Hors Serie: the boiler

This morning the boiler wasn't working. Odd. And it was a cold cold day, so also worrying. I go to visit it in the loft: error 22 it says: dry fire/low water pressure. Try turning it off and on: no joy. After a bit, realise that there is a pressure gauge, electronic and manual. Electronic says 0.4 bar; manual reads about zero; hard to tell. Try a few obvious things like the new stopcock; open it a bit more, but judging by the tap pressure it did no good. Of itself, pressure now reads 0.5 bar; off-on it and... it starts. And... keeps going. So maybe just a temporary drop in pressure? Not the sort of thing you want to have happening, though: needs investigation by Pete tPP.

Also some polystyrene sheets turn up. I put them inside, as they were blowing over.

Update: sunday: not working again. And doesn't recover :-(