High Bar with Baxi 105 SE

[hi-spec plumbing heating]

now open your main stopcock and see what happens.

 

[Baxmax]

Then have your pressure relief valve looked at/changed because it aint doing what it is supposed to do

 

[unib]

Thanks for the help folks, I opened up the stop cock again and the pressure remained around 1.5 - 2 bar. I'll get the plumbers back to have a look at the pressure relief valve though