How to fix a non-functioning AC in an Audi 80?

My Audi 80's AC is not working. What could be the cause and how can I fix it?

Firstly, check the fuse for the AC system to see if it's blown. If it is, replace it and see if that resolves the issue. If not, it could be a problem with the AC compressor or a leak in the system. It's best to take it to a professional mechanic for further diagnosis and repair.

It's possible that the refrigerant levels in your AC system are low. You can try adding some refrigerant yourself, but if you're not experienced with this, it's better to take it to a mechanic. Also, it's important to regularly maintain your AC system to avoid future issues.