Why is my Audi A2 blowing hot air instead of cold air?

I recently noticed that my Audi A2 is only blowing hot air, even when I have the AC turned on. What could be causing this issue and how can I fix it?

The most likely culprit for this issue is a faulty blend door actuator. This is responsible for controlling the temperature in your car. You can try resetting it by disconnecting the battery for a few minutes and then reconnecting it. If that doesn't work, you may need to replace the actuator.

Another possible cause could be a leak in your AC system. If you notice any strange noises coming from your AC unit or if you see any leaks under your car, it's best to have a professional inspect it. They will be able to identify and fix any leaks.