Same issue as PurplePhoenix76, starting after 2021.12.1 update.
Attempted reinstall via HACS and server restart; no improvement.

Logger: miio.device
Source: /usr/local/lib/python3.9/site-packages/miio/device.py:153
First occurred: 5:43:41 PM (2 occurrences)
Last logged: 5:43:41 PM

Found an unsupported model 'zhimi.fan.za5' for class 'Device'. If this is working for you, please open an issue at https://github.com/rytilahti/python-miio/

Stopped working for me aswell

Hi,
I'm having the same problem, zhimi.fan.za5 stopped working after HA update.
I'm using version 0.5.3 and HA 2021.12.2

Logger: homeassistant.components.fan
Source: custom_components/xiaomi_miio_fan/fan.py:1676
Integration: Fan (documentation, issues)
First occurred: 12:44:13 PM (1 occurrences)
Last logged: 12:44:13 PM
Error while setting up xiaomi_miio_fan platform for fan

Traceback (most recent call last):
File "/usr/src/homeassistant/homeassistant/helpers/entity_platform.py", line 249, in _async_setup_platform
await asyncio.shield(task)
File "/config/custom_components/xiaomi_miio_fan/fan.py", line 445, in async_setup_platform
fan = FanZA5(host, token, model=model)
File "/config/custom_components/xiaomi_miio_fan/fan.py", line 1676, in init
self.model = model
AttributeError: can't set attribute

Same issue here

@syssi please fit it. thank you!

Same issue here. Hope the maintainer can look into it after the holiday period.

I've an idea what's going on and will prepare a fix. If you cannot wait and you are an owner of the ZA5 you could try the official integration (xiaomi_miio). The device should be supported now. The official integration supports config flow and can be added by the "add integration" button.

Please give it another try (version 0.5.4). The issue should be fixed now.