Over- and under-shooting with BRT-100

Prerequisites

[x] Model name of your Devices MOES BRT-100 (TS0601, _TZE200_b6wax7g0)

[x] Output from Home Assistant Developer Tools state `e.g.


hvac_modes:
- heat
- "off"
min_temp: 5
max_temp: 35
target_temp_step: 1
current_temperature: 16
temperature: 15
hvac_action: idle
window_open: false
call_for_heat: true
last_change: "2024-01-12T14:50:16.040308"
saved_temperature: null
humidity: 45
main_mode: heat
tolerance: 0
heating_power: 0.0106
errors: "[]"
batteries: >-
{"sensor.a4c138062544_temperature": {"battery": "100", "battery_id":
"sensor.a4c138062544_battery"}, "sensor.a4c138062544_humidity": {"battery":
"100", "battery_id": "sensor.a4c138062544_battery"},
"climate.moes_chambre_a_coucher": {"battery": "69", "battery_id":
"sensor.moes_chambre_a_coucher_battery"}}
friendly_name: TRV Chambre à coucher
supported_features: 1

* [x] Output from Home Assistant Device Diagnostic from BT

```{
  "home_assistant": {
    "installation_type": "Home Assistant OS",
    "version": "2023.12.4",
    "dev": false,
    "hassio": true,
    "virtualenv": false,
    "python_version": "3.11.6",
    "docker": true,
    "arch": "x86_64",
    "timezone": "Europe/Paris",
    "os_name": "Linux",
    "os_version": "6.1.71-haos",
    "supervisor": "2023.12.0",
    "host_os": "Home Assistant OS 11.4",
    "docker_version": "24.0.7",
    "chassis": "vm",
    "run_as_root": true
  },
  "custom_components": {
    "idfm": {
      "version": "2.0.0",
      "requirements": [
        "idfm-api==1.3.0"
      ]
    },
    "hacs": {
      "version": "1.33.0",
      "requirements": [
        "aiogithubapi>=22.10.1"
      ]
    },
    "localtuya": {
      "version": "5.2.1",
      "requirements": []
    },
    "pollens": {
      "version": "2023.06.01",
      "requirements": []
    },
    "xiaomi_cloud_map_extractor": {
      "version": "v2.2.0",
      "requirements": [
        "pillow",
        "pybase64",
        "python-miio",
        "requests",
        "pycryptodome"
      ]
    },
    "xiaomi_gateway3": {
      "version": "3.3.5",
      "requirements": [
        "zigpy>=0.44.1"
      ]
    },
    "xiaomi_miio_fan": {
      "version": "2023.12.0.0",
      "requirements": [
        "construct==2.10.68",
        "python-miio>=0.5.12"
      ]
    },
    "better_thermostat": {
      "version": "1.4.0",
      "requirements": []
    },
    "adaptive_lighting": {
      "version": "1.20.0",
      "requirements": [
        "ulid-transform"
      ]
    },
    "rte_ecowatt": {
      "version": "0.6.3",
      "requirements": [
        "Async-OAuthlib==0.0.9"
      ]
    }
  },
  "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": "TRV Chambre \u00e0 coucher",
      "temperature_sensor": "sensor.a4c138062544_temperature",
      "off_temperature": 16,
      "tolerance": 0.0,
      "humidity_sensor": "sensor.a4c138062544_humidity",
      "window_sensors": null,
      "outdoor_sensor": null,
      "weather": null,
      "cooler": null,
      "window_off_delay": 0,
      "window_off_delay_after": 0,
      "model": "BRT-100-TRV"
    },
    "thermostat": {
      "climate.moes_chambre_a_coucher": {
        "name": "MOES Chambre \u00e0 coucher",
        "state": "heat",
        "attributes": {
          "hvac_modes": [
            "heat"
          ],
          "min_temp": 5.0,
          "max_temp": 35.0,
          "target_temp_step": 1.0,
          "preset_modes": [
            "none",
            "programming",
            "manual",
            "temporary_manual",
            "holiday"
          ],
          "current_temperature": 17.0,
          "temperature": 16.0,
          "hvac_action": "idle",
          "preset_mode": "manual",
          "friendly_name": "MOES Chambre \u00e0 coucher",
          "supported_features": 17
        },
        "bt_config": {
          "calibration": "target_temp_based",
          "calibration_mode": "heating_power_calibration",
          "protect_overheating": false,
          "no_off_system_mode": true,
          "heat_auto_swapped": false,
          "valve_maintenance": false,
          "child_lock": true,
          "homaticip": false
        },
        "bt_adapter": "mqtt",
        "bt_integration": "mqtt",
        "model": "BRT-100-TRV"
      }
    },
    "external_temperature_sensor": {
      "entity_id": "sensor.a4c138062544_temperature",
      "state": "16.0",
      "attributes": {
        "state_class": "measurement",
        "native_value": 16.0,
        "unit_of_measurement": "\u00b0C",
        "device_class": "temperature",
        "friendly_name": "Capteur Chambre \u00e0 coucher Temperature"
      },
      "last_changed": "2024-01-13T07:44:10.990942+00:00",
      "last_updated": "2024-01-13T07:44:10.990942+00:00",
      "context": {
        "id": "01HM0WEF7EH4736FVXQA2FM5Y7",
        "parent_id": null,
        "user_id": null
      }
    },
    "window_sensor": "-"
  }
}

Description

Hi I had to change my coordinator (conbee2 to sonoff-P) and as a consequence, had to re-pair my devices. Since then, the 2 TRV in the living room are systematically undershooting (stalling 1°C under the target), and the bedroom TRV is overshooting.

I'll illustrate the overshooting part (and json/state above are linked to the bedroom TRV), as it's more annoying and energy wasting.

Capture d'écran 2024-01-13 090943

Target is 15°C. It started to heat to 17°C this morning.

My settings : target based, AI time, "if your device doesn't support off, use 5°C", and "child lock".

On my previous settings, I remember I had to wait a few days before AI calibration took effect, but never had this kind of annoying behavior.

On these MOES BRT-100-TRV, should I use other options, like "swap auto/heat"?

Thanks for your help

Steps to Reproduce

Set a target, eg 15°C
Wait and see

Expected behavior:

TRV should fluctuate around the target.

Actual behavior:

it starts heating before hitting the target, and, over time, tends to heat to higher temperature. After a while (see figure above), it even heats +2°C above target.

Versions

HA 2023.12.3 , BT 1.4.0

Additional information

On the other hand, my other TRV have the opposite behaviour. They stop heating before reaching target. During night, I set 17, during day 19. Typically, it will stabilize around 18. I have the impression valves are not full open (even according to the thermostat, they're heating). Again I'm waiting a few days without fiddling to see how and if AI changes anything.

KartoffelToby / better_thermostat