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 PCB; Faulty Sub PCB (display board); Damaged or loose wire harness between Main PCB and Sub PCB
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 PCB and Sub PCB
- 2
2. Inspect wire harness for pinched, cut, or corroded wires
- 3
3. Replace the PCB if the problem persists
- 4
4. If wiring is intact, replace Sub PCB first (more commonly at fault), then Main PCB if error persists
This Error Applies To
Samsung DV40J3000E Series Dryers (2014) (2014–present)
Related Error Codes
The door switch isn't working properly
A button on the control panel is stuck or shorted
Your dryer isn't heating properly or is overheating
Your dryer's temperature sensor isn't reading correctly
The dryer thinks the door is open while running
Your dryer is getting the wrong voltage from the outlet
Your dryer is getting the wrong type of electrical power
The second temperature sensor is reading incorrectly