Hi,
I've found your repository the first day of creation. I've tried the script with AEH-W4A1 but this module does not seem to have an open LAN port.
It has 8888 TCP open but it just replays everything you send to it.
With Wireshark I found it communicates to the servers with port 1024 TCP, but it is closed/filtered on LAN.

It communicates with a couple of servers, but the main one is:
hi-smartlife.topfuturesz.com (TCP Port 7820, App Hi-Smart Life)

I've been able to replay some TCP packets to turn on/off, change the fan speed, get and set the temperature, turn off the dimmer and other things.

I will try the new script, but upon sniffing traffic, I couldn't find any lan_key in the communication between the servers, so I think this module is out of luck with LAN control.
This module does not work with Hi-Smart AC.