Samsung WA5471 Series Manual

1
WASHING MACHINE
Technical Information
Code No. : DC68-03051A-02_EN
• Duetopossibilityofpersonalinjuryorpropertydamage,alwayscontactanauthorized
technicianforservicingorrepairofthisunit.
• RefertoServiceManualfordetailedinstallation,operating,testing,troubleshooting,and
disassemblyinstructions.
Models : WA5471*
WA5451*
AllsafetyinformationmustbefollowedasprovidedinServiceManual.
CAUTION
Toavoidriskofelectricalshock,personalinjuryordeath;disconnectpowertowasher
beforeservicing,unlesstestingrequirespower.
WARNING
WA5471ABP_03051A-02(Technical information).indd 1 2012-02-13 �� 9:36:22

ALIGNMENT AND ADJUSTMENTS
2
GENERAL ERROR FUNCTION
NO
Error Code
(Diagnostic Code
Error Image)
Description Corrective Action
1nd Thewaterlevelfailstodropbelowthe
ResetWaterLevelwithin30minutes.
Goto“WillNotDrain”Troubleshooting
Section.
2LO DoorfailstoUnlockAfter7attempts. Goto“WillNotUnlock”
TroubleshootingSection.
3nF
WhenthellingContinuesformore
than60minutesorthereisnochange
ofwaterlevelfor6minutes.
Goto“NoWaterFill”Troubleshooting
Section.
4FL Doorfailstolockafter7attempts. Goto“WillNotLock”Troubleshooting
Section.
5LE
AwaterlevellowerthantheReset
waterlevelisdetectedfor5seconds
duringtheWash/Rinsecycle.
Goto“NoWaterFill”Troubleshooting
Section.
6 1E
WaterLevelSensorTrouble.(When
theinputsignalfromthewaterlevel
sensorisoutofrange,theunitwill
sendoutbeepingsoundsandhalts
thecycle.)
Goto“NoWaterFill”
TroubleshootingSection
7 OE
Afaultisdetectedinthewaterlevel
sensor.Data(frequency)showsthe
waterlevelisatorabovetheoverow
waterlevel.(Whenthiscondition
isdetected,themachinewill
automaticallystartsdrainingwater
untilthewaterlevelfallsbelowthe
resetwaterlevel)
Firstchecktoseethatallofwater
valvesarenotstuck.Ifwatervalves
areOK,checkwaterlevel.
8dc Unbalanceorcabinetbumpis
detectedduringnalspin
Goto“WetClothes”Troubleshooting
Section.
9 E2
JammedKey.(Whenkeyinputsignals
arecomingoutformorethan30
seconds,itisregardedasajam.)
Checkallofkeys.IfAkeyissensed
tobepressed,allkeyswilldonot
respond.
10 ds Doorisdetectedasopenwhileitis
tryingtolockthedoor.
Goto“QuickTestMode”andthendo
DoorLock/UnlockTest
Toavoidriskofelectricalshock,personalinjuryordeath;disconnectpowertowasher
beforeservicing,unlesstestingrequirespower.
WARNING
WA5471ABP_03051A-02(Technical information).indd 2 2012-02-13 �� 9:36:22

