Templates work different in dev area than as value_template

Configuration
1

Ok, I have been trying to setup a template sensor to convert from Fahrenheit to Celsius, and I have code that works perfect in the Templates dev/testing area, but as soon as I try it in the value_template field of a sensor under platform: template, it only returns the temperature in Fahrenheit and even changes the unit, which I explicitly set to ‘°C’ to ‘°F’

Anyway,s I have no idea what is going on. Why is the following template code working perfect in the testing area, but not as a sensor template?

{{(((states.sensor.ender_3_actual_bed_temp.state | float - 32) * 5 / 9) | round(1)) }}

And here is the sensor code

- platform: template
 sensors: 
   ...
   ender3_curr_bed_temp_c:
     friendly_name: Ender 3 Current Bed Temp
     unit_of_measurement: '°C'
     value_template: "{{(((states.sensor.ender_3_actual_bed_temp.state | float - 32) * 5 / 9) | round(1))  }}"
2

Because that’s what HA does with temperatures. It converts all temperatures to the unit system you have in your basic config. If you want to display in F, then change the unit_of_measurement to something it doesn’t understand (like maybe Fahrenheit??? Not sure of the details and I don’t have time to look right now.)

3

Thank you! I simply added a space in the the unit and it worked. … Now I think I’ll look into disabling that auto conversion.