I would like to help you, but I just recently started studying HVACR Certified Technician programs in the USA and therefore, I can't give you any advice. Still, I would like to try fixing some problems with avionics regarding air conditioning and similar things because I am currently studying at one of the best trade schools in this area. Although I can't give you any advice or help, I think there will be specialists on this site who will definitely help you. But I will follow how this thread develops, which has become very interesting.