Recent content by Sparknotplumber

There is no by-pass valve fitted, I took the fan out today and it was quite clean and spun fine. So I don't know what to do next??

Hi, I have a Halstead Ace High Combi boiler which has started to make a loud humming noise. It only happens on CH when the system gets up to temp and it is intermittent. Does anyone have any advice? Thanks :roll: