Restart autotune.

[sebsebseb1982]

It's been several months since I set up Smart Thermostat. It worked until now but I wanted to improve its monitoring of the temperature setpoint by launching an autotune process.

So I added an autotune parameter to my configuration.

climate:
  - platform: smart_thermostat
    name: Thermostat
    unique_id: "thermostatMaison"
    heater: switch.domo_chaudi_re
    target_sensor: sensor.temperature_maison
    #    target_sensor: sensor.domo_etage
    outdoor_sensor: sensor.domo_ext_rieur
    debug: true
    #  autotune: "ziegler-nichols"
    min_temp: 14
    max_temp: 22
    min_cycle_duration: 00:20:00
    ac_mode: False
    target_temp: 19
    autotune: "ziegler-nichols"
    keep_alive:
      seconds: 60
    away_temp: 15
    kp: 5
    ki: 0.01
    kd: 500
    pwm: 00:15:00

Since then, I have observed the log "thermostatMaison: Autotune will run with the target temperature set after 10 temperature samples from sensor. Changes submitted after doesn't have any effect until autotuning is finished ". Where can I see if these measures are progressing?

Here is my entity attributes :

hvac_modes: heat, off
min_temp: 14
max_temp: 22
preset_modes: none, away
current_temperature: 18.5
temperature: 19.5
hvac_action: idle
preset_mode: none
away_temp: 14
eco_temp: null
boost_temp: null
comfort_temp: null
home_temp: null
sleep_temp: null
activity_temp: null
control_output: 0
kp: 5
ki: 0.01
kd: 500
ke: 0
pid_mode: off
pid_i: 0
pid_p: 0
pid_d: 0
pid_e: 0
pid_dt: 0
autotune_status: off
autotune_sample_time: null
autotune_tuning_rule: ziegler-nichols
autotune_set_point: null
autotune_peak_count: 0
autotune_buffer_full: 0
autotune_buffer_length: 10
icon: mdi:temperature-celsius
friendly_name: Thermostat
supported_features: 17

Can I restart the autotune process from scratch?

Bonus question, could someone explain to me the difference between all these attributes:

• hvac_action
• preset_mode
• control_output
• pid_mode

[Kolia56]

autotune_status tells whether the process is started and then finished
hvac_action tells the output control is on or idle
preset_mode: gives the opportunity to set various temperature target points and set the thermostat to these predefined figures without interacting directly with the target set point.
control_output: it is the output of the PID controller ranking 0 to 100.