Versatile thermostat on heating even when target temperature far exceeded

[asdkjasdfla]

The versatile thermostat is on heating despite the target temperature being far exceeded. I am not sure what should I do to help with this issue. The versatile thermostat controls a central switch based boiler. There is a smart TRV which is also controlled by Versatile thermostat. Any suggestions

The settings of versatile thermostat is

`hvac_modes:

• "off"
• heat
  min_temp: 7
  max_temp: 23
  target_temp_step: 0.1
  friendly_name: Livingroom Verstile
  supported_features: 401
  current_temperature: 21.4
  temperature: 17
  is_on: true
  hvac_action: heating
  hvac_mode: heat
  preset_mode: eco
  type: null
  is_controlled_by_central_mode: true
  last_central_mode: null
  frost_temp: 7
  eco_temp: 17
  boost_temp: 22
  comfort_temp: 19.5
  frost_away_temp: 0
  eco_away_temp: 0
  boost_away_temp: 0
  comfort_away_temp: 0
  power_temp: null
  target_temperature_step: 0.1
  ext_current_temperature: 8.8
  ac_mode: false
  current_power: null
  current_power_max: null
  saved_preset_mode: eco
  saved_target_temp: 16.900000000000002
  saved_hvac_mode: null
  motion_sensor_entity_id: null
  motion_state: null
  power_sensor_entity_id: null
  max_power_sensor_entity_id: null
  overpowering_state: null
  presence_sensor_entity_id: null
  presence_state: null
  window_state: "off"
  window_auto_state: "off"
  window_bypass_state: false
  window_sensor_entity_id: null
  window_delay_sec: null
  window_auto_enabled: false
  window_auto_open_threshold: null
  window_auto_close_threshold: null
  window_auto_max_duration: null
  window_action: window_turn_off
  security_delay_min: 60
  security_min_on_percent: 0.5
  security_default_on_percent: 0.1
  last_temperature_datetime: "2025-02-15T17:33:33.117711+00:00"
  last_ext_temperature_datetime: "2025-02-15T17:33:33.117711+00:00"
  security_state: false
  minimal_activation_delay_sec: 60
  device_power: 1
  mean_cycle_power: null
  total_energy: 219.78
  last_update_datetime: "2025-02-15T17:36:36.372661+00:00"
  timezone: Europe/London
  temperature_unit: °C
  is_device_active: true
  device_actives:
• climate.trv_living_room_back_thermostat
  nb_device_actives: 1
  ema_temp: 21.5
  is_used_by_central_boiler: true
  temperature_slope: -0.4
  hvac_off_reason: null
  max_on_percent: null
  have_valve_regulation: false
  last_change_time_from_vtherm: "2025-02-15T17:33:31.558123+00:00"
  is_over_climate: true
  start_hvac_action_date: null
  underlying_entities:
• climate.trv_living_room_back_thermostat
  is_regulated: true
  regulated_target_temperature: 16
  auto_regulation_mode: auto_regulation_medium
  regulation_accumulated_error: -20
  auto_fan_mode: auto_fan_none
  current_auto_fan_mode: auto_fan_none
  auto_activated_fan_mode: null
  auto_deactivated_fan_mode: null
  auto_regulation_use_device_temp: false
  auto_start_stop_enable: false
  auto_start_stop_level: auto_start_stop_none
  auto_start_stop_dtmin: null
  auto_start_stop_accumulated_error: 0
  auto_start_stop_accumulated_error_threshold: null
  auto_start_stop_last_switch_date: null
  follow_underlying_temp_change: false
  preset_modes:
• none
• frost
• eco
• comfort
• boost
• `

[jmcollin78]

Hello,

This subject have been explained here: https://github.com/jmcollin78/versatile_thermostat/blob/main/documentation/en/troubleshooting.md#the-radiator-heats-even-though-the-setpoint-temperature-is-exceeded-or-it-does-not-heat-when-the-room-temperature-is-well-below-the-setpoint

Please have a look. In your case, you have to configure a strong or very string self-regulation. Don't use the "compensate internal device temperature".

[asdkjasdfla]

I have set up a strong self regulation. I have also read the documentation. The problem is that after 10 days or so the verstile thermostat stops turning on the heating device. I am attaching a graph from yesterday. You can see that the target temperature went up but the heating didn't start. You can see that after 0800 the heating device didn't start the temperature went up a few hours shortly afterwards due to another reason. Then later I manually turned on the boiler.

I am not sure why this is happening. If there is anyway I can provide any targeted logs or any other information to debug this it would be very helpful.

I have previously uninstalled and then reinstalled the verstile thermostat which appeared to make it work but since yesterday it again stopped working.

