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All sorted out thanks Mandate. JohnD thanks for your help as well,yes there was a wiring diagram in the box but if i understood what it meant i would not of posted on this forum for help would i.looking at a few posts on these boards there seem to be alot of people like you just taking the p*ss...

I'm trying to replace my old potterton PRT1 room thermostat with a Potterton PRT2 thermostat but am a bit unsure where the wires should go.On the PRT1 it is wired as below 4 4 2 1 N N * L no...