Many Samsung freezer refrigerators have a digital temperature display inside of the appliance. If you leave the appliance doors open or place a large amount of hot food into the refrigerator, the temperature display may begin to blink. The display usually resets itself after a few minutes, but you may need to manually reset it.
Unplug the refrigerator.
Wait 10 minutes.
Plug it back into the wall. The refrigerator is reset, and the display will stop blinking.