My freezer is displaying (-14 deg F) but the actual temperature is (25 deg F). However if I unplug and plug it back in then the display will show (25 deg F) ( accurate ) but after a few hours it will go back to showing (-14 deg F) while actual temp is 25 deg F. I tested the freezer temp sensor and the resistance is 1100 ohms @ (80 deg F) and 1330 ohms @ 32 degrees F. (not sure is my meter is accurate ). I found samsung temperature resistance charts that show that at 80 deg F = 4600 ohms and 32 deg F = 13,000 ohms, but don't now if this applies to my temp sensor. Any advice would be greatly appreciated.