F6E2 — Communication Error: UI Cannot Hear ACU

What does F6E2 mean?

This fault is displayed when communication between the User Interface (UI) and the Analog Control Unit (ACU) has not been detected. This means the UI is not receiving signals from the main control board.

• Loose or damaged UI harness connection.
• Faulty user interface (UI) board.
• Faulty analog control unit (ACU) or main control board.

Click steps to track your progress.

1. 1

   Unplug the washer and carefully check the continuity and secure fit of the UI harness connections.

2. 2

   Ensure all wire harness connections between the UI and ACU are firmly attached.

3. 3

   Refer to Test #1: Main Control (page 6-5) and Test #4: Keys and Encoders (page 6-11) for diagnostic steps.

4. 4

   If the issue persists after checking connections, the UI or main control board may need replacement.