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 wiring between PBAs; Loose or disconnected wire terminals between PBAs; Main PBA communication circuit failure; Display PBA communication circuit failure
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 wire terminals between PBAs for loose or damaged connectors
- 2
2. Inspect wire harness for pinched, cut, or corroded wires
- 3
3. Check the PBA boards for visible damage
- 4
4. If wiring is intact, replace the faulty PBA
Parts Commonly Needed for This Error
OEM part numbers confirmed by retailers
This Error Applies To
Samsung DV22N68 Series Dryers (2018) (2018–present)
Related Error Codes
The compressor temperature sensor detected a problem
The dryer thinks the door is open while running
A secondary temperature sensor is giving bad readings
A fourth temperature sensor is reading abnormally
A third temperature sensor is giving incorrect readings
The drum motor temperature sensor detected a problem
The heat pump compressor has stopped working
The drum motor controller isn't communicating properly