ALIGNMENT AND ADJUSTMENTS
3
NO
Error Code
(Diagnostic Code
Error Image)
Description Corrective Action
11 TE1
Thisoccurswhenthewater
temperaturesensorfaultisdetected
continuouslyfor5seconds.
Goto“BoardInputTest”andcheck
WaterTemperature.Checkloose
orpinchedwires.ReplacePCBor
thermistor.
12 3E
MICOMisattemptingtodrivethemotor
butisnotgettinganyresponsesignals
fromthehallsensor.Visualcheckshows
motorisnotrunning.(Locked,Defective
HallSensororOverload)
Evaluatewireharnessforlooseor
unhookedconnections.Goto“Quick
TestMode”andtestMotor.
13 HE HeaterRelayFailure(NoHeaterRelay
CheckSignal) ReplacePCB
14 nF1 Thehot/coldwaterhoseconnectionis
notcorrect.
Pleaseconnectthehot/coldwater
hoseconnectioncorrectly.
15 SUd
Sudsisdetectedduringthewashing
session.(“SUdS”isnotanerror.When
itnisheswashing,EndandtheSUd
codewillblinkinturn.)
Guideausertoreduceamountof
detergentusage.
16 AE
CommunicationerrorbetweenSUB
PBAandMAINPBA
CheckMainPBA,SUBPBA&Wire-
harness.ReplacePCB
17 PE
(ClutchMotorError)
Thiserroroccurswhenthepositionof
theclutchisnotdetected.
-Ifthepositiondetectionsignalisnot
received15secondsaftertheclutch
motorstarts,thespindrumisshaken
leftandrightandthenthemotoris
restarted.
Ifthemotorpositionsignalisnot
receivedevenafter3reattempts,aPE
erroroccurs.
1.Checktheclutchmotor.
2.Checktheassemblystatusofthe
clutchmotor.
3.Checkthewireconnectorterminals.
18
PE1
(clutchhallsensor
error)
Afterthecompletionoftheclutch
positiondetection,andtheclutch
hallsignalisinvalid,thespindrum
isshakenleftandrightandthenthe
clutchhallsignalisevaluatedagain.
This,iftheclutchhallsignalisstill
invalid,theclutchpositionswitching
statusischeckedandthenthe
operationisrestarted.
(Ifthe15reattemptsfail,thiserror
occurs.)
1.Checktheclutchhallsensor.
2.Checkthewireconnectorterminals.
3.Checktheclutchswitchingstatus.
-Checkthecouplingassemblyand
disassemblystatus.
19 8E
IftheoutputfromtheMEMSsensor
isover4.5Vorunder0.5Vandit
continuesfor5seconds,thiserror
occurs.
1.ChecktheMEMSsensorandPBA.
2.Checkthewireconnectorterminals
Toavoidriskofelectricalshock,personalinjuryordeath;disconnectpowertowasher
beforeservicing,unlesstestingrequirespower.
WARNING
WA5471ABP_03051A-02(Technical information).indd 3 2012-02-13 �� 9:36:22

ALIGNMENT AND ADJUSTMENTS
4
TEST MODE
Test Mode:
EachTestModefortheORCAisasfollowsinthe
comingpages.Thetestmodesindicatedbythe
redarrowsaremodesunabletogetanaccess
oncethewashingcyclehasstartedduetosafety
resons.
Quick Test Mode
Denition of Quick Test Mode:
- CheckoperationofallLED’s(VerifyfaultyLED).
- Checkmodelandsoftwareversion.
- Checkdierentoperatingmodes(e.g.watervalve,motor,door,drainpump,etc.).
How to Enter:
- Plugintheunit.
- Pressspinkey,soillevelkeyandPowerKeyatthesameTime.
Toavoidriskofelectricalshock,personalinjuryordeath;disconnectpowertowasher
beforeservicing,unlesstestingrequirespower.
WARNING
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ALIGNMENT AND ADJUSTMENTS
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Quick Test Mode:
1. AllLED’slightupanditsendsoutBeepSoundwhenit
entersintotheQuickTestMode.(Including7-Segment)
2. DisplayssoftwareversionforasecandClearEEprom.
3. Whentheversionisdisplayed,turntheJog-Dialsothat
theversiondisappears.Pressthefollowingkeystotestthe
variouscomponents.
-TempKey:WaterValveTest
-Signal:DoorLock/UnlockTest
-SoilKey:WaterHeaterTest
-Spin:Drain/circulationpumptest
EEPROM Clear Check
Denition of EEPROM Clear Mode:
- EEPROMinitialization.
- Allcourse/optionsettingsaretoberesettodefault
valuesafterEEPROMinitialization.
- WhenServicearisesanditneedsPCBreplacement,
EEPROMshouldbereset.
How to Enter:
- Theunitneedstobeon.
- PressDelayStartKey,andPowerKeyatthesame
time.
Toavoidriskofelectricalshock,personalinjuryordeath;disconnectpowertowasher
beforeservicing,unlesstestingrequirespower.
WARNING
WA5471ABP_03051A-02(Technical information).indd 5 2012-02-13 �� 9:36:23

