LG Template Sensor

lg_sensor.yaml

# Home Assistant template sensor I use as room temperature sensor with
# https://github.com/JanM321/esphome-lg-controller
#
# It addresses the following problems I had with my LG Multi F units in heating mode:
#
# 1) Heating range too large: with over heating installer setting 15 set to 3 (-1/+1 °C),
#    after rounding to 0.5°C, the range is 1.5°C (-0.75/+0.75 °C). Often more because
#    the unit has to pre-heat etc. These temperature swings are too uncomfortable.
#
# 2) Under-heating: the unit doesn't try very hard to reach and maintain its setpoint while heating.
#    It sometimes lets the temperature drop to `setpoint - 1°C` or even less for long periods of time
#    while heating without requesting more heat. Intermittent and I'm not sure what exactly is causing this,
#    but other users have reported the same problem.
#
# To work around 1), the template sensor adjusts the temperature values around the setpoint so that the
# effective on/off range is about -0.2°C/+0.8°C in heating mode.
#
# To work around 2), if the temperature drops below `setpoint - 0.03` and it has been heating for more
# than 20 minutes (1200 seconds), it forces the unit to work harder by using `temperature - 0.3` as
# temperature. It also uses `setpoint - 2.5` if the temperature drops too far.
#
# The LG (multi split) units aren't the best at heating, but these tweaks make my unit's behavior a
# lot more acceptable.
#
# Update April 2024: I changed this to be less aggressive than the previous version.


# Requires the Home Assistant Uptime integration. Restarting HA resets the `last_changed` timestamp
# so it also checks the uptime sensor to work around this.
   - name: "LG Living Room Sensor"
     state: >
       {% set temperature = states.sensor.my_temperature_sensor.state|float %}
       {% set setpoint = states.climate.lg_living_room.attributes.temperature|float %}
       {% if (not is_state('climate.lg_living_room', 'heat')) %}
         {{ temperature }}
       {% else %}
         {% if temperature < setpoint - 0.03 and is_state('binary_sensor.lg_living_room_preheat', 'off') and
              (as_timestamp(now()) - as_timestamp(states.sensor.uptime.state) > 1200 and
               as_timestamp(now()) - as_timestamp(states.binary_sensor.lg_living_room_preheat.last_changed) > 1200) %}
           {% set temperature = temperature - 0.3 %}
         {% endif %}
         {% if temperature > setpoint + 0.8 %}
           {{ temperature }}
         {% elif temperature > setpoint + 0.4 %}
           {{ setpoint + 0.5 }}
         {% elif temperature > setpoint + 0.1 %}
           {{ setpoint }}
         {% elif temperature > setpoint - 0.2 %}
           {{ setpoint - 0.5 }}
         {% elif temperature > setpoint - 0.4 %}
           {{ setpoint - 1 }}
         {% elif temperature > setpoint - 2.5 %}
           {{ setpoint - 2.5 }}
         {% else %}
           {{ temperature }}
         {% endif %}
       {% endif %}
     unit_of_measurement: "°C"