Temperature Settings The optimum temperature range for storing fresh food is between 38 - 40 degrees Fahrenheit. If your food is freezing, then it is possible that your fridge's temperature setting was accidentally set too low. This is a common problem that can lead to your refrigerator freezing food.
The air vent usually is at the rear wall, a reason that items at the rear of shelves seem more likely to freeze. Overcrowded shelves can create poor air circulation, trapping the cold air near the back and allowing warmer air near the front. Tall items placed in front of the air vents may trap cold air near the rear.