of reconnecting the refrigerant pipes after detaching, make the flared part
of pipe re-fabricated.
B Flare nut tightening torque
Copper pipe O.D. (mm) Flare nut O.D. (mm) Tightening torque (N·m)
ø6.35 17 14 - 18
ø12.7 28 49 - 61
C Apply refrigerating machine oil over the entire flare seat surface.
Do not apply refrigerating machine oil to the screw portions.
(This will make the flare nuts more apt to loosen.)
D Be certain to use the flare nuts that are attached to the main unit.
(Use of commercially-available products may result in cracking.)
Warning:
Wheninstallingtheunit,securelyconnecttherefrigerantpipesbeforestart-
ingthecompressor.
90°±0.5°
45°±2°
R0.4 - R0.8
Fig.4-2
E
F
B
Copper pipe O.D. (mm)
B (mm)
Flare tool for R32/R410A
Clutch type
ø6.35 (1/4”) 0 - 0.5
ø12.7 (1/2”) 0 - 0.5
EDie
FCopper pipe
VG79Y436H01_01en.indd 6 05-May-21 15:13:27
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4. Installingtherefrigerantpiping
Fig.4-5
A
B
D
C
4.4. Refrigerantpiping(Fig.4-4)
Indoor unit
1. Remove the flare nut and cap of the indoor unit.
2. Make a flare for the liquid pipe and gas pipe and apply refrigerating machine oil
(available from your local supplier) to the flare sheet surface.
3. Quickly connect the on site cooling pipes to the unit.
4. Wrap the pipe cover that is attached to the gas pipe and make sure that the
connection join is not visible.
5. Wrap the pipe cover of the unit’s liquid pipe and make sure that it covers the
insulation material of the on site liquid pipe.
6. The portion where the insulation material is joined is sealed by taping.
A Site-side refrigerant piping
B Unit side refrigerant piping
4.4.1. Storinginthepipingspaceoftheunit(Fig.4-5)
1. Wrap the supplied felt tape in the range of the refrigerant piping which will be
housed within the piping space of the unit to prevent dripping.
2. Overlap the felt tape at one-half of the tape width.
3. Fasten the end portion of the wrapping with vinyl tape, etc.
A Gas pipe
BLiquid pipe
CIndoor/outdoor connection cable
DFelt tape 3
Fig.4-4
B
A
Fig.5-1
5. Drainagepipingwork
AB
C
E
D
C
F
C
G
H
I
J
K
5.1. Drainagepipingwork(Fig.5-1)
• Drain pipes should have an inclination of 1/100 or more.
• For extension of the drain pipe, use a soft hose (inner dia. 15 mm) available on
the market or hard vinyl chloride pipe (VP-16/O.D. ø22 PVC TUBE). Make sure
that there is no water leakage from the connections.
• Do not put the drain piping directly in a drainage ditch where sulphuric gas may
be generated.
• When piping has been completed, check that water flows from the end of the
drain pipe.
Caution:
ThedrainpipeshouldbeinstalledaccordingtothisInstallationManualto
ensurecorrectdrainage.Thermalinsulationofthedrainpipesisnecessary
topreventcondensation.Ifthedrainpipesarenotproperlyinstalledand
insulated,condensationmaydripontheceiling,floororotherpossessions.
A Inclined downwards
B Must be lower than outlet point
C Water leakage
D Trapped drainage
E Air
F Wavy
G The end of drain pipe is under water.
H Drainage ditch
I5 cm or less between the end of drain pipe and the ground.
J Drain hose
K Soft PVC hose (Inside diameter 15 mm)
or
Hard PVC pipe (VP-16)
* Bond with PVC type adhesive
Preparingleftandleftrearpiping(Fig.5-2)
1 Remove the drain cap.
• Remove the drain cap by holding the bit that sticks out at the end of the pipe and
pulling.
A Drain cap
2 Remove the drain hose.
• Remove the drain hose by holding on to the base of the hose a(shown by
arrow) and pulling towards yourself b.
3 Insert the drain cap.
• Insert a screwdriver etc into the hole at the end of the pipe and be sure to push
to the base of the drain cap.
4 Insert the drain hose.
• Push the drain hose until it is at the base of the drain box connection outlet.
• Please make sure the drain hose hook is fastened properly over the extruding
drain box connection outlet.
B Hooks
A
A
1
3
Fig.5-2
a
b
A
B
2
4
VG79Y436H01_01en.indd 7 05-May-21 15:13:28
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5. Drainagepipingwork
♦ Storinginthepipingspaceoftheindoorunit(Fig.5-3)
* When the drain hose will be routed indoors, be sure to wrap it with commercially
available insulation.
