Mini-Split ACs are very strange beasts, each keypress on the remote control formats ends the whole state to the AC. For example a TV Remote volume up button sends a volume up command to the. On a mini split AC a temperature up command would send something linked “cool, fan turbo, temp 42, vanes full sweep etc.”
So this remote maps a series of buttons for each one of the functions.
I have 3 sets of buttons:
Grey buttons - OFF and Dehumidify 66 F - 78 F, 2 degree intervals
Blue buttons - Cool 64F - 78F, 2 degree intervals
Red buttons - Hot 64F - 78F, 2 degree intervals
This follows pretty much the same lines as my previous TV remote for Broadlink devices. Dumb and brute force - but gets the job done, with minimal coding.
Follow the instructions for Broadlink and general setup from here:
The code is here