After many hours spend to snif the paquets here the first sharing. It was quite easy so far with the basic functions. I found 7 commands/informations out of 15. I add my investigation file

First we can find below the regular exchanged paquets every 6 sec. (Without any command)

Send by the SPX-WFG01 :

The A/C feedback

And now the command

So to here the list of adresses and content that I was able to catch.
 

There are still some question marks that have to be confirmed. And also 8 unkown information in the paquet. Maybe you have an idea ?

There are some functions that combined several of the command.

• The Leave Home function swith the A/C in heating mode, with 10°C  and Low fan
• Auto operating mode switch Operating mode and fan mode to auto

In addition, all the timer functions are managed by the the remote control itself. So only the basic commands (On/Off) are send by the remote control as scheduled previously.

According to the Hi-humo App description I should find also adresses releated to alarm functions. At this stage I'm not able to figure out how to trigger any alam from the A/C