Cause
The vibration sensor is defective or has experienced excessive vibration.
Solution
Check for loose connections at the vibration sensor and Main PCB and possible damage to harness.
Check for 5Vdc on Red to Black wires.
First troubleshooting Steps
Location of the Vibration Sensor
The Vibration Sensor will be located at the front of the unit at the top left of the outer tub.
The harness for the Vibration Sensor will route through the control panel mounting bracket to the Main PCB.
Testing the Vibration Sensor
Check for 5Vdc on the Black wire to the Red wire if you have no voltage there with the unit powered on,
replace the Main PCB. If there is voltage there, replace the Vibration Sensor assembly.