ALIGNMENT AND ADJUSTMENTS
6
Continuous Run Mode
Denition of Continuous Run Mode:
- WillcontinuouslyrepeatthecurrentcycleuntiltheContinuousRunModeiscancelled.
How to Enter:
- PressDelayStart+SoilLevelKeytogetherfor7sec.
Continuous Run Mode:
1. Press
DelayStart+SoilLevel Keyfor7secduringPowerOnState(NormalUserMode).
2.
OnceinContinuousRunMode,Thesevensegmentswillnolongerdisplay“0000”andwillalternate
betweendisplayingthenumberofcyclesofthecompletedcourseandtheremainingtimeofthecourse.
3. TheContinuousRunModewillrepeatthepreviouscycleuntilcontinuousrunmodeiscancelled.
4.
DuringContinuousRunMode,pressDelayStart+SoilLevelKeyfor7sectoreturntonormal
usermode.Thesevensegmentswillnolongerdisplaythenumberofcyclesandwilldisplaythe
maintenancetimeonly.
5. IfyouexitServiceModeafterenteringitfromContinuousMode,thewashingmachinereturns
toContinuousMode.
6. IfpowerislostinContinuousRunMode(thatis,whenthepowerplugisdisconnectedorthe
Powerkeyispressedturningthewashingmachineo),themodeisreleasedwhenthewashing
machineisturnedonagain.
Service Mode
Denition of Service Mode:
- ServiceModeenablesservicetechnicianstoverifytheoperationofthewashingmachineand
dotroubleshooting.
- ServiceModecanbeenteredduringallwashingcyclewithoutinterruptingthecycleexcept
someoftestmodes.
- VarioustestscanbedonewithServiceMode.So,troubleshootingcanbedonebasedonthe
resultingdiagnosticcodes.
How to Enter:
- ToentertheServiceMode,presstheSignalandExtraRinseKeysfor3secondsoruntiltheunit
sendsoutbeepingsounds.
Toavoidriskofelectricalshock,personalinjuryordeath;disconnectpowertowasher
beforeservicing,unlesstestingrequirespower.
WARNING
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ALIGNMENT AND ADJUSTMENTS
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Service Mode
Service Mode:
1.ThewashermustbeontogointotheServiceMode.
2.Themotorspeedwillbedisplayedwhenstarted(Itdisplays0whenthemotordoesnotspin).
3.Thepresentstateofthemachinewillnotbechanged.
(i.e.,thecurrentcycleinprogresswillnotbeinterruptedandonlythedisplaywillchange)
4. ToexitServiceMode,pressSignalandExtraRinseKeysfor3secondagain,orPowerKey.Ifnokey
isoperatedduringServiceModefor5minutes,themachinewillreturntonormalusermode.
Quick Spin Test Mode
Denition of Quick Spin Test Mode:
- QuickSpinTestModeistodoSpinCheck.(HighRPM)
How to Enter:
- DuringServiceMode,presstheDelayStartandTemp.Keysfor3secondstoenterQuickSpin
TestMode.
- Cannotenteroncethewashingcyclehasstarted.
Quick Spin Test Mode:
AsitentersintotheQuickSpinTestMode,itstartsspinningandreachestoitsmaximumRPM.
OncetheSpinspeedreachesthemaximumRPM,thespeeddropsimmediately.
ToholdQuickSpinTestMode(enteringHoldSpeedMode),presstheStart/Pausebutton.Ifthe
Start/PausebuttonispressedduringQuickSpinTestMode,itwillstopacceleratingandholdits
spinningspeedfor10minutesbeforegoingbacktoQuickSpinTestMode.
Also,tocanceltheholdandallowQuickSpinTestModetocontinue,presstheDelayStartand
TempKeystogetherfor3seconds.
IfyouholddowntheDelayStartandTemp.keysforthree(3)secondswhenthewashingmachine
isnotinHoldSpeedMode,QuickSpinModeisexitedandServiceModeisrestored.
Toavoidriskofelectricalshock,personalinjuryordeath;disconnectpowertowasher
beforeservicing,unlesstestingrequirespower.
WARNING
WA5471ABP_03051A-02(Technical information).indd 7 2012-02-13 �� 9:36:24

