Don't know. The boiler is quite loud when I put the hot water on.
However, when I put the heating on the boiler goes to nearly 2 bar - perfect.
Of course it goes back down again when the water cools.
Does this give any clues as to whether there is a lack of water in the system? or it is...
I'm sorry to post yet another loss of pressure question - however, I would appreciate any advice that could be given.
We have a Vailant Combi Boiler.
About 3 months ago we noticed a fluctuation in pressure. We called Br Gas who said that the pressurisation vessell needed re-pumping - they...