Jura S9 One Touch Impressa - Water goes direct to overflow pipe (no water output even in descale cycle)

Lifeisfun · 21. Februar 2023, 15:02

Hersteller: Jura | Typ-/Modell: S9 One Touch Impressa | ca. Baujahr: 2017

Got my hands on nice S9, cleaned it up, brew unit rebuild, but upon powering up and decalcification
all water (both how water and coffee) drains to the drip tray via the drain pipe on the left side of the brew group.
I presume the ceramic valve doesn't divert it properly or something is clogged?
Is there hidden testing menu like on Saeco machines?

Can someone give me a hint why?
Any help would be appreciated

Thanks

Mechanische Kenntnisse vorhanden: JA | Elektrische Kentnisse vorhanden: JA | Messgerät vorhanden: JA

BlackSheep · 21. Februar 2023, 17:56

Hello,

look here:
https://komtra.de/media/files/Jura-S-Serie-Wasserlaufplan-Zweikreis-One-Touch-A6551302050.pdf

If all water comes through "C", there should be a problem with the "elektrisches Keramikventil" "I".
It seems to stuck in the 4.th position - this is the basic-position of the valve.

And I will only here look further, what you did answer and not in all other boards...

BS

Lifeisfun · 21. Februar 2023, 17:56

Found the problem, the driver wheel pins inside shredded off the ceramic disc ...what a design

BlackSheep · 21. Februar 2023, 17:59

I´m shure thats the reason why it stucks in the basic-position.

Jura S9 One Touch Impressa - Water goes direct to overflow pipe (no water output even in descale cycle)

Jura S9 One Touch Impressa - Water goes direct to overflow pipe (no water output even in descale cycle)

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