Washer stops and displays F11, may not spin or may stop mid-cycle, often with clicking from control area.

Safety first: Unplug the washer before accessing internal components. Avoid flexing circuit boards excessively.

Step-by-step:

• Access controls: Remove the top panel to access the CCU and the lower rear or base panel to access the MCU (location varies by model).
• Check harness: Locate the multi-wire harness connecting CCU to MCU. Unplug both ends, inspect for corrosion or damaged pins, and reseat firmly.
• Inspect boards: Look for burnt or cracked components on both CCU and MCU. A burnt smell or visible damage indicates replacement is needed.
• Secure wiring: Ensure the harness is routed away from sharp edges and moving parts. Use cable ties if necessary to prevent chafing.
• Test operation: Reassemble enough to run a test cycle. If F11 persists, replace the motor control board first. If still unresolved, replace the main control board.

Note: Because this error involves multiple boards, professional diagnosis can save on unnecessary parts replacement.