Generic Thermostat not working with Aqara E1 Thermostat

Hello :slight_smile:

I am currently trying to get my genric thermostat to work. But my Aqara E1 TRV ist not turning on or off. The connected Aqara Temperature sensor seems to work.

Here is my config:

Generic Thermostat

climate:
  - platform: generic_thermostat
    unique_id: kuche_generic
    name: Küche Heizung External
    heater: input_boolean.kuche_heizung_schalter
    target_sensor: sensor.wohnzimmer_temperatur
    initial_hvac_mode: "off"
    min_temp: 5
    max_temp: 26
    target_temp: 23
    away_temp: 5

Automation for the input boolean
The climate.lumi_lumi_airrtc_agl001_thermostat_2 is my Aqara TRV

- id: '1698496472126'
  alias: Küche Heizung - Dynamic Adjust with Generic Thermostat
  description: ''
  trigger:
  - platform: state
    entity_id:
    - input_boolean.kuche_heizung_schalter
  condition: []
  action:
  - choose:
    - conditions:
      - condition: state
        entity_id: input_boolean.kuche_heizung_schalter
        state: 'on'
      sequence:
      - service: climate.turn_on
        data: {}
        target:
          entity_id: climate.lumi_lumi_airrtc_agl001_thermostat_2
    default:
    - service: climate.set_hvac_mode
      data:
        hvac_mode: 'off'
      target:
        entity_id: climate.lumi_lumi_airrtc_agl001_thermostat_2

State:
Also getting the little questionmark icon on my generic thermostat in the ui.