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 are good, replace the WiFi Module or Main PBA

Samsung Washers2018–present

Error Code AC4

Q: What does error code AC4 mean on a Samsung washers?

The WiFi module cannot communicate with the main board Connector connections between WiFi Module and main PBA are incorrect or loose; WiFi Module has faulty soldering; Main PBA fault

The 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 WiFi Module and main PBA are incorrect or loose; WiFi Module has faulty soldering; Main PBA fault

What actually causes this:

The WiFi module connector came loose or the module itself failed

First Thing to Check

Unplug the washer for 2 minutes and plug it back in — the washer can still wash without WiFi

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 are good, replace the WiFi Module or Main PBA