Hi
The problem with a constant grinding and overflow of coffee is a micro switch in the doser box needs to be replaced. If you get the top off there is a solenoid in the center of the machine on top that has to be removed. There is a micro switch below and to the right that is bad or dirty and needs to be replaced. This micro switch turns off the grinder when the coffee pushes a arm against the micro switch. If the micro switch doesn't shut off the grinder the coffee overflows the box and falls into the brew unit. This is a very special micro switch that is only a 6 gram switch not like the others that look like it and are a 32 gram switch.
Testimonial: "Thanks a ton . I actually opened the unit and in this case (me very lucky) . the plug of the solenoid was off .. replaces that and the machine is 100%"
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