4-1. ERROR ITEMS AND DIAGNOSTIC CODES - … for error code 3 (See Table for code definition). •...

Troubleshooting _ 27

4. TROuBLESHOOTING

4-1. ERROR ITEMS AND DIAGNOSTIC CODESAnoccurrenceofanErrorwillmakeasoundoferrormelodyfor5secandcontinuouslyshowoneoftheErrorDisplaysfromthefollowingerrors.

Error Display Trigger Action Taken

tECloggedLintScreen Ventisrestricted

Checkfor:- Cleanthescreenorvent.- Checkthethermistor.

dERunningthedryerwithdooropen Checkfor:

- Closethedoorandthenrestart.

dfDoorisnotclosingproperly Checkfor:

- Checkthedoorswitch.

bE2

Unitdetectsabuttonisbeingpressedforover30secsorbuttonisstuck

Checkfor:- MakesureabuttonisNOTbeingpressed

continuously.- Tryrestartingthecycle.

hE

InvalidheatingTemp Checkfor:- ChecktheHeaterthermistor.- Inthecaseofgasmodel,checkforthegas

issuppliedcontinually.

EtEEPROMisnotcommunicatingproperly Checkfor:

- Checkthecommunicationcircuitbetweenmain and EEPROM.

fEInvalidpowersourceFrequency Checkfor:

- CheckthePowerfrequency.- ChecktheAConcheckcircuit.

28 _ Troubleshooting

4-2. TEST MODE

Continuous Run Mode

TEST MODEPowerOnstate (Normalusermode)

Wrinkle Prevent + Dry Level 7 SEC Continuous Run Mode

Continuous Run Mode :1. PressWrinklePrevent+DryLevelfor7secduringPowerOnState(NormalUserMode).2. OnceinContinuousRunMode,display“CC”for1secandthenumberofCyclefor1secandtheremainingtimefor1

sec in turns.3. ThepreviouscyclewillrestartduringContinuousRunModeuntilthemodeisdeactivated.4 DuringContinuousRunMode,pressWrinklePrevent+DryLevelfor7secondstoreturntonormalusermode.

Service ModeDefinitionofServiceMode:• DryermustbeonbeforeServiceModecanbeentered.• UponentryintoServiceMode,theSensorBarTouchDatawillbeshown(DefaultServiceMode).How to Enter :• ToenterServiceMode,pressWrinklePreventandTempKeysfor3seconds,untilitsendsoutabeepingsound.• IfpressingWrinklePrevent+TempKeysfor3secondsinServicemode,itwillreturnNormalmode.• EventhoughenteringServicemode,theoperatingcyclewillnotbeinfluenced.

Sensor Bar Touch Data ModeDefinitionofSensorBarTouchDataMode:• Thisactionwillputthedryerintosensorbartouchdatamode.• DryerwilldisplaySensorBardata.ThismodeisdefaultmodeofenteringservicemodeHow to Enter :• WithPowerOnpressingWrinklePreventandTempKeysfor3seconds.

Cycle Count ModeDefinitionofCycleCountMode:• ThismodeistobringupthetotalnumberofcyclesthatUserhavecarriedout.How to Enter :• ToentercyclecountmodepresstheWrinklePreventinServiceMode.

Software Version ModeDefinitionofSoftwareVersionMode:• Itistoretrieveitssoftwareversion.How to Enter :• AtServiceMode,pressTempuntilitsendsoutabeepingsound.

ex)Incaseof“U005”,U0meansmajorversion“U0”05meansminorversion“05”.• IfpressTempkeyInSoftwareVersionMode,itwillreturnServiceMode.

Data Display ModeDefinitionofTemperatureDisplayMode:• DisplayMode0:Temperaturedata(Celsius).• DisplayMode1:AverageTouchSensordatafor1minute.• DisplayMode2:AverageTemperature(Celsius)datafor1minute.How to Enter :• WithPowerOn,pressAdjustUpKey+AdjsutDownKeyfor7secondsuntilitsendsoutabeepingsound.• Ifnotpressedanykeysfor5minutes,itwillbesetbackfromDataDisplayMode.• IfpressingAdjustUpKeyinthismode,DisplayModeIDwillbeincreased.• IfpressingAdjustDownKeyinthismode,DisplayModeIDwillbedecreased.

Converting°C→°F

Celsius(°C) -30 -10 10 30 50 70

Fahrenheit(°F) -22 14 50 86 122 158 F=9/5C+32


System Check Mode

TEST MODEPowerOnstate (Normalusermode)

Wrinkle Prevent + Dry Level 7 SEC SystemCheckMode

DefinitionofServiceMode:• -“t2”willdisplay.• SystemCheckMode(t2mode)ProgressFunctionPerformedStart/PauseMotor(CW)RelayOn→HeaterRelayOn

→HeaterRelayOff,Motor(CW)RelayOffHow to Enter :• WhileinPowerOff,pressingtheDryLevel+PowerkeyssimultaneouslywillputthedryerintotheSystemCheck

mode.

