Glow worm 30ci, When heating is on the pressure goes up to 3 bar?
Glow-worm 30ci
when the heating is on the pressure goes upto 3 bar, and then when its cold it goes back down to 1 bar. I have looked on the internet and it sounds like the pressure in the heat exchanger might be low, but i cant see when to check/add air to the exchanger. Help please
Andy Groves, September 2006