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the system is for cental heating and general hot water tank use , so i gotta run it all together it seems as the controller whever off or on makes no difference i'm hoping this proves my theory that the potterton switch is buggered ?

hi hopefully i get the question right recently got back from hol's turned the heating and hot water but the heating stays on continu-sly even when the timer is off , if i switch the heating off and the water it still heats up the radi , i have to switch the boiler off manually to stop the...