Error Code AC
The dryer's internal parts aren't communicating properly
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: AC
What This Means
Faulty Main PBA (main control board); Faulty SUB PBA (display board); Damaged or loose wire harness between Main PBA and SUB PBA
What actually causes this:
A loose wire connection between the control board and display, or a power surge scrambled the electronics.
First Thing to Check
Unplug the dryer for 2 minutes, then plug it back in — this resets the electronics.
Parts Involved
How to Fix
- 1
1. First check the PCB and wire harness connections between Main PBA and SUB PBA
- 2
2. Inspect wire harness for loose, pinched, cut, or corroded wires
- 3
3. Replace the PCB if the problem persists
- 4
4. Replace SUB PBA first (more commonly at fault), then Main PBA if error continues
This Error Applies To
Samsung DV47CG3500 Series Dryers (2024) (2024–present)
Related Error Codes
The door switch isn't working properly
Your dryer is getting the wrong type of electrical power
The vent blockage test found a problem with your exhaust
Your dryer detected restricted airflow during a vent test
The dryer thinks the door is open while running
Your dryer's temperature sensor isn't reading correctly
Your dryer isn't heating properly or is overheating
A button on the control panel is stuck or shorted