Thanks for that chaps. It was a blockage in the pipe from the header tank to the pump. Fixed it with a wire coat hanger.
But I have a new problem now the piot light went out on the boiler at the same time (ish) and will not stay lit. If i keep the pilot light control pressed in the bolier...
No water in the central heating system.
I was bleeding a radiator last night and it suddenly went dry.
There is water in the header tank and if I turn the bleed on at that pipe (just before the pump) I get water. However there is no water after the pump even before the 3 way valve. Is...