ALIGNMENT AND ADJUSTMENTS
8
Cycle Count Check Mode
Denition of Cycle Count Check Mode:
- CycleCountCheckModeistotallyupthenumberofwashings.
How to Enter:
- ToentertheCycleCountCheckMode,presstheSignalKeyduringServiceMode.
Cycle Count Check Mode:
1. ActivatetheServiceModeinadvance.
2.WhentheSignalkeyispressed,thetotalnumberofwashingswilllightupandasignalLEDwill
glow.
3.Themaximumnumberofcycleswillbe1999.
Thecounterwillrolloverto0andstartcountingagainafter1999.
4.Thecountingwillbecarriedoutattheendofthenormalcycle.
(FornormalandContinuousRuncycles,thecountiscarriedoutattheendofthecycles.
5. ToexittheCycleCountCheckMode,pressthe“Signal”keyagain.
S/W Version Check Mode
Denition of S/W Version Check Mode:
- S/WVersionCheckModeistobringupS/WVersioninformation.
How to Enter:
- ToentertheS/WVersionCheckMode,presstheSoilLevelKeyduringServiceMode.
S/W Version Check Mode:
1. ActivatetheServiceModeinadvance.
2. PresstheSoilLevelKeytobringupitssoftwareVersion
EX)GeneratedE49atVersion49(dEisMicomcode,49isit’ssoftwareversion)
3. ToexittheS/WVersionCheckMode,presstheSoilLevelS/Wonceagain.
Then,itreturnstotheServiceModewithmotorRPMilluminating.
Toavoidriskofelectricalshock,personalinjuryordeath;disconnectpowertowasher
beforeservicing,unlesstestingrequirespower.
WARNING
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ALIGNMENT AND ADJUSTMENTS
9
Fast Time Down Test Mode
Denition of Fast Time Down Test Mode:
- FastTimeDownTestModeistoforwardtheprogramtothenextcyclestage.
How to Enter:
- ToentertheFastTimeDownTestMode,presstheTempkeyduringServiceMode.
Fast Time Down Test Mode:
1. ActivatetheServiceModeinadvance.
2. Toforwardtheprogramtothenextcyclestage,presstheTempkey.
Each stage is located at key points of a complete cycle as follows:
- EndofEachFill(BeginningofWashorRinseTumbleSession)
Caution:CheckifthecurrentwaterlevelishigherthantheResetwaterlevelandthenperform
theFasttimedowntest.
- BeginningofDrainSession
- BeginningofSpinSession(Here,itchecksthewaterlevel.So,ifitisovertheresetlevel,itcarries
outdrainingbeforethespinning.)
- BeginningofFillSession
- BeginningofBleachFill
- BeginningofFabricSoftenerFill
- Every3minutesduringWashandRinseTumbleSession
Toavoidriskofelectricalshock,personalinjuryordeath;disconnectpowertowasher
beforeservicing,unlesstestingrequirespower.
WARNING
WA5471ABP_03051A-02(Technical information).indd 9 2012-02-13 �� 9:36:25

ALIGNMENT AND ADJUSTMENTS
10
Board Input Test Mode
Denition of Board Input Test Mode:
- BoardInputTestModeistodisplaysaspeciedinputafterakeypress.
How to Enter:
- ToentertheBoardInputTestMode,presstheExtraRinsekeyduringServiceMode.
Board Input Test Mode:
1. ActivatetheServiceModerst.
2. PressthekeytostartBoardInputTest.
3.TurntheJog-Dialsothatthenormalcourseisturnedon,andTheWaterTemperaturewillbe
displayedinCelsius.
4.TurntheJog-DialsothattheHeavydutycycleisturnedon,TheWaterTemperaturewillbe
displayedinFahrenheit.
5.TurntheJog-DialsothatthePermPresscycleisturnedon,Thedoorstatuswillbedisplayed(OP
ifopen,CLifclosed).
6. TurntheJog-DialsothattheRinse+SpinorQuickWashisturnedon,TheDoorLockSwitch
statuswillbedisplayed(ULifunlocked,LOiflocked).
Toavoidriskofelectricalshock,personalinjuryordeath;disconnectpowertowasher
beforeservicing,unlesstestingrequirespower.
WARNING
WA5471ABP_03051A-02(Technical information).indd 10 2012-02-13 �� 9:36:25

