Jura Capresso Impressa F9 'malfunction 8' fit without dismantle

its a brewer fault or brew motor.

Likely cause of this is a blocked worm drive. The worm drive takes the coffee in and then, after brewing, ejects the used grounds into the Dump box. Over time, coffee grounds accumulate on the worm drive and eventually jam it. This is Malfunction 8. Machine will need to be stripped and cleaned. Hope this helps.

Malfunction 8 is related to the brew unit typically. It is usually an indication of the brew unit motor having to work too hard to move the brew unit up and down. This is usually cured by disassembling, cleaning, replacing any o'rings that may be bad, and lubricating the unit, then reassembly.
I have had to do this twice on an an E75 and an E8. I finally broke down and bought seal kits and food grade lubricant for doing this. (I have only been able to buy parts from Europe online) One could by a new brew unit off of e-bay and change out the whole thing. But a simple cleaning or rebuild will typically suffice. One note. The cleaning tablets tend to strip the lubricant from the inside of the brew unit over time. Ocassionaly the seals in the brew unit will fall apart and bind up the unit. Either of these is usually accompanied by a sound of the brew unit motor straining to cycle the machine. If you are not savy in repairing it you may want to send it in. I suspect they will tell you it needs a new brew unit aand quote about $300 USD for the repair. About two hours, much patience, and about $10 in parts is most likely all it may need.

Mike

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

Malfunction 8 is related to the brew unit typically. It is usually an indication of the brew unit motor having to work too hard to move the brew unit up and down. This is usually cured by disassembling, cleaning, replacing any o'rings that may be bad, and lubricating the unit, then reassembly.
I have had to do this twice on an an E75 and an E8. I finally broke down and bought seal kits and lubricant for doing this. One could by a new brew unit off of e-bay and change out the whole thing. But a simple rebuild will typically suffice.

Mike