The part(s) or condition(s) listed below for the symptom Refrigerator ice and water dispenser not working are ordered from most likely to least likely to occur. Check or test each item, starting with the items at the top of the page.
The dispenser control board governs most of the functions of the dispenser system. If only one dispenser part is not working, it is probable that an individual part has failed. In this case, test each of the dispenser components before testing the control board. If the entire dispenser system is not working, the control board is more likely to be at fault.
The main control board might be defective. However, the control board is rarely at fault for this problem. Before replacing the control board, first check all of the dispenser components. If none of the dispenser components are defective, consider replacing the main control board.