ALIGNMENT AND ADJUSTMENTS
11
Diagnostic Code Check Mode
Denition of Diagnostic Code Check Mode:
- DiagnosticCodeCheckModeistobringupthestoreddiagnosticcodes(referecodesforservice
technicians).
How to Enter:
- ToentertheDiagnosticCodeCheckModewithcode“d”ashing,presstheSpinkeyduring
ServiceMode.
Board Input Test Mode:
1.ActivatetheServiceModerst.
2. Pressthe“Spinkey”keytostartErrorCodeCheckModewithCode“d”ashing.
3. Tocyclethroughtheerrorcodes,turntheRotaryCycleSelectorinonedirection(either
ClockwiseorCounterclockwise).
4. Now,whenturningtheRotarySelectorKeyinthesamedirection,itshowserrorcodesfromthe
latest.
5. Whenturningitintheoppositedirection,itshowstheerrorcodesinthereverseorder.
Toavoidriskofelectricalshock,personalinjuryordeath;disconnectpowertowasher
beforeservicing,unlesstestingrequirespower.
WARNING
Service Mode Spin Diagnostic Code
WA5471ABP_03051A-02(Technical information).indd 11 2012-02-13 �� 9:36:25

ALIGNMENT AND ADJUSTMENTS
12
Demo Mode
- DemomodeisenteredwhenthePureCycle+ExtraRinsebuttonsarehelddownforve(5)
secondssimultaneouslyinthepoweronstate.
- WhenenteringDemomode,thebuzzerringsthree(3)timesand“----”isdisplayedonthe7
segmentdisplayandallotherLEDsareturnedo.(InitialDemomode)
- DemomodeconsistsofWASH,SPINandLEDmodes.
- IftheTempbuttonispressedduringtheinitialDemomode,“WASH”blinksonthe7segment
displayandthewashingmachineentersWASHmode.
- IftheStart/PausebuttonispressedinWASHmode,thedoorislocked(DoorLock)andthemotor
rotatesleftandrightat45RPMina7seconand3-secocycle.
- WASHmodecontinuesuptove(5)minutesoncestarted.Aftertheve(5)minuteshave
elapsed,“----”isdisplayedonthe7segmentdisplayandtheinitialDemomodeismaintained.
- IftheStart/PausebuttonispressedduringaWASHmodeoperation,“----”isdisplayedonthe7
segmentdisplayandtheinitialDemomodeismaintained.
- IftheSpinbuttonispressedintheinitialDemomode,“Spin”blinksonthe7segmentdisplay
andthewashingmachineentersSPINmode.
- IftheStart/PausebuttonispressedintheSPINmode,thedoorislocked(DoorLock)andaspin
isoperatedat1030RPM.Whenthespeedreaches0RPM,theNoSpin,Low,Medium,High,and
ExtraHighLEDsareturnedon.
- Duringaspinoperation,theNoSpinLEDturnsonwhenthespeedislowerthan400RPM.The
LowLEDturnsonbetween400RPMand700RPM.TheMediumLEDturnsonbetween700RPM
and900RPM.TheHighLEDturnsonbetween900RPMand1030RPM.AllspinspeedLEDturn
omorethan1030RPM.
- SPINmodecontinuesuptofour(4)minutesoncestarted.Afterthefour(4)minuteshave
elapsed,“----”isdisplayedonthe7segmentdisplayandtheinitialDemomodeismaintained.
- IftheStart/PausebuttonispressedduringaSPINmodeoperation,“----”isdisplayedonthe7
segmentdisplayandtheinitialDemomodeismaintained.
- IftheStart/PausebuttonispressedinLEDmode,allLEDsareturnedon.TheLEDmode
continuesuptothirty(30)secondsoncestarted.Afterthethirty(30)secondshaveelapsed,“---
-”isdisplayedonthe7segmentdisplayandtheinitialDemomodeisentered.
- IftheStart/PausebuttonispressedduringanLEDmodeoperation,“----”isdisplayedonthe7
segmentdisplayandtheinitialDemomodeisentered.
Toavoidriskofelectricalshock,personalinjuryordeath;disconnectpowertowasher
beforeservicing,unlesstestingrequirespower.
WARNING
WA5471ABP_03051A-02(Technical information).indd 12 2012-02-13 �� 9:36:26