* Gather the drain hose and the refrigerant piping together and wrap them with the
supplied felt tape 3.
* Overlap the felt tape 3at one-half of the tape width.
* Fasten the end portion of the wrapping with vinyl tape, etc.
A Gas pipe
B Liquid pipe
C Drain hose
D Indoor/outdoor connection wiring
E Felt tape 3
♦ Checkofdrainage(Fig.5-4)
1. Open the front grille and remove the filter.
2. Facing the fins of the heat exchanger, slowly fill with water.
3. After the drainage check, attach the filter and close the grille.
Fig.5-3
Fig.5-4
A
B
D
E
C
6. Electricalwork
6.1. Electricwiring
[Fig.6-1]
Connection can be made without removing the front panel.
1. Open the front grille, remove the screw (2 pieces), and remove the electrical box
cover.
* Electrical work can be conducted more effectively with the panel removed.
When attaching the panel, check that the hooks Kat three locations on the air
outlet side are connected securely.
2. Securely connect each wire to the terminal block.
* In consideration of servicing, provide extra length for each of the wires.
* Take care when using strand wires, because beards may cause the wiring to
short out.
3. Install the parts that were removed back to their original condition.
4. Fasten each of the wires with the clamp under the electrical parts box.
A Electrical box cover
B Fixing screw
C Clamp
D Ground wire connection portion
E MA remote control terminal block: (1, 2) do not have polarity
F Terminal block for indoor and outdoor units connection: S1, S2 and S3, have polarity
G Terminal screw
H Remote control cable
I Indoor-outdoor connection cable
J Ground wire
K Hook
L Band
Caution:
Wiringforremotecontrollercableshallbeapart(5cmormore)frompower
sourcewiringsothatitisnotinfluencedbyelectricnoisefrompowersource
wiring.
C
L
H
I
J
F
D
E
A
B
B
G
IH
E
F
H
J I
D
K
Secure with a band
L
at the location shown
in the diagram
Fig.6-1
Indoor unit side
55 mm
12 mm
• If the cables have the same diameter,
insert them into the cut outs on both
sides.
• If the cables have different diameters,
insert them on one side into separate
spaces with one cable positioned above
the other.
<When wiring two indoor-outdoor connection cables>
WARNING
• Connecting two wires on one side is
prohibited.
• Connecting three wires or more to the
same terminal is prohibited.
• Connecting wires with different diameters
is prohibited.
When using a single cable, a round crimped terminal or other
terminal work is prohibited.
Cut outs
Fig.6-2 Fig.6-3
VG79Y436H01_01en.indd 8 05-May-21 15:13:29
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6.1.1. Indoorunitpowersuppliedfromoutdoorunit
The following connection patterns are available.
The outdoor unit power supply patterns vary on models.
1
2
S1
S2
S3
F
G
S1
S2
L
N
S3
AB C
D
E
S1
S2
L
N
1
2
S1
S2
S3
S1
S2
S3
S3
S1
S2
S3
S1
S2
S3
D
E
F
G G G G
AB C
Simultaneous twin/triple/quadruple system
* Affix a label A that is included with the manuals near each wiring diagram for the indoor and outdoor units.
A Outdoor unit power supply
B Earth leakage breaker
C Wiring circuit breaker or isolating switch
D Outdoor unit
E Indoor/outdoor unit connecting cords
F Wired remote controller (option)
G Indoor unit
* Affix a label A that is included with the manuals near each wiring diagram for the indoor and outdoor units.
A Outdoor unit power supply
B Earth leakage breaker
C Wiring circuit breaker or isolating switch
D Outdoor unit
E Indoor/outdoor unit connecting cords
F Wired remote controller (option)
G Indoor unit
1:1 System
6. Electricalwork
Indoor unit model PKA-M·LA(L)2 Series
Wiring Wire
No. × size
(mm2)
Indoor unit-Outdoor unit *1 3 × 1.5 (Polar)
Indoor unit-Outdoor unit earth *1 1 × Min. 1.5
Indoor unit earth 1 × Min. 1.5
Wired remote controller (option) Indoor unit *2 2 × Min. 0.3
Circuit
rating
Indoor unit L-N *3 –
Indoor unit-Outdoor unit S1-S2 *3 230 V AC
Indoor unit-Outdoor unit S2-S3 *3 *4 24 V DC / 28 V DC
Wired remote controller (option) Indoor unit *3 12 V DC
*1. <For 35-140 outdoor unit application>
Max. 45 m
If 2.5 mm2used, Max. 50 m
If 2.5 mm2used and S3 separated, Max. 80 m
<For 200/250 outdoor unit application>
Max. 18 m
If 2.5 mm2used, Max. 30 m
If 4 mm2used and S3 separated, Max. 50 m
If 6 mm2used and S3 separated, Max. 80 m
*2. Max. 500 m
(When using 2 remote controllers, the maximum wiring length for the remote controller cables is 200 m.)
