I have a frigidaire sisde. I have a frigidaire sisde by side refrigerator model # FSC23F7TDW. My

Question

I have a frigidaire sisde by side refrigerator model # FSC23F7TDW. My Temperature control is reading the the freezer & fresh food temp in centigrade. How do I get the Temp display to read in Fahrenheit? I do believe at one time the display was reading the temp in fahrenheit. There is not a Fahrenheit/Centigrade mode switch on this model and my manual doesnt cover this subject.