How can I troubleshoot the air conditioning system in my Audi 80?

I've been having issues with my Audi 80's air conditioning not cooling properly. I've checked the Freon levels and they seem okay. What else could be causing this problem?

First, I would recommend checking the air filters for any dirt or debris buildup. This can often cause the air conditioning system to work less efficiently. In addition, make sure the condenser fan is functioning properly.