Samsung Washers2024–present

Error Code AC

The control boards inside the washer can't communicate

Moderate

Address soon - your appliance may not work properly

Also displayed as: AC

What This Means

Wire connections between sub and main PBAs disconnected; Sub PBA short-circuited from moisture; Main PBA communication circuit faulty

What actually causes this:

A wire came loose between the two control boards, or moisture got inside

First Thing to Check

Unplug the washer for 60 seconds and plug it back in

Parts Involved

Sub PBAMain PBAWire Harness

How to Fix

  1. 1

    1. Check wire connections and terminal contacts between sub and main PBAs

  2. 2

    2. Check for disconnected wires

  3. 3

    3. Check if sub PBA is short-circuited from moisture

  4. 4

    4. If main PBA's communication circuit is faulty, replace it

This Error Applies To

Samsung WA44A3205AW Series Washers (2024) (2024–present)

Service manual exact match: WA44A3205AW/A4

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