Why is one radiator reaching much higher temperature than the one set

Hi all,

I've recently had my tado system installed and it all seems to be working fine - apart from one room which I have set to 15 degrees and yet consistently it seems to reach temperatures of 23 degrees. Any ideas why this may be happening or how to fix it please?




  • It sounds like the TRV head is failing to close the radiator valve. Remove the head and depress the centre pin with a coin or a metal tool. If the pin is stiff or fails to move then use a small amount of WD40 to lubricate. Could also be a calibration issue. Removing the batteries will force the TRV to re-calibrate the motor when the head is reattached.

  • Thank you so much. I will try that