I HAVE A JURA CAPRESSO ENA 5 AND WHEN I DO THE DESCALE CYCLE IT WILL NOT FINISH THE FINAL DESCALING STEP . IT JUST KEEPS SAYING "DESCALING" AND WILL NOT FINISH. UNPLUGGING DID NOT WORK

Fortunately the problem you describe is not model specific. All Jura machines in the series C, E, F, J, S & Z models have the same problem. The Jura recommended maintenance is insufficient or erroneous. Here is how it occurs:
1- When new machine is set up, the instructions advice the owner to set up OK for use of Filter cartridges. This set helps only to display reminders for replacing the filter.
2- The initial set up instruction also advises that with regular use of Filter, descaling the machine will not be needed. That is really not accurate. Consequently, the reminders for descaling are delayed for over one year or more. This causes serious consequence with accumulation of Calcium deposits in the entire hydraulic and coffee system.
3- Use of Filters alone does not prevent Calcium deposits. Cleaning tables recommended & sold by Jura do not remove Calcium deposits in the coffee/water passages. The automatic descaling method recommended by Jura leaves the coffee side of the machine unclean. The error message in your machine is due to Calcium deposits in the Brew group, coffee outlet & the faucet dispensing coffee in the cup. I suggest all Jura machine owners should manually descale machine. Manually descaling includes use of 6 to 10 rinse cycles with descaling solution in the water tank. The error message "Clean Machine" is accurate. This error message is pointing to descale the Brew group, coffee outlet tube and coffee dispensing faucet by using rinse cycles.

After the rinse cycles are complete, refill Descaling solution in the water tank & continue descaling the rest of the machine by using hot water dispensing function, ½ cup at a time until the tank is empty. Finally, give a final flushing of machine to flush out remaining descaling solution inside the machine.
Services Unlimited Inc Parts Guru Since 1988

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/edward_bbd2c7ff4ee1828a

All Jura machines in the series C, E, F, J, S & Z models have the same problem. The Jura recommended maintenance is insufficient or erroneous:
1- When new machine is set up, the owners click OK for use of Filter cartridges. This helps only to display reminders for replacing the filter.
2- The instruction also advises, regular use of Filters, eliminates descaling the machine. That is not accurate. Reminders for descaling are delayed or eliminated. This allows accumulation of Calcium deposits in the entire hydraulic and coffee system.
3- Cleaning tables recommended & sold by Jura do not remove Calcium deposits in the coffee/water passages. The automatic descaling method recommended by Jura also leaves the coffee side of the machine unclean. The error message in your machine is due to Calcium deposits in the Brew group, coffee outlet & the faucet dispensing coffee in the cup. I suggest all Jura machine owners should manually descale machine. Manually descaling includes use of 6 to 10 rinse cycles with descaling solution in the water tank. The error message "Clean Machine" is accurate & pointing to descaling the Brew group, coffee outlet tube and coffee dispensing faucet by using rinse cycles.

After the rinse cycles are complete, refill Descaling solution & continue descaling the rest of the machine using hot water dispensing function, until the tank is empty. Finally, give a final flushing of machine to flush out remaining descaling solution inside the machine.
Services Unlimited Inc Parts Guru Since 1988

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/edward_bbd2c7ff4ee1828a

Error 5 is pointing to heating problem. Here are the parts that may be malfunctioning:
1- Thermal sensor not registering heating. Replace it.
2- Heater not heating up. Check continuity on heating element. If there is no continuity, (This is rare). Replace heater (Thermo block).
The problem can be linked to:
1- Missed descaling of machine for extended period.
2- Use of automatic descaling method suggested by Jura. Descale the machine every three months using Manual descaling method.. Services Unlimited Inc Parts Guru Since 1988

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/edward_bbd2c7ff4ee1828a

At the time of set up, Jura instructions ask activating the use of Filter cartridges. This eliminates reminders for descaling.
Solution:
Throw away the filter cartridges that are expensive, ineffective & block descaling reminders.
Descale the machine every three months using manual descaling method. See link for instructions. Services Unlimited Inc Parts Guru Since 1988

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/edward_bbd2c7ff4ee1828a

all the instruction manuals are on the jura website, capresso.com, you can download the one you need and all instructions are there.

Hi, I made a video how to fix your Jura step by step, good luck... http://fixandparts.wix.com/nicknicoloudis#!jura-coffee-machine/c15gy

Hi, I made a video how to fix your Jura step by step, good luck... http://fixandparts.wix.com/nicknicoloudis#!jura-coffee-machine/c15gy

Hi, I made a video how to fix your Jura step by step, good luck... http://fixandparts.wix.com/nicknicoloudis#!jura-coffee-machine/c15gy

call the 'Coffee Boss"  in North carolina.  you will have to find him on Google. his name is heinz and he is the guy that Jura uses when they can't fix it.  He's fixed my x90 3 times.  
good luck