A/C compressor not kicking on

JaxDad wrote:

Gcworth wrote:
A/C ran this summer (although it wasn't super cold)

Now the compressor will not kick on. The thermostat just keeps clicking and nothing happens. I just replaced all three capacitors today and still nothing. Cleaned the coil with foam cleaner at same time.

Any ideas? Bad thermostat maybe? Fan works when you put to on.

Thanks,

It wasn't very cold, now it won't cycle. If there's low (or no) refrigerant it won't allow the compressor to run so you don't burn it up running the system dry.

It ran today. I swapped the capacitors and let it sit on auto and it finally kicked on and ran for about an hour. It turned off them about 5 min later it came back on.

Where is the limiter switch at if it needs replacing? Also how can you recharge the coolant? I don't see any valves like on a car or house a/c unit.