How can I fix the climate control system in my Audi 80?

I have been having issues with the climate control system in my Audi 80. No matter what setting I choose, the air always blows hot. What could be causing this issue and how can I fix it?

It sounds like there may be an issue with your temperature sensor. I would suggest checking it for any damage or malfunctions, and possibly replacing it if necessary. Additionally, make sure to regularly clean or replace your air filters to ensure proper air flow.