my bolier keeps losing pressure, its usually drops after a few days and i have to re pressure it, but for the last few days its dropping every hour.. i have checked everywhere for leaks and found nothing. i have checked the radiators and there does not seem to be any air in them. its a glow worm 30Ci ... any ideas anyone please...

shortstuff, December 2008

yeah the pressure rises really quickly and then drops within half an hour... its also sounds when it is working that it is struggling to keep alight, thanks for answering my question, looks like time to call in a heating specialists....

shortstuff, December 2008

does the pressure rise quickly when your heating is on sounds like your expansion vessel has gone faulty which will open the prv outside

simon, December 2008