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; Damaged or loose wire harness between main PCB and display PCB; Corroded or oxidized connector pins
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 for loose or damaged connections
- 2
2. Inspect wire harness between main PCB and display PCB for pinched, cut, or corroded wires
- 3
3. Reconnect all harness connectors securely
- 4
4. If wiring is intact, replace the PCB — try display PCB first
- 5
5. If the problem persists after display PCB replacement, replace the main PCB
Parts Commonly Needed for This Error
OEM part numbers confirmed by retailers
This Error Applies To
Samsung DV45R6 Series Dryers (2019) (2019–present)
Related Error Codes
Your dryer is getting the wrong voltage from the outlet
Your dryer is getting the wrong type of electrical power
A button on the control panel is stuck or shorted
The dryer thinks the door is open while running
The door switch isn't working properly
Your dryer's temperature sensor isn't reading correctly
Your dryer isn't heating properly or is overheating
A secondary temperature sensor is giving bad readings