How do I fix error code AC3 on a Samsung washers?

1. undefined: 1. Check the connector connections between the DR Module and main PBA carefully 2. undefined: 2. Check for incorrect or loose connections 3. undefined: 3. Remove the DR Module and check for any faulty soldering 4. undefined: 4. If connections are fine, replace the DR Module or main PBA

Samsung Washers2024–present

Error Code AC3

An internal module has lost communication with the main board

Moderate

Address soon - your appliance may not work properly

Also displayed as: AC3

What This Means

Communication error between DR Module and main PBA; Incorrect or loose connections between DR Module and main PBA; Faulty soldering on DR Module

What actually causes this:

A connector inside the washer came loose during vibration or shipping

First Thing to Check

Unplug the washer for 60 seconds and plug it back in — if the error returns, it needs service

Parts Involved

DR ModuleMain PBAWire Harness

How to Fix

1
1. Check the connector connections between the DR Module and main PBA carefully
2
2. Check for incorrect or loose connections
3
3. Remove the DR Module and check for any faulty soldering
4
4. If connections are fine, replace the DR Module or main PBA

Parts Commonly Needed for This Error

OEM part numbers confirmed by retailers

This Error Applies To

Samsung WF45A6400A Series Washers (2024) (2024–present)

Service manual exact match: WF45A6400AV/USService manual exact match: WF45A6400AW/USService manual exact match: WF45A6400AC/USService manual exact match: WF22C6400AV/AXService manual exact match: WF22C6400AW/AXService manual exact match: WF22C6400AP/CO