The main flow checks every 15 minutes if one or more VThermo’s are switched ON:
Here, one of the VThermo’s is in ON state:
However, if I execute the flow manually, all the AND conditions are false!
I checked the setting of the VThermo’s. No delay / changed hysteresis or other modifications. They do switch state from Blue to Black and Red, indicating the status.
If I manually increase the temperature of the VThermo to an extreme value - say to 28 degrees - the flow does work; the VThermo is seen as ON and the flow triggers the heating.