TypeError: must be real number, not NoneType

Not sure if it's an ESPHome bug, but I get this only with esphome-opentherm. After I restart Home Assistant, the integration fails with this error:

Error setting up entry opentherm for esphome

Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/config_entries.py", line 382, in async_setup
    result = await component.async_setup_entry(hass, self)
  File "/usr/src/homeassistant/homeassistant/components/esphome/__init__.py", line 370, in async_setup_entry
    infos, services = await entry_data.async_load_from_store()
  File "/usr/src/homeassistant/homeassistant/components/esphome/entry_data.py", line 228, in async_load_from_store
    infos.append(cls.from_dict(info))
  File "/usr/local/lib/python3.10/site-packages/aioesphomeapi/model.py", line 87, in from_dict
    return cls(**init_args)
  File "<string>", line 16, in __init__
  File "/usr/local/lib/python3.10/site-packages/aioesphomeapi/model.py", line 73, in __post_init__
    super().__setattr__(field_.name, convert(val))
  File "/usr/local/lib/python3.10/site-packages/aioesphomeapi/util.py", line 49, in fix_float_single_double_conversion
    if value == 0 or not math.isfinite(value):
TypeError: must be real number, not NoneType

This is the yaml configuration:

substitutions:
  devicename: opentherm
  upper_devicename: Opentherm

esphome:
  name: $devicename
  platform: ESP8266
  board: d1_mini
  esp8266_restore_from_flash: true

external_components:
  source: github://arthurrump/esphome-opentherm@main

wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password
  ap:
    ssid: "${devicename} Fallback"
    password: !secret wifi_password

web_server:
  port: 80

captive_portal:
logger:
api:
  encryption:
    key: <redacted>
ota:
  password: <redacted>

opentherm:
  in_pin: 12
  out_pin: 14
  ch_enable: true
  dhw_enable: true

output:
  - platform: opentherm
    t_set:
      id: t_set
      min_value: 15
      auto_max_value: true
      zero_means_zero: true

number:
  - platform: opentherm
    t_dhw_set:
      name: "Boiler DHW Setpoint"
      auto_min_value: true
      auto_max_value: true
    max_t_set:
      name: "Maximum allowable CH water setpoint"

sensor:
  - platform: opentherm
    rel_mod_level:
      name: "Boiler Relative modulation level"
    t_boiler:
      name: "Boiler water temperature"
    ch_pressure:
      name: "Boiler Water pressure in CH circuit"
    t_dhw:
      name: "DHW temperature"
    t_dhw_set:
      name: "Domestic hot water temperature setpoint"
  - platform: homeassistant
    id: ch_room_temperature
    entity_id: sensor.ble_temperature_a4c1384e0601
    filters: 
      # Push room temperature every second to update PID parameters
      - heartbeat: 1s  

binary_sensor:
  - platform: opentherm
    ch_active:
      name: "Boiler Central Heating active"
    dhw_active:
      name: "Boiler Domestic Hot Water active"
    flame_on:
      name: "Boiler Flame on"
    fault_indication:
      name: "Boiler Fault indication"
      entity_category: diagnostic
    diagnostic_indication:
      name: "Boiler Diagnostic event"
      entity_category: diagnostic
    dhw_present:
      name: "Configuration: DHW present"
      entity_category: diagnostic
    ch2_present:
      name: "Configuration: CH2 present"

switch:
  - platform: opentherm
    ch_enable:
      name: "Boiler Central Heating enabled"
      mode: restore_default_on

climate:
  - platform: pid
    name: "Central heating"
    heat_output: t_set
    default_target_temperature: 20
    sensor: ch_room_temperature
    control_parameters: 
      kp: 0.4
      ki: 0.004
    deadband_parameters:
      threshold_high: 0.3°C       # deadband within +/-0.5°C of target_temperature
      threshold_low: -0.3°C
    visual:
      temperature_step: 0.5 °C

This happens with ESPHome 2023.2.4. Any idea what could trigger that error?

arthurrump / esphome-opentherm

TypeError: must be real number, not NoneType #14