DavecUK
Think you’re spot on, machine powered down at 1600, just got home and saw more water in the tray, checked the hose that’s connected from the anti-vac and can see it’s full of water, squeezing it sends more out the tube by the drip tray.
Popped the safety valve off and can see water is pretty much brimming the steam boiler, I guess it’s never meant to go this far up…
I’ve shut off the mains feed and will try cleaning out the valve tomorrow, otherwise if a new one is needed, what am I asking BB for as they don’t seem to list this as a Duetto part…
Thanks for the tips, you’ve been an incredible font of knowledge, very much appreciated 🙏