Samsung WW90M6 - Page 36

34 _ Troubleshooting
Information
Type
Infor-
mation
Code
Causes Corrective Actions Description of Photo
WaterSupply
4C
4C2
• Watersupplyvaluefault
• MainPCBfault
• Freezinginthewinterseason
Checkthewatersupplyvalve
whetheronlycoldmodelor
hotandcoldmodelIncorrect
connection can occur an error
• Ifthewatersupplyvalvehasa
wiredisconnected,replaceit.
• Checkwhetherthewatersupply
valveiscloggedwithforeign
materialandwhetherwateris
suppliedcontinually.
• Checkwhethernowateris
suppliedbecauseoffreezingin
thewinterseason.
• IfthePBArelayoperates
abnormally,replacethePBA.
1. Checktheresistanceforthewatersupplyvalve.
 Resistance:3.6to4.4kΩbetweentwoterminals
ofeachsolenoid.
2. Checkwhetherthereisforeignmaterialatthe
inletlterofwatersupplyvalve.
Drain 5C
• Drainpumpfault
• Freezinginthewinterseason
• Foreignmaterialsinthedrain
pump
• MainPCBfault
• Checkwhethertherevolutions
ofthedrainpumpmotorare
restrainedbyforeignmaterial.
• Checkthesamethingforthe
naturaldrainprocess.
• Checkwhethertheconnections
arecorrectandifthereisany
wiresdisconnected.
• Ifthedrainpumpoperates
abnormallyintermittentlywhenthe
temperatureofthewaterinthetub
ishigh.
• Ifthemotorrevolutionsare
restrainedduetofreezinginthe
winterseason,checkthemethod
toremovethefreezingand
removeasdirected.
► DRAINPUMP
 Resistance:Approximately182to222Ωbetween
theTerminalsforthePumpMotor
Communication
AC
• Thesignalsbetweenthe
subandmainPBAsarenot
sensed.
• IncorrectwireConnections
betweentheSubandMain
PBAs.
• Checkthewireconnectionsand
terminalcontactsbetweenthesub
andmainPBAs.
• Checkfordisconnectedwires.
• CheckwhetherthesubPBA
isshort-circuitedbecauseof
moisture.
• IfthemainPBA’scommunication
circuitisfaulty,replaceit.
-
AC6
• Thesignalsbetweenthemain
andInverterPBAsarenot
sensed.
• IncorrectwireConnections
betweenthemainandinverter
PBAs.
• Checkthewireconnectionsand
terminalcontactsbetweenthe
mainandinverterPBAs.
• Checkfordisconnectedwires.
• IfthemainorInverterPBA’s
communicationcircuitisfaulty,
replaceit.
-
AC2
• ThediagnosisoftheI/OBoard
communication error.
• Checkthewireconnectionsand
terminalcontactsbetweenthesub
andmainPBAs.
• Checkfordisconnectedwires.
• CheckwhetherthesubPBA
isshort-circuitedbecauseof
moisture.
• IfthemainPBA’scommunication
circuitisfaulty,replaceit.
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WW22N6850NX-A2_SM.indb 34 2018/2/1 17:15:50