I didn't know that; especially as my problem seems the same.
Anyway, I've taken the thermostat out and will go to the local plumbers' merchants with it and see what they suggest.
Hello everyone,
I seem to have the same (or similar) set up and problem to that described above; except the fuse which keeps blowing is the 'old' type where you have to cut a length of fuse wire and fasten it into place.
So where to start? How do I know if the thermostat has failed or the...