radiators heating up stairs when running hot tap, also hot water temp scorching hot, checked flow rate and burner pressure all correct, has this boiler got a diverter vale or is it through the heat exchanger?
maybe has pin hole. pressure not going up staying at 2bar.
glow worm tech constantly engaged
thanks
maybe has pin hole. pressure not going up staying at 2bar.
glow worm tech constantly engaged
thanks