Thanks for that.
I don't think it can be 1) as nothing's been changed to make the water heat any more than it was (unless I suppose the thermostat's gone wrong).
I don't think it's 3) either as the water level in the header tank seems fine & nowhere near the level of the F&E tank, and the...
Hi
I woke up this morning to find my overflow leaking from my cold water tank (after the hot waater had come for the morning). I've adjusted the ball valve & it's stopped but I've got a lingering doubt.
At the bottom of the cold water tank there's an outlet down into the hot tank in the...