When the CH is on, the pressure drops from 1.5 bar to 0 in around an hour, and when not on much more gradually.
Accompanying this a creaking/groaning noise which is loudest when I listen to my screwdriver "stethescope" on the CH flow inside the casing after it leaves the diverter valve. This noise goes immediately there is DHW demand, to return after the demand.
When the boiler fires up there is water vapour in the flue.
Most of the CH pipework is in the first floor void, so I have been able to inspect the majority of it, and apart from that, surely signs of a leak would have shown up after two months! Yes, my wife is not a happy bunny! There is no pipework under the ground floor.
I have tried Fernox leak seal, which works for as long as the boiler is off, but gradually fails when the boiler is in use.
Amongst other parts, I have replaced the hi-limit stat after the reset button failed to do anything. This means, of course, that the boiler has overheated. It is only seven years old, - is it dying?
Accompanying this a creaking/groaning noise which is loudest when I listen to my screwdriver "stethescope" on the CH flow inside the casing after it leaves the diverter valve. This noise goes immediately there is DHW demand, to return after the demand.
When the boiler fires up there is water vapour in the flue.
Most of the CH pipework is in the first floor void, so I have been able to inspect the majority of it, and apart from that, surely signs of a leak would have shown up after two months! Yes, my wife is not a happy bunny! There is no pipework under the ground floor.
I have tried Fernox leak seal, which works for as long as the boiler is off, but gradually fails when the boiler is in use.
Amongst other parts, I have replaced the hi-limit stat after the reset button failed to do anything. This means, of course, that the boiler has overheated. It is only seven years old, - is it dying?
