Krups EF 472 - Troubleshooting; Problem Diagnosis Checklist

ServiceManualEF472
14
T R O U B L E S H O O T I N G
4 T R O U B L E S H O O T I N G
4.1 Checklist
With an acceptance
check in accord-
ance with this checklist,
errors are quickly found
and corrected with the
appropriate measure.
Therefore, adhere to the
sequence of the check
list.
Repair every occurring
error and work the check
list until it is completed.
Check Errorsymptoms
Measure/
repairwork
Furthermeasures/repair
work
1Checkthecoffee
machineforvisi
bledamage
1.1Housingpartsbro
kenordamaged
YESreplacehousingpartsif
necessary
NOcontinuewithpoint1.2
1.2Mainscabledam
aged
YESreplacethemainscable
NOconnectthecablefrom
machinetothemainsandcon
tinuewithpoint2.1
2Checkmechani
calcomponents
2.1Whenthecoffee
machineis
switchedoff,the
cuptrayremainsin
theverticalposition
YEScontinuewithpoint2.2
NOcheckifthecapsulecon
tainerandthecuptrayarecor
rectlyinsertedandmounted
YESreplacedamagedor
deformedcuptray
2.2Closinghandle
functions
YEScontinuewithpoint2.3
NOitisverydifficultoralmost
impossibletoclosethehandle
andtopressitallthewaydown
YESreplacethecompact
brewingunit
2.3Thecapsuleis
ejectedcorrectly
YEScontinuewithpoint2.4
NOreplacecompactbrewing
unit
2.4Sealonthecapsule
cageisdamaged
(checksealwith
yourfinger)
YESreplacethecompact
brewingunit
NOcontinuewithpoint3
3Fillwatertank 3.1Watertankleaks
YESreplacewatertank
NOcontinuewithpoint4
4ActivatetheOn
Offswitchtoper
formtheauto
maticselftest.
4.1Cuptrayfoldsdown
YEScontinuewithpoint4.2
NOlockingmechanismworksYESreplacedamagedor
deformedcuptray
NOreplacelockingmecha
nism
4.2Thecoffeemachine
isnotworking
(doesnotfunction)
YESa)mainscableisokay YEScontinuewithpointb)
NOreplacemainscable
YESb)onoffswitchisokay YEScontinuewithpointc)
NOreplaceonoffswitch
YESc)pumpworks(pressa
coffeebutton)
YEScontinuewithpointf)
NOcontinuewithpointd)
YESd)bothcoffeebuttons
areworking
YEScontinuewithpointe)
NOreplacetheentireelec
tronics
YESe)finewirefuse(128°C)
onthepumpisdefective
YESreplacefinewirefuse
NOreplacepump
YESf)finewirefuse(s)
(167°C)onthethermoblock
defective
YESreplaceentire
electronics,ifnecessary,even
replacethermoblock
NOcontinuewithpointg)