I managed to do exactly what are you intending, but with an arduino. The most problematic part was about getting the IR codes from the remote. The Carrier unit I have at home uses very long ir commands (somewhat non-standard, twice the usual lenght) so I made an specific software to get them from the remote and dump the timings on screen. I haven’t managed to change the timings into hexadecimal codings, so I sent then to the AC unit replicating the timings. I fiddle on the Wio Link today and sought it ask for hexa. I don’t know if it is possible to convert the timings into hexa (non-standard) and I don’t know if it would receive the very long commands of AC control. Maybe it will require some aditional coding into the IR drive on Wio…