Krups EF 472 - Page 15

ServiceManualEF472
15
T R O U B L E S H O O T I N G
4Continuation
4.2Continuation
YESg)wiringisokay YESreplacetheentireelec
tronics
NOreplacedefectivecables
NOcontinuewithpoint4.3
4.3Capsulecontainer
isilluminated
YEScontinuewithpoint4.4
NOreplacemainboard
4.4Bothcoffeebuttons
areblinking3xfast
YESthermoblockishot YESreplaceNTCtempera
turesensor
NOreplacethermoblock
NOselftestok.
Continuewithpoint5
5Measurecoffee
temperaturedur
ingpreparation
(see"Measuring
thecoffeetem
perature"onpage
36)
5.1Nocoffee
YESa)watersystemisempty YESforfurtherprocedures,
see"Fillingthewatersystem"
onpage9
NOcontinuewiththepointb)
YESb)flowmeterblocked YEScleanorreplace
NOcontinuewithpointc)
YESc)pyramideplate
blocked
YESreplacethecompact
brewingunit
NOcontinuewithpointd)
YESd)coffeemachineiscal
cified
YESdescalecoffeemachine
(see"Descaling"onpage37)
NOcontinuewithpoint5.2
5.2Temperatureistoo
low(below83°C)
YESDescalecoffeemachine
(see"Descaling"onpage37)
NOcontinuewithpoint5.3
5.3Temperaturetoo
high(over89°C)
YESreplaceNTCtempera
turesensor
NOcontinuewithpoint6
6Checkforleakage
andmeasureflow
rate(see"Meas
ureflowrate"on
page32or"Pres
sureandleakage
checks"onpage
33)
6.1CBUleaks
YESreplacethecompact
brewingunit
NOcontinuewithpoint6.2
6.2Hoseconnections
leak
YESreplacedefectivehoses
andseals
NOcontinuewithpoint6.3
6.3Rateofflownotin
thestandardrange
YEScoffeemachineiscalci
fied
YESdescalecoffeemachine
(see"Descaling"onpage37)
NOreplacepump
NOnoerrorsfoundaccording
tochecklist
formoreinformationplease
contact NespressoService
Division
7
Descalecoffee
machine
(ifnecessary)
7.1Coffeemachineis
calcified
YESDescalecoffeemachine
(see"Descaling"onpage37)
NOcontinuewithpoint8
8Finalcleaning
(see"Dailymain
tenance,clean
ing"onpage39)
Endofchecklist
Check Errorsymptoms
Measure/
repairwork
Furthermeasures/repair
work