How do I troubleshoot a malfunctioning air conditioning system in my Audi A2?

My air conditioning system in my Audi A2 is no longer blowing cold air. I've checked the refrigerant levels and they seem to be fine. What could be causing this issue and how can I fix it?

First, check the compressor to make sure it is functioning properly. If it is not, you may need to replace it. If the compressor is fine, then the issue could be with the condenser or evaporator. These components can become clogged or damaged, causing the air conditioning to not work properly. It is best to take your car to a mechanic to properly diagnose and fix the issue.