I understand what to do if the blue water pressure needle falls below 1.5 i.e. simply open the tap until the blue needle goes up to 1.5 . However, what would I do if the blue needle rose to say 3.0 i.e. how do I get the blue needle back down to 1.5 The boiler is a Vokera Compact 24 28 model

David Samman, March 2010

get a bucket and open a radiator bleed valve wide open, get a steady stream of water, catch in bucket until pressure drops sufficiently

rawplumb, March 2010