Why does my boiler stay alight?
Hello Can some one help please, my boiler stays alight even tho the programmer switches the CH and HW off its stays alight i have changed both the 3way valve and programmer what else could it be, its all connected to a 10way honeywell box could that make the boiler be doing this the pump is also new, thanks Si its not a combi boiler just a normal boiler
simon
October 2009
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