Ok, so the power just flickered on and off a couple times, and now the A/C isn't blowing cold air anymore. The fans are running in both units (condenser and the indoor unit), but air coming out of the vent isn't cool. This happened once before when the power went off, but turning the A/C off and on again fixed it. I'm in FL and it's getting really hot in here, and there's no one to call on a Sunday. Argh.
