Wider shot attached. Definitely no click - nothing! If the overheat has operated (whatever that means!) what is the remedy??
Thanks for responding
Peter
Thanks for the quick reply. Nothing happens when you try pressing the button - it'll twist round either way, that's all. I don't have a multimeter but could get hold of one to test what you would have suggested had I said yes!
Peter
...when turned on for the winter. Circuits seem OK so I tried replacing the room stat (part 86661). No change. I read somewhere that a reset might help. I assume the reset button is the little post with red dot under the stat as in the left of picture. Does anyone know if this is right and can...