Error Code AC2
An internal circuit board communication link has failed.
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: AC2
What This Means
I/O Board communication error; Sub PBA short-circuited due to moisture; Wire disconnection between sub and main PBAs
What actually causes this:
A loose connector or moisture on the control panel circuit board is breaking the communication link.
First Thing to Check
Unplug the washer for 60 seconds and try again.
Parts Involved
How to Fix
- 1
1. Check wire connections and terminal contacts between sub and main PBAs
- 2
2. Check for disconnected wires
- 3
3. Check whether sub PBA is short-circuited because of moisture
- 4
4. If main PBA communication circuit is faulty, replace it
Parts Commonly Needed for This Error
OEM part numbers confirmed by retailers
This Error Applies To
Samsung WW22N6850QX Series Washers (2018) (2018–present)
Related Error Codes
The incoming water is too hot for the selected delicate cycle.
The main board and motor inverter have lost communication.
The sensor that measures how much detergent is left has failed.
The sensor that measures how much fabric softener is left has failed.
The washer cannot detect the water level correctly.
The washing machine motor is not spinning properly.
The motor is drawing too much power or not reaching the right speed.
The washer is not getting water or not getting enough water.