AC not running and it's hot!!
 

both the blower and outside AC unit are not turning on. I checked the water overflow switch (it's been known to get stuck) and I've checked all the circuit breakers. I'm out of ideas.

I called a professional, but it's Memorial Day weekend and no one is answering the phone :)

Is there a light on the board flashing a code?

If theyre both not on i`d look at the T-stat sounds like a 24v problem
also make sure noone flipped the switch on teh side of the furnace..