Carrier 40qnc018243 Manual

							  
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Table5--40QNC,QNQFanCoilElectricalData 
UNITSIZE V-PH-Hz VOLTAGERANGE* 
MinMax FLA FAN 
MotorPower 
(Watts) MCA MINWIRE 
SIZE  POWER 
MOCP 
15 
15 
15 
15 
15 
15 
15  40QNC01824208/230-1-601872530.38640.4814 
40QNC030208/230-1-601872530.38740.4814 
40QNC036208/230-1-601872530.44740.5514 
40QNQ018208/230-1-601872530.38640.4814 
40QNQ024208/230-1-601872530.38640.4814 
40ONO030208/230-1-601872530.38740.4814 
40QNQ036208/230-1-601872530.44740.5514 
LEGEND 
FLA--FullLoadAmps 
MOA--MinimumCircuitAmpsperNECSection430-24 
MOCP--MaximumOvercurrentProtection 
NEC--NationalElectricalCode 
RLA--RatedLoadAmps(Compressor) 
*Permissiblelimitsofthevoltagerangeatwhichunitwilloperate 
satisfactorily. NOTES: 
1.IncompliancewithNECrequirementsformultimotorandcombi- 
nationloadequipment(refertoNECArticles430and440),the 
overcurrentprotectivedevicefortheunitshallbefuseor 
equippedwithabreaker. 
2.MotorRLAvaluesareestablishedinaccordancewithUL(Under- 
writersLaboratories)Standard465. 
START-UP 
PreliminaryChecks 
1.Checkthatallinternalwiringconnectionsaretightand 
thatallban-iers,covers,andpanelsareinplace. 
2.Fieldelectricalpowersourcemustameewithunitname- 
platerating. 
3.Allservicevanesmustbeopen. 
4.Crankcaseheatermustbetightoncompressorcrmlkcase 
(ifequipped). 
LeakTest--Fieldpipingandtancoilmustbeleaktested 
bypressuremetllod.UseR-410Aatapproxilnately25psig 
backedupwithaninertgastoatotalpressurenottoexceed 
245psig. 
NOTE:LeakdetectorsshouldbedesiNledtodetectHFC 
(hydrottuorocarbon)refrigerant. 
EvacuateandDehydrate--Fieldpipingandfancoil 
mustbeevacuatedanddehydratedt\_ltowinggoodretiigera- 
tionpractices. 
StartUnitwithOperatingTest--Turnpoweronto 
theunit.Insertbatteriesinrelnotecontrol.PresstheAand 
the_buttonsontherelnotecontroltbr5seconds.The 
relnotecontrolwillbeclearedandthetimesemnentwiltdis- 
playtheSrc1servicetestmode. 
Pressthe=_buttontotranslnittheservicetestsiNmltothe 
unit.Afterthetesthascompletedpressthe(!)buttontoleave 
thetestmenu. 
NOTE:When30secoMshaveelapsedandnobuttonshave 
beenpressed,therelnotecontrolwillautomaticallyexitthetest 
menuandresumeitsnorlnaloperation. ConfiguringTwoIndoorUnitRemoteCon- 
trois--Ittwoindoorunitsarebeinginstalledinthesame 
room,workingindependently,tworelnotecontrolsneedtobe 
configuredforproperoperation. 
UNITCONFIGURATION6Turntheunitoffbypressing 
the_.PressandholdtheN_and_buttonsofthere- 
motecontrolformorethan5seconds.Thedisplaywillbe 
clearedandthetimesemnentswiltdisplaythefirstconfimlra- 
tionitem(rAdrrelnoteaddress)andthetemperaturesemnents 
willdisplaythedefaultvalueofthisconfigurationitem 
(Abcontrolofbothindoorunits).Press_andVto 
changethedefaultvaluetothenewvalueof(a)or(b).Pressthe 
L_buttontotransmitthenewconfigurationtotheunit.Press 
the(!)buttontoleavetheconfigurationmenu. 
