Question about Jura Capresso Impressa S90 Espresso Machine

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Malfunction 8 Hi, I was given a disassembled S90, which had just been cleaned.  I rebuilt it and turned it on...the mechanism is getting bound up moving up and down, and it sounds like the motor is timing out or stalling out.  Display reads malfunction 8.  Then it locks up - I have to unplug it to attempt to power on again.  I've realigned the moving mechanism best I can, but... please help root cause this. thanks.

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  • Anonymous Jan 24, 2008

    same problem.

    who knows how to fix it???

  • Anonymous Apr 21, 2008

    Got E75 about 4 yrs old and it frequently does this now.

    Also the grindr doesn't seem to work anymore - it whirls around but doesn;t grind much coffee. I had this happen to the first one (which they replaced under warrenty after about 3 months) - they said the grinder was stripped!!! All I had done was use some darker beans. these thibgs are a piece of **** - they will only do VERY light beans and I'm ready to chuck my one out. I've had it serviced a number of times for about $100 each and a few weeks without(that's the worst!). Sounds like thier most recent machines are the same.

  • reshelman Aug 16, 2008

    I have Jura E8 and got the malfunction 8 problem - for me it was because it couldn't **** the water out. I had attempted to install the water filter but didn't reprogram it. I took out the filter and that cleared the error - after power down/up.

    anyone located a service manual for Capresso's? Evidently they have really been successful at not letting them get out, but certainly a tech somewhere could scan and upload one.

  • deeregirl May 03, 2009

    Have the same problem. Jura S9, 7.5 years old. First appeared some time last fall, and the manual said take off power and then turn back on. Worked fine back then. Now I had to clean it and it's all stuck. Had trouble getting the tray out. Something is totally stuck and I have no idea how to fix it myself. I took the grounds-box out of the tray to be able to put it back in, because some part of the machine is in the way when I try to get the tray back in WITH the grounds-box. Any help is deeply appreciated as the next service point is is about 200 miles away from here :o(

  • Johann
    Johann Mar 11, 2014

    Same problem here. After 2-3 cups of coffee it shows Malfunction-8.

  • Johann
    Johann Mar 11, 2014

    Same problem here, it shows Malfunction -8 after 2-3 cups of coffee.

  • Johann
    Johann Mar 11, 2014

    Since we know the problem and only two of us use it, I don't bother to repair it or lubricate it. After I read a complete disassembly and partial lubricating jobs, I wonder anyone would have a copy of the electrical circuit diagram? I believe it is not an individual machine problem, maybe it is a design flaw to start with. Keep lubricate O-ring is not a solution to solve the problem. How about increase current limiting motor torque by say 10%, or change software routine?



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Short answer: You need to lubricate the plunger mechanisms in the brew unit. 
Long answer: There are two rubber o-rings - one in the base of the brew unit and on the plunger that descends into this to form a seal. There are great instructions on how to take apart, clean and lubricate the brew unit here:

...but they are not for the faint hearted.
There is also a cheats way too which I use. 
First, get some SILICONE lubricant. It needs to be Silicone. You can get it from ACE for $3. 
Remove the door / funnel mechanism from the powder inlet - it just lifts out. 
Usign a flashlight, take a look inside where the coffee grind goes. You will see a cylinder with a plunger mechanism at the bottom. You need to lubricate the ring on the bottom plunger and the tope one (which you cant see this way). 
Use the flashlight and a knitting needle and place some silicone at the base of the plunger - you will see what I mean when you look inside with the flashlight. Also put some around the top lip of the cylinder (for the upper plunger). It is sticky and messy.
Press the "rinse" button. 
You can do this a few times. The silicone will not affect the taste of your coffee. I tend to put a liberal amount in and then wipe off the excess with a kitchen towel on the end of the knitting needle. 
This is fiddly, but it works. I do this in between complete disassembly, which I do about once per year using the above instructions. If you need to replace the o-rings, you should be able to find suitable replacements at a local hardware store but this is a trial-and-error process, I'm afraid. I have never ordered the ones linked to on that page.
Hope this helps.
Now, if only I could work out how to fix the leak from the rear....
Rgds, John

Posted on May 23, 2009

  • tammytoriana
    tammytoriana Nov 16, 2012

    Great instructions, the best I've ever seen


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Same problem here also.
Any body got the order of pulling one of these things to bits. I want to have a look at the works. We have sent our S9 away about 4 times to get this fixed - 2 new brew units, 2 'O' ring replacements. It works for about 4 to 6 months after we get it back then starts taking longer to dump then binds up and shows an error 8. Turn the power off for awhile, resart and it works again for a couple of cups. I've taken the top off, looks like a need a 3mm socket for the 2 fixings on the lower back.

Posted on Mar 08, 2008


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Malfunction 8

I just fixed it. I saw some info from a Doctor in Hawaii who described reaching up inside the machine with some success and this inspired me (Thanks!). I had been getting Malfunction 8 for some time, and letting the machine cool (turning it off) for 15 minutes was the only way to not get the error. It always sounded like it was "straining" to make coffee. It would generally try 3 times to clear itself before the Malfunction 8, I'm sure those with the problem will recognize the symptoms. All the rinse/ decalcify/on/off stuff was temporary. We lived with this for 5 months or so. Finally, it would only get a Malfunction 8, and so became unusable, and we were considering sending it in for repair. This was the second round of Malfunction 8 problems; the first seemed to fix itself for an unknown reason. On to the fix: Unplug, remove the water tank, pull out the bucket and tray, and allow to cool if necessary. Now - smaller fingers are better - reach into the machine, palm up. Feel as far back as you can, then work your way forward, toward yourself. As you move toward you will feel a flat area about an inch wide (measuring front to back). Just back of this (away from yourself), you'll feel a crack about 3/8" to 1/2" wide. Push your fingers up into this area and feel around. You will probably feel stuff that feels like light, chunky rocks. Break these up and they should fall out. Again, small fingers are better and once I got an idea of what I was doing, I described it to my wife and she did it. There is a tendency to not feel far enough back in the machine, so be sure to find the flat place at the lowest point of the mechanism then go just past it and up to find the crack. Pulled out about five crusty chunks of burned, almost charcoal like compressed coffee. I also got about a foot of plumber's tape (the metal stuff with holes in it that's useful for just about everything) bent it with a 4" radius, and worked it up into the crack to break up any stuff we couldn't reach. Work at this until no more stuff is in there. Now, tilt the machine toward you and "pat" firmly all over to jog anything left into the crack area, and check for chuncks again. When that's done, put everything back together, move the machine to where you can work from the top. Don't start it up. Get a flashlight and a wooden spoon. Open the top "pre-ground" door and peer in. With the wooden spoon handle, poke in there and tap everything to break up any stuck things. I thought a shopvac with a small tube might work here, too, but wasn't sure whether something bad might happen. Anyway, tap tap tap about 100 times. Now start up the machine. Keep peering in; watch how the mechanism works, and don't trap the spoon handle! Now, try to brew some coffee. While it's actually squeezing out the coffee, tap some more on the "closed" mechanism to free up any more stuck coffee. Do this whole procedure 3-4 times to be sure, but don't drink any of the coffee it brews: The first ejected puck looked really aweful - it looked like about 1/3 moldy coffee; of course the machine had been sitting for 3 weeks, probably stuck in the middle of a puck ejection cycle. Anyway, the machine should run good as new. Good luck and please comment as to whether it works for you. - Woody

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Anyone located a service manual for Capresso's?

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