How to Fix Jura S7, S8, S9, S90, S95, X90, X95 malfunction 8 error

***Always disconnect the power cord before working on the machine***
There are few other reasons if your Jura Impressa S9 or similar models start having malfunction 8 error. In my case my coffee machine was just making loud clicking noises and then malfunction 8 error was appearing. After checking all the components I noticed my power supply wasn't giving enough power to PCB. I managed to get similar power supply and once again machine is back to life.
One of the common reason for malfunction 8 is due to the faulty brew unit in that case you need to get access to brew unit and service or replace it.

[@kef103]

If I wanted to switch from 220 to 120 transformer this is all I’d have to change right? Nothing else runs off the mains

[@TheBlt55]

Great video! I replaced my power supply and it fixed my problem at first. I had to fix a couple water leaks and when I fixed my brew group and replaced the leaking boiler. I put it back together and got the mal 8 and clicking again. Where did you check the voltage to verify that the power supply was bad? Did you find any good wiring diagrams for the machine?

[@licysaab]

Did you renew the two big O-rings in the brew unit? it's the most common reason for Error 8.

[@svennyberg8393]

I loved your video and have enjoyed our Jura for years. Where can you get the transformer? Thanks

[@itsmesikander]

Thanks, Try it on ebay Germany.

[@itsmesikander]

Or find same voltage power supply on ebay or local store.

[@licysaab]

I have experience of the brew unit move unsmoothly, I cleaned all the contact pins on the transformer and it work again

[@cliveeckett7238]

Do you have instructions how to reassemble an S9 ceramic switch?

[@unbelievable1983]

Thanks for the upload.I have Jura impressa XS95 and from some time it powers on, only occasionally. When I press the power button, it powers on for 1 or 2 seconds, and then switches back off again. I noticed this issue started occurring after one of circuit brakers popped in my house. Is there any fuse inside the Jura that I could check first, before replacing the power supply?Or there might be something else? Any help will be appreciated.

[@itsmesikander]

Hi, Possibly it could be same power supply. Check for any water leak on any of the components even a single drop can short circuit and turn it off.

[@unbelievable1983]

@@itsmesikander Thanks for the reply. There does not seem to be any leaks but will need to test the PSU in this case. Thanks again

[@davesays]

Was there a small heat shield/foil piece? If so, do you remember where and how it was positioned?

[@capodelmafia]

Can you tell me what part is on the right side where is the yellow sticker,that on the top of the ather side..mine exploded but the machine is still working...tank you

[@georgepitt9673]

i am thinking they would be the two relays that control the brewgroup motor direction JS1 12Vf part number The machine couldnt operate if they exploded lol They topically get water under them and the copper corrodes on the PCB emitting a green oxidation.. This will eventually cause the same symptoms as described in this video

[@capodelmafia]

@@georgepitt9673 after explozion the back was black,and the part wich exploded was like rapt in fine paper...

[@georgepitt9673]

@@capodelmafia that would be an electrolytic capacitor i would think not the relays under the yellow sticker in that video

[@janaybhido]

pls let me know my jura micro 9 always ask fill the beans and start grinding and ten stop, should i change the grinding system

[@seboklajoszsolt]

My friend has an old Impressa Scala. The driver motor works, but there is a kind of positioning promblem. When the brewing unit reaches the top position the motor does not stop it still forces to drive the unit further. The same thing happens at the bottom position. The filter capacitor seems to be demaged (the electronics still working though). Can it be the cause or is there something else? Could You help me with this issue?

[@licysaab]

It might be caused by the encoder located on the motor. control board seams did not receive the signal from the encoder.

[@ngks3573]

Hi Friend, could you let me know the power supply part number. Thank you

[@jontyhofer6106]

Hi friend. My pump will not stop running even when power is of. Do you know which relays or what the problem could be? Any help would be appreciated. The wife is not happy right now!!

[@licysaab]

replace the TRIAC or(and photo coupler)on the power board, There are several 3 legs transistors located at the right side of the pump. they control the heater, grinder, pump and etc.

[@golantv273]

Where to find and get the pwr supply

[@itsmesikander]

Ebay is the best place. If you are unable to find it on eBay. You can use same rating power adapter for it.

[@monicaten1]

How do you repair Error 9 on s9

[@emmataylor5858]

what is the power supply, transformer part number?

[@itsmesikander]

Jura Impressa S95 Transformer Transformer MS 4843 0023220

[@itsmesikander]

If you can't find you can alter 15v 1.6A adapter as well.

[@taylorhungerford6347]

I was a complete idiot and put whole bean coffee in the "ground coffee" bin in the front left. I know how the malfunction 8 message. Is there anyway for me to retrieve them? HELP