How to replace thermoblock sensor? - Jura Capresso Impressa S9 Coffee Maker/Espresso Machine

To replace this part you will have to open the jura machine. I found this information out because I had the dreaded error 8 reading on my jura machine which stopped it from making coffee. To disassemble the jura coffee machine you'll need some special tools that I will talk about as I describe how to get to the sensor, make sure you get those tools or something similar.
The problem that you are having is the boiler is not heating properly (heating the water properly), so the taste of espresso will not be good. You need a high heating temperature to get good tasting espresso. This generally happens because the thermo sensor went bad and the electronic board is not sensing the proper heat because the thermo sensor went out.
1. Remove the drip tray
2. Remove the water tank
3. Remove the coffee cover and bean hopper cover (aroma cover)
4. Remove the cover for the pre-ground coffee shut
5. Now you will need to remove the cup warning plate that is stainless steel, it is fastened with 2 security screws. You'll need a Newelectronx t15 torx security screwdriver to take them out.
6. Now remove the top plate, there will be 5 screws fastening it down. Again use the Newelectronx t15 torx screwdriver to take them out. Pull it up to release.
7. On the rear end of the machine, you'll need to remove some weird oval head screws. The only place I could find the tool for this oval head screw was in the Newelectronx Coffee Tool Kit Set. Get the oval tool, which is different from the Newelectronx t15 torx bit and remove the next few screws. There are 2 screws - oval head, on the lower backside. Take off the rear back panel. On the left you'll find the mechanical parts.
8. On the boiler, which is the big metal part that is formed like an upside down tear drop. The thermo sensor is attached to the boiler with a screw - again use the Newelectronx security screwdriver to remove the security screw.
9. The thermo sensor connects to the electronic board. Detach the wire from the electronic board. Now the thermo sensor is off.
10. Replace the thermo sensor with a new jura thermo sensor that has the same wire colors. If the wire color is wrong the contact thermo sensor might not perform as it should.
11. Now put the machine back together. Good luck