🙂 and now comes the fun. As I mentioned, the heatpump was completelly burned down.. all the original circuit boards are gone... I bought new boards, from the "expert", when I was stationed in Germany.... and only God knows the serial number of the heatpump he took the parts from. the only numbers I can provide is the serial from the board. the heatpump is vitocal 300-g there is: - processor board, together with the supply and electronic valve actuator - kind of relay board where the "codierstecker" is inserted - display board - 2x board for sensor connection.. So I am not sure If You are still able to somehow help 🙂 I am slowly giving up... I think about creating new board.. I will use the electronics that is controlling the valve... but had no time yet. Would be awesome, If You find the way how to find the right "codierstecker" with board numbers. thanks wish You all the best. Peter
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