Samsung WA45H7200A Manual

1
WASHING MACHINE
Technical Information
Code No. : DC68-03132G-01_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 : WA48H7400A*
WA45H7200A*
WA45H7000A*
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
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ALIGNMENT AND ADJUSTMENTS
2
GENERAL ERROR FUNCTION
NO
Error Code
(Diagnostic Code
Error Image)
Description Corrective Action
1 5E Thewaterlevelfailstodropbelowthe
ResetWaterLevelwithin30minutes.
Goto“WillNotDrain”
TroubleshootingSection.
2 dE1 DoorfailstoUnlockAfter7attempts. Goto“WillNotUnlock”
TroubleshootingSection.
3 4E
Whenthellingcontinuesformore
than60minutesorthereisnochangeof
waterlevelfor5minutes.
Goto“NoWaterFill”
TroubleshootingSection.
4 dE1 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.
61E
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.
7OE
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start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thewater
valvesareOK,checkwaterlevel.
8UE Unbalanceorcabinetbumpisdetected
duringnalspin.
Goto“WetClothes”
TroubleshootingSection.
9 dE 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.
10 tE
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.
11 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.
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
3
NO
Error Code
(Diagnostic Code
Error Image)
Description Corrective Action
12 4E Thehot/coldwaterhoseconnectionis
notcorrect.
Pleaseconnectthehot/cold
waterhoseconnectioncorrectly.
13 SUd
Sd
Sudsisdetectedduringthewashing
session.(“SUd”or“Sd”isnotanerror.
Whenitnisheswashing,Endandthe
“SUd”or“Sd”codewillblinkinturn.)
Guideausertoreduceamount
ofdetergentusage.
14 AE
CommunicationerrorbetweenSUBPBA
andMAINPBA.
CheckMainPBA,SUBPBA&
Wire-harness.ReplacePCB.
15
8E
8E1
8E2
IftheMEMScommunicationerroror
MEMStroublediagnosiserroroccur,this
messagewillbedisplayed.
1.ChecktheMEMSsensorand
PBA.
2.Checkthewireconnector
terminals.
16 bE2 AbuttonexceptthePowerbuttonis
continuallypressed.
Checkwhethereitherthe
Powerswitchoratactswitchis
continuallypressed.
17 4E2 Thehot/coldwaterhoseconnection
isnotcorrect.
Pleaseconnectthehot/cold
waterhoseconnectioncorrectly.
18 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.
19
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.
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
4
TEST MODE
Test Mode:
EachTestModeisasfollowsinthecomingpages.
Thetestmodesaremodesunabletogetan
accessoncethewashingcyclehasstarteddueto
safetyreasons.
Quick Test Mode
Toavoidriskofelectricalshock,personalinjuryordeath;disconnectpowertowasher
beforeservicing,unlesstestingrequirespower.
WARNING
WA48H7400A*
WA45H7200A*
WA45H7000A*
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ALIGNMENT AND ADJUSTMENTS
5
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.
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
-DelayEndKey:DoorLock/UnlockTest
-Spin:DrainPump/CirculationPumpTest
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
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End+Temp.Keytogetherfor5sec.
Continuous Run Mode:
1. Press
DelayEnd+ Temp.Keyfor5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End+ Temp. Keyfor5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DelayEndandPreSoakKey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
Delay End + Temp.
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ALIGNMENT AND ADJUSTMENTS
7
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DelayEndandPreSoakKey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EndandSelfCleanKey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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EndandSelf
CleanKeytogetherfor3seconds.
IfyouholddowntheDelayEndandSelfCleankey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
Delay End + Pre Soak
Delay End + Self Clean
While it is not in Hold Speed Mode
Delay End + Self Clean
3 sec
While a cycle is not running
Delay End + Self Clean
for 3 sec or after 10 minutes
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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PreSoakKeyduringServiceMode.
Cycle Count Check Mode:
1. ActivatetheServiceModeinadvance.
2.WhenthePreSoak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“PreSoak”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.
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.
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SelfClean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PermPresscourseisturnedon,TheWaterTemperaturewillbe
displayedinFahrenheit.
5.TurntheJog-DialsothattheActiveWear(WA48H7400A*,WA45H7200A*)/QuickWash
(WA45H7000A*)cycleisturnedon,Thedoorstatuswillbedisplayed(OPifopen,CLifclosed).
6. TurntheJog-DialsothattheQuickWash(WA48H7400A*,WA45H7200A*)/Spin(WA45H7000A*)
cycleisturnedon,TheDoorLockSwitchstatuswillbedisplayed(ULifunlocked,LOiflocked).
7. TurntheJog-DialsothattheSpin(WA48H7400A*,WA45H7200A*)/Rinse+Spin(WA45H7000A*)
cycleisturnedon,TheWaterFrequencywillbedisplayed.
Toavoidriskofelectricalshock,personalinjuryordeath;disconnectpowertowasher
beforeservicing,unlesstestingrequirespower.
WARNING
Self Clean
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ALIGNMENT AND ADJUSTMENTS
10
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
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ALIGNMENT AND ADJUSTMENTS
11
Demo Mode
- DemomodeisenteredwhenthePreSoak+SelfClean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,“USH”(“US”(WA45H7000A*))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100RPMina1.5seconand1.0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,“SPn”(“SP”(WA45H7000A*))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(WA48H7400A*)/800RPM(WA45H7200A*/WA45H7000A*).
- 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SoilLevelbuttonispressedintheinitialDemomode,“LED”(“LE”(WA45H7000A*))blinkson
the7segmentdisplayandthewashingmachineentersLEDmode.
- 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
Pre Soak + Self Clean
3sec
While a cycle is not running
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ALIGNMENT AND ADJUSTMENTS
12
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themachineorthehumanbody,preparethehumanbodybygroundingittotheearth
orremovethepotentialdierenceofthehumanbodyandmachinebycontactingthepower
supplyplugwhencontacttothe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.
Toavoidriskofelectricalshock,personalinjuryordeath;disconnectpowertowasher
beforeservicing,unlesstestingrequirespower.
WARNING
WA7000HA WASH_WA48H_TECH MANUAL_DC68-03132G-01_EN.indd 12 2014-1-6 15:56:29

