Have a/c problems

What is your question?

I have a manual dual a/c controller. A couple months ago the lights went out on the controller but still worked fine. Then right after that is was blowing hot on the driver side and cool on the passenger side. But after starting it over and playing with the controller it started working fine again. Now it's not blowing at all and making a ticking sound behind the controller or passenger side dash. Does anyone know what is causing this or what I need to fix?