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

I recently purchased a used Audi A2 and have been having issues with the air conditioning. Whenever I turn it on, it either doesn't blow cold air or doesn't blow any air at all. What could be causing this and what steps can I take to fix it?

First, check your AC compressor to ensure it is functioning properly. If it is not, it may need to be replaced. Additionally, check the AC refrigerant levels and top them off if necessary. If these steps do not solve the issue, it may be a problem with the AC control module or wiring.

One common issue with Audi A2 air conditioning is a clogged cabin air filter. Check and replace this filter if needed, as a clogged filter can restrict airflow and cause malfunctions. You may also want to check the AC blower motor and resistor for any issues.