Heating Control, turn on boiler when any TRV requests heat (UK)

Configuration
7

@psybernoid I also have Sonoff TRVZBs. I created the following sensor in configuration.yaml:

  - binary_sensor:
      - name: "Heating Demand"
        device_class: heat
        state: >
          {% set radiators = [
            states.climate.snug_radiator,
            states.climate.kitchen_radiator,
            states.climate.lounge_radiator_left,
            states.climate.lounge_radiator_right,
            states.climate.master_bedroom_radiator,
            states.climate.landing_radiator
          ] %}
          {{ radiators | selectattr('attributes.hvac_action','eq','heating') | list | count > 0 }}

I have a Sonoff Zigbee switch on my boiler’s demand wire. I then created a very simple automation that monitors the above sensor and turns on/off the boiler switch according to the heating demand.

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