I have a sealed central heating system.Some where along the line i seem to be loosing a lot of water,i keep having to top the system up every day from the pressure bottle.The radiator in the bathroom gets air in it all the time,have to bleed it quite often.Also get gurgling inside the boiler and pilot light also goes out now and again,cannot see any leaks any where.Have seen water coming out of the expansion pipe before,could it be anything to do with the pressure relief valve!

Steve, February 2009

glowworm 30ci flashing 2.7 bar watt does that mean

m, October 2009

I had exact same problem with my Gloworm boiler over Christmas.
Called out one of gloworms engineers who replaced the pressure relief valve as the airlock had gone allowing water to escape through the expansion pipe.
The engineer had to dismantle alot of the boiler to get to it as it is at the back of the boiler.
It took the engineer over an hour to complete.

Andy, February 2009