What is the TS setting on the intaller menu for?
Try as I might I can't find any explanation of what the TS setting does on the smart thermostat installer menu. I'm guessing (probably incorrectly!) it might be to set the stat as a temperature measuring device instead of the smart TRVs in a room?
Yes, TS = Temperature Sensor. Used when the wall stat is linked to a smart TRV or the extension kit.
Thanks, I was right after all!