@Solla-topee Hi, Thanks for the advice. I have performed the calibration and the thermostat is working fine now. I think it needed that done because originally it was installed in a different room so...

@Kamaal I am having similar issue I have set the thermostat to 19 and it is showing a temp of 21 in the room but the radiator is still hot so it looks like the thermostat is not respecting the temp...