*3. The figures are NOT always against the ground.
S3 terminal has 24 V DC / 28 V DC against S2 terminal. However between S3 and S1, these terminals are not electrically insulated by the transformer or other device.
*4. It depends on the outdoor unit.
Notes: 1. Wiringsizemustcomplywiththeapplicablelocalandnationalcode.
2. PowersupplycordsandIndoorunit/Outdoorunitconnectingcordsshallnotbelighterthanpolychloroprenesheathedflexiblecord.(Design60245IEC
57)
3. Installanearthlongerthanothercords.
4. Indoorandoutdoorconnectingwireshavepolarities.Makesuretomatchtheterminalnumber(S1,S2,S3)forcorrectwirings.
5. Wiringforremotecontrollercableshallbeapart(50mmormore)frompowersourcewiringsothatitisnotinfluencedbyelectricnoisefrompower
sourcewiring.
VG79Y436H01_01en.indd 9 05-May-21 15:13:29
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Indoor unit model PKA-M·LA(L)2 Series
Indoor unit power supply ~/N (single), 50 Hz, 230 V
Indoor unit input capacity *1
Main power switch (Breaker) 16 A
Wiring
Wire No. × size
(mm2)
Indoor unit power supply & earth 3 × Min. 1.5
Indoor unit earth 1 × Min. 1.5
Indoor unit-Outdoor unit *2 2 × Min. 0.3
Indoor unit-Outdoor unit earth –
Wired remote controller (option) Indoor unit *3 2 × Min. 0.3 (Non-polar)
Circuit
rating
Indoor unit L-N *4 230 V AC
Indoor unit-Outdoor unit S1-S2 *4 –
Indoor unit-Outdoor unit S2-S3 *4 *5 24 V DC / 28 V DC
Wired remote controller (option) Indoor unit *4 12 V DC
*1. A breaker with at least 3 mm contact separation in each pole shall be provided. Use non-fuse breaker (NF) or earth leakage breaker (NV).
*2. Max. 120 m
*3. Max. 500 m
(When using 2 remote controllers, the maximum wiring length for the remote controller cables is 200 m.)
*4. The figures are NOT always against the ground.
*5. It depends on the outdoor unit.
Notes: 1. Wiringsizemustcomplywiththeapplicablelocalandnationalcode.
2.
Powersupplycordsandindoorunit/outdoorunitconnectingcordsshallnotbelighterthanpolychloroprenesheathedflexiblecord.(Design60245IEC57)
3. Installanearthlongerthanothercables.
4. Wiringforremotecontrollercableshallbeapart(50mmormore)frompowersourcewiringsothatitisnotinfluencedbyelectricnoisefrompower
sourcewiring.
Never splice the power cable or the indoor-outdoor connection cable, otherwise it may result in a smoke, a re or communication failure.
Warning:
6. Electricalwork
Indoor power supply terminal kit (option) Required
Indoor unit electrical box connector
connection change Required
Label affixed near each wiring diagram
for the indoor and outdoor units Required
Outdoor unit DIP switch settings (when
using separate indoor unit/outdoor unit
power supplies only) ON
OFF 1 2 (SW8)
3
Set the SW8-3 to ON.
* The indoor power supply terminal kits are required.
If the indoor and outdoor units have separate power supplies, refer to the table
below. If the indoor power supply terminal kit is used, change the indoor unit
electrical box wiring refering to the figure in the right and the DIP switch settings of
the outdoor unit control board.
Refer to the installation manual for the Power supply terminal kit.
* Affix label B that is included with the manuals near each wiring diagram for the indoor and outdoor units.
Note:
Someunitscannotbeusedinasimultaneoustwin/triple/quadruplesystem.Refertotheoutdoorunitinstallationmanualfordetails.
AOutdoor unit power supply
BEarth leakage breaker
CWiring circuit breaker or isolating switch
DOutdoor unit
EIndoor unit/outdoor unit connecting cables
FRemote controller
GIndoor unit
HOption
JIndoor unit power supply
* There are 3 types of labels (labels A, B and C). Affix the appropriate labels to the
units according to the wiring method.
Simultaneous twin/triple/quadruple system
<Replacing the indoor unit terminal block>
Install the optional Power supply terminal kit.
