How do I fix error code AC4 on a Samsung washers?

1. undefined: 1. Check the connector connections between the WiFi Module and main PBA carefully 2. undefined: 2. Check for incorrect or loose connections 3. undefined: 3. Remove the WiFi Module and check for any faulty soldering 4. undefined: 4. If connections and module test normal, replace the Main PBA

Samsung Washers2024–present

Error Code AC4

The washer's WiFi module cannot communicate with the main board

Moderate

Address soon - your appliance may not work properly

Also displayed as: AC4

What This Means

Connector connections between the WiFi Module and main PBA are incorrect or loose; Faulty soldering on the WiFi Module; Wire disconnection between WiFi Module and Main PBA

What actually causes this:

The WiFi module connector is loose or the module itself has failed

First Thing to Check

Unplug the washer for 5 minutes and plug it back in to reset

Parts Involved

WiFi ModuleMain PBA

How to Fix

1
1. Check the connector connections between the WiFi Module and main PBA carefully
2
2. Check for incorrect or loose connections
3
3. Remove the WiFi Module and check for any faulty soldering
4
4. If connections and module test normal, replace the Main PBA