[bug] - Unable to set hvac_mode from automation

[brodyhoskins]

I have a thermostat configured as follows:

climate:
  - platform: dual_smart_thermostat
    name: Office Thermostat
    heater: switch.shelly1pm_3494547839ca
    target_sensor: sensor.office_sensor_temperature_3
    initial_hvac_mode: "off"
    min_temp: 60
    max_temp: 80

I have an automation that I would have set the hvac_mode to "heat", so it's configured like:

action: climate.set_temperature
data:
  temperature: 72
  hvac_mode: heat
target:
  entity_id: climate.office_thermostat

The issue is that while the target temperature is set, the hvac_mode does not switch from "off" to "heat."

[swingerman]

Do you see any error message?

[brodyhoskins]

I don't see any errors from Home Assistant's Docker logs, and strangely I don't see any change in the Logbook/History.

I haven't used HACS in quite a long time and don't remember how everything fits together. I wonder if I'm doing something that the integration doesn't like.