How do I fix error code AC on a Samsung dryers?

1. undefined: 1. Check wire terminals between PBAs for loose or damaged connections 2. undefined: 2. Inspect wire harness for pinched, cut, or corroded wires 3. undefined: 3. Check the PBA boards for visible damage 4. undefined: 4. If wiring is intact, replace SUB PBA first (more commonly at fault) 5. undefined: 5. If error persists after SUB PBA replacement, replace Main PBA

Samsung Dryers2024–present

Error Code AC

Q: What does error code AC mean on a Samsung dryers?

The dryer's internal parts aren't communicating properly Faulty Main PBA (main control board); Faulty SUB PBA (display board); Damaged or loose wire harness between Main PBA and SUB PBA

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

Main PBASUB PBA (Display PCB)Wire Harness

How to Fix

1
1. Check wire terminals between PBAs for loose or damaged connections
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 SUB PBA first (more commonly at fault)
5
5. If error persists after SUB PBA replacement, replace Main PBA

This Error Applies To

Samsung DV25B6800H Series Dryers (2024) (2024–present)

Service manual exact match: DV25B6900HW/A2Service manual exact match: DV90N62632X/EUService manual exact match: DV25B6800HW/ACService manual exact match: DV25B690*H*Service manual exact match: DV25B6800H*Service manual exact match: DV22N6850*