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yes i am! ive done some work on it over the years like the diaphram ive replased twice and other bits like that, you ovusly know a bit about this because my isolater did leak and the washer is a pig to stop it leaking

would the heat exchanger need replaceing? thanx for your help

only happins in hw demand, could it be the hw sensor but would that explan the bangin noise?

ch its all working fine!

its a worcester 24cdi thanks

im getting luke warm water from my boiler in demarnd for hw, sometimes its hot but not for long, the presure goes up and then ignition goes out and i get some bangin noise then the presure drops and it ignites can some one help me on this thanks