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User Manual - Page 7

For MXZ-3E54VAD.

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En-6
4-4. LOCKING THE OPERATION MODE OF THE AIR CONDITIONER (COOL, DRY, HEAT)
4-5. LOWERING THE OPERATION NOISE OF THE OUTDOOR UNIT
• Descriptionofthefunction:
Withthisfunction,oncetheoperationmodeislockedtoeitherCOOL/DRYmode
orHEATmode,theairconditioneroperatesinthatmodeonly.
* Changingthesettingisrequiredtoactivatethisfunction.Pleaseexplainabout
thisfunctiontoyourcustomersandaskthemwhethertheywanttouseit.
[How to lock the operation mode]
1)Besure toturn offthe mainpower forthe airconditioner beforemaking the
setting.
2)Setthe“3”ofSW1ontheoutdoorcontrollerboardtoONtoenablethisfunction.
3)Tolockthe operationmodeinCOOL/DRYmode,setthe “4”ofSW1onthe
outdoorcontrollerboardtoOFF.TolocktheoperationinHEATmode,setthe
sameswitchtoON.
4)Turnonthemainpowerfortheairconditioner.
• Descriptionofthefunction:
Withthisfunction,theoperatingnoiseoftheoutdoorunitcanbeloweredbyreducingtheoperationload,forexample,duringnighttimeinCOOLmode.
However,pleasenotethatthecoolingandheatingcapacitymaylowerifthisfunctionisactivated.
* Changingthesettingisrequiredtoactivatethisfunction.Pleaseexplainaboutthisfunctiontoyourcustomersandaskthemwhethertheywanttouseit.
Lowertheoperatingnoise
[How to lower the operating noise]
1)Besuretoturnoffthemainpowerfortheairconditionerbeforemakingthesetting.
2)Setthe“5”ofSW1ontheoutdoorcontrollerboardtoONtoenablethisfunction.
3)Turnonthemainpowerfortheairconditioner.
4-6. TEST RUN
• Testrunsoftheindoorunitsshouldbeperformedindividually.Seetheinstallationmanualcomingwiththeindoorunit,andmakesurealltheunitsoperate
properly.
• Ifthetestrunwithalltheunitsisperformedatonce,possibleerroneousconnectionsoftherefrigerantpipesandtheindoor/outdoorunitconnectingwires
cannotbedetected.Thus,besuretoperformthetestrunonebyone.
About the restart protective mechanism
Oncethecompressorstops,therestartpreventivedeviceoperatessothecompressorwillnotoperatefor3minutestoprotecttheairconditioner.
Wiring/piping correction function
Thisunithasawiring/pipingcorrectionfunctionwhichcorrectswiringandpipingcombination.Whenthereispossibilityofincorrectwiringandpipingcombi-
nation,andconrmingthecombinationisdifcult,usethisfunctiontodetectandcorrectthecombinationbyfollowingtheproceduresbelow.
Makesurethatthefollowingisdone.
• Powerissuppliedtotheunit.
• Stopvalvesareopen.
Note:
Duringdetection,theoperationoftheindoorunitiscontrolledbytheoutdoorunit.Duringdetection,theindoorunitautomaticallystopsoperation.Thisisnot
amalfunction.
Whenrelocatingordisposingoftheairconditioner,pumpdownthesystemfollowingtheprocedurebelowsothatnorefrigerantisreleasedintotheatmosphere.
1)Turnoffthebreaker.
2)Connectthegaugemanifoldvalvetotheserviceportofthestopvalveonthegaspipesideoftheoutdoorunit.
3)Fullyclosethestopvalveontheliquidpipesideoftheoutdoorunit.
4)Turnonthebreaker.
5)StarttheemergencyCOOLoperationonalltheindoorunits.
6)Whenthepressuregaugeshows0.05to0MPa[Gauge](approx.0.5to0kgf/cm
2
),fullyclosethestopvalveonthegaspipesideoftheoutdoorunitand
stoptheoperation.(Refertotheindoorunitinstallationmanualaboutthemethodforstoppingtheoperation.)
*Iftoomuchrefrigeranthasbeenaddedtotheairconditionersystem,thepressuremaynotdropto0.05MPa[Gauge](approx.0.5kgf/cm
2
),ortheprotection
functionmayoperateduetothepressureincreaseinthehigh-pressurerefrigerantcircuit.Ifthisoccurs,usearefrigerantcollectingdevicetocollectallof
therefrigerantinthesystem,andthenrechargethesystemwiththecorrectamountofrefrigerantaftertheindoorandoutdoorunitshavebeenrelocated.
7)Turnoffthebreaker.Removethepressuregaugeandtherefrigerantpiping.
4-7. EXPLANATION TO THE USER
• UsingtheOPERATINGINSTRUCTIONS,explaintotheuserhowtousetheairconditioner(howtousetheremotecontroller,howtoremovetheairlters,
howtoremoveorputtheremotecontrollerintheremotecontrollerholder,howtoclean,precautionsforoperation,etc.).
• RecommendtheusertoreadtheOPERATINGINSTRUCTIONScarefully.
Procedure
Pressthepiping/wiringcorrectionswitch(SW871)1minuteormoreafterturningonthe
powersupply.
• Correctioncompletesin10to15minutes.Whenthecorrectioniscompleted,itsresult
isshownbyLEDindication.Detailsaredescribedinthefollowingtable.
• Tocancelthisfunctionduringitsoperation,pressthepiping/wiringcorrectionswitch
(SW871)again.
• Whenthecorrectioncompletedwithouterror,donotpressthepiping/wiringcorrection
switch(SW871)again.
Whentheresultis“Notcompleted”,pressthepiping/wiringcorrectionswitch(SW871)again
tocancelthisfunction.Then,conrmthewiringandpipingcombinationinaconventional
mannerbyoperatingtheindoorunitsonebyone.
• Theoperationisdonewhilethepowerissupplied.Makesurenottocontactpartsother
thantheswitch,includingtheP.C.board.Thismaycauseelectricshockorburnbyhot
partsandlivepartsaroundtheswitch.ContactingthelivepartsmaycauseP.C.board
damage.
• TopreventelectroniccontrolP.C.boarddamage,makesuretoperformstaticelimination
beforeoperatingthisfunction.
• Thisfunctiondoesnotoperatewhentheoutsidetemperatureis0°Corbelow.
LED indication during detection:
LED1
(Red)
LED2
(Yellow)
LED3
(Green)
Lighted Lighted Once
Result of piping/wiring correction function
LED1
(Red)
LED2
(Yellow)
LED3
(Green)
Result
Lighted Notlighted Lighted
Completed
(Problemcorrectedor
normal)
Once Once Once
Notcompleted
(Detectionfailed)
Otherindications
Referto“SAFETYPRE-
CAUTIONSWHENLED
BLINKS”locatedbehind
thetoppanel.
When pumping down the refrigerant, stop the compressor before disconnecting the refrigerant pipes.
The compressor may burst and cause injury if any foreign substance, such as air, enters the pipes.
WARNING
5. PUMPING DOWN
HEAT
COOL/DRY
LED
SW1
SW871
SW2
SW1
ON
1 2 3 4 5 6
SW1
ON
1 2 3 4 5 6
BN79A289H01_en.indd 6 2016/04/20 14:53:02
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