My boiler is slowly torturing me...
A while back it started making a nasty clonk when going from central-heating mode to hot-water mode. After a bit it started to intermitantly fail to give hot-water on demand.
A new diverter valve was fitted (the second in 2 years, and the boiler is less than 4 years old).
All seemed well for a few days, but now it's clonking with avengance once more!
Any ideas? I've run out of them!
G.