13
TROUBLE DIAGNOSIS
- Asthemicomwashmachineisconguredofthecomplicatestructure,theremightbethe
servicecall.
Belowinformationispreparedforexacttroublediagnosisandsuitablerepairguide.
Caution for the Repair and Replacement
Pleasefollowbelowinstructionforthetroublediagnosisandpartsreplacement.
1)Assomeelectroniccomponentsaredamagedbythechargedstaticelectricityfromtheresin
partofmachineorthehumanbody,preparethehumanbodyearthorremovethepotential
dierenceofthehumanbodyandmachinebycontactingthepowersupplyplugwhenthe
workcontactingtoPCBisexecuted.
2)SinceAC120VisappliedtothetriacT1andT2onP.C.B,theelectricshockmayoccurbytouching
andbecarefulthatthestrongandweakelectricityaremixed.
3)AstheP.C.Bassemblyisdesignedfornotrouble,donotreplacetheP.C.Bassemblybythewrong
diagnosisandfollowtheprocedureofthetroublediagnosiswhenthemicomisnotoperated
normally.
TROUBLE SHOOTING
Toavoidriskofelectricalshock,personalinjuryordeath;disconnectpowertowasher
beforeservicing,unlesstestingrequirespower.
WARNING
WA5471ABP_03051A-02(Technical information).indd 13 2012-02-13 �� 9:36:26

14
TROUBLE DIAGNOSIS
Will Not Start
• Plugtheunitintothewalloutlet.Checkforpropervoltage.
• Checkfuseorresetcircuitbreaker.
• PushanykeytoturnonthewasherandpresstheStart/Pausekeytorunthewasher.
• ClosedoorandpushtheStart/Pausekeytorunthewasher.
• Checkifwasherisinapause,soakorsudsprocess.Waitbrieyanditmaystart.(Ifthewasherisinsuds
period,Sudswilllightupinsteadofremainingtime.)
• Checkforrestricteddrainsystem.(Ifthereiselectricalproblemindrainsystem,“nd”errorwilloccurafter30
minutes.)
• CheckWaterSupply.
• Checkthelineorwatervalvescreenlter.
• CheckifPCBconnectorsareassembledproperly.
• CheckifCN2terminalsonPCBareingoodcondition.(RefertoPCBConnectorCheck.)
• ReplacePCB.
Leaking
• Makesureinlethoseconnectionsarenotleaking.Checkforrubbergasketdamageduetoovertightening.
• Checkstandpipeforleak.Wrapadryragaroundthestandpipeopening.
Ifragbecomeswet,leakisfaultofhomeplumbing.
Besurethestandpipeiscapableofacceptingtheowofwaterfromthewasher.
• Makesureendofdrainhoseiscorrectlyinsertedandsecuredtodrainstandpipe.
• Checkinternalhoseconnections(ll,drainsystems,dispenserhoses&clamps).
• Checkrubberboot.Remove,repositionandreinstall,ifnecessary.
• Checkforpossiblekinkeddispensertooutertubhose.Hotwaterpressurizationmayforcedooropen.
Will Not Spin
• Makesuretoclosethedoorcompletely.
• Checkforwaterleftinsidethewasher.Ifso,goto“WillNotDrain”.
• PerformQuickTestModeorQuickSpinTest.Doesthewasherspin?(Beforethetest,emptytheunitinside.)
Ifitdoesn’ttumbleaftertheabove,changePCB.Whentheproblempersists,changethemotor.
• PerformQuickTestModeorQuickSpinTest.Doesthewasherspin?Ifitdoes,CheckPossibleunbalanced
loadscenarioinnormalmode.
• CheckforlooseconnectionsatPCB,WaterLevelSensor,Motor,HallSensorWireHarness.(CN9,CN1,CN8)
(RefertotheComponentTestingProcedure.)
• Checkmotorwindingsresistance.(CN8Pin1&3=11.6ohms(at±7%20°C/68°F),
Pin1&2=11.6ohms(at±7%20°C),
Pin2&3=11.6ohms(at±7%20°C))
TROUBLE SHOOTING
Toavoidriskofelectricalshock,personalinjuryordeath;disconnectpowertowasher
beforeservicing,unlesstestingrequirespower.
WARNING
WA5471ABP_03051A-02(Technical information).indd 14 2012-02-13 �� 9:36:26

