I have a vokera linea 24 combi boiler. I have had no problems with it in the past, but in the past few months I have had my own water supply fitted (it used to come via a neighbour) and a builder had to remove a radiator to do a structural repair. I now have a problem with the boiler. The pressure keeps rising when the boiler is on. I have bled a radiator to get the pressure to 1 bar and the pressure goes back up to 3+ when I switch the boiler back on. Any ideas, I'm getting cold without heating?