Boiler pressure (and short cycle) issue - not just EV

[simonhill]

Bit of an update... Insurance send out third guy. This guy knows his stuff. Checks the EV pressure properly (by dropping system pressure first) - it's 2.5 bar! Yes, first guy had charged the EV to 2.5 bar. And second guy had lied when he said he'd checked it. So third guy drops EV pressure to just over 1 bar and tops up system to 1.5 bar. And now, touch wood, looks like system is stabilised to 1.5 bar and problem solved.

Anyone had any experience of super-over-pressurising EVs? Apart from the obvious danger, I'd guess over-pressurising could show exactly the same symptoms as having no pressure, as when over-pressurised, no water can get in?

 

[John.g]

If EV has no pre charge pressure, if charged to 1.5bar, might just rise to slightly < than 3.0bar when hot, if pre charged to 2.5 bar and even if "only" charged to 1.5 bar, then again sailing very close to 3.0 bar when hot and will possibly exceed it and lift the PRV.

 

[simonhill]

If EV has no pre charge pressure, if charged to 1.5bar, might just rise to slightly < than 3.0bar when hot, if pre charged to 2.5 bar and even if "only" charged to 1.5 bar, then again sailing very close to 3.0 bar when hot and will possibly exceed it and lift the PRV.

Thanks John. Perfect. Much appreciated.