Melitta Caffeo Barista Systemfehler 8

Hello! Sorry about the Google translation. Your knowledge is our last hope. A system error occurred when switching on the coffee machine. 8. after I had disassembled the coffee machine, I saw the reason When the disc is in the correct position, there is a slight clockwise movement (~ 10 °), followed by a system error 8. If the brewing unit is connected, error 8 is also displayed twice, after which the disc is in the correct position (the brewing unit does not allow the disc to move further in the clockwise direction). I draw your attention to the fact that the switch in the area of the yellow wire is not clamped by the brewing unit.


Please tell me, what could be the solution?

Melitta Caffeo Barista TS