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Tado X system firing heating on/off incorrectly

lee_s
lee_s ✭
edited February 26 in General Questions & Topics

Hi community, looking for an idea on whether I have a hardware issue or if there's a bug with the firmware.

Setup:

  • S Plan system
  • 1 Tado X Programmer X with Hot Water Control and OpenTherm
  • 1 Wireless Temperature Sensor X
  • 1 Smart Radiator Thermostat X

I've found that the system works fine 80-90% of the time, it's definitely wired correctly also (has been installed nearly 2 months and was installed professionally by an electrician), but then the system does seem to signal to turn off heating (and close the motorised valves etc.) say every 10-15 minutes, I hear the heating firing back up and valves reopening. Looking in the app, it's up to temperature, often exceeding the target by say 0.5 degrees but still showing either 1 or 2 wavy lines on the heating icon. Not only is this really annoying, it's un-necessarily turning on and off the boiler and makes me think the tado system is unreliable.

I have the thermostats connected via Matter in Home Assistant but do not control it from there; it's just for the data. Everything runs on a schedule in the app; the schedule for both thermostats is identical intentionally. As you can see from the screenshots it's not as though one thermostat is below and one above temperature; both are above, but keep firing the system on/off intermittently.

Any thoughts appreciated!

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IMG_4157.PNG

Answers

  • SamuraiJack
    SamuraiJack ✭✭

    Hey, I've noticed something similar with the system and to me it sounds like a software issue with Tado X.

    When I had encountered such situation, I had reset the room thermostat and typically once back on the system would then recognise that the temperature is above the setpoint and not call for heat anymore.

    Out of curiosity - would you be able to check if the reset works for you too, please?

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