Question about Jura Capresso Impressa S9 Coffee Maker/Espresso Machine

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EMPTY GROUNDS warning will not reset

I have an IMPRESSA S9 Avantgarde machine and have used it without problems for just over a year. Recently I have been having trouble with the machine after I empty the coffee grounds. The "EMPTY GROUNDS" warning will remain on after I clean the tray and replace it in the machine. The only way to reset the EMPTY GROUNDS warning is to leave the tray out of the machine up to 10 minutes. Please help with a reason for this and a solution. Thank you.

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  • maz29 Aug 01, 2008

    I have the same chronic problem with an S7 Avantgarde machine. I have tried scrubbing the tray & contacts clean (at the advice of the Capresso phone line support) and completely cleaned the area inside the machine around the tray of any stray grounds. The result is completely intermittant and almost every time I have to empty the grounds tray results in at least 5-10 minutes of figgling to get the 'empty grounds' message to go away.

    Personally I don't know if I buy the message from the customer support line that the tray contacts are what senses when the spent grounds cup needs emptying. Those contacts are clearly linked to the side of the tray where excess water and coffee drippings are collected and seem to be meant for sensing when the tray is full of water, not spent grounds. However, I cannot find another sensor and the support line has been useless in offering any other suggestions than 'rinse the tray thoroughly' or 'clean the contacts on the tray'

    If anyone has found a permanent solution to this problem, please post. Thanks!


  • Anonymous Dec 25, 2008

    I have the same problem. It started with the 'tray missing' warning and then evolved to the 'empy grounds' message. Waiting seems to help as I can't find another sensor anywhere either.

  • TommyTukker Apr 10, 2009

    I have the same problem with an Impressa Z 5, but we have to leave the tray out overnight. I have cleand the tray contacts at the back but this is not the problem. The problem seems to be internal.

  • Anonymous May 10, 2009

    same problem here - "Empty Grounds" will not reset. The only "fix" I have found is empty tray when system is on. turn off system by either unplugging or back power switch. power back on. system displays, "tray missing" - push tray back in. should reset. (kind of silly to have this common problem on a machine of this cost)

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The solution was referenced in one of the earlier postings but I wanted to clarify in case people are misunderstanding. The two metal contacts at the back of the machine insert into the wall of the machine and tell the coffee maker that the tray is inserted. Sometimes the big, flat, readily visible portion of these contacts get dirty and I think people are focusing on this portion of the contacts. However, the metal contacts also bend down into the tray where they can detect water (basically if there is enough water or material to conduct between the two contacts then the machine tells you to empty the try). This is the portion where you need to focus on cleaning, down in the tray, between the narrow plastic valley at the back of the tray. It will require Q-tips or something to really push down into the tray to clean away from the contacts. I did not have water in the tray but had enough moist old coffee grounds that it was causing the issue. I cleaned this area with water, a toothbrush and Q-tips and ensured it was very clean and dry. I have not seen the issue again in months (my coffee maker is three years old, gets used daily and we keep it relatively clean, but this is the first time we've gotten this error).

Posted on Jun 26, 2010

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The tray metal contacts are just for water level in drip tray.
You need to ensure the rubber gate on the grounds tray is inserted correctly.
Also you need to look inside the machine where tray goes and ensure the waste outlet is clean as it can build up with grounds.

Posted on Feb 05, 2011

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Just want to add another kudos for those who pointed out the importance of cleaning the area where the metal contacts bend down into the tray. I spent half an hour cleaning/buffing/drying/sanding the contact tips on the tray as well as the female receptacle inside the machine before stumbling onto that suggestion.

The area between the contacts on the tray, where they bend at a 90 degree on the back of the tray, was not even visibly dirty or scummy, but nonetheless I scrubbed it with a toothbrush, steel wool, and a lot of hot water and the problem was fixed.

Posted on Dec 17, 2011

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S9 Owner for years, had every problem conceivable, returned many times for service. Contact cleaning, tray cleaning, area around and under tray cleaning inside all work, but the problem will always grow gradually worse. The empty grounds problem was finally resolved to be in the chute to the upper left where the used grounds come down and out. The access is difficult, you have to tilt on 45 deg and use a flashlight. With a tool or finger and napkin you have to get up in there and get the built-up grounds out! Those grounds collect over time, get caked and dried. You have got to go in and get it all cleared out. Or, return for service and they will do the cleaning for you. Good machine, a real firend, but it is complex and becomes grumpy.

Posted on Apr 03, 2011

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I have been having this same problem for a while. it has progressively got worse and harder to clear. I had spoken with Cappresso numerous times and I was about to give up and send my machine in for repair.
Looking at the contacts on the tray, I noticed that they bend down into the tray along a very narrow trough. They were very dirty at that point. I used a old toothbrush with soap and scrubbed the contacts and the trough clean. My problem was eliminated.

Posted on Dec 07, 2008

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We have the same problem. Several times we've taken a cotton swab to clean up inside the machine where the grounds come out. This helped a few times, but not all. The waiting may work, and we will try that out. Any ideas on how to prevent this (i.e. cleaning or servicing would really help.)

Posted on May 26, 2008

  • gerenr Jul 28, 2016

    Thanks for explanation re contacts. I cleaned the parts extending into the tray and it worked!!

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I called Capresso and they suggest running cold water over the two contact prongs at the back of the machine for 20 seconds, then replacing. This works about 75% of the time... but is irritating. I also cleaned the contacts but this didn't have any effect.

Posted on Sep 09, 2009

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Ours did the same, I think it was a build up of damp grinds on the contacts in the back of the tray cavity

Posted on Mar 07, 2008

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