4-3. TROuBLE DIAGNOSISAsthemicomdrymachineisconfiguredforthecomplicatestructure,theremightbeaservicecall.Thebelowinformationispreparedforexacttroublediagnosisandsuitablerepairguide.

Caution for the repair and replacement

Please follow below instruction for the trouble diagnosis and parts replacement.

1. Assomeelectroniccomponentscanbedamagedbystaticelectricityfromtheresinpartofdryerorthehumanbody,removethepotentialdifferenceofthehumanbodyandthedryerbycontactingthepowerplugbeforeyoustartworkingatPCB.

Powersupplyplug

2. SinceAC220~240VisappliedtothetriacT1andT2onP.C.B,theelectricshockmayoccurbytouching.Becarefulthestrongandweakelectricityaremixedeachother.

3. AstheP.C.Bassemblyisdesignedfornotrouble,donotreplacetheP.C.Bassemblybythewrongdiagnosisandfollowtheprocedureofthetroublediagnosiswhenthemicomisnotoperatednormally.

No Problem What to do

1 WillNotStartorRun

• Allwiresarehookeduptotheircorrespondingterminals.• Isthedryerispluggedin.• Blownfuseorcircuitbreaker.• IstheDoorswitchfunctional...doorclosed.Checkforerrorcode3(SeeTableforcode

definition).• Start/Pauserotaryselectordialfunctional.• IsthecontrolBoardoperational.• BeltofforbrokenandBeltCut-offSwitchoperates.• Isthemotorfunctional.• Checkmotorwindingresistance:2.88ohmsbetweenpin#3and4,3.5ohmsbetweenpin#4

and 5.

2 Motorruns/tumblerwillnotturn

• Beltofforbroken/damaged.• Idlertensionspringtooweakorstretched.• Idlerpulleyjammedorstuck.

3 Runsafewminutesandthenstops

• Lintbuilduparounddrivemotor.• Lowvoltagepresent.• Blowerimpellerblockedinblowerhousing.• Checktheactuatorofmotor.


No Problem What to do

4 Blowsfusesortripscircuitbreaker

- Isthebeltconnectedwell?- Isthewindingofthemotorcontinuous?(Rotorwinding,statorwinding,generator)- Isthemotorprotectornormal?• Ifabovepointsarenotfound,thePCBassemblyisoutoforder.Replaceit.

5 Blowsfusesortripscircuitbreaker(GasModel)

• Duringignitionthedryerwilldraw6amps.WiththeburnerON,thedryerwilldraw4.5amps.Ifthedryerisdrawingamperagesabovethis,thenthehousewiring,fuseboxorcircuitbreakerissuspectedtobeatfault.

• Igniterharnesslooseandshortedtobase.• Incorrectwiringorwireshortedtoground.• Drivemotorwindingshortingtoground.

6 Willnotheat(motorruns)

Openheatingelement.• Hi-Limittripseasilyorisopen.• Regulatingthermostattripseasilyorisopen.• Membraneswitchopen.• CheckThermistor.

7 WillNotDryGasModelPoorGas Ignition

Whenthedryerisoperatedonaheatsetting,theignitershouldbeenergizedandburnershallfirewithin45secondsat120VAC.Thefailureofacomponentinthissystemwillusuallybeindicatedbyoneofthreesymptoms(No.8,No.9,No.10)

8 Theigniterdoesnotglow

Iftheigniterdoesnotheatup,removepowerandusinganohmmeter,checkthefollowing:• Openflamesensor• Openigniter• Shortedboostercoil• Openwiring• Badmotorswitch(Neutralsupply)• Nopowerfromcontrol(L1supply)

9 Igniterglows-Nogasignition

Iftheigniterheatsupbutthemainburnerflameisnotignited,removepowerandusinganohmmeter,checkthefollowing:• Opensecondarycoil• Openholdingcoil• Openwireharness• Stuckflamesensor(Stuckclosed)

10 Thegasisignitedbuttheflamegoesout

Ifanormalignitiontakesplaceandafterashortwhiletheflamegoesout,checkforthefollowing:• Radiantsensorcontactsopeningprematurely.• WeakgasvalvecoilmayopenwhenstressedbyhigherTemps.• WeakHi-Limit• Poorventing• Baddrumseals

11ImproperdryingclotheswrinkledRoughtexturelongdry time

• Thelintfilterisnotclean.• Anyrestrictionintheexhaust.• Theoutsideexhausthooddamperdoorstuckclosed.• Istheexhausttoolong,toomanyelbows,flexductworkinstalled.• Poorintakeairavailableforthedryer.• Incorrecttumblerspeed.Tumblerbeltslipping.• Blowerimpellerbound;checkforforeignmaterialinblowerarea.• Customeroverloadingdryer.• Checkclothinglabelsforfabriccontentandcycleselected.• Clothestoowetduetoinsufficientspinoutbywasher.

