If a Whirlpool Duet washing machine doesn't power up, test the line voltage and for blown fuses. A person should unplug the unit, and then listen to the central control unit for a click when the appliance is plugged back in. If there is a click, it's fine.
If the Whirlpool Duet does not start, a person should troubleshoot by opening and shutting the door, then trying again. If it still doesn't start, the owner should check the door locking unit with a multimeter. It could also be caused by bad wire harness connections or an issue with the LED assembly.
If the Whirlpool Duet does not stop, a person should look for an error code on the display and note it, then press the cancel button two times. The drain hose and drain pump filter should be checked for foreign objects, and then the central control unit should be checked for faults.
If the Whirlpool Duet does not accept input through the LED assembly, troubleshooting begins with pressing the cancel button twice. The unit should then be drained, and both the drain hose and drain pump filter should be checked for foreign objects. If that doesn't fix the issue, the LED assembly may need to be replaced, there may be an issue with the harness connections or the central control unit may be faulty.