old_contents: """Support for INSTEON fans via PowerLinc Modem."""
  import math
  
  from pyinsteon.constants import FanSpeed
  
  from homeassistant.components.fan import (
      DOMAIN as FAN_DOMAIN,
      SUPPORT_SET_SPEED,
      FanEntity,
  )
  from homeassistant.core import callback
  from homeassistant.helpers.dispatcher import async_dispatcher_connect
  from homeassistant.util.percentage import (
      percentage_to_ranged_value,
      ranged_value_to_percentage,
  )
  
  from .const import SIGNAL_ADD_ENTITIES
  from .insteon_entity import InsteonEntity
  from .utils import async_add_insteon_entities
  
  SPEED_RANGE = (1, FanSpeed.HIGH)  # off is not included
  
  
  async def async_setup_entry(hass, config_entry, async_add_entities):
      """Set up the Insteon fans from a config entry."""
  
      @callback
      def async_add_insteon_fan_entities(discovery_info=None):
          """Add the Insteon entities for the platform."""
          async_add_insteon_entities(
              hass, FAN_DOMAIN, InsteonFanEntity, async_add_entities, discovery_info
          )
  
      signal = f"{SIGNAL_ADD_ENTITIES}_{FAN_DOMAIN}"
      async_dispatcher_connect(hass, signal, async_add_insteon_fan_entities)
      async_add_insteon_fan_entities()
  
  
  class InsteonFanEntity(InsteonEntity, FanEntity):
      """An INSTEON fan entity."""
  
      @property
      def percentage(self) -> int:
          """Return the current speed percentage."""
          if self._insteon_device_group.value is None:
              return None
          return ranged_value_to_percentage(SPEED_RANGE, self._insteon_device_group.value)
  
      @property
      def supported_features(self) -> int:
          """Flag supported features."""
          return SUPPORT_SET_SPEED
  
      async def async_turn_on(
          self,
          speed: str = None,
          percentage: int = None,
          preset_mode: str = None,
          **kwargs,
      ) -> None:
          """Turn on the fan."""
          if percentage is None:
              percentage = 50
          await self.async_set_percentage(percentage)
  
      async def async_turn_off(self, **kwargs) -> None:
          """Turn off the fan."""
          await self._insteon_device.async_fan_off()
  
      async def async_set_percentage(self, percentage: int) -> None:
          """Set the speed percentage of the fan."""
          if percentage == 0:
              await self._insteon_device.async_fan_off()
          else:
              on_level = math.ceil(percentage_to_ranged_value(SPEED_RANGE, percentage))
              await self._insteon_device.async_fan_on(on_level=on_level)
  
new_contents: """Support for INSTEON fans via PowerLinc Modem."""
  import math
  
  from homeassistant.components.fan import (
      DOMAIN as FAN_DOMAIN,
      SUPPORT_SET_SPEED,
      FanEntity,
  )
  from homeassistant.core import callback
  from homeassistant.helpers.dispatcher import async_dispatcher_connect
  from homeassistant.util.percentage import (
      percentage_to_ranged_value,
      ranged_value_to_percentage,
  )
  
  from .const import SIGNAL_ADD_ENTITIES
  from .insteon_entity import InsteonEntity
  from .utils import async_add_insteon_entities
  
  SPEED_RANGE = (0x00, 0xFF)  # off is not included
  
  
  async def async_setup_entry(hass, config_entry, async_add_entities):
      """Set up the Insteon fans from a config entry."""
  
      @callback
      def async_add_insteon_fan_entities(discovery_info=None):
          """Add the Insteon entities for the platform."""
          async_add_insteon_entities(
              hass, FAN_DOMAIN, InsteonFanEntity, async_add_entities, discovery_info
          )
  
      signal = f"{SIGNAL_ADD_ENTITIES}_{FAN_DOMAIN}"
      async_dispatcher_connect(hass, signal, async_add_insteon_fan_entities)
      async_add_insteon_fan_entities()
  
  
  class InsteonFanEntity(InsteonEntity, FanEntity):
      """An INSTEON fan entity."""
  
      @property
      def percentage(self) -> int:
          """Return the current speed percentage."""
          if self._insteon_device_group.value is None:
              return None
          return ranged_value_to_percentage(SPEED_RANGE, self._insteon_device_group.value)
  
      @property
      def supported_features(self) -> int:
          """Flag supported features."""
          return SUPPORT_SET_SPEED
  
      @property
      def speed_count(self) -> int:
          """Flag supported features."""
          return 3
  
      async def async_turn_on(
          self,
          speed: str = None,
          percentage: int = None,
          preset_mode: str = None,
          **kwargs,
      ) -> None:
          """Turn on the fan."""
          await self.async_set_percentage(percentage or 67)
  
      async def async_turn_off(self, **kwargs) -> None:
          """Turn off the fan."""
          await self._insteon_device.async_fan_off()
  
      async def async_set_percentage(self, percentage: int) -> None:
          """Set the speed percentage of the fan."""
          if percentage == 0:
              await self.async_turn_off()
              return
          on_level = math.ceil(percentage_to_ranged_value(SPEED_RANGE, percentage))
          await self._insteon_device.async_on(group=2, on_level=on_level)
  
subject: Fix insteon fan speeds (#47603)