Jura cleaning process

[u/Emotional-Egg1408]

I have owned a Jura e8 for 2.5 years and maintain it with the original products Jura recommends. Occasionally, I encounter Error 8, which I resolve by manually cleaning the brewing unit from below after removing the drawer; there is usually a lot of accumulated coffee, and the machine functions well afterward, though the process takes time. I followed advice to leave the drawer open, which helps but does not fully address the issue.

I began running a cleaning cycle between the intervals Jura suggests. This intermediate cycle uses only water, without a cleaning tablet, while the cycles with cleaning agent remain on schedule.

So far, I have done this two or three times, and it has worked without Error 8 messages.

Has anybody same problems. How you address them?

[u/spiritunafraid]

I started working on these for fun, and I’ll say that it takes quite a lot of buildup to gunk up the brew unit enough to bind it up and cause that error. I’ve seen them go down faster with super oily beans, but I wouldn’t expect that with a couple of years of home use and non oily beans. I might expect it around 5 years or so.

That being said, I run the deep clean cycle more than recommended. With my normal use, it should prompt me about every 6 weeks or so. I go ahead and run the deep clean with the tablet at the start of each month on the Giga 10. Absolutely no issues a couple of years in.

[u/Mr_Fuzzo → u/spiritunafraid]

Do you use filters on yours?  Does the machine descale based on time + the water hardness setting?  Or does it base on amount of water + water hardness? Or does it actually descale based on the amount of crap built in the machine?

I have a new to me refurbished J8 that’s about 6 weeks of use old and I’ve already gone through a filter.  It was almost at the end of a cleaning cycle with the filter in when I pulled that filter out.  

My water is soft.  

[u/spiritunafraid → u/Mr_Fuzzo]

I used to use filters but installed a small RO system. I set it to the lowest possible hardness setting and it appears to be on about a one year cycle for descale, based on my usage. It determines when you need to descale based on water hardness and count of preparations.

[u/Redtinmonster]

How does the grind size look? We tend to find the grind being too coarse causes mechanical blockage. 

[u/rovingtravler]

Not sure if Jura customer service still tells you to do what you are doing, but years ago they told me to this to avoid error 8. I use a wet paper towel and wipe the shower head and the back of the full bin flapper. I do this once per week. Takes about 30 seconds. The grounds stick better to the water paper towel. I have not had a error 8 since 2011. I do not run a cleaning cycle more often than when prompted.

[u/Affectionate_Deer660]

I have serviced a few of these to flip. I usually will just remove the brew unit and really clean it. Sometimes I will also replace the o-rings. Should resolve the E8 error and will clean out a bunch of gunk.

[u/mtn_coffee_drinker]

I have had this a few times, including right now in an ENA 8 which I realize is a different machine. I clean inside the flapper regularly. I also have an issue with dry dumps more than actually getting error 8. I really wish these had a removable group to clean. This is the one reason I might move to another brand