Samsung Washers2018–present

Error Code AC4

The washer's WiFi module lost communication with the main board

Moderate

Address soon - your appliance may not work properly

Also displayed as: AC4

What This Means

Signals between WiFi Module and main PBAs not sensed due to communication error; Incorrect or loose connector connections between WiFi Module and main PBAs; WiFi Module has faulty soldering

What actually causes this:

The WiFi module connector came loose or the module itself failed

First Thing to Check

Unplug the washer for 60 seconds and plug it back in to reset the electronics

Parts Involved

WiFi ModuleMain PBA

How to Fix

  1. 1

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

  2. 2

    2. Check for incorrect or loose connections

  3. 3

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

This Error Applies To

Samsung WF45K6 Series Washers (2018) (2018–present)

Service manual exact match: WF45K6500AV/A2Service manual exact match: WF45K6500AW/A2Service manual exact match: WF45K6200AZ/A2Service manual exact match: WF45K6200AW/A2

Need more help with your Samsung washers?