13
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thestandpipeforleaking.Wrapadryragaroundthestandpipeopening.Iftheragbecomeswet,the
leakisthe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
WA7000HA WASH_WA48H_TECH MANUAL_DC68-03132G-01_EN.indd 13 2014-1-6 15:56:29

14
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
WA7000HA WASH_WA48H_TECH MANUAL_DC68-03132G-01_EN.indd 14 2014-1-6 15:56:29

15
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.(15±10%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
WA7000HA WASH_WA48H_TECH MANUAL_DC68-03132G-01_EN.indd 15 2014-1-6 15:56:29

16
Hall Sensor Check
CheckVoltageatPin#4and#3ofCN9
TesterCheck=DC0.6V
CheckVoltageatPin#4and#2ofCN9
TesterCheck=DC0.6V
Motor Check
ResistanceatPin#1ofCN3andGND
=226㏀
ResistanceatPin#2ofCN3andGND
=226㏀
ResistanceatPin#3ofCN3andGND
=226㏀
Drain Motor_Pump Check
CheckVoltageatPin#3ofCN1andPin#5ofCN4
WhenDrainPumpoperates=AC120V
Water Valves/ Check
CheckVoltageatPin#3ofCN1andPin#1,2,3,4ofCN4
WhenValvesoperates=AC120V
Clutch-Motor
CheckVoltageatPin#3ofCN1andPin#8ofCN4
WhenValvesoperates=AC120V
AC Power Check
CheckVoltageatPin#1and#3ofCN1
TesterCheck=AC120V
Door Lock Check
CheckVoltageatPin#3and#5ofCN8
WhenDoorLock=DC6.5V
PROBLEM CHECKING AND METHOD OF PCB (Model : WA48H7400A*)
- 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#8and#7ofCN501
TesterCheck=47
㏀
Water Sensor Check
CheckFrequencyatPin#10and#15ofCN501
Resetfrequency=25.6KHz
CheckFrequencyatPin#11and#15ofCN501
Resetfrequency=25.6KHz
ju`
ohssGzluzvy
ju_
kGs 
ju\
ju[
juZ
ju]
tpjvtG~
juX
wv~ly
ylsh
juXW
ju\
CN201
Micom writing
CN802CN501
TROUBLE SHOOTING
Toavoidriskofelectricalshock,personalinjuryordeath;disconnectpowertowasher
beforeservicing,unlesstestingrequirespower.
WARNING
WA7000HA WASH_WA48H_TECH MANUAL_DC68-03132G-01_EN.indd 16 2014-1-6 15:56:30

