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Source-backed error-code guide

Reviewed

Samsung Dryer dn Error Code

Samsung says dn means a dryer firmware download is in progress and specifically warns not to unplug or shut off power while the message is displayed. The dryer should restart itself after installation.

Applies to Samsung dryer with supported firmware-update capability

What the appliance detected

Detected condition

A firmware download or installation is in progress; dn is an update-status message rather than a normal repair fault code.

What may contribute

Possible causes

  • A supported firmware update started through the dryer's connected software path.
  • The dryer is still downloading or installing the update and controls may be temporarily unavailable.
  • If dn remains for an abnormally long time, the update may be stuck and Samsung support may be needed.

Start conservatively

Safe preliminary checks

Work in order and stop whenever a step is not supported by the documentation for your model.

  1. Confirm the display and model

    • Photograph dn and record the full model number before taking any action.
    • If an update was recently started in SmartThings or offered for the dryer, leave that connection available while the update runs.

  2. Do not interrupt power

    • Samsung explicitly says not to unplug or shut off power while dn is displayed.
    • Do not press random controls or repeatedly restart the dryer during installation.

  3. Allow the dryer to restart itself

    • Wait for the firmware installation to finish and for the dryer to restart automatically.
    • The duration can vary with the update file and connection speed.

  4. Escalate an update that does not finish

    • Samsung directs owners to request support if dn is still displayed after 24 hours.
    • If the dryer becomes unresponsive after the update or repeatedly returns to dn, contact Samsung instead of experimenting with service menus or unofficial firmware.

Actions not recommended

  • Do not unplug the dryer or switch off its breaker while dn is displayed.
  • Do not enter undocumented service modes, install unofficial firmware, or open the control panel.
  • Do not treat dn alone as proof that the control board or another hardware component failed.

When to stop and request service

  • dn remains on the display for 24 hours, as Samsung directs.
  • The dryer does not return to normal operation after the update finishes or repeatedly becomes stuck in the update state.
  • There is smoke, burning odor, sparking, unusual heat, a gas odor, visible damage, or another independent safety hazard.

Documented source

Official information reviewed

Our summary is based on manufacturer support material and stays within the limits of that material.

Source reviewed by Appliance Help HQ: September 23, 2026.

Appliance Help HQ is an independent informational site and is not affiliated with or endorsed by Samsung.

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