Refer to the installation manual that comes
with the optional Power supply terminal kit
for details.
1Secure the terminal block with the screw.
2Fix the round terminal with the screw.
3 Connect connector CN01 (black) to the
indoor controller board.
4 Connect connector CN3C (blue) to the
indoor controller board.
1 Disconnect connector CN3C (blue) from
the indoor controller board.
2 Disconnect connector CN01 (black) from
the indoor controller board.
3Remove the screw.
4Remove the screw from the terminal block.
6.1.2. Separateindoorunit/outdoorunitpowersupplies(ForPUHZ/PUZapplicationonly)
The following connection patterns are available.
The outdoor unit power supply patterns vary on models.
* The indoor power supply terminal kit is required.
* Affix label B that is included with the manuals near each wiring diagram for the indoor and outdoor units.
AOutdoor unit power supply
BEarth leakage breaker
CWiring circuit breaker or isolating switch
DOutdoor unit
EIndoor unit/outdoor unit connecting cables
FRemote controller
GIndoor unit
HOption
JIndoor unit power supply
1:1 System
AB C
D
G
J
B C
H
E
F
ABC
D
G G G G
JB C
H
E
F
CN3C
CN01
3 4
2
1
1
2
3
4
CN3C
CN01
VG79Y436H01_01en.indd 10 05-May-21 15:13:30
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6. Electricalwork
6.2. Functionsettings
6.2.1. Bywiredremotecontroller
1 (Fig. 6-4)
• Select “Service” from the Main menu, and press the [SELECT] button.
• Select “Settings” from the Service menu, and press the [SELECT] button.
2 (Fig. 6-5)
• Select “Function settings” with the [SELECT] button.
3 (Fig. 6-6)
• Set the indoor unit refrigerant addresses and unit numbers with the [F1]
through [F4] buttons, and then press the [SELECT] button to confirm the
current setting.
<CheckingtheIndoorunitNo.>
When the [SELECT] button is pressed, the target indoor unit will start fan opera-
tion. If the unit is common or when running all units, all indoor units for the se-
lected refrigerant address will start fan operation.
4 (Fig. 6-7)
• When data collection from the indoor units is completed, the current settings
appears highlighted. Non-highlighted items indicate that no function settings
are made. Screen appearance varies depending on the “Unit No.” setting.
5 (Fig. 6-8)
• Use the [F1] or [F2] button to move the cursor to select the mode number, and
change the setting number with the [F3] or [F4] button.
6 (Fig. 6-9)
• When the settings are completed, press the [SELECT] button to send the
setting data from the remote controller to the indoor units.
• When the transmission is successfully completed, the screen will return to the
Function setting screen.
Settings menu
Cursor
Service menu:
Function setting
F1 F2 F3 F4
F1 F2 F3 F4
Service menu
Cursor
Main menu:
Test run
Input maintenance info.
settings
Check
Others
Function setting
Cursor Address
Monitor:
Ref. address
Unit No.
Grp./1/2/3/4/All
F1 F2 F3 F4
Fig.6-5Fig.6-4
Fig.6-6
F1 F2 F3 F4
Function setting
Cursor Cursor
Ref. address
Mode 1
Mode 2
Mode 3
Mode 4
Grp.
F1 F2 F3 F4
Function setting
Cursor Cursor
Request:
Ref. address
Mode 1
Mode 2
Mode 3
Mode 4
Grp.
Fig.6-7
Fig.6-8
F1 F2 F3 F4
Function setting
Ref. address
Sending data
Grp.
Fig.6-9
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Functiontable
Select unit number “Grp.”
Mode Settings Mode no. Setting no. Initial setting Setting
Power failure automatic recovery Not available 01 1
Available *1 2*2
Indoor temperature detecting Indoor unit operating average
02
1
Set by indoor unit’s remote controller 2
Remote controller’s internal sensor 3
LOSSNAY connectivity Not Supported
03
1
Supported (indoor unit is not equipped with outdoor-air intake) 2
Supported (indoor unit is equipped with outdoor-air intake) 3
Power voltage 240 V 04 1
220 V, 230 V 2
Auto operation mode Single set point (Available 14°C cooling setting *3) 06 1
Dual set point (Not available 14°C cooling setting *3) 2
Smart Defrost *3 Available 20 1
Not available 2
Select unit numbers 1 to 4 or “All”
Mode Settings Mode no. Setting no. Initial setting Setting
Filter sign 100 Hr
07
1
2500 Hr 2
No filter sign indicator 3
Fan speed Silent
08
1
Standard 2
High ceiling 3
Fan speed during the cooling
thermostat is OFF
Setting fan speed
27
1
Stop 2
Extra low 3
*1 When the power supply returns, the air conditioner will start 3 minutes later.
