had a Glow-worm 36he condensing boiler fitted but needs pressere to be at 1.5 bar before it will fire up think it should be only 1 bar hence runs at about 3 on the red when hot losses pressure after about a week pipe work been checked for leeks but none can anyone help please

Neeps, April 2009

An increase of 2 bar when the C/H is on is a bit over the top....ask a heating engineer to check the air pressure in the expansion vessel.

John, April 2009