Help please! I have a Vallant Ecotec boiler that's a couple of years old.mthis year, all of a sudden, although the digistat turns the radiators on ok, they then won't turn off again. I've looked at the digistat and it's definitely showing 'off', and the radiators keep on running even with the batteries out!
Any advice gratefully received.
Matt
Any advice gratefully received.
Matt