Helpers History_stats

Configuration
1

I have been moving my template sensors from the yaml files into the Helpers versions. I am having problems with the History_stats in Helpers. The ‘state’ field will only accept ‘unavailable’ or ‘unknown.’ If I type in a valid state for the entity, it doesn’t stick. Examining the entity in Developer Tools shows the correct state and of course the original yaml sensor has always worked.

2

Show the YAML.

3 
# Today's heat pump heating on time.


  - platform: history_stats
    name: BH_HP_Heating
    entity_id: sensor.bh_hp_hvac_action
    state: "heating"
    type: duration
    unique_id: bh_hp_heating
    
    start: "{{ now().replace(hour=0, minute=0, second=0) }}"
    end: "{{ now() }}"