thermostat switching off because of wrong temperature measurement

[LarsOde]

Description

current temperature shown ridiculous high (always 126.5°C), so BT switches the radiator off

Expected behavior:

correct temperature read

Actual behavior:

wrong current temperature

Versions and HW

Home Assistant: latest, I alsways update
Better Thermostat: latest, just installed

TRV(s):
Fritz DECT

Debug data

diagnostic data

temperature in my router to which it's connected via DECT

I should maybe add, that I didn't have that issue in the Scheduler integration (but that had other issues, so I wanted to switch to BT)

[Pasta66]

same here :-(