Core issue: Whirlpool Duet washer model number GHW9100LW2 with an error code F11.
Resolution: Error code F11 = Serial Communication Error. Error codes can be caused by a Power Surge or other electrical anomaly,attempt to return the washer to operation by following the Hard Reset procedure below. In some cases the control can be non-functioning or may not accept activation from the control panel. To clear and restart the control follow the these steps:
Unplug or turn the circuit breaker off for 30 seconds.
Reconnect the unit to the power source by turning the breaker back on or plugging the unit back into the wall outlet.
Press the Pause/Cancel/Stop button twice to clear the display.
Start a short cycle to check the operation of the machine by selecting a cycle and pressing and holding the start button until the machine starts.
Note: If the Hard Reset does not work, there may be an internal failure with the washer, that requires service.
: General information for resolution to this problem, is based on information
provided in question. Contact certified technician if problem persist.