[asdkjasdfla]

Use internal temperature of the underlying is already disabled. Still the verstile thermostat is constantly on heat. I am having to manually enable and disable heating. The shaded area in the graph is when the thermostat is on heat. How can I find out what is causing the issue. Would attaching the debug log help. There .bin logfile appears to be around 1Mb when I enable debug logging for verstile thermostat

[jmcollin78]

This doesn't help me but it just confirm you have an issue.

Did you configure the self-regulation with Strong and check the documentation ?

I don't need logs (espacially 1 MB, I'm not a robot but a real person), but you can draw normalized regulation curved like explains here: https://github.com/jmcollin78/versatile_thermostat/blob/main/documentation/en/additions.md#regulation-curves-with-plotly-to-fine-tune-your-thermostat

[asdkjasdfla]

Sorry instead of posting the message here I posted on a earlier comment

[jmcollin78]

In over_cliamte VTherm just send the setpoint to the climate.trv_living_room_back_thermostat. So it is not VTherm that stop heating but this underlying climate. And I can't do anything for this. You have to debug your climate.trv_living_room_back_thermostat

[asdkjasdfla]

The climate.trv_living_room_back_thermostat is on heating and has the correct target temperature and it's hvac action is set to heating but the verstile thermostat hvac action was idle. I completely turned on auto regulation in VTherm and the hvac_action in VTherm switched to heating and the boiler turned on.

I can only assume that something was not working with Autoregulation set to medium and strong. Turning it off helped. I hope it helps someone looking for the same problem. I will keep you posted how well it works in the long run.

[asdkjasdfla]

Surprisingly the Autoregulation was set to strong and it worked for 8 days after that somehow it stopped working.

This was the configuration of VTherm when it wasn't working

hvac_modes:
  - "off"
  - heat
min_temp: 7
max_temp: 23
target_temp_step: 0.1
preset_modes:
  - none
  - frost
  - eco
  - comfort
  - boost
current_temperature: 17.9
temperature: 22
hvac_action: idle
preset_mode: boost
is_on: true
hvac_mode: heat
type: null
is_controlled_by_central_mode: true
last_central_mode: Auto
frost_temp: 7
eco_temp: 17
boost_temp: 22
comfort_temp: 19.5
frost_away_temp: 0
eco_away_temp: 0
boost_away_temp: 0
comfort_away_temp: 0
power_temp: null
target_temperature_step: 0.1
ext_current_temperature: 10
ac_mode: false
current_power: null
current_power_max: null
saved_preset_mode: boost
saved_target_temp: 22.3
saved_hvac_mode: null
motion_sensor_entity_id: null
motion_state: null
power_sensor_entity_id: null
max_power_sensor_entity_id: null
overpowering_state: null
presence_sensor_entity_id: null
presence_state: null
window_state: "off"
window_auto_state: "off"
window_bypass_state: false
window_sensor_entity_id: null
window_delay_sec: null
window_auto_enabled: false
window_auto_open_threshold: null
window_auto_close_threshold: null
window_auto_max_duration: null
window_action: window_turn_off
security_delay_min: 60
security_min_on_percent: 0.5
security_default_on_percent: 0.1
last_temperature_datetime: "2025-02-28T18:24:39.482185+00:00"
last_ext_temperature_datetime: "2025-02-28T18:27:28.913314+00:00"
security_state: false
minimal_activation_delay_sec: 60
device_power: 1
mean_cycle_power: null
total_energy: 254.36
last_update_datetime: "2025-02-28T18:28:22.305167+00:00"
timezone: Europe/London
temperature_unit: °C
is_device_active: false
device_actives: []
nb_device_actives: 0
ema_temp: 17.57
is_used_by_central_boiler: true
temperature_slope: 2.12
hvac_off_reason: null
max_on_percent: null
have_valve_regulation: false
last_change_time_from_vtherm: "2025-02-28T07:52:37.937547+00:00"
is_over_climate: true
start_hvac_action_date: "2025-02-28T07:52:44.981860+00:00"
underlying_entities:
  - climate.trv_living_room_back_thermostat
is_regulated: true
regulated_target_temperature: 26.5
auto_regulation_mode: auto_regulation_strong
regulation_accumulated_error: 30.300390625000006
auto_fan_mode: auto_fan_none
current_auto_fan_mode: auto_fan_none
auto_activated_fan_mode: null
auto_deactivated_fan_mode: null
auto_regulation_use_device_temp: false
auto_start_stop_enable: false
auto_start_stop_level: auto_start_stop_none
auto_start_stop_dtmin: null
auto_start_stop_accumulated_error: 0
auto_start_stop_accumulated_error_threshold: null
auto_start_stop_last_switch_date: null
follow_underlying_temp_change: false
friendly_name: livingroom verstile
supported_features: 401