15
TROUBLE DIAGNOSIS
No Water Fill
• PerformQuickTestMode.CheckallofWaterValvesvisually.
(ColdWaterValve,BleachWaterValve,SoftenerdispensesusingCold&BleachWaterValve,andHotWater
Valve.)
• Checkifwatertapsareturnedonfully.
• CheckWaterValvesandWaterLevelSensor(RefertoPCBConnectorCheck)
• Checkifthereisanykinkininlethoses.
• Checkifinletscreensarecloggedup.
• Checkifwaterhasenoughpressure.Ifso,ndoutitscontributors.
• Checkifthereisanyfrozenareaintheunit(DrainHose,etc)
• MeasuretheresistanceofWaterValveCoil.
(Itshouldread1.18Kohms.CheckPin#3ofCN6andpin#1.2.3.4ofCN4)
• CheckPressureS/WandPCBforlooseconnections.(RefertoPCBConnectorCheck.)
Tub Full of Suds
• Goto“WillNotDrain”and“WillNotSpin”andcheckthedraining.
• CheckPCBandDrainPumpforanyloosewireconnection.
• PerformQuickTestModeorBoardOutputTesttodrain.
• UseHE(High-Eciency)orlowsudsingdetergentspeciallyformulatedforfrontloadwashers.
• Reducetheamountofdetergentforthatspecicloadsizeandsoillevel.Keepinmindthattowelcreates
moresudsgenerally.
• Reducetheamountofdetergentwhenwaterissoft,orlaundryissmallorlightlysoiled.
• Doonemorewashingcyclewithcoldwaterandatablespoonofsaltwithoutdetergent.
Wet Clothes
• Unbalanceduetonotenoughload.Putadditionalload.
•
 Duetoexcessivesudsbyusinggeneraldetergent.UseHE(High-Eciency)orreduceitsquantity.
• LowSpinSpeedorDrainOnlywasselected.
• Goto“WillNotSpin”.
Will Not Lock
• PerformQuickTestMode.CheckDoorLock.
Checkthereistancefordoorlock.ifApprox0.2ohmbetweentheterminalofcontact(white-Redwire), 
andifnot,changepcb(refertopcbconnectorcheck).
• ReadLockSwitchandPCB(CN3).(RefertoPCBConnectorCheck.)
Will Not Unlock
• Displayshows“LO”.Turnoandontheunit.If“LO”keepsilluminating,checkPCBandDoorLockSwitch.
• ReadLockSwitchandPCB(CN3).(RefertoPCBConnectorCheck.)
• PerformQuickTestMode.CheckDoorLock.ChecktheresistancefordoorunlockifApprox0.2ohmbetween
theterminalofcontact(white-bluewire),andifnot,changepcb(refertopcbconnectorcheck).
TROUBLE SHOOTING
Toavoidriskofelectricalshock,personalinjuryordeath;disconnectpowertowasher
beforeservicing,unlesstestingrequirespower.
WARNING
WA5471ABP_03051A-02(Technical information).indd 15 2012-02-13 �� 9:36:26

16
TROUBLE DIAGNOSIS
No Key Operation
• OptionandFunctionbuttonsresponddierentlyaccordingtoeachcycle.
• ChildLockisbeingactivated.Toexit,holddownSpinlevelkeyandsoillevelkeysimultaneouslyuntilitsends
outabeepingsound.
• When“End“illuminatesonthedisplay,onlyPowerbuttonworks.PressPowerbuttonandmakenewcycle
selections.
Will Not Drain
• Checkforanykinkonthedrainhose.Ifany,straightitout.
• Checkforanyrestrictioninthedrainhose.
• ClosethedoorandpresstheStart/PauseButton.Forsafetyreasons,thewasherdoesnottumbleorspinwith
thedooropen.
• Whenitisfreezingoutside,checkifitisfrozeninsidethedrainhose.
• Checkifthewaterlevelsignalinputiscorrect.GotoBoardInputTestMode.
• GotoQuickTestModeanddoDrainPumpTest.
• Checkifthereisanytwistinthehose(theonebetweenTubandDrainPump).
• CheckifitreadsAC120Vatthepumpwhenaspincycleisselected.
• Readthewindingresistanceofthepumpmotor.(14.2±7%Ohms)
• CheckthepumpatPin#3ofCN6andpin#7ofCN4onPCB.ItshouldreadAC110~120V.(RefertoPCB
ConnectorCheck)
Wrong Water Temperature
• Checkifbothofthewatertapsarefullyopen.
• Ifthewaterheaterislocatedfarfromthewasher,screwoutthehotwatertapandletitswaterpassuntilyou
gethotwater.
• TooHot/TooCold:ReducedamountofwaterissuppliedwhilePCBcontrolstheinuxtoregulatetheactual
temperatureofthewaterinthetub.Thismayappeartobesignicantlyhotter/colderthanexpected.
• Checkifthetemperatureselectioniscorrect.
• DisconnectinlethosesfromtheWaterValveandremoveanyresidueintheinletscreens.
Noisy and/or Vibration/Walking
• Checkifthewasherisleveledandthelocknutsaretighteneduponthebottomplate.
• Checkifalloftheshippingboltsandspacersareremovedfromthebackpanel.
•
Checkifloadisbigenoughandthereisnounbalance.Ifthereisnotenoughload,putinafewtowelstobalanceit.
• Checkifthemotorisfastenedenough.
• Removevarioustroublecontributors(suchasdustcoatontheoor).
Buttons do not Respond
• OptionandFunctionbuttonsresponddierentlyaccordingtoeachcycle.
• ChildLockfeaturehasbeenselected.TodisablefeaturepressandholdTempandSpinsimultaneouslyuntila
beepisheard.
• Whendisplayshows“End”,onlythePowerbuttonwillfunction.PressPowerandmakenewcycleselections.
TROUBLE SHOOTING
Toavoidriskofelectricalshock,personalinjuryordeath;disconnectpowertowasher
beforeservicing,unlesstestingrequirespower.
WARNING
WA5471ABP_03051A-02(Technical information).indd 16 2012-02-13 �� 9:36:26

