I have a Samsung refrigerator model# RB2044SL/XAA. It recently started to display the wrong temperatures (fridge and freezer), when you power it off and back on it displays the correct temps and will run until it hits or thinks it has hit the target temps. The compressor will not turn on again until the power has been cycled and the display shows the new temperature readings which are higher than the target temperatures. Do I have a control board problem or did both the fridge and freezer temperature sensors go out?
Sounds more like a board problem.
By resetting you can get it to rad the correct temperatures so the sensors/thermistors must be OK.