Myson apollo boiler blows fuse every time I try to turn it on?

I've just had a similar problem except the fuse blew attached to my programmer when I turn the heating on. Turns out to be the motorised valve. Hot water works no problem and managed to get heating working by moving switch/lever to on, on valve. That way you get heating as long as hot water is on.

M
December 2007

Its prob not the boiler but something like the heating pump try disconecting it from your wiring center and see if the fault gose if so you need a new pump. Dont run the boiler for long without the pump conected.

Marc
October 2007