Hi, First,let me say that I am ignorant in this area.
I have a older heat/air system and had new motor installed 2 yrs ago. (2nd time in 5 yrs)
Always say the bearings are shot. Anyway, went to switch from heat to air again this year,and the same thing. Inside blower working, fan outside not coming on. Any help is appreciated...

Thanks -ron

Could just be the capasitor.

http://img.diytrade.com/cdimg/377701/1688670/0/1132835703/AC_Capacitor.jpg


Look to see if there is a burnt wire, or the top is swollen. It will be in the electric pannel on your outdoor unit.