I just started getting the following message when trying to turn on the device

[whittyhandle]

Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/websocket_api/commands.py", line 238, in handle_call_service
    response = await hass.services.async_call(
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/core.py", line 2067, in async_call
    response_data = await coro
                    ^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/core.py", line 2104, in _execute_service
    return await target(service_call)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/homeassistant/__init__.py", line 138, in async_handle_turn_service
    await asyncio.gather(*tasks)
  File "/usr/src/homeassistant/homeassistant/core.py", line 2067, in async_call
    response_data = await coro
                    ^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/core.py", line 2104, in _execute_service
    return await target(service_call)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/entity_component.py", line 272, in handle_service
    return await service.entity_service_call(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/service.py", line 878, in entity_service_call
    single_response = await _handle_entity_call(
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/service.py", line 948, in _handle_entity_call
    result = await task
             ^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/fan/__init__.py", line 305, in async_handle_turn_on_service
    await self.async_turn_on(percentage, preset_mode, **kwargs)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
TypeError: Purifier.async_turn_on() takes from 1 to 2 positional arguments but 3 were given
2023-12-22 18:56:00.420 DEBUG (MainThread) [custom_components.coway] Finished fetching coway data in 1.724 seconds (success: True)```

[whittyhandle]

I'd like to add that the integration did work as expected, and that it still allows me to shut the device off and the UI will also update when the device is powered on.

[RobertD502]

Thanks for bringing this to my attention. Looks like ~3 weeks ago someone on the Home Assistant side made changes to the Home Assistant Fan entity code. Previously, the async_turn_on method defined in the Coway fan.py file would call the async_turn_on method found in the Home Assistant fan entity code. Instead, now an additional validation method is called:

    @final
    async def async_handle_turn_on_service(
        self,
        percentage: int | None = None,
        preset_mode: str | None = None,
        **kwargs: Any,
    ) -> None:
        """Validate and turn on the fan."""
        if preset_mode is not None:
            self._valid_preset_mode_or_raise(preset_mode)
        await self.async_turn_on(percentage, preset_mode, **kwargs)

    async def async_turn_on(
        self,
        percentage: int | None = None,
        preset_mode: str | None = None,
        **kwargs: Any,
    ) -> None:
        """Turn on the fan."""
        await self.hass.async_add_executor_job(
            ft.partial(
                self.turn_on,
                percentage=percentage,
                preset_mode=preset_mode,
                **kwargs,
            )
        )

As a result, the line await self.async_turn_on(percentage, preset_mode, **kwargs) was sending both a percentage and preset_mode when the coway async_turn_on method was only defining the percentage argument. Just an unexpected bug introduced by Home Assistant, but I've made changes to the code to stop the error from happening.

Update to version 0.3.1 which I just released and it should stop you from running into the problem you described above.

[whittyhandle]

Thank you so much!