I'm assuming that since you posted in the Blink subforum, that you have a Blink. However, the Blink doesn't have any "lights". The screen does go red in an error state, and if that's what you have, please tell us what the screen says. After a normal power outage, the Blink will generally put up a message counting down for 10 or 20 minutes before charging is allowed to resume. The idea being to stagger the start of car charging all over the neighborhood after a general outage...but this doesn't sound like that.
In general error situations, usually unplugging the car and plugging it back in is enough. If the Blink is really confused, you might want to unplug the Blink from the wall (or open the circuit breaker) for a bit, then plug it back in.
If you don't have a Blink...never mind.