12 Noisyand/OrVibration

• “Thumping”Checkforloosetumblerbaffle,reartumblerroller(s)wornormisaligned,out-of-roundtumblerorhighweldseamontumbler.

• “Ticking”Checkforloosewireharnessorobjectcaughtinblowerwheelarea.• ScrapingCheckforfrontorrearbulkheadfeltsealoutofpositionorworntumblerfront

bearings.• “Roaring”Checkforblowerwheelrubbingonblowerhousingorbadmotorbearings.• Poppingorsquealingsound.Checkforastickyorfrayedbelt.


4-4. SYMPTOMS, DIAGNOSES AND ACTIONS

The power does not work.

TheproblemisinthemainPCBassembly.Pleasereplaceit.

SettheinputACvoltage.(CheckAC120/240V)

Neutral

EarthL2 L1

120V 240V

Directlyconnecttheterminalblock.(ConnectintheorderofLive2,Neutral,Live 1)

Neutral

EarthL2 L1

Connectthehousing.(Check120VforACpower)

Checkthewire.

ReplacethesubPBA.(CheckDCpower,signalandkey)

EncourageRingterminalsuse,butwhenuseSpadeterminals,thatconfirmwhetherconfirmedfinish.

Ring terminalsSpade terminals

IstheinputACvoltagenormal?

Yes

No

IsthesubPBAnormal?

Yes

No

Istheterminalblockconnectionnormal?

Yes

No

Isthehousingconnectionnormal?

Yes

No

IsthewireamongthemainsubPCBsingoodcondition?

Yes

No


The drum does not work.

TheproblemisinthePCBassembly.Pleasereplaceit.

PresstheStartbutton.(Start/Pause is repeated)

Closethedoor.(CheckwhetherthedoorS/Wispressed)

Checkthewireconnectionofthepowersupply.(CheckthecontactpointandconnectedconditionofthedoorS/W)

COMNONC

Checkiftheconnectorisnormal.(Normal:Checkwhetheritis0Ωwhenthepowerisunplugged)

1. CheckthebeltcutS/Wandconnectedcondition. (Normal:Checkwhetheritis0Ωwhenthepowerisunplugged)

2. Checktheconnectedconditionofthemotor,idleranddrumbelt.

Beltcut-offS/W

IstheStartbuttonon?

Yes

No

Istheconnectedconditionofthebelt

normal?

Yes

No

Isthedoorclosedproperly?

Yes

No

IstheconnectiontothedoorS/W

normal?

Yes

No

Isthethermostatnormal?

Yes

No

Checkwhetherthemotorprotectorisoperating.(Checkforoverload,drumconstraint,centrifugalS/Wetc.)

Isthemotornormal?

Yes

No


The clothes are not dried.

TheproblemisinthePCBassembly.Pleasereplaceit.

Installtheventsothatitisnotblockedtotheoutside.(Checktheexhausthole)

Cleanthefilter.(Checkifthereareanyalienparticlesinthefilter)

Connecttheterminalblockproperly.(ChecktheconnectionofLive2,Neutral,Live 1)

Neutral

Earth

L2 L1

Connectthetouchsensor.(CheckthePCBandtouchsensor)uForfurtherinstructions,pleasereferto38page“SensorBar&TemperatureSensorcheck”

Istheventproperlyinstalled?

Yes

No

ChecktheSafety,Hi-Limitthermostat.(Checkthecauseofsafetybeingoff)

Didyoucleanthefilterbeforedrying?

Yes

No

Istheterminalblockconnectionnormal?

Yes

No

Isthetouchsensornormal?

Yes

No

IstheTamp.Sensornormal?

Yes

No

Isthesafety,Hi-limitthermostatnormal?

Yes

No

Istheheaternormal?

Yes

No

Replacethethermistor(ChecktheconnectionbetweenthePCBandtermistorandcheckforanydisconnection)uForfurtherinstructions,pleasereferto38page“SensorBar&TemperatureSensorcheck”

Replacetheheater(Removethepowerandcheckwhethertheheatercoilhasaresistanceofabout10Ω)


The lamp does not work.

