Wow you guys are quick and admittedly know your stuff. Ever thought of writing manuals for Vaillant?
Unfortunately after following your advice (which was sort of what I was doing before), it looks like there is an actual fault somewhere in the pipe or the flow, as sadly, the much hoped for...
Hi
I have searched through the forum and have read all the advice. I get the F.22 message and the pressure is 0.6 and below. I have the silver braided hose type of boiler and while I see the advice on turning the valves, when I do this I get no rush of water and the pressure needle remains...