Cause 1
Dispenser Control Board
The dispenser control board governs most of the functions of the dispenser system. If the control board is faulty, it may stop supplying power to the entire dispenser system. If only one dispenser part is not working, test each of the dispenser components before testing the control board. It is more likely that a single part has failed. If the entire dispenser system is not working, the control board is more likely to be at fault.
Cause 2
Dispenser Switch
The dispenser switches send voltage to the dispenser. If one of the dispenser switches is defective, the dispenser will not work. To determine if a dispenser switch is defective, use a multimeter to test each switch for continuity. If a dispenser switch does not have continuity, replace it.
Cause 3
Dispenser Actuator
The dispenser actuator interacts with the dispenser switches, which power the auger motor and other dispenser components. If the dispenser actuator is broken, it may not activate the switches properly or at all. Inspect the dispenser actuator—if it is broken, replace it.