Samsung WA400 Series User manual

1

WASHING MACHINE

Technical Information

Code No. : DC68-03132A-03_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 : WA456*

WA422*

WA400*

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

ALIGNMENT AND ADJUSTMENTS

2

GENERAL ERROR FUNCTION

NO

Error Code

(Diagnostic Code

Error Image)

Description Corrective Action

1

Thewaterlevelfailstodropbelow

theResetWaterLevelwithin30

minutes.

Goto“WillNotDrain”

TroubleshootingSection.

2

DoorfailstoUnlockAfter7attempts.

Goto“WillNotUnlock”

TroubleshootingSection.

3

(WA456*/WA422*/WA400*)

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

Doorfailstolockafter7attempts.

Goto“WillNotLock”

TroubleshootingSection.

5

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

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

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.

8

Unbalanceorcabinetbumpis

detectedduringnalspin

Goto“WetClothes”Troubleshooting

Section.

9

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

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.

Toavoidriskofelectricalshock,personalinjuryordeath;disconnectpowertowasher

beforeservicing,unlesstestingrequirespower.

WARNING

ALIGNMENT AND ADJUSTMENTS

3

NO

Error Code

(Diagnostic Code

Error Image)

Description Corrective Action

11

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.

12

(WA422*/WA400*)

Thehot/coldwaterhoseconnection

isnotcorrect.

Pleaseconnectthehot/coldwater

hoseconnectioncorrectly.

(WA456*)

13

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

CommunicationerrorbetweenSUB

PBAandMAINPBA

CheckMainPBA,SUBPBA&Wire-

harness.ReplacePCB

15

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

AbuttonexceptthePowerbuttonis

continuallypressed.

CheckwhethereitherthePower

switchoratactswitchiscontinually

pressed

Toavoidriskofelectricalshock,personalinjuryordeath;disconnectpowertowasher

beforeservicing,unlesstestingrequirespower.

WARNING

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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

WA422*/WA400*

ALIGNMENT AND ADJUSTMENTS

5

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

-SoilLevelKey:DoorLock/UnlockTest

-Spin:DrainPumpTest

Toavoidriskofelectricalshock,personalinjuryordeath;disconnectpowertowasher

beforeservicing,unlesstestingrequirespower.

WARNING

.

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5sec.

Continuous Run Mode:

1. Press

DelayStart+SoilLevel

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Start+SoilLevel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StartandAquaJet

TM

(WA456*)/ExtraRinse(WA422*/

WA400*)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

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StartandAquaJet

TM

(WA456*),ExtraRinse(WA422*/WA400*)

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EcoPlus(WA456*)/PreSoak(WA422*,WA400*)

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Eco

Plus(WA456*)/PreSoak(WA422*,WA400*)Keystogetherfor3seconds.

IfyouholddowntheDelayStartandEcoPlus(WA456*)/PreSoak(WA422*,WA400*)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

TM

Delay Start and AquaJet (WA456*)/

Extra Rinse(WA422*/WA400*)

Delay Start + Eco Plus(WA456*)/

Pre Soak(WA422*,WA400*)

While it is not in Hold Speed Mode

Delay Start + Eco Plus(WA456*)/

Pre Soak(WA422*,WA400*)

3 sec

While a cycle is not running

Delay Start + Eco Plus(WA456*)/

Pre Soak(WA422*,WA400*) for 3 sec or

after 10 minutes

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

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

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Ecoplus(WA456*)/ExtraRinse(WA422*/WA400*)

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Delicates/HandWashcourse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course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PureCyclecourse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

Eco Plus(WA456*)/

Extra Rinse(WA422*/WA400*)

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

ALIGNMENT AND ADJUSTMENTS

11

Demo Mode

- DemomodeisenteredwhentheEcoPlus(WA456*)+PreSoak/PreSoak+ExtraRinse(WA422*/

WA400*)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”(WA422*/WA400*))

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110RPMina1.4seconand0.9sec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”(WA422*/WA400*))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1000RPM(WA456*)/800RPM(WA422*/WA400*).

- 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”(WA422*/WA400*))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

Eco Plus(WA456*) + Pre Soak

Pre Soak + Extra Rinse(WA422*/WA400*)

3sec

While a cycle is not running

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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.

Toavoidriskofelectricalshock,personalinjuryordeath;disconnectpowertowasher

beforeservicing,unlesstestingrequirespower.

WARNING

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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

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

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

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 : WA456*)

- 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

%0

*#..5'0514

%0

&QQT.QEM

%0

%0

%0

%0

/+%1/9TKVKPI

%0

219'4

4'.#;

CN8 CN12

CN7

Micom writing

TROUBLE SHOOTING

Toavoidriskofelectricalshock,personalinjuryordeath;disconnectpowertowasher

beforeservicing,unlesstestingrequirespower.

WARNING

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 : WA422*/WA400*)

- 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

%0

*#..5'0514

%0

&QQT.QEM

%0

%0

%0

%0

/+%1/9TKVKPI

%0

219'4

4'.#;

18

Model : WA456*/WA422*/WA400*

WIRING DIAGRAM

Toavoidriskofelectricalshock,personalinjuryordeath;disconnectpowertowasher

beforeservicing,unlesstestingrequirespower.

WARNING

19

Model : WA456*

Model : WA422*/WA400*

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

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