*2 Power failure automatic recovery initial setting depends on the connecting outdoor unit.
*3 It is available when the indoor unit is connected to any of the particular outdoor units.
6. Electricalwork
VG79Y436H01_01en.indd 12 05-May-21 15:13:30
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6. Electricalwork
6.3. Rotationsetting
You can set these functions by wired remote controller. (Maintenance monitor)
Rotation setting
Select :
Rotation
TempDifTrigger
− Content +
Backup only
+4°C
Cur.
F1 F2 F3 F4
Reset
4Set the rotation function.
• Select “Rotation” with the [F1] button.
• Select the switching period or “Backup only” with the [F2] or [F3] button.
■“Rotation” setup options
None, 1 day, 3 days, 5 days, 7 days, 14 days, 28 days, Backup only
5Set the support function.
• Select “TempDifTrigger” with the [F1] button.
• Select the difference between the suction temperature and the set temperature with the [F2] or [F3]
button.
1Select “Service” from the Main menu, and press the [SELECT] button.
2Select “Settings” with the [F1] or [F2] button, and press the [SELECT] button.
3Select “Rotation setting” with the [F1] or [F2] button, and press the [SELECT] button.
Rotation setting
Select :
Rotation
TempDifTrigger
− Content +
Backup only
+4°C
Cur.
F1 F2 F3 F4
Reset
Notes:
• When 1 to 28 days are selected from the setup options, the backup function is also enabled.
• When “Backup only” is selected, the rotation function will be disabled. The systems with refrigerant
addresses of 00 or 01 (00 system/ 01 system) will be operated as a main system while the 02 system
is the standby mode as backup.
6Press the [SELECT] button to update the setting.
■“TempDifTrigger” setup options
None, +4ºC, +6ºC, +8ºC
Notes:
• The support function is available only in the COOL mode. (Not available in the HEAT, DRY and AUTO
mode.)
• The support function is enabled when any option other than “None” is selected from the “Rotation”
setup options.
Reset method
• Press the [F4] button in step 4 or 5 to reset the operation time of the rotation function. Once it is reset, operation will start from the systems with
refrigerant addresses of 00 or 01.
Note: When the system with refrigerant addresse of 02 is in the backup operation, the 00 or 01 systems will be operated again.
F1 F2 F3 F4
Settings menu
Service menu:
Function setting
Rotation setting
Cursor
VG79Y436H01_01en.indd 13 05-May-21 15:13:30
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7. Testrun
7.1. Beforetestrun
► After completing installation and the wiring and piping of the indoor and outdoor
units, check for refrigerant leakage, looseness in the power supply or control
wiring, wrong polarity, and no disconnection of one phase in the supply.
► Use a 500-volt megohmmeter to check that the resistance between the power
supply terminals and ground is at least 1.0 MΩ.
► Do not carry out this test on the control wiring (low voltage circuit) terminals.
Warning:
Donotusetheairconditioneriftheinsulationresistanceislessthan1.0MΩ.
7.2. Testrun
7.2.1. Usingwiredremotecontroller
■ Make sure to read operation manual before test run. (Especially items to secure safety)
Step 1 Turn on the power.
● Remote controller: The system will go into startup mode, and the remote controller power lamp (green) and “Please Wait” will blink. While the lamp and message are
blinking, the remote controller cannot be operated. Wait until “Please Wait” is not displayed before operating the remote controller. After the power is turned on, “Please
Wait” will be displayed for approximately 3 minutes.
● Indoor controller board: LED 1 will be lit up, LED 2 will be lit up (if the address is 0) or off (if the address is not 0), and LED 3 will blink.
● Outdoor controller board: LED 1 (green) and LED 2 (red) will be lit up. (After the startup mode of the system finishes, LED 2 will be turned off.) If the outdoor controller
board uses a digital display, [- ] and [ -] will be displayed alternately every second.
If the operations do not function correctly after the procedures in step 2 and thereafter are performed, the following causes should be considered and eliminated if they
are found.
(The symptoms below occur during the test run mode. “Startup” in the table means the LED display written above.)
Symptoms in test run mode
Cause
Remote Controller Display OUTDOORBOARDLEDDisplay
< > indicates digital display.
Remote controller displays “Please Wait”, and
cannot be operated. After “startup” is displayed, only green lights up.
<00> • After power is turned on, “Please Wait” is displayed for 3
minutes during system startup. (Normal)
After power is turned on, “Please Wait” is
displayed for 3 minutes, then error code is dis-
played.
