Error Code AC4

The WiFi module can't communicate with the main board

Moderate

Address soon - your appliance may not work properly

Also displayed as: AC4

What This Means

Signals between the WiFi Module and main PBA are not sensed; Incorrect or loose connections between the WiFi Module and main PBA; Faulty soldering on the WiFi Module

What actually causes this:

The WiFi module connector came loose — the washer still works for washing, just not smart features

First Thing to Check

Check if the washer still runs normal wash cycles — if it does, only the smart features are affected

Parts Involved

WiFi ModuleMain PBAWire Harness

How to Fix

  1. 1

    1. Check the connector connections between the WiFi Module and main PBA carefully

  2. 2

    2. Check for incorrect or loose connections

  3. 3

    3. Remove the WiFi Module and check for any faulty soldering

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