Customer Questions and Answers for Defrost Control Board by Whirlpool

David, Is there a heavy frost or ice build up on the back of the freezer wall ? This would indicate a defrost issue . But your first check needs to be at the condenser 61005452 and condenser fan 833697. You'll need to move the refrigerator away from the wall, unplug the power cord,and remove the lower rear access panel. You'll need to clean out any debris on the inside and outside of the condenser, the fan, and the compressor, and the area. plug the power cord back in, turn the refrigerator on and make sure the fan runs at a high speed and moves the air through the condenser and over the compressor to cool it.