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I think i have it. Is it possible the micro switch has blown in the valve as this would explain no pump or boiler on the ch calling. I did have to replace the programmer as my mate whos a plumber let a live wire touch an earth wire and blew the programmer.

I dont have much experience with y plans. Anybody able to help. Problem is i cant get the heating to fire up ie boiler and pump on the heating part. The hw is working fine. In the junction box there is power getting to the call wire for the valve and the room stat but obviously no power to...