Did you check the unit outside to see if there was something blocking the fan? I had a stick wedged in mine one year that messed it up. Also, if it has a condensate pump, you may want to check that. If it gets clogged (or isn't plugged in...yeah, I've done that), it will shut down the unit.
If it keeps acting up and you have trouble getting someone out there in a reasonable time frame, I have a reliable and very fair HVAC guy. If you're interested, drop me a PM and I'll pass along his information.
Thread related, getting a nice shower in Ellicott City now, and I'm hoping that the stuff behind it stays together to give home a good soaking.