Maytag Refrigerator Display Stuck on -1 and 37 degrees

Hello, my Maytag Refrigerator (Freezer on Bottom) has a problem. The temp display in the refrigerator section stays stuck on -1 freezer and 37 refrigerator. I have unpluged it for 10 mins and it reset itself, but, within 3 days it went back to -1 freezer and 37 refrigerator. How do I check this problem?
Any help would be gratefull.
Thank You