Brightness keeps changing on it's own

[devnull-octovon]

AirCube integrated with Home Assistant and Quirk: zigpy.quirks.v2.CustomDeviceV2. This is happening on two different AirCubes.

Brightness changes on it's own. I reset to 50, it changes to 60. Or 12. Or 30...

I have 2 units. They both misbehave in this way, but not to the same brightness nor at the same time.

These units are not used in any HA integration or action.

The image below shows that it was at 10. I reset it to 50 at 17:30. It reset to 10 on it's own at 11:30 (no HA actions are running at that time). When I attempted to set the default, it went to 100.

I've tried setting to 50 and pressing the button on the back (single click), as I've heard that sets the default. It does not seem to help.

1. Can you point me directions on how to set the default?
2. Should the default be overriding the HA setting?

[cachamber]

The button on the back sets the default brightness levels.

From the README.md:

Action	What It Does
Short press	Cycle brightness (off, 10%, 30%, 60%, 100%)
Hold 3 seconds	Enter Zigbee pairing mode

I believe you might be experiencing a firmware restart - where the firmware is restarting and setting the brightness to the default setting that you've specified via the button - in this case 10%. The button writes the level to the device, so that on the next boot/restart that level is restored. The decision to not save the HA commanded brightness was a design decision to save the wear on the device's storage - as there are a limited number of write cycles.

[devnull-octovon]

Thanks. Why would the firmware be restarting? Is HA triggering this? Or is the device doing that on its own?