If some people use outdoor_sensor - why not wait for it to provide data?

[Chupaka]

[ScratMan]

I don't get the point of having to wait for the outdoor temperature sensor to provide a value to start the thermostat. That would only delay the start of the regulation. Did you encountered an issue that required to wait for the outdoor temperature sensor before activating the thermostat ? The update of temperature sensors being already managed by a try/except, I can't see where it may fail.