replaced ccu same issue.... but ....

[fiercefun]

i have replaced ccu on my whirlpool front load duet washer i am running test and c01 is fault but i dont have a flow meter... so why fault there... plus still f11 when door locks then goes through soap etc then waits and f11 fault??? any help??

[JWWebster]

F11 Serial communication error
Communication between the Central Control Unit (CCU) and the
Motor Control Unit (MCU) cannot be sent correctly.
Possible causes/procedure:
1. Unplug washer or disconnect power.
2. Check wire harness connections to the MCU, the motor, and
Central Control Unit (CCU).
3. Check the drive system for any worn or failed components.
4. Plug in washer or reconnect power.
5. Verify CCU operation by running a Diagnostic test or any
cycle.
6. Check the MCU by looking for operations of the drive motor.
7. Check the drive motor for powered rotations.
8. Check that the serial harness at the MCU is not mounted
upside down. The wires should be to the left when facing the
MCU connectors.