3 bar when cold?.if its hot 3 bar is OK
somewhere on a lower radiator/pipework should be a drain cock.use that to release water pressure from the system or if you can't find one use a radiator bleed valve
A1
November 2012
Automatic Answer
We may have found other answers which could help you.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix home heating systems.