The crockpot power light blinks when the unit has been plugged in, but it's not turned on.
However, several reasons can cause the lights to flicker, including:
Loose connections
A defective extension cord or power strip
Breakers tripped
Malfunctioning thermostat
Overheating or hot crockpot temperature
Wrong wirings or wiring overload
Problem with the electrical system in your home
The crock pot power light may also keep flashing if there has recently been an electricity spike or outage.