Model Number: KSSS42QMX00
Brand: KitchenAid
Age: More than 10 years

I have a Kitchenaid built-in refrigerator that continues to flash the Over Temperature warning. It shows a freezer temperature of 28 and refrigerator temperature of 38. I think this a display problem not a temp problem. (The ice cream is frozen solid.). This has been flashing and beeping for months. (I hit the reset button constantly.). I have replaced both thermistors. No change. Any ideas?