F1E3 — Mismatch of ACU and UI

What does F1E3 mean?

This fault is displayed when the user interface (UI) identification does not match the expected value stored in the main control board (ACU). This typically indicates an incompatibility between the two main electronic components.

• Incorrect user interface or main control board installed.
• Software incompatibility between the UI and ACU.
• Communication failure between the UI and ACU.

Click steps to track your progress.

1. 1

   Verify that the installed ACU and UI part numbers are correct for your specific washer model.

2. 2

   If either component was recently replaced, ensure the new part is fully compatible.

3. 3

   Refer to the Key Activation & Encoder Test (page 5-4) for checks related to the UI.

4. 4

   Perform a system reset by unplugging the washer for 30 seconds, then replug.