Great - thanks for that. Is that what is in the small white box then (with the small moveable switch sticking out of the top)?
I have an electrical engineer friend coming over hopefully today, if not tomorrow so if that is the case it should all be good.
Cheers!
Hi,
I think the fault may be with the small box in the cupboard next to the hot water tank and not with the boiler. We have an Ideal Icos boiler and a Horstmann Diadam electrical system to switch the hot water and central heating on and off (and to switch between the two). There is a small...