Climate - Generic Thermostat not working

Actually simple thermostat takes them from the attributes of the climate entity. Those should be correct.

To give you an idea how it is represented in Lovelace:

…with the underlying code of:

type: custom:stack-in-card
mode: vertical
cards:
  - type: custom:simple-thermostat
    card_mod: null
    style: |
      ha-card {
        background: WhiteSmoke;
        --keep-background: true;
      }
    entity: climate.beanbag_zone_ac
    control:
      _headings: false
      hvac:
        'off':
          name: Aus
        cool:
          name: Cool
        dry:
          name: Dry
        fan_only:
          name: Fan Only
      fan:
        auto:
          name: Auto
          icon: mdi:fan-auto
        low:
          name: Low
          icon: mdi:fan-speed-1
        medium:
          name: Medium
          icon: mdi:fan-speed-2
        high:
          name: High
          icon: mdi:fan-speed-3
        powerful:
          name: Powerful
          icon: mdi:fan-chevron-up
        night: false
        lowMedium: false
        lowHigh: false
        mediumHigh: false
    hide:
      temperature: true
    icon:
      auto: mdi:autorenew
      cool: mdi:snowflake
      'off': mdi:power
    sensors:
      - entity: sensor.sonoff_snzb_02_temperature_sensor_beanbag_zone_temperature
        icon: mdi:home-thermometer-outline
      - entity: sensor.sonoff_snzb_02_temperature_sensor_beanbag_zone_humidity
        icon: mdi:water-percent
      - entity: sensor.temptrend_beanbag_zone
        icon: mdi:thermometer-lines
    step_size: '1'
    layout:
      mode:
        headings: false
  - type: entities
    card_mod: null
    style: |
      ha-card {
        background: WhiteSmoke;
        --keep-background: true;
      }
    entities:
      - entity: sensor.ac_beanbag_zone_cooling_time_today
        name: Kühldauer heute (Stunden)
  - type: entities
    card_mod: null
    style: |
      ha-card {
        background: WhiteSmoke;
        --keep-background: true;
      }
    entities:
      - entity: switch.pj_mini_zsw01_ac_beanbag_zone
        icon: mdi:lightning-bolt
        name: AC Beanbag Zone (Master Switch)
    state_color: true

Hope this helps to lead you to how it can be done.