Just turned my heating on after 4 months.....and after about 5 minutes
the fuse (to boiler and pump) blows.
It works OK with just water on. It works OK with heating+water.
(pumped, gas, header tank etc)
Now - I know there is a lack of water in the system - the feed from
the header tank is blocked - and when I took off a radiator a year ago
it has not filled properly. It subsequently worked fine - just lots of
Now - my theory - is that when I just have the heating on there is so
little water that the pump "races" and blows a fuse ????????