Answer Kamaka, There could be several things that could be wrong with the unit not cooling. The first thing that you will want to check if it is just the refrigerator section that is not cooling would be look for a defrost issue. Check the coils in the freezer compartment and make sure that the coils are not clogged with ice. If they are then the issue would be either with the defrost heater, defrost controller or the control board. Read More... Answered by AppliancePartsPros.com | Monday, April 20, 2015