Nespresso Essenza C91 - Page 15

15
Troubleshooting
ServiceManualC91/D91 enVersion1.0
4PressOn/Offbuttontoperform
automaticselftest(continued)
4.2Backlightedcoffeebuttonblinksatirregular
intervals
YESCheckifthermoblockheatingelementisfunc
tional
YESReplaceNTC(seepage18)
NOReplacethe rmoblock(seepage19)
NOSelftestok.Gotopoint5
5Checkcoffeetemperaturewhile
preparingacoffee(seepage29)
5.1Nocoffeeatoutlet
YESa)Watersystemisempty
YESFillwatersystem(seepage10)
NOGotopointb)
YESb)Pyramidplateisclogged
YESReplaceTCBU(seepage 22)
NOGotopointc)
YESc)Machineisblockedbyscale YESDescalemachine(seepage36)
NOGotopoint5.2
5.2Temperatureistoolow(lessthan83°C)
YESDescalethemachine(seepage36)
NOGotopoint5.3
5.3Temperatureistoohigh(morethan89°C)
YESChangeNTC(seepage18)
NOGotopoint6
6Checkforleaksandcheckflow
rate(seepages25andfollowing)
6.1Leakageatextractionsystem
YESReplaceTCBU(seepage22)
NOGotopoint6.2
6.2Leakageattubesconnection
YESReplacedefectivetubeandseal
NOGotopoint6.3
6.3Flowrateoutofrange
YESMachineisscaled
YESDescalemachine(seepage36)
NOReplacepump
NONotroublefoundduringthecheckprocedure.
Contact Nespresso TechnicalCorrespondantfor
furtherdetailsinordertotakedecision
7Descalingprocess(ifneeded) 7.1Machinescaled
YESDescalemachine(seepage36)
NOGotopoint8
8Finalcleaning(seepage38)
Endofcheckprocedure
Checkprocedure Symptoms Action/repairwork Furtheraction/repairwork