Samsung Dryer Error Code AE5 — Communication Error (Sub Board)
What this means
The AE5 error code indicates a communication failure between the dryer's main control board and a secondary (sub) control board. This prevents the dryer from operating as the boards cannot coordinate cycle functions. It is often caused by loose wire harness connections, a power surge, or a defective board.
Alternate codes: 1 AC, AC7
Step-by-step fix
3 stepsPower cycle the dryer
Unplug the dryer or turn off the breaker for 60 seconds. Turn it back on and start a cycle.
Power surges during storms are a common cause of this error.
Inspect wire harness connections
Unplug the dryer, remove the top panel, and check all wire harness connectors between the main board and sub board. Unplug and reseat each connector firmly.
Look for any signs of heat damage, corrosion, or bent pins on the connectors.
Check for board damage
Visually inspect both boards for burnt components, swollen capacitors, or dark spots on the circuit board.
If visible damage is present, the damaged board needs replacement.
When to call a professional
If reseating connectors does not resolve the issue and no visible damage is found, a technician should diagnose which board is faulty using specialized equipment.
Information compiled from manufacturer service manuals, official troubleshooting documentation, and appliance repair industry resources. This guide is for informational purposes only — always consult a qualified technician for complex repairs.
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