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

1. undefined: 1. Check the wire connections and terminal contacts between the sub and main PBAs 2. undefined: 2. Check for disconnected wires 3. undefined: 3. Check whether the sub PBA is short-circuited because of moisture 4. undefined: 4. If the main PBA communication circuit is faulty, replace it 5. undefined: 5. Remove the sub PBA C/Panel and check for any faulty soldering

Samsung Washers2017–present

Error Code AC

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

The washer's control boards aren't talking to each other Signals between sub and main PBAs not sensed; Incorrect or loose connector connections between sub and main PBAs; Faulty soldering on sub PBA; Sub PBA short-circuited due to moisture; Main PBA communication circuit fault; Incorrect wire connections between sub and main PBAs

The washer's control boards aren't talking to each other

Moderate

Address soon - your appliance may not work properly

Also displayed as: AC

What This Means

Signals between sub and main PBAs not sensed; Incorrect or loose connector connections between sub and main PBAs; Faulty soldering on sub PBA; Sub PBA short-circuited due to moisture; Main PBA communication circuit fault; Incorrect wire connections between sub and main PBAs

What actually causes this:

A wire connector between the control boards came loose, or moisture got into the electronics

First Thing to Check

Unplug the washer for 5 minutes, then plug it back in — this can reset the communication

Parts Involved

Sub PBAMain PBAWire Harness

How to Fix

1
1. Check the wire connections and terminal contacts between the sub and main PBAs
2
2. Check for disconnected wires
3
3. Check whether the sub PBA is short-circuited because of moisture
4
4. If the main PBA communication circuit is faulty, replace it
5
5. Remove the sub PBA C/Panel and check for any faulty soldering