F11
Whirlpool Serial Communication Error Between Control Boards

Washer-dryer combo stops mid-cycle and displays F11; may not respond to commands or may freeze.

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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 harness between user interface and main control, oxidized connectors, failed user interface board, failed main control board

How to Fix / Troubleshooting

Safety first: Unplug the appliance before removing any console or top panels.

Step-by-step checks:

  • Access control boards: Remove the top panel and, if needed, the front console to access the user interface (UI) board and main control board (CCU).
  • Inspect harness connections: Identify the communication harness between UI and CCU. Disconnect and reconnect each plug several times to wipe oxidation from contacts.
  • Check for damage: Look for pinched wires, broken conductors, or signs of moisture intrusion around the console.
  • Visual board inspection: Examine both boards for burnt components or corrosion.

When to replace: If reseating and inspecting wiring does not clear F11, one of the boards is likely defective. Whirlpool service literature often recommends replacing the main control board first, then the UI board if the problem persists.

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Repair Difficulty

Hard 4/5

Required Part

User Interface Control Board
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