Bosch Thermostat 2 external reference temperature

[HarryKane]

Hi,

I have a Bosch Thermostat 2 (TRV) and a Shelly Plus H&T. Since the TRV is located in a quite narrow niche, the temperature measured by the is much higher than measured by the Shelly.

How can I set the reference temperature of the TRV to the external measured?

Best regards!

[armin-gh (ArminH)]

Hi
what you can’t do, to my best knowledge, is to use the temperature from the Shelly in the Bosch Controller or with the App for the mobile
What you can do is using automations in Home Assistant to use the temperature from the Shelly and set the target temperature using the “climate.set_temperature” service on the climate-entity for this room

[tschamm (Thomas Schamm)]

Hi @HarryKane
to my knowledge, I’m afraid the feature requested is not possible. On the TRV, you can only measure the state of temperature and set the target temperature. Overriding the measured temperature with an external source is not possible.
Best, Thomas

[iceteabottle]

That’s not correct. The Bosch TRV has an entity for an external temperature sensor especially for that use case. Checkout my brand new blueprint

Automate your Bosch Thermostat 2

Automation especially for the Bosch Thermostat II (BTH-RA) One of the big advantage of the Bosch TRV is that it’s possible to set the value of an external temperature sensor as current temperature – there is no need of the usual manual calibration. I was surprised that nobody published an automation for the sync of the external temperature sensor. So I tried to build up a blueprint on my own. That’s my first one btw. Please give it a try if you own a Bosch Thermostat II. (Btw. I al…