Chosen Solution

@ladytech I have the same issue. I have noticed that after unplugging and plugging back in, the temp display has changed significantly. Like before unplugging it says -5 freezer 55 fridge and then after unplug/replug it will say -1 freezer 59 fridge. Too short a time for temp to change that much.

@ssluter if the sensor located on the evaporator coil was incased in ice, it should be replace. It could give a false temp reading to the board. Unplugging will reset the board.