No Access to Thermostatic radiator valve Temperature Readout

Fredo2 — Mon, 22 Jun 2026 12:54:42 GMT

Hi all,

foremost thanks for the recent activities in starting to clean up the API and API policies.

I am currently working on integrating my Vissmann devices into Home Assistant using https://www.home-assistant.io/integrations/vicare/.

But now I am wondering why is there no value for the current tvr temperature?

The API value trv.temperature only "Shows the target temperature of the eTRV".

In the API docs I dont see any option for retrieving the last measured temperature value.

Best Regards

Frederik

Thema "No Access to Thermostatic radiator valve Temperature Readout" in The Viessmann API