Hi, my heating has been off most of the summer and on swithcing the system back on it worked perfectly but i noticed lots of air in two radiators. I bled the first one and heat reached the top but on the second only a small amount of air came out but it was still cold at the top. I checked the pressure and it's gone to 0 bar, i tried filling it up by opening the water valve but the pressure remains at 0. What am i doing wrong and should the boiler be on or off when topping up the water pressure? thanks in advance.

Ann-marie., September 2008

Its a pity she did not respond to that advice and post the outcome.

The filling loop valve or non return valve may be jammed. Probably need a replacement filling loop.

Tony Glazier

Agile Services, November 2008

add water to 15psi tryto keep it there bleed a whole lot or till hot that means do it on

old guy, September 2008