Support 2 point calibration for adjusting temperature offset (Temperature Guesstimate)

It would be very helpful to enable 2 point calibration for adjusting the temperature measurement to match the middle of the room. Scenario as follows:

At low temperature the thermostat reads the same as the temperature measured in the middle of the room e.g. 15°C so no offset required but at higher temperature the thermostat reads 21°C but the temperature measured in the middle of the room is 19°C so an offset of -2°C required.

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Comments

  • +1 Please implement this in the app. Would make the system perfect.

  • Agreed, this is a major problem currently
  • jw0ng02
    jw0ng02
    edited November 2020
    I’d even go further to suggest to allow user to customise an offset “curve”.

    In similar scenario, say 20° is the true ambiance temperature, no offset is needed. When heating is on, 22° of the TRV actually needs -1 offset. But if TRV measures, say 27°, offset of -5 is actually needed.

    Two offset point is a good starting point, but would love to have a curve to make the TRV usually without external temperature sensor (unless this is what tado° trying to upsell us?!)
  • Jacopo2
    Jacopo2 ✭✭✭
    edited December 2020
    It won’t work as the offset doesn’t depend only on whether the heating is on or off but also by how long it has been on for, how cold is outside and a lot of other factors

    The simple solution here is to just use an external sensor (you can get one for 10€)

    I’m pushing for us to be able to use external sensors (and not the expensive Tado one) by asking to remove this firmware limitation

    https://community.tado.com/en-gb/discussion/4325/disable-trv-calibration-when-offset-is-changed-required-for-using-external-sensor#latest
  • @Jacopo2 - I agree, this is not really a solution to the unusable TRV sensor, more a like "plaster on the wound". But may be tado may find this easier to swallow then open up and allowing non-tado build external temperature sensors.

    I can understand their approach of not allowing 3rd party sensor as they are offering "energy saving guarantee", if they do not have the full control of what device is driving the heating, it would be difficult for them to fulfil their promise I guess.

    I still support that we as users should have the option to NOT getting tado external sensor and have the TRV in a usable working state! 😫

  • This needs to be done!
    i am totally disappointed by the way this system measures temperature.
    All values measured at the radiators are off by 3 to 4 degrees Celsius.
    The current offset system just won't work.
    when I set the offset to correct those values, now the thermostate registers too low values, when heeating is turned off over night.

    So, at least two point offset calibration is needed.
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