Temperature randomly changed to 17 degree

[0verEngineer]

Prerequisites

• [ ] Model name of your Devices
• [ ] Output from Home Assistant Developer Tools state e.g.
• [ ] Output from Home Assistant Device Diagnostic from BT

{
  "home_assistant": {
    "installation_type": "Home Assistant Container",
    "version": "2023.12.3",
    "dev": false,
    "hassio": false,
    "virtualenv": false,
    "python_version": "3.11.6",
    "docker": true,
    "arch": "x86_64",
    "timezone": "Europe/Berlin",
    "os_name": "Linux",
    "os_version": "6.4.14-200.fc38.x86_64",
    "run_as_root": true
  },
  "custom_components": {
    "better_thermostat": {
      "version": "1.4.0",
      "requirements": []
    },
    "hacs": {
      "version": "1.33.0",
      "requirements": [
        "aiogithubapi>=22.10.1"
      ]
    },
    "simpleicons": {
      "version": "v2.2.0",
      "requirements": [
        "simpleicons==7.14.0"
      ]
    },
    "dual_smart_thermostat": {
      "version": "0.5.5",
      "requirements": []
    },
    "truenas": {
      "version": "0.0.0",
      "requirements": []
    },
    "momentary": {
      "version": "0.6.3",
      "requirements": []
    },
    "xiaomi_cloud_map_extractor": {
      "version": "v2.2.0",
      "requirements": [
        "pillow",
        "pybase64",
        "python-miio",
        "requests",
        "pycryptodome"
      ]
    },
    "eventsensor": {
      "version": "3.3.1",
      "requirements": []
    }
  },
  "integration_manifest": {
    "domain": "better_thermostat",
    "name": "Better Thermostat",
    "after_dependencies": [
      "climate"
    ],
    "codeowners": [
      "@kartoffeltoby"
    ],
    "config_flow": true,
    "dependencies": [
      "climate",
      "recorder"
    ],
    "documentation": "https://github.com/KartoffelToby/better_thermostat",
    "iot_class": "local_push",
    "issue_tracker": "https://github.com/KartoffelToby/better_thermostat/issues",
    "requirements": [],
    "version": "1.4.0",
    "is_built_in": false
  },
  "data": {
    "info": {
      "name": "Thermostat B\u00fcro",
      "temperature_sensor": "sensor.temp_office_temperature",
      "off_temperature": 20,
      "tolerance": 1.0,
      "humidity_sensor": "sensor.temp_office_humidity",
      "outdoor_sensor": null,
      "weather": null,
      "window_off_delay": 60,
      "window_sensors": "binary_sensor.window_sensor_03_office_contact",
      "cooler": null,
      "window_off_delay_after": 60,
      "model": "ME168"
    },
    "thermostat": {
      "climate.thermostat_01_office": {
        "name": "Thermostat_01_Office",
        "state": "heat",
        "attributes": {
          "hvac_modes": [
            "auto",
            "heat",
            "off"
          ],
          "min_temp": 5.0,
          "max_temp": 35.0,
          "target_temp_step": 1.0,
          "current_temperature": 16.0,
          "temperature": 35.0,
          "hvac_action": "heating",
          "friendly_name": "Thermostat_01_Office",
          "supported_features": 1
        },
        "bt_config": {
          "calibration": "target_temp_based",
          "calibration_mode": "heating_power_calibration",
          "protect_overheating": false,
          "no_off_system_mode": false,
          "heat_auto_swapped": false,
          "child_lock": false,
          "homaticip": false
        },
        "bt_adapter": "mqtt",
        "bt_integration": "mqtt",
        "model": "ME168"
      }
    },
    "external_temperature_sensor": {
      "entity_id": "sensor.temp_office_temperature",
      "state": "20.48",
      "attributes": {
        "state_class": "measurement",
        "unit_of_measurement": "\u00b0C",
        "device_class": "temperature",
        "friendly_name": "Temp_Office Temperature"
      },
      "last_changed": "2023-12-31T09:23:00.013255+00:00",
      "last_updated": "2023-12-31T09:23:00.013255+00:00",
      "context": {
        "id": "01HJZJY29DSS41726H6YE2RAC9",
        "parent_id": null,
        "user_id": null
      }
    },
    "window_sensor": {
      "entity_id": "binary_sensor.window_sensor_03_office_contact",
      "state": "off",
      "attributes": {
        "device_class": "door",
        "friendly_name": "Window_Sensor_03_Office Door"
      },
      "last_changed": "2023-12-30T23:37:31.327280+00:00",
      "last_updated": "2023-12-30T23:37:31.327280+00:00",
      "context": {
        "id": "01HJYHE0XZQRQWZ9W85CENBSQE",
        "parent_id": null,
        "user_id": null
      }
    }
  }
}

Description

I woke up today and the Living room and Office are not heated because the better thermostat somehow changed to 17 degree celsius.

Steps to Reproduce

Expected behavior:

Do not change the heating temp i set.

Actual behavior:

It changed the temp randomly without any reason.

Versions

Additional Information

[mi-ty]

Same issue but changes to random values between 28°C and 35°C

[0verEngineer]

@KartoffelToby How can this happen? Why is the code even able to change the temperature? Only the user should be able to do this.

[matschbirne]

May a duplicate of #1097 ?

[Avinunca]

I too observe random temperature setting changes.

[raoulbhatia]

FWIW, I also had issues with "malfunctions" of outdoor sensors until I decided to completely disable them.

No real issue since then. Perhaps this is worth to check?

[bensuffolk]

Same issue but changes to random values between 28°C and 35°C

Same for me, it’s been randomly picking very high temps, leaving the heating on all night and waking up to a very warm room.

[Ciaccona]

I appear to have fixed the issue by not adding anything to do with outdoor temperature on all of the TRVs.

Not sure if this will work for others.

[bensuffolk]

I think from reading other similar issues the problem I had was that my tmp sensor died and I swapped it out for another one. Any changes to config seem to cause multiple instances to run and when the temp gets updated on the TRV its being read in the other instance as the user changing it, which then updates the value.

This seems to be a good thing to do :

https://github.com/KartoffelToby/better_thermostat/issues/1097#issuecomment-1817858536

• Remove all better thermostats and integrations

• Install better thermostaat 1.2.1

• Configure the thermostats

• Never change any better thermostat setting after the initial configuration!!! That causes the same problem, even in 1.2.1.

• update tot 1.4.0, now no problems at all for about 5 days.

• I have not installed and used BT UI in this setup

But I have actually just gone straight for the 1.5 beta after deleting the old version.

[schummar]

The issue you are describing should be fixed - or at least better - with 1.5 Beta 4. See #1231

I'm still observing my setup and there might still have been some unexpected temperature changes, but it's a lot better already.