Danfoss Ally 1.18 set external temperature to Radiator Covered TRV

No. This works as designed by danfos with only difference you’re using your own temperature sensor or calculation.

It doesn’t work like that. There is no mechanical thermostat inside. There is a valve and a PID regulator which is an automation algorithm that tries to keep the measured temperature at setpoint by opening and closing the valve at calculated percentage.

No, you’re wrong. By using external temperature sensor you’re adding better data to the algorithm which is good and works as designed.

What you’re describing is external calculation of valve percentage opening. This is not the case here.

Hello everyone, thank you very much for this @luka6000

I have these TRVs with external temperature sensors, my radiators are not actually covered. What would be the best radiator_covered mode in your opinion, true or false ?

If I understand correctly, when true, it uses only the external sensor, but when false it uses external and internal temperature ? What is the benefit of this ?
I’m trying to get the best regulation possible.

Best regards

I would use radiator_covered=false. External sensor makes temperature readings more accurate since it’s the temperature away from the radiator so probably showing more less what you actually feel in the room