17
Hall Sensor Check
CheckVoltageatPin#4and#3ofCN9
TesterCheck=DC0.6V
CheckVoltageatPin#4and#2ofCN9
TesterCheck=DC0.6V
Motor Check
ResistanceatPin#1ofCN3andGND
=226㏀
ResistanceatPin#2ofCN3andGND
=226㏀
ResistanceatPin#3ofCN3andGND
=226㏀
Drain Motor_Pump Check
CheckVoltageatPin#3ofCN1andPin#5ofCN4
WhenDrainPumpoperates=AC120V
Water Valves/ Check
CheckVoltageatPin#3ofCN1andPin#1,2,3,4ofCN4
WhenValvesoperates=AC120V
Clutch-Motor
CheckVoltageatPin#3ofCN1andPin#8ofCN4
WhenValvesoperates=AC120V
AC Power Check
CheckVoltageatPin#1and#3ofCN1
TesterCheck=AC120V
Door Lock Check
CheckVoltageatPin#3and#5ofCN8
WhenDoorLock=DC6.5V
PROBLEM CHECKING AND METHOD OF PCB (Model : WA45H7200A*)
- 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CN802
TesterCheck=47
㏀
Water Sensor Check
CheckFrequencyatPin#11and#7ofCN802
Resetfrequency=25.6KHz
CheckFrequencyatPin#12and#7ofCN802
Resetfrequency=25.6KHz
%0
*#..5'0514
%0
&QQT. QEM
%0
%0
%0
%0
/+%1/9TKVKPI
%0
219'4
4'.#;
CN201
Micom writing
CN802CN501
TROUBLE SHOOTING
Toavoidriskofelectricalshock,personalinjuryordeath;disconnectpowertowasher
beforeservicing,unlesstestingrequirespower.
WARNING
WA7000HA WASH_WA48H_TECH MANUAL_DC68-03132G-01_EN.indd 17 2014-1-6 15:56:30

18
Hall Sensor Check
CheckVoltageatPin#4and#3ofCN9
TesterCheck=DC0.6V
CheckVoltageatPin#4and#2ofCN9
TesterCheck=DC0.6V
Motor Check
ResistanceatPin#1ofCN3andGND
=226㏀
ResistanceatPin#2ofCN3andGND
=226㏀
ResistanceatPin#3ofCN3andGND
=226㏀
Drain Motor_Pump Check
CheckVoltageatPin#3ofCN1andPin#5ofCN4
WhenDrainPumpoperates=AC120V
Water Valves/ Check
CheckVoltageatPin#3ofCN1andPin#1,2,3,4ofCN4
WhenValvesoperates=AC120V
Clutch-Motor
CheckVoltageatPin#3ofCN1andPin#8ofCN4
WhenValvesoperates=AC120V
AC Power Check
CheckVoltageatPin#1and#3ofCN1
TesterCheck=AC120V
Door Lock Check
CheckVoltageatPin#3and#5ofCN8
WhenDoorLock=DC6.5V
PROBLEM CHECKING AND METHOD OF PCB(Model : WA45H7000A*)
- 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CN802
TesterCheck=47
㏀
Water Sensor Check
CheckFrequencyatPin#11and#7ofCN802
Resetfrequency=25.6KHz
CheckFrequencyatPin#12and#7ofCN802
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
%0
*#..5'0514
%0
&QQT. QEM
%0
%0
%0
%0
/+%1/9TKVKPI
%0
219'4
4'.#;
CN802CN501
CN201
Micom writing
WA7000HA WASH_WA48H_TECH MANUAL_DC68-03132G-01_EN.indd 18 2014-1-6 15:56:31

19
Model : WA48H7400A*
Model : WA45H7200A* / WA45H7000A*
WIRING DIAGRAM
Toavoidriskofelectricalshock,personalinjuryordeath;disconnectpowertowasher
beforeservicing,unlesstestingrequirespower.
WARNING
WA7000HA WASH_WA48H_TECH MANUAL_DC68-03132G-01_EN.indd 19 2014-1-6 15:56:32

20
Model : WA48H7400A* / WA45H7200A*
Model : WA45H7000A*
C
O
L
D
H
O
T
B
L
A
C
K
W
H
I
T
E
B
L
U
E
R
E
D
MIST
C
O
L
D
H
O
T
B
L
A
C
K
W
H
I
T
E
R
E
D
BLEACH
B
L
U
E
MIST
B
L
U
E
WATER FLOW DIAGRAM
Toavoidriskofelectricalshock,personalinjuryordeath;disconnectpowertowasher
beforeservicing,unlesstestingrequirespower.
WARNING
WA7000HA WASH_WA48H_TECH MANUAL_DC68-03132G-01_EN.indd 20 2014-1-6 15:56:32