I have a Jura Capresso S9 Avantegarde. It has been working well. The normal shutoff time is one hour after the last use. This morning, I found the machine on. The power button was still red, but the cup illumination light was on and the grinder was running. I have unplugged and let sit, but when I plug back in the grinder will start to run and the cup light comes on. It will grind all the coffee and keep running. Suggestions?
Faulty switch mate
SOURCE: Jura Capresso Impressa S9- no steam
I had a similar problem. I took off the side and rear cover, followed the hose that comes from the steam wand to the rear of hte unit. It enters a solenoid made by ACL Italy. I dismantled the solenoid unit by disconnecting the two hose ends, removing the relay, and unscrewing the plunger unit (vertical pipe). The plunger unit internals should move freely up and down like a piston in a cylinder , powered by a small spring. In my unit, this plunger was calcified and seized. I soaked it in boiling water and pressed on it gently several times and it unstuck. I put it all back together again and presto! Good luck
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