at cold my pressure reads 1-1.5 bar put the boiler on and pressure goes up to 3 bar let a bit of water off and runs ok all day then over night as cools because taken some out drops pressure and low cut out comes on any ideas (dosnt seem to be leaking out of high pressure valve)

paul, February 2011

thanks brian got my plumber round to pump it up running ok at the moment thanks it pays to know before hand paul

paul, February 2011

either pipe to pressure vessel is blocked-pressure vessel needs re-pressurising or vessel is kaput

brian, February 2011