40 _ Troubleshooting
Error Type Error Mode Causes Corrective Actions Description of Photo
WaterSupply
Error
4E
4E1
4E2
• Watersupplyvaluefault
• MainPCBfault
• Freezinginthewinterseason
• Ifthewatersupplyvalvehasawire
disconnected,replaceit.
• Checkwhetherthewatersupplyvalveis
cloggedwithforeignmaterialandwhether
waterissuppliedcontinually.
• Checkwhethernowaterissuppliedbecause
offreezinginthewinterseason.
• IfthePBArelayoperatesabnormally,replace
thePBA.
1. Checktheresistanceforthe
watersupplyvalve.
- Resistance:4.0to5.0Ω
betweentheterminalsofthe
watersupplyvalve.
2. Checkwhetherthereis
foreignmaterialinthewater
supplyvalvediaphragm.
Drain Error 5E
• Drainpumpfault
• Freezinginthewinterseason
• Foreignmaterialsinthedrain
pump
• MainPCBfault
• Checkwhethertherevolutionsofthedrain
pumpmotorarerestrainedbyforeignmaterial.
• Checkthesamethingforthenaturaldrain
process.
• Checkwhethertheconnectionsarecorrect
andifthereisanywiresdisconnected.
• Ifthedrainpumpoperatesabnormally
intermittentlywhenthetemperatureofthe
waterinthetubishigh.
• Ifthemotorrevolutionsarerestraineddue
tofreezinginthewinterseason,checkthe
methodtoremovethefreezingandremoveas
directed.
► DRAINMOTOR
Resistance:Approximately
6.3ΩbetweentheTerminals
fortheWaterSupplyValve
► DRAINPUMP
Resistance:Approximately
174ΩbetweentheTerminals
fortheWaterSupplyValve
Communication
Error
AE
• Thesignalsbetweenthesuband
mainPBAsarenotsensed.
• Incorrectwireconnections
betweenthesubandmainPBAs.
• Checkthewireconnectionsandterminal
contactsbetweenthesubandmainPBAs.
• Checkfordisconnectedwires.
• CheckwhetherthesubPBAisshort-circuited
becauseofmoisture.
• IfthemainPBA’scommunicationcircuitis
faulty,replaceit.
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