Written by
Adrian Soto Appliance Repair Content SpecialistPublished September 5, 2026Updated October 20, 2026
Error codeAC / Et / AE / EEE / AE4 / AE3 / AE5 / E3 / 1 AC
ApplianceDryer
Quick answer
AC and its aliases mean the dryer's internal components cannot communicate; a 60-second power cycle is the first step.
Model compatibility: Samsung reuses codes across series and model years, so AC / Et / AE / EEE / AE4 / AE3 / AE5 / E3 / 1 AC may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What this code means
AC (also Et, AE, EEE, AE4, AE3, AE5, E3, 1 AC) is a communication error: internal components cannot communicate.
If your Samsung dryer shows AC, Et, AE, EEE, AE4, AE3, AE5, E3 or 1 AC, its internal components cannot communicate with each other. Samsung groups all of these as communication errors for its dryers.
The one step to try
Shut the dryer off for 60 seconds, then turn it back on. If the code remains, request service.
Similar codes
AC6 names the exact link: main board to inverter board.
A communication code that survives the restart is a job for dryer repair. Los Angeles callers reach us at (310) 896-4231; give the exact code shown and your model.
Important safety warning. Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
Seeing this code on your Samsung appliance?
Book a specialist visit for a clear estimate and approval before any repair.