After “startup” is displayed, green (once) and red
(once) blink alternately. <F1> • Incorrect connection of outdoor terminal block (L, N and S1,
S2, S3.)
After “startup” is displayed, green (once) and red
(twice) blink alternately. <F3, F5, F9> • Outdoor unit’s protection devise connector is open.
No display appears even when remote control-
ler operation switch is turned on. (Operation
lamp does not light up.)
After “startup” is displayed, green (twice) and
red (once) blink alternately. <EA. Eb>
• Incorrect wiring between the indoor and outdoor unit (Polarity
is wrong for S1, S2, S3.)
• Remote controller transmission wire short.
After “startup” is displayed, only green lights up.
<00>
• There is no outdoor unit of address 0. (Address is other than
0.)
• Remote controller transmission wire open.
Display appears but soon disappears even
when remote controller is operated. After “startup” is displayed, only green lights up.
<00> • After canceling function selection, operation is not possible for
about 30 seconds. (Normal)
Step 2 Switch the remote controller to “Test run”.
1Select “Test run” from the Service menu, and press the [SELECT] button.
(Fig. 7-1)
2Select “Test run” from the Test run menu, and press the [SELECT] button.
(Fig. 7-2)
3The test run operation starts, and the Test run operation screen is displayed.
F1 F2 F3 F4
Test run
Input maintenance info.
Setting
Check
Others
Main menu:
Service menu
Cursor
Fig.7-1
F1 F2 F3 F4
Test run menu
Cursor
Service menu:
Test run
Drain pump test run
Fig.7-2
F1 F2 F3 F4
Cool
Pipe
Auto
Switch disp.
Mode Fan
RemainTest run
Fig.7-3 Fig.7-4
Step3 Performthetestrunandchecktheairowtemperatureandautovane.
1 Press the [F1] button to change the operation mode. (Fig. 7-3)
Cooling mode: Check that cool air blows from the unit.
Heating mode: Check that warm air blows from the unit.
2Press the [SELECT] button to display the Vane operation screen, and then
press the [F1] and [F2] buttons to check the auto vane. (Fig. 7-4)
Press the [RETURN] button to return to the Test run operation screen.
F1 F2 F3 F4
Remain
Vane
VG79Y436H01_01en.indd 14 05-May-21 15:13:30
15
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7. Testrun
Step4 Confirmtheoperationoftheoutdoorunitfan.
The speed of the outdoor unit fan is controlled in order to control the performance of the unit. Depending on the ambient air, the fan will rotate at a slow speed and will keep
rotating at that speed unless the performance is insu cient. Therefore, the outdoor wind may cause the fan to stop rotating or to rotate in the opposite direction, but this is
not a problem.
Step5 Stopthetestrun.
1 Press the [ON/OFF] button to stop the test run. (The Test run menu will appear.)
Note: If an error is displayed on the remote controller, see the table below.
LCD Description of malfunction LCD Description of malfunction LCD Description of malfunction
P1 Intake sensor error P9 Pipe sensor error (dual-wall pipe)
E0 – E5 Communication error between the
remote controller and the indoor unit
P2 Pipe sensor error (liquid pipe) PA Leakage error (refrigerant system)
P4 Drain oat switch connector disconnected
(CN4F)
Pb Indoor unit fan motor error
PL Refrigerant circuit abnormal
P5 Drain over ow protection operation FB Indoor controller board error
E6 – EF Communication error between the
indoor unit and the outdoor unit
P6 Freezing/overheating protection
operation
U*, F*
(* indicates an
alphanumeric
character
excluding FB.)
Outdoor unit malfunction
Refer to the wiring diagram for the
outdoor unit.
P8 Pipe temperature error
See the table below for the details of the LED display (LED 1, 2, and 3) on the indoor controller board.
LED 1 (microcomputer power supply) Indicates whether control power is supplied. Make sure that this LED is always lit.
LED 2 (remote controller power supply) Indicates whether power is supplied to the wired remote controller. The LED is lit only for the indoor unit that is con-
nected to the outdoor unit that has an address of 0.
LED 3 (indoor/outdoor unit communication) Indicates whether the indoor and outdoor units are communicating. Make sure that this LED is always blinking.
■ Testrun(Fig.7-5)
1. Press the button 1to stop the air conditioner.
• If the weekly timer is enabled ( is on), press the button 3to
disable it ( is off).
2. Press the button 2for 5 seconds.
• comes on and the unit enters the service mode.
3. Press the button 2.
• Bcomes on and the unit enters the test run mode.
4. Press the following buttons to start the test run.
: Switch the operation mode between cooling and heating and start the
test run.
