The protocols and method of transmission for air-conditioning systems is very different from controlling STB's.
Also, unlike AV equipment from the same manufacturer, almost all air-conditioning systems particularly if they have an LED display on the remote means they transmit all the settings to keep the remote display in sync with the actual unit.
I have produced some XML files for members who wish to control air-conditioning systems, but it is complex and time consuming and you need to capture every combination of user requirements. For example.
If you want medium fan speed and 25 degrees temperature, then you have one command to send all the other data as well as speed and temperature, if you change any variable, that requires yet another command. So, on the original remote you have just a few buttons, but on the Beo5 you will need many buttons, even if you limit yourself to the commonly required settings only.