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A/C unit. Inside rotating fan won't come on
I noticed how hot it was and the inside temp has higher than what the thermostat was on. The outside unit runs fine. When I turn unit on seems like inside wants to come on ( I hear air through coils) but fan won't turn. I tried to manually turn it and it turns freely. Any suggestions
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( I hear air through coils) Freon perhaps? Sounds like a bad Capacitor. Does the motor try and start? Will it spin with power on and a nudge to the cage? Capacitors are common to fail in very hot weather. Easy to replace and typically inexpensive. Look for a cylinder or small box, silver or black, with 2-3 wires, some more, coming out that go to the motor. If it is bulged or leaking, that's the problem. If you decide to DIY, short the capacitor ends to ground with an insulated tool. Match the voltage and micro farad capacity. Otherwise, an HVAC tech should be able to install for $100-$150 depending on capacitor cost, weekend, rush, etc. or so. Most of which will be service call.
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There is no way to guess at why the fan won't turn. See if you can turn it by hand to find out if it's locked up, first. Then you will have to see if it's getting power through the fan relay. It could be the fan relay, thermostat, burned out motor windings, bad capacitor, or a loose wire, to name most causes. You will have to get a volt/ohm meter and learn to use this easy-to-use tool. You can find a good one at Radio Shack, Home Depot, Lowe's, and many other stores. Here are some schematics: https://dl.dropboxusercontent.com/u/...20Diagrams.zip
Manual: https://dl.dropboxusercontent.com/u/...e%20Manual.pdf AC Troubleshooting: https://dl.dropboxusercontent.com/u/...leshooting.pdf This stuff is very easy to do with a good meter. Never use the ohm meter with power on (Discharge a capacitor before testing.) and buy a meter with auto-protection against use of ohm meter with power on or buy a few correct fuses for the meter since people using a meter for the first time will usually blow a fuse using the ohm meter with power on a line. Check the pawn shops for a good Fluke meter. It's money well spent. 
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