: Switch the fan speed and start the test run.
: Switch the airflow direction and start the test run.
: Switch the louver and start the test run.
: Start the test run.
5. Stop the test run.
• Press the button 1to stop the test run.
• After 2 hours, the stop signal is transmitted.
Fig.7-5
Fig.7-6
1
A
B
2
3
5
B
1
A
4
2
3
■ Self-check(Fig.7-6)
1. Press the button 1to stop the air conditioner.
•If the weekly timer is enabled ( is on), press the button 3to
disable it ( is off).
2. Press the button 2for 5 seconds.
• Acomes on and the unit enters the self-check mode.
3. Press the button 5 to select the refrigerant address (M-NET address) Bof the
indoor unit for which you want to perform the self-check.
4. Press the button 4.
• If an error is detected, the check code is indicated by the number of beeps
from the indoor unit and the number of blinks of the OPERATION INDICA-
TOR lamp.
5. Press the button 1.
• A and the refrigerant address (M-NET address) Bgo off and the self-
check is completed.
7.2.2. Usingwirelessremotecontroller
VG79Y436H01_01en.indd 15 05-May-21 15:13:31
16
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7. Testrun
OPERATION
INDICATOR
lamp blinking
pattern
Beep Beep Beep Beep Beep Beep Beep
Off
Approx. 2.5 sec.
On
Approx. 3 sec.
On
0.5 sec.
On
0.5 sec.
On
0.5 sec.
On
0.5 sec.
Off
Approx. 2.5 sec.
On
Approx. 3 sec.
On
0.5 sec.
On
0.5 sec.
· · · Repeated
Number of blinks/beeps in pattern indicates the check
code in the following table (i.e., n=5 for “U2”)
Number of blinks/beeps in pattern indicates
the check code in the following table
nth
1st 2nd 3rd 1st 2nd
Self-check
starts
(Start signal
received)
Beeper sounds
[Output pattern B]
OPERATION
INDICATOR
lamp blinking
pattern
Beep Beep Beep Beep Beep Beep Beep
Off
Approx. 2.5 sec.
On
0.5 sec.
On
0.5 sec.
On
0.5 sec. On
0.5 sec.
Off
Approx. 2.5 sec.
On
0.5 sec.
On
0.5 sec.
· · · Repeated
Number of blinks/beeps in pattern indicates the check
code in the following table (i.e., n=5 for “P5”)
Number of blinks/beeps in pattern indicates
the check code in the following table
nth
1st 2nd 3rd 1st 2nd
Self-check
starts
(Start signal
received)
Beeper sounds
• Refer to the following tables for details on the check codes. (Wireless remote controller)
[Output pattern A]
7.3. Self-check
■ Refer to the installation manual that comes with each remote controller for details.
[Output pattern A] Errors detected by indoor unit
Wireless remote controller Wired remote
controller
Symptom Remark
Beeper sounds/OPERATION
INDICATOR lamp blinks
(Number of times)
Check code
1 P1 Intake sensor error
2P2 Pipe (TH2) sensor error
P9 Pipe (TH5) sensor error
3 E6, E7 Indoor/outdoor unit communication error
4 P4 Drain sensor error/Float switch connector open
5P5 Drain pump error
PA Forced compressor error
6 P6 Freezing/Overheating protection operation
7 EE Communication error between indoor and outdoor units
8 P8 Pipe temperature error
9 E4 Remote controller signal receiving error
10 — —
11 Pb Indoor unit fan motor error
12 Fb Indoor unit control system error (memory error, etc.)
14 PL Refrigerant circuit abnormal
No sound E0, E3 Remote controller transmission error
No sound E1, E2 Remote controller control board error
No sound – – – – No corresponding
VG79Y436H01_01en.indd 16 05-May-21 15:13:31
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7. Testrun
[Output pattern B] Errors detected by unit other than indoor unit (outdoor unit, etc.)
Wireless remote controller Wired remote
controller
Symptom Remark
Beeper sounds/OPERATION
INDICATOR lamp blinks
(Number of times)
Check code
1 E9 Indoor/outdoor unit communication error (Transmitting error) (Outdoor unit)
For details, check the LED
display of the outdoor controller
board.
