Jura S8 - Jura s8 water in coffeeground container

Amo · 25. Dezember 2025, 12:10

Hersteller: Jura | Typ-/Modell: S8 | ca. Baujahr: 2017

hi all,

I am working on a jura S8.
Rebuild the brewunit and cleaned inside and out.
While making a cup of coffee the coffee pucks are nice and round. Also dry coffee pucks.
But after the machine cleanes (while turning off) or after a few minutes not using.. the machine throws water in the coffee ground container.. what makes the coffeepucks watery.

Its not the steppermotor, that one is working.. als the drainageventil is oke.. someone an idea where to look?

Thanx

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

Amo · 25. Dezember 2025, 12:20

Before turning machine off foto

After turning coffee machine off foto

S9_2004 · 25. Dezember 2025, 13:56

That's normal, a little bit water allways comes...

Amo · 25. Dezember 2025, 14:52

After a few cups its a puddle of coffee.. i dont have that with my other machine, its pretty dry

BlackSheep · 25. Dezember 2025, 16:15

For one cleaning it is a huge amount of water.
Try to find out in wich way and at which moment of the cleaning the water drops into the ground container.

Amo · 25. Dezember 2025, 19:19

it happens at the moment the brewgroup is returning to its start position, when its at hoghest point. Its comming from that mushroom thing :-D.
I opend the brewunit.. but cannot find anything weird.

BlackSheep · 25. Dezember 2025, 20:00

Try to make a YouTube video of this and post here the link.
The video should also show the draining.

Amo · 25. Dezember 2025, 20:32

Cleaning process here.
even when i start it, with empty container, i find wter in the container when its ready.

I think tommorow i am going to dismantle the whole brewunit again.

Amo · 26. Dezember 2025, 14:19

I rebuilding the brewunit again and it didnt do anything.
Just tried a Jura E8 and that container stay dry after cleaning.

I am out of options, because everything is oke, drainage ventil, drainage motor works, brewunit goes up and down smooth and fast. Also if it finishes cleaning, it doest the last squeez and pushes last water out.

BlackSheep · 26. Dezember 2025, 14:53

At the video, all you can see is quite normal - there ist not too much water dripping down.
What I don’t understand: The picture „after“ shown much more water in the container than in the video dripped down…

Amo · 27. Dezember 2025, 10:27

difference is..

Foto is when i turned the machine off..
And the video is when i manually start the rinse program.

BlackSheep · 27. Dezember 2025, 11:46

May be - in the video all you can see is quite normal.

Jura S8 - Jura s8 water in coffeeground container

Jura S8 - Jura s8 water in coffeeground container

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