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's communication circuit is faulty, replace it

Samsung Washers2024–present

Error Code AC

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

The washer's control boards cannot talk to each other Signals between sub and main PBAs not sensed; Incorrect wire connections between sub and main PBAs; Sub PBA short-circuited due to moisture; Main PBA communication circuit fault

The washer's control boards cannot talk 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 wire connections between sub and main PBAs; Sub PBA short-circuited due to moisture; Main PBA communication circuit fault

What actually causes this:

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

First Thing to Check

Turn off the washer at the circuit breaker, wait 60 seconds, then turn it back on

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's communication circuit is faulty, replace it