ESPHome is a system to control your ESP8266/ESP32 by simple yet powerful configuration files and control them remotely through Home Automation systems.
As already mentioned in the Pull Request comments (e.g. https://github.com/esphome/esphome/pull/4453#issuecomment-1826263264) the gas boiler does not start in case an active ESP device is connected to it during that time. It seems that the continous requests are somehow interfering with the boot process.
I'm not sure whether this issue should be handled by your code or within the underlying VitoWIFI lib, but I just wanted to add here for completeness :-)
As already mentioned in the Pull Request comments (e.g. https://github.com/esphome/esphome/pull/4453#issuecomment-1826263264) the gas boiler does not start in case an active ESP device is connected to it during that time. It seems that the continous requests are somehow interfering with the boot process.
I'm not sure whether this issue should be handled by your code or within the underlying VitoWIFI lib, but I just wanted to add here for completeness :-)