W i have also noticed the boiler doesn't turn off on stat I turned it fully anti-clockwise to 1 and it kept running I will change this today Could this be the possible fault that the water is not heating - could it be that the boiler is just boiling the water into the expansion tank and not letting it travel around the gravity system If I change stat could it solve my problems and I could get hot water
Had oftec engineer out today he recommends Yplan with room stat and a cylinder stat and pressure vessel days work ;-) think I will deffo go with this
Sounds like a good plan, You may be forking out now but long term you will save money and have much greater control of your water and heating temperatures.