i posted a topic few days ago regarding a vibrating noise coming from the boiler which is a glow worm compact. had the fan replaced last week, and now its making a loud intermitent vibrating noise got bg coming out on tuesday to have a look. but today the heating has been on for nearly 2 hours and the pressure gauge is reading over 1.5 its set cold at just a fraction over 1 but i thought it went up and then wen cools down goes down a bit could this be relevent to the vibrating noise im hearing many thnxs for replies