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

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

Samsung Washers2018–present

Error Code AC

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

The washer's control panels can't talk to each other Connector connections between sub and main PBAs are incorrect or loose; Sub PBA has faulty soldering; Sub PBA is short-circuited because of moisture; Incorrect wire connections between sub and main PBAs; Main PBA communication circuit is faulty

The washer's control panels can't talk to each other

Moderate

Address soon - your appliance may not work properly

Also displayed as: AC

What This Means

Connector connections between sub and main PBAs are incorrect or loose; Sub PBA has faulty soldering; Sub PBA is short-circuited because of moisture; Incorrect wire connections between sub and main PBAs; Main PBA communication circuit is faulty

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 — if the error returns, it needs service

Parts Involved

Sub PBAMain PBAWire Harness

How to Fix

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