there is something on the display now.

thanks a lot. The problem now is that i dont have the right value for the temp.

It appears a minus value for both INT and EXT sensor.

also the values for the SET POINTs are only in minus values. I think the minus symbol appears on both 75 and -25. I will upload pictures later on.

The values now i have are

INT: -0.06
EXT: -0.06