F11
Admiral Serial Communication Error Between Main Control and Motor/Interface

Washer intermittently stops and displays F11, may beep and not respond to commands

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Loose wiring harness between CCU and motor control, oxidized connectors, failing main control board, failing user interface board

How to Fix / Troubleshooting

Safety first: Unplug the Admiral washer before accessing the console or control area.

Step-by-step checks:

  • 1. Remove top and console: Take off the top panel, then remove screws securing the console. Carefully tilt the console forward to access the user interface board and wiring.
  • 2. Reseat console connectors: Disconnect and reconnect the ribbon cable and harnesses between the console and main control. Inspect for corrosion or bent pins.
  • 3. Inspect main control connections: At the CCU, unplug and firmly reseat all connectors, especially those labeled for motor control and user interface.
  • 4. Check harness routing: Ensure wiring is not pinched, rubbed through, or exposed to moisture. Repair or replace damaged sections.
  • 5. Visual board inspection: Look for burnt components or cracked solder joints on both the main control and console board.
  • 6. Test operation: Reassemble the console, plug in the washer, and run a diagnostic or quick wash cycle to see if F11 reappears.

When to call a technician: Persistent F11 after reseating and inspecting wiring usually indicates a failing control board that should be replaced by a professional.

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Repair Difficulty

Hard 4/5

Required Part

Main Control Board (CCU)
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