How to Troubleshoot Serial Communication (F11 error code) on a Kenmore Elite HE4T Washing Machine
Kenmore is the brand name of a line of appliances manufactured by the Whirlpool Corporation. Although the Kenmore Elite HE4T is a large capacity washing machine, it is still water-and energy-efficient enough to qualify as an Energy Star appliance.
Serial communication issues with the washing machine are designated by an “F11” error code, which indicates a communication problem between the Central Control Unit and the Motor Control Unit.
Disconnect the washing machine from its power source or turn off the circuit breaker. This will ensure that the appliance does not start inadvertently during your troubleshooting efforts and it will eliminate the possibility of the machine causing electrocution or starting a fire.
Remove the top of the washing machine. Move the top back slightly until the tabs are disconnected, and then take the top off.
Check the wire harnesses.
They are located on the back right side of the machine. Examine the wires to ensure they are firmly pressed into place. Also, inspect them to be sure that they do not show signs of damage or wear and tear.
The wire harnesses connect to the Central Control Unit, the Motor Control Unit and the motor itself. A loose or faulty wire leading to any of these components will hinder communication.
Examine the drive system for any damaged or worn parts.
Remove the back panel and inspect the Motor Control Unit. It is a board located at the bottom of the washing machine. Check the unit to be sure that is not defective.
Examine the Central Control Unit to see if it is defective. It is located under the top panel of the washing machine.
If these steps do not work, have a professional perform additional troubleshooting tips.