Checkiftheinputvoltageisproperlycomingin.

Neutral

Earth

L2 L1

ReplacethedoorS/W.(Door operation of door S/W)

Connectthepowerproperly.(ChecktheconnectionbetweenterminalblockanddoorS/W)

COMNONC

Replacethelamp.(Checkfordisconnectionoflampandsocket)

IsthedoorS/Wstructurallyon/off?

Yes

No

Isthepowerconnectionnormal?

Yes

No

Isthelampnormal?

Yes

No


There is an abnormal noise in the dryer.

Itisnormal.

Reassemblethedoorseal.(Checktheassembledconditionofthedoorsealandcheckthedoorlever)

Doyouhearawhistlingsoundfrom

thedoorseal?

No

Yes

1. Checktheroller. (Checktherollerthatsupportsthedrumand rotates)

2. Checkthedrum. (Checkifthedrumweldingiscracked)

Doesthenoisecomefromthedrum?

No

Yes

1. Checktherotatingpartoftheidler. (Idlerbracketbending,bracketscrew)

2. Removeanyalienparticleonthewingsofthefan. (Noisecanbegeneratedfromtheunbalanceofthefanduetoalienparticleonthefan.Checkthetightenedconditionofthenut.)

Isthereanabnormalnoiseinthemotor

part?

No

Yes

1. Noisefromdrumbackandheaterductmovement. (Changethecontactingpartandcheckthescrewfixation)

2. Vibrationofheaterheatwire. (Checkthefixationpartoftheheatwire)

Isthereanabnormalnoisefromtheheater

part?

No

Yes


4-5. COMPONENT TESTING PROCEDuRES WARNING

Toavoidriskofelectricalshock,personalinjuryordeath;disconnectpowertodryerbeforeservicing,unlesstestingrequirespower.

Component electrical testing (with ohmmeter)

• Thermistorresistance10KΩat25°C77°F

• Thermostat1resistance<1Ω

Thermostat1

Thermistor

85°C,25Athermalcut-off

• Thermostat3resistance<1Ω- Ifresistanceisinfinity,replacethermostat3.

• Thermostat2resistance<1Ω- Ifresistanceisinfinity,replacethermostat2.

• Heaterresistance10Ω- Ifresistanceisinfinity,replaceHeater.

THERMOSTAT 2

THERMOSTAT 3HEATER

• Measureresistanceofthefollowingterminal1. Doorswitchknob:open

Terminal:“COM”-“NC”(1-3)<1Ω Terminal:“COM”-“NO”(1-2):∞Ω

2. Doorswitchpush:On Terminal:“COM”-“NC”(1-3):∞Ω Terminal:“COM”-“NO”(1-2)<1Ω

Door S/W

125V/10A

• BeltCut-offS/W- Leveropen:Resistancevalue<1Ω- Leverpush:Resistancevalue∞Ω

Beltcut-offS/W

125V,15A

• Whenvoltage(DC10V)islinked,Lampconfirmsthatislightedup.

DC12V

• Motor(Electronic&GAS) Contacts ( :Contactclosed)

Function 1M 2M 3M 5M 6M

Start

Run


Centrifugal Switch (Motor)

GAS MODEL

Radiant Sensor(10RS)• Resistancevalue<1Ω• Ifresistanceisinfinite,replaceRadiantsensor

120V

Igniter(101D)• Resistancevalue40~400Ω• Ifresistanceisinfinite,replaceIgniter

120V4.5A

Gas Valve(25M01A)• Valve1-2:Resistancevalue1.2KΩ• Valve1-3:Resistancevalue0.5KΩ• Valve4-5:Resistancevalue1.2KΩ• Ifresistanceisinfinity,replaceValve

120V60Hz,120A

Thermostat (60T21 Hi-Limit)230f-50f• Resistancevalue<1Ω• Ifresistanceisinfinity,replaceThermostat

120V20A(60T2)

2.88Ωbetween Pin# 3 and 4

3.5Ωbetween Pin# 4 and 5


Sensor Bars & temperature sensor check

Sensor BarsDisconnectharnessandtestPinkwirePin4toOrangewirePin5.• Approx∞Ωwithoutlaundry• Approx190Ω±10%withwetclothes

Cycling thermistorDisconnectharnessandtestBluewirePin3toRedwirePin6.• Approx10KΩat25°C/77°F

CN6

6 1

4-1. ERROR ITEMS AND DIAGNOSTIC CODES - … for error code 3 (See Table for code definition). •...

Documents

Transcript of 4-1. ERROR ITEMS AND DIAGNOSTIC CODES - … for error code 3 (See Table for code definition). •...