One other thing that I've just thought about. If you open the thermostat up as though you were changing the batteries, there's a little 8 pin socket on the back half and on the front half there are 8 corresponding pins. Are all of those pins going into the relevant holes on the socket?
I was wondering if anyone had any suggestions about an issue I'm having at work with our central heating?
We have 2 central heating zones, 1 for the offices on the ground floor and the other for underfloor heating in our ground floor stores and a small rear office. Until fairly recently we've...