MQTT Discovery Topic Repeatedly Published for Thermostat Climate Controller

[skyhisi]

Operating environment/Installation (Hass.io/Docker/pip/etc.):

Installed via pip in virtual env with Python: 3.9.2 esphome 1.16.2 platformio 5.0.4

ESP (ESP32/ESP8266, Board/Sonoff):

ESP8266

ESPHome version (latest production, beta, dev branch)

1.16.2

Affected component:

Issue seen when combining the Thermostat and MQTT components:

• https://esphome.io/components/climate/thermostat.html
• https://esphome.io/components/mqtt.html

Description of problem: When discovery is enabled for the Thermostat, the topic "homeassistant/climate/DEV_NAME/COMPONENT_ID/config" is repeatedly published at a rate of about 20 times per second.

This behaviour stops when discovery: False is set on the component (as no discovery messages are published).

Problem-relevant YAML-configuration entries:

mqtt:
  broker: 192.168.0.15
  topic_prefix: esphome/DEV_NAME

climate:
  - platform: thermostat
    id: COMPONENT_ID
    name: "Thermostat"
    discovery: False  # When discovery is enabled, the topic is spammed
    sensor: heater_temperature
    default_target_temperature_low: 30
    away_config:
      default_target_temperature_low: 15
    hysteresis: 3
    heat_action:
      - output.turn_on: heater
    idle_action:
      - output.turn_off: heater
    visual:
      min_temperature: 0
      max_temperature: 40
      temperature_step: 1

Logs (if applicable):

Nothing looks amiss in the ESPHome logs, when connected to the MQTT broker though, the topic is repeatedly generated:

mosquitto_sub -h 192.168.0.15 -t '#' -v | ts '[%.T]'
[13:52:40.862549] homeassistant/climate/DEV_NAME/COMPONENT_ID/config {"curr_temp_t":"esphome/DEV_NAME/climate/COMPONENT_ID/current_temperature/state","mode_cmd_t":"esphome/DEV_NAME/climate/COMPONENT_ID/mode/command","mode_stat_t":"esphome/DEV_NAME/climate/COMPONENT_ID/mode/state","modes":["off","heat"],"temp_cmd_t":"esphome/DEV_NAME/climate/COMPONENT_ID/target_temperature/command","temp_stat_t":"esphome/DEV_NAME/climate/COMPONENT_ID/target_temperature/state","min_temp":0,"max_temp":40,"temp_step":1,"away_mode_cmd_t":"esphome/DEV_NAME/climate/COMPONENT_ID/away/command","away_mode_stat_t":"esphome/DEV_NAME/climate/COMPONENT_ID/away/state","act_t":"esphome/DEV_NAME/climate/COMPONENT_ID/action/state","name":"DEV_NAME Thermostat","availability_topic":"esphome/DEV_NAME/status","unique_id":"ESPclimateCOMPONENT_ID","device":{"identifiers":"840d8eabab95","name":"DEV_NAME","sw_version":"esphome v1.16.2 Mar 12 2021, 13:51:25","model":"PLATFORMIO_D1_MINI","manufacturer":"espressif"}}
[13:52:40.912517] homeassistant/climate/DEV_NAME/COMPONENT_ID/config {"curr_temp_t":"esphome/DEV_NAME/climate/COMPONENT_ID/current_temperature/state","mode_cmd_t":"esphome/DEV_NAME/climate/COMPONENT_ID/mode/command","mode_stat_t":"esphome/DEV_NAME/climate/COMPONENT_ID/mode/state","modes":["off","heat"],"temp_cmd_t":"esphome/DEV_NAME/climate/COMPONENT_ID/target_temperature/command","temp_stat_t":"esphome/DEV_NAME/climate/COMPONENT_ID/target_temperature/state","min_temp":0,"max_temp":40,"temp_step":1,"away_mode_cmd_t":"esphome/DEV_NAME/climate/COMPONENT_ID/away/command","away_mode_stat_t":"esphome/DEV_NAME/climate/COMPONENT_ID/away/state","act_t":"esphome/DEV_NAME/climate/COMPONENT_ID/action/state","name":"DEV_NAME Thermostat","availability_topic":"esphome/DEV_NAME/status","unique_id":"ESPclimateCOMPONENT_ID","device":{"identifiers":"840d8eabab95","name":"DEV_NAME","sw_version":"esphome v1.16.2 Mar 12 2021, 13:51:25","model":"PLATFORMIO_D1_MINI","manufacturer":"espressif"}}
[13:52:40.962856] homeassistant/climate/DEV_NAME/COMPONENT_ID/config {"curr_temp_t":"esphome/DEV_NAME/climate/COMPONENT_ID/current_temperature/state","mode_cmd_t":"esphome/DEV_NAME/climate/COMPONENT_ID/mode/command","mode_stat_t":"esphome/DEV_NAME/climate/COMPONENT_ID/mode/state","modes":["off","heat"],"temp_cmd_t":"esphome/DEV_NAME/climate/COMPONENT_ID/target_temperature/command","temp_stat_t":"esphome/DEV_NAME/climate/COMPONENT_ID/target_temperature/state","min_temp":0,"max_temp":40,"temp_step":1,"away_mode_cmd_t":"esphome/DEV_NAME/climate/COMPONENT_ID/away/command","away_mode_stat_t":"esphome/DEV_NAME/climate/COMPONENT_ID/away/state","act_t":"esphome/DEV_NAME/climate/COMPONENT_ID/action/state","name":"DEV_NAME Thermostat","availability_topic":"esphome/DEV_NAME/status","unique_id":"ESPclimateCOMPONENT_ID","device":{"identifiers":"840d8eabab95","name":"DEV_NAME","sw_version":"esphome v1.16.2 Mar 12 2021, 13:51:25","model":"PLATFORMIO_D1_MINI","manufacturer":"espressif"}}

Additional information and things you've tried: As a workaround, disabling discovery at a global or component level will prevent the topic being published.

Discovery of other components appears to publishing as normal.

[probot-esphome[bot]]

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[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[kbx81]

I don't have an MQTT setup here, but I'm curious to know if any of the recent changes in thermostat have had any effect on this.

[github-actions[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.