REMOTECONTROLCONFIGURATION6Turntheunit 
offbypressingthe(1)button.PressaaldholdtheVand 
_buttonsformorethan5seconds.Thedisplaywillbe 
clearedandthetimesegnnentswilldisplaythefirstconfigura- 
tionitem(CHrelnoteaddress)andthetemperaturesemnents 
wiltdisplaythedefaultvalueofthisconfigurationitem 
(Abcontrolofbothindoorunits).PressAandVto 
&angethedefaultvaluetothenewvalueof(a)or(b).Pressthe 
_buttontotransmitthenewconfi_rationtotheunit. 
Pressthe0!)buttontoleavetheconfigurationmenu. 
NOTE:When30secondshaveelapsedandnobuttonshave 
beenpressed,theremotecontrolwillautomaticallyexitthe 
configurationmenuandres_ulneitsnorlnaloperation. 
13  
						

							  
SERVICE 
Betbrepertbnningrecomlnendedmaintenance,besure 
unitmainpowerswitchisturnedoffFailuretodosomay 
resultinelectricalshockorinjurytbnnrotatingfanblade. 
PumpdownProcedure--Thesystemmaybepmnped 
downinordertomakerepairsonthelowsidewithoutlosing 
completeretiigerantcharge. 
1.Attachpressuregagetosuctionservicevalvegageport. 
2.Frontseatthemixedphaselinevalve. 
Theunitcoilsholdonlythefactory-desiNlatedamountof 
refrigerant.Additionalrefrigerantmaycauseunitsto 
relievepressuretbaoughthecompressorinternalpressure 
reliefvalve(indicatedbyasuddenriseofsuctionpressure) 
beforesuctionpressurereaches20psig.Ifthisoccurs,shut 
offunitimmediatelythenfiontseatthesuctionvalveand 
removeandrecoverexcessretiigerantfotbwingaccepted 
practices.Equipmentdamagemayresult. 
3.Startunitandrununtilsuctionpressurereaches5psig. 
4.Shutunitoffandfiontseatsuctionvalve. 
5.Depressurizelowsideofunitandrecoverretiigerant 
followingacceptedpractices. 
FilterDrier--Wheneverthefilterdrierisexposedtotheat- 
ruosphereitmustbereplaced.Onlyusefactoryspecifiedliquid- 
linefilterdrierswithratedworkingpressureofatleast600psig 
or1Ylore. NOTE:Donotinstallasuction-linefilterdrierinthemixed 
phaseline. 
RefrigerantCharging 
Topreventpersonalinjury,wearsafetyglassesandgloves 
whenhandlingreti-igerant.Donotoverchargesystemd 
thiscancausecompressorflooding. 
NOTE:Donotventordepressurizeunitretiigeranttoatmo- 
sphere.Relnoveandrecoverrefiigerantfollowingaccepted 
practices. 
TROUBLESHOOTING 
SeeTables6and7fortroubleshootingintbnnation. 
FaultCode--Onceafailureoccurswiththeindoorunitin 
operation,thegreenLEDontheindoorunitflashesatintervals 
of0.5seconds.Thefauhcodeisdeducedfiolnthenumberof 
timesthe_eenLEDflashes,blockingunitoperation.Between 
oneflashcycleandthenextone,apauseof3secoMselapses. 
Table6--GreenLED(IndoorUnitFault) 
CODEDESCRIPTION 
3RoomAirSensorFault 
4IndoorUnitCoilSensorFault 
14OutdoorUnitAirSensorFault 
14  
						

							  
Table7--Troubleshooting 
PROBLEM 
CompressorandFanoftheOutdoor 
UnitWillNotStart 
CompressorWillNotStart,But 
OutdoorFanisOperating 
CompressorStopsDueto 
Overtemperature 
CompressorRunsContinuously POSSIBLECAUSE 
Unitnotenergized 
MainswitchissettoOFF 
Mainswitchfusesareblown 
Compressorcyclingprotectionison 
Mainpowervoltageistoolow 
Electricalconnectionsaretoolooseorare 
wrong 
Electricalconnectionsofcompressorareloose 
orwrong 
Compressorburntout;seizedorprotection 
deviceon 
Wrongrefrigerantchargeinunit(excessiveor 
low)orairorothernoncondensablegassesin 
thecircuit 
Mainvoltageistoohighortoolow 
Condensercoilobstructed 
Outdoorfanoff 
Wrongindoorunitthermistors 
Refrigerantcircuitclogged 
Reversingvalvefaultyonheatpumpmodels 
Expansiondevicecloggedorcoveredwithice 
Unitselectedistoosmallforapplication 
requirements 
Indoortemperaturesettingtoolowortoohigh 
Outdoorunitfanfaulty 
Airorothernoncondensablegassesinthe 
circuit 
Obstructionsatairintakeordirtyindoorunit 
filters 
Outdoorfanisstopped SOLUTION 
Checkthemainpowerconnection. 
