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ESPHome OpenTherm

build

This is an example of a integration with a OpenTherm boiler Baxi Nuvola-3 b40 using + decoding of boiler error codes ESPHome

Installation

  • Copy the content of this repository to your ESPHome folder
  • Make sure the pin numbers are right, check the file opentherm_component.h in the esphome-opentherm folder.
  • Edit the opentherm.yaml file:
    • Make sure the board and device settings are correct for your device
    • Set the sensor entity_id with the external temperature sensor's name from Home Assistant. (The ESPHome sensor name is temperature_sensor).
  • Flash the ESP and configure in Home Assistant. It should be auto-discovered by the ESPHome Integration.