I have had TRV’s for a few months and mostly happy.
Yesterday I turned our hall trv down to 3 degrees overnight ready for getting a wall plastered. In the morning there was still some heat coming from the radiator. I swapped the trv back to the original and this seems to be working correctly and closing the valve completely. Is this a known issue as I was about to get some on the current offer but now I’m not so keen.