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 Display PCB (SUB PBA); Damaged or loose wire harness between Main PCB and Display 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. Check the PCB and wire harness connections between Main PCB and Display PCB
- 2
2. Inspect wire harness for pinched, cut, or corroded wires
- 3
3. If wiring is intact, replace the PCB that appears to have the problem
- 4
4. If the problem persists, replace the other PCB
This Error Applies To
Samsung DV50R8500 Series Dryers (2019) (2019–present)
Related Error Codes
Your dryer's temperature sensor isn't reading correctly
A secondary temperature sensor is giving bad readings
A button on the control panel is stuck or shorted
The dryer thinks the door is open while running
Your dryer is getting the wrong type of electrical power
Your dryer is getting the wrong voltage from the outlet
The door switch isn't working properly
Your dryer isn't heating properly or is overheating