2 UP Compressor overcurrent interruption
3 U3, U4 Open/short of outdoor unit thermistors
4 UF Compressor overcurrent interruption (When compressor locked)
5 U2 Abnormal high discharging temperature/49C worked/insucient refrigerant
6 U1, Ud Abnormal high pressure (63H worked)/Overheating protection operation
7 U5 Abnormal temperature of heat sink
8 U8 Outdoor unit fan protection stop
9 U6 Compressor overcurrent interruption/Abnormal of power module
10 U7 Abnormality of super heat due to low discharge temperature
11 U9, UH Abnormality such as overvoltage or voltage shortage and abnormal synchro-
nous signal to main circuit/Current sensor error
12 — —
13 — —
14 Others Other errors (Refer to the technical manual for the outdoor unit.)
*1 If the beeper does not sound again after the initial 2 beeps to confirm the self-check start signal was received and the OPERATION INDICATOR lamp does not come
on, there are no error records.
*2 If the beeper sounds 3 times continuously “beep, beep, beep (0.4 + 0.4 + 0.4 sec.)” after the initial 2 beeps to confirm the self-check start signal was received, the
specified refrigerant address is incorrect.
• On wireless remote controller
The continuous buzzer sounds from receiving section of indoor unit.
Blink of operation lamp
• On wired remote controller
Check code displayed in the LCD.
• If the unit cannot be operated properly after test run, refer to the following table to find the cause.
Symptom Cause
Wired remote controller LED 1, 2 (PCB in outdoor unit)
Please Wait For about 3 minutes
after power-on
After LED 1, 2 are lighted, LED 2 is turned
o, then only LED 1 is lighted. (Correct
operation)
•For about 3 minutes after power-on, operation of the remote
controller is not possible due to system start-up. (Correct
operation)
Please Wait → Error code
Subsequent to
about 3 minutes
after power-on
Only LED 1 is lighted. →LED 1, 2 blink.
•Connector for the outdoor unit’s protection device is not con-
nected.
Reverse or open phase wiring for the outdoor unit’s power
terminal block (L1, L2, L3)
Display messages do not appear
even when operation switch is
turned ON (operation lamp does
not light up).
Only LED 1 is lighted. →LED 1 blinks
twice, LED 2 blinks once.
•Incorrect wiring between indoor and outdoor units (incorrect
polarity of S1, S2, S3)
•Remote controller wire short
On the wireless remote controller with condition above, following phenomena take place.
• No signals from the remote controller are accepted.
• Operation lamp is blinking.
• The buzzer makes a short ping sound.
Note:
Operationisnotpossibleforabout30secondsaftercancellationoffunctionselection.(Correctoperation)
For description of each LED (LED 1, 2, 3) provided on the indoor controller, refer to page 15.
VG79Y436H01_01en.indd 17 05-May-21 15:13:31
18
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8. Easymaintenancefunction
Maintenance data, such as the indoor/outdoor unit’s heat exchanger temperature and compressor operation current can be displayed with “Smooth maintenance”.
* Thiscannotbeexecutedduringtestoperation.
* Dependingonthecombinationwiththeoutdoorunit,thismaynotbesupportedbysomemodels.
F1 F2 F3 F4
Check menu
Cursor
Service menu:
Error history
Diagnosis
Smooth maintenance
Request code
Smooth maintenance
Begin:
Smooth maintenance
Exit:
Ref.address
Stable mode
Cursor
Ref.address
Stable mode
Stabilization→Collecting
Cool / Heat/Normal
Address
Cool / Heat/Normal
Smooth maintenance
Return:
Smooth maintenance
Return:
Smooth maintenance
Return:
Page
Page
Page
COMP. current
COMP. run time
COMP. On / Off
COMP. frequency
A
Hz
Hr
times
Hr
Ref. address
Cool
Ref.address
Cool
Ref.address
Cool
Sub cool
OU TH4 temp.
OU TH6 temp.
OU TH7 temp.
IU air temp.
IU HEX temp.
IU filter time
1
2
3
• Select “Service” from the Main menu, and press the [SELECT] button.
• Select “Check” with the [F1] or [F2] button, and press the [SELECT] button.
• Select “Smooth maintenance” with the [F1] or [F2] button, and press the
[SELECT] button.
Select each item.
• Select the item to be changed with the [F1] or [F2] button.
• Select the required setting with the [F3] or [F4] button.
“Ref. address” setting ………. “0” - “15”
“Stable mode” setting……….. “Cool” / “Heat” / “Normal”
• Press the [SELECT] button, fixed operation will start.
* Stable mode will take approx. 20 minutes.
The operation data will appear.
The Compressor-Accumulated operating (COMP. run) time is 10-hour unit, and the
Compressor-Number of operation times (COMP. On/O) is a 100-time unit (fractions
discarded)
Navigatingthroughthescreens
• To go back to the Service menu................[MENU] button
• To return to the previous screen .......... [RETURN] button
VG79Y436H01_01en.indd 18 05-May-21 15:13:31
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