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

The control panel and main circuit board 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 are not sensed due to communication check; Incorrect or loose connector connections between sub and main PBAs; Faulty soldering on sub PBA C/Panel

What actually causes this:

A loose wire connector between the control panel board and the main board, often from vibration over time.

First Thing to Check

Unplug the washer for 60 seconds, then plug it back in and try again.

Parts Involved

Sub PBAMain PBAWiring 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

This Error Applies To

Samsung WA51A5505A Series Washers (2024) (2024–present)

Service manual exact match: WA51A5505AVService manual exact match: WA51A5505APService manual exact match: WA51A5505AWService manual exact match: WA49B5205AWService manual exact match: WA52A5500AVService manual exact match: WA52A5500APService manual exact match: WA52A5500AWService manual exact match: WA54A7305AV+2 more