I mentioned yesterday that my 3A fuse kept blowing, knocking out my central heating. After looking at it a bit more closely yesterday the central heating clock stayed on for hours while the heating was switched off. When I switched the heating on it worked for about an hour before the fuse blows again. The radiators warmed up and I got some hot water.
Is this a sign that everything is working mechanically but something is overheating over that 1/2 hour - hour?
I'm starting to think the pump must be it so I guess I should get a leccy around to check it out