Recent content by joolsm

Woohoo, the boiler did kick in when the temperature fell! Thank you for your advice. The only concern I still have is that the thermostat is showing the current in-house temperature to be 26 degrees - I am not convinced that is correct, but will monitor over the next few days. Thanks again :)

Actually, after the latest attempt at wiring it, the boiler has now gone off. We are now waiting for the temperature on the thermostat to drop down a couple of degrees until it hits the set temperature. Hopefully if the boiler kicks back in at this point, we are sorted. Thanks for advice so far :)

At one point we needed to change a fuse on the CH timer socket, which went off. Could this have damaged the new thermostat, which is in another room?

Still no change when we swap the 2 reds around - radiators come on full blast even though the temperature is showing as 25 and the set temperature is 18 degrees.

We have tried various permutations, not sure if we have swapped the 2 reds without the black one also being attached though. Will give it a try and get back to you. Thanks for the advice so far, was not sure if it was a wiring issue or something to do with the boiler.

Yes

Guess work I think, none of the diagrams seemed to apply to the wires I have

The old thermostat had old-style wiring - 2 red wires and a black. At the moment we have the 2 red wires wired into the unit and the black wire is sealed off (sorry if that's the wrong terminology!)

Hi, we are in the process of replacing an old slider-style room thermostat with a digital one (Honeywell DT90E). We have replaced it and wired it in, but it seems to be having no effect at all on the central heating! The heating just carries on working at full blast even though the current...