Anyone any progress by sending the same signal as the remote or adding hardware, like a ESP32, to the unit itself.

I looking forward to the results.
I have the same Orcon unit with a CO2 sensor/remote and the basic remote.
Now and then the remote refuse to work, also with new batteries, so it ...

I have the same machine and want to add it to my home automation.
I hope someone can share some more documentation about how he implemented it.
I search for a solution but I can't find any good example.