Devices become after a while "Unavailable" and couldn't be restored

[StefanoA70]

HA版本

2024.12.1

集成版本

0.3.22

设备类型及型号

Air Conditioner 230J6135 (44204) by Midea

使用的App

Midea App (android) chinese version

问题详细描述

Installation and initial configuration of the integration went without any issue, I can see and control my 4 AC units.
After one day or so one unit (device in HA) became "Unavailable", after another two days another one too.
Another two devices (also Midea AC units) are still working fine in HA, can see and control from there

I don't know how to restore/reconnect them to the integration. In the Midea native App I can still see and control all 4 AC units, so they're connected to internet

As per instructions I have fixed their IP address in the router as static

The logs

home-assistant_midea_ac_lan_2024-12-12T06-15-13.345Z.zip

[StefanoA70]

Just an update:
out of the blue and without and reason I can imagine the two missing AC units have returned back to online in HA

I'd really like to understand why sometimes they become "Unavailable"

[StefanoA70]

Then again two devices became unavailable without any reason I can understand
I can always access and control all devices through the Midea original app, they're online and properly connected to the wifi

[rafkra]

Read issue #595
In my case: the IP address of the device changed. HA uses a fixed IP address, but the original app does a device discovery every time. If you can't set your devices to a fixed IP address, there could be an option in your Wifi router to give your devices fixed IP adresses via DHCP.

[StefanoA70]

I assigned static/fixed IPs to my ACs and it looks like they're each actually on the expected, predefined IP
I don't think this is the reason... also again they're going on and off randomly in HA evry few days