Hello from JA
My name is Woody.
I will be glad to assist you today.
I have been servicing ALL Major Brands of Appliances for 35 Years,
and have over 100,000 in home repairs and over 80,000 internet repairs under my belt.
The F-11 is a serial communication error , which means Communication between the Central Control Unit (CCU) and the Motor Control Unit (MCU) cannot be sent correctly,
Check wire harness connections to the MCU, the motor, and Central Control Unit (CCU).
Check the drive system for any worn or failed components.
If all connections are good then I recommend to replace the MCU (motor control unit).
The link below is to the part you will need from a highly recommended company rated A+ with the Better Business Bureau.
They offer a 100% money back guarantee, EVEN ON INSTALLED ELECTRICAL PARTS, for an entire year!
They are the only company to allow returns on installed parts for a refund and offer a FULL ONE YEAR WARRANTY!
If you have any questions just reply back.