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

The air conditioning in my Audi 80 is not cooling properly. It blows out only warm air. I've checked the refrigerant levels and they seem to be fine. What else can I do to fix this issue?

First, try cleaning the air conditioning vents and filters. Dust and debris can accumulate over time and block the airflow, leading to poor cooling performance. Also, check the AC compressor and ensure it is functioning properly. If these solutions do not work, it might be a problem with the AC system itself and you may need to take it to a mechanic for further inspection.