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. Check wire harness connection between Main PBA and SUB PBA for loose or damaged connectors
- 2
2. Inspect wire harness for pinched, cut, or corroded wires
- 3
3. Contact a Samsung service center
This Error Applies To
Samsung DV25B6900E Series Dryers (2024) (2024–present)
Related Error Codes
Your dryer is getting the wrong type of electrical power
Your dryer is getting the wrong voltage from the outlet
Your dryer isn't heating properly or is overheating
Your dryer's temperature sensor isn't reading correctly
A secondary temperature sensor is giving bad readings
The door switch isn't working properly
Your dryer vent is about 80% blocked
Your dryer vent is over 90% blocked — needs immediate cleaning