The fan is very important in the operation of your central air. The fan basically funnels heat away and the compressor circulates the coolant in your system. If its not working than your AC will not cool.
It sounds to me like you have a burned out compressor motor. That will definately need to be fixed. I hope this helped you.
If this answered your question, please hit the Accept button. It was a pleasure serving your needs. Have a great night.