Samsung Dryer AC Error: Board communication error
If your Samsung appliance is showing this error, you’re dealing with a samsung dryer ac error. Here’s everything you need to know about diagnosing and fixing this issue. Samsung ac error code — here is what you need to know. What Does Error Code AC Mean on a Samsung Dryer? Error code AC on Samsung […]
No
DIY Fixable
From $180
Typical Repair Cost
45-90 min
Pro Repair Time
Quick Assessment
Answer to continue safely
Is it safe to keep using?
Maybe. If AC clears after a power cycle and does not return, the dryer is safe to use normally. If AC persists, the dryer cannot be operated safely because the control boards cannot coordinate heating and motor functions.
Can I reset the code?
Yes. Unplug for 10 minutes and reconnect. AC caused by a temporary power event will clear and not return if the power supply is stable.
When to stop immediately?
Stop if you notice: The display shows signs of physical damage (burnt marks, melted areas), AC returns immediately after every power cycle.
Symptoms You May Notice
Control panel is completely unresponsive
No buttons work, the display is blank or frozen, and the dryer does not respond to any user input.
AC code on display
The display shows AC before going dark or becoming unresponsive.
Display shows garbled or random characters
Before settling on AC, the display may flicker, show random segments, or display incomplete information.
Dryer worked before a power outage
AC appeared immediately after power was restored following an outage, storm, or breaker trip.
Possible Causes
Loose board-to-board cable
The flat ribbon cable or wire harness connecting the main board to the display board has worked loose from its connector due to dryer vibration.
Requires ProfessionalPower surge damage
A voltage spike has damaged the communication circuits on one or both boards, preventing data exchange.
Requires ProfessionalCorroded connector pins
Humidity in the laundry area causes corrosion on the connector pins between the cable and the boards, degrading the signal quality.
Requires ProfessionalSafe Checks You Can Do
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1
Extended power cycle
Unplug the dryer for a full 10 minutes to discharge both boards completely. Plug back in and check if the display initializes normally.
10 minutes is necessary — shorter resets may not fully clear the communication fault state.
-
2
Verify power supply stability
Check that the dryer outlet is providing stable power by testing other devices on the same circuit. Consider installing a surge protector rated for dryers (240V, 30A capacity).
If AC appeared during a storm, wait until weather clears before diagnosing further.
When to Call a Professional
Contact a qualified technician if:
- AC persists after multiple 10-minute power cycle attempts
- The display is completely dead with no backlight or LED activity
- AC appeared immediately after a confirmed lightning strike or power surge
Need Professional Help?
Find qualified technicians in your area for proper diagnostics and repair.
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