Samsung WF448AAP/XAA - Page 30

28 _ Troubleshooting
Error Type
Error Mode
Causes Corrective Actions Description of Photo
LED LCD
WaterSupply Error
nF
Low W a ter Pressure
ERROR!
• Watersupplyvaluefault • MainPCBfault • Freezinginthewinter
season
• 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:1.0to2.0kΩ
betweentheterminalsofthe watersupplyvalve.
2. Checkwhetherthereis
foreignmaterialinthewater supplyvalvelter.
3. Ifthewatersupplyvalvelter
isclogged,cleanlter.
Drain Error nd
No Draining
ERROR!
• Freezinginthewinter
season
• Foreignmaterialsinthe
drainpump
• Poorphysicalconnection • Drainpumpfault • MainPCBfault
• Ifthedrainpumprevolutionsare
restrainedduetofreezinginthewinter season,checkthemethodtoremove thefreezingandremoveasdirected.
• Checkwhethertherevolutionsof
thedrainpumpmotorarerestrained byforeignmaterial,andremoveas directed.
• CheckthewireconnectorsonMain
PCBandDrainPumpASSY.The connectororwiremayhavepoor physicalconnection.
• Checkthedrainpumpresistance.
Checkthedrainpump resistance. (Resistance20°C:14.2ohm ±7%)
Communication Error
AE
Electronic Control Problem
ERROR!
• 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.
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