CheckandputittoONposition. 
Replacefuses. 
Waitfor3minutes. 
Checkandsettothecorrectvoltage. 
Checkandtightenorcorrectconnections. 
Checkandtightenorrepaircompressor. 
Checkforthecauseandreplacecompressorif 
necessary. 
Drainrefrigerant,evacuateandrecharge. 
CAUTION:Donotventrefrigeranttotheatmosphere; 
userefrigerantrecoveryequipment. 
Checkvoltagesettingandadjustifnecessary. 
Removeobstruction. 
Checkcauseandresumeoperationorrepair. 
Replacethermistors. 
Checkandremoveobstructions. 
Replacereversingvalve. 
Drainrefrigerant,evacuateandrecharge. 
CAUTION:Donotventrefrigeranttotheatmosphere; 
userefrigerantrecoveryequipment. 
Contactaqualifiedservicetechnicianforasystem 
evaluation. 
Checktemperaturesetting. 
Replaceoutdoorfan. 
Drainrefrigerant,evacuateandrecharge. 
CAUTION:Donotventrefrigeranttotheatmosphere; 
userefrigerantrecoveryequipment. 
Removeobstructionand/orcleanfilter. 
FrequentIce-Build-UponOutdoorCheckcauseandrepair. 
Coil 
DischargePressureTooHigh Outdoorcoildirtyorobstructed 
Condenserfanfaulty 
Indoortemperaturesettingtoolowortoohigh 
Airorothernoncondensablegassesinthe 
circuit 
Indoortemperaturesettingtoohighortoolow 
Outdoorcoildirtyorobstructed 
Indoorunitairfilterdirty 
Indoortemperaturesettingtoohighortoolow 
Reversingvalvefaultyorinternalleak 
Indoortemperaturesettingtoohighortoolow 
Evaporatorcoilcoveredwithice 
Expansiondeviceorsuctionlineclogged 
Outdoorfandoesnotstopduringdefrost 
_eriods 
Electricalconnectionloose 
Fanmotorburnout 
Fanbearingseized 
Expansiondevicecloggedorcoveredwithice  DischargePressureTooLow 
SuctionPressureTooHigh 
SuctionPressureTooLow 
OutdoorFanCyclingDueto 
Over-TemperatureProtection Cleanorremoveobstructions. 
Replacecondenserfan. 
Checktemperaturesetting. 
Drainrefrigerant,evacuateandrecharge. 
CAUTION:Donotventrefrigeranttotheatmosphere; 
userefrigerantrecoveryequipment. 
Checktemperaturesetting. 
Cleanorremoveobstructions. 
Cleanfilter. 
Checktemperaturesetting. 
Replacereversingvalve. 
Checktemperaturesetting. 
Aircirculationontheevaporatornotsufficient;check 
andrepair. 
Checkandrepair. 
Checkelectricalparts. 
Checkconnections. 
Replace. 
Checkandrepair. 
Drainrefrigerant,evacuateandreplace. 
CAUTION:Donotventrefrigeranttotheatmosphere; 
userefrigerantrecoveryequipment. 
]5  
						

							  
Copyright2006CarrierCorporation 
Manufacturerreservestherighttodiscontinue,orchangeatanytime,specificationsordesignswithoutnoticeandwithoutincurringobligations. 
CatalogNo.02-40QN0001-SIPrintedinU.S.A.Form40QN-8SIPg163-06Replaces:New