While this tutorial was really helpful, I would like to share my experience as it was niot a smooth process as I thought it would be.
ILearn.exe was never getting all the codes on the first attempt. I would get just a few commands (less than ten). For every fucntion I had to try 20-30 times before getting the correct codes. They would show up on 4 lines in the program. Most air conditioning / heat pump units use command structures that are quite long (i.e. sending back fan / heat mode, temperature etc. every time). I suspect this is why the codes were hard to be properly learned compared to my DVD player for instance.
What I did is copy and paste "as is" the codes without trimming. Then in Resource Editor in, I copied the codes. They would still show up in 4 lines, then I reunited the codes so they would all appear in a single line and added the ",
,\l" at the end. Also note that I was getting a weird small circle symbol before the "sendir" command which I erased. I could have used the trim fucntion but since the codes I was getting at first were not working (later found out later on the "numerous attemps to get codes" step I was skipping
https://forum.universal-devices.com/uploads/emoticons/default_icon_smile.gif
), I was suspecting the trim function corrupted the codes. Might not be the case at all, I'll try it later on.