17
Hall Sensor Check
CheckVoltageatPin#4and#3ofCN1
TesterCheck=DC0.6V
CheckVoltageatPin#4and#2ofCN1
TesterCheck=DC0.6V
Motor Check
ResistanceatPin#1ofCN8andGND
=280㏀
ResistanceatPin#2ofCN8andGND
=280㏀
ResistanceatPin#3ofCN8andGND
=280㏀
Drain Motor_Pump Check
CheckVoltageatPin#3ofCN6andPin#9ofCN4
WhenDrainPumpoperates=AC120V
WaterValves/ Check
CheckVoltageatPin#3ofCN6andPin#1,2,3,4ofCN4
WhenValvesoperates=AC120V
Clutch-Motor
CheckVoltageatPin#3ofCN6andPin#8ofCN4
WhenValvesoperates=AC120V
Pump
CheckVoltageatPin#3ofCN6andPin#7ofCN4
WhenValvesoperates=AC120V
Heater Relay Check
CheckVoltageatPin#1ofCN8andPin#1ofRY13
WhenHeaterRelayoperates=AC120V
AC Power Check
CheckVoltageatPin#1and#3ofCN6
CheckVoltageatPin#1ofCN6andPin#2ofRY13
TesterCheck=AC120V
Door Lock Check
CheckVoltageatPin#3and#5ofCN3
WhenDoorLock=DC6.5V
PROBLEM CHECKING AND METHOD OF PCB
- IfyoupluginthepowercordandturnPowerS/Won,memorizeddataisdisplayed.
Ifanydataisnotdisplayed,checkthefollowings.
Thermistor Check
CheckResistanceatPin#9and#7ofCN8
TesterCheck=47
㏀
Water Sensor Check
CheckFrequencyatPin#11and#7ofCN8
Resetfrequency=25.6KHz
CheckFrequencyatPin#12and#7ofCN8
Resetfrequency=25.6KHz
TROUBLE SHOOTING
Toavoidriskofelectricalshock,personalinjuryordeath;disconnectpowertowasher
beforeservicing,unlesstestingrequirespower.
WARNING
WA5471ABP_03051A-02(Technical information).indd 17 2012-02-13 �� 9:36:29

18
Model : WA5471*, WA5451*
WIRING DIAGRAM
Toavoidriskofelectricalshock,personalinjuryordeath;disconnectpowertowasher
beforeservicing,unlesstestingrequirespower.
WARNING
WA5471ABP_03051A-02(Technical information).indd 18 2012-02-13 �� 9:36:30

19
WATER FLOW DIAGRAM
Toavoidriskofelectricalshock,personalinjuryordeath;disconnectpowertowasher
beforeservicing,unlesstestingrequirespower.
WARNING
WA5471ABP_03051A-02(Technical information).indd 19 2012-02-13 �� 9:36:30

WA5471ABP_03051A-02(Technical information).indd 20 2012-02-13 �� 9:36:30