Pressure bar still the same?

Could be a blockage in cappillary tube to gauge. Easiest way to find out is to open up bleed valve on top floor radiator and depressure system completely, ie when water stops coming out at pressure and just weeps from bleed valve. Then check gauge is reading zero. If you find pressure doesn't drop make sure filling loop is shut

Andy
July 2009

The pressure release valve lets go at 3 bar.....if you want to reduce the boiler pressure, continue bleeding water from the radiators. It will take a while but its the most fool proof way!

John
July 2009