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Source-backed error-code guide

Reviewed

Samsung Dishwasher 3E Error Code

For 3E, Samsung says to verify that the hot-water supply is not set above 176°F. Keep the check at the household water-heater or documented supply setting and request service if the error remains.

Applies to Samsung dishwasher with digital display

What the appliance detected

Detected condition

The dishwasher detected incoming water that is too hot.

What may contribute

Possible causes

  • The household hot-water supply may be set above Samsung’s documented 176°F limit for this error.
  • A temperature-detection or related internal condition may require service when supply temperature is within specification and the code persists.

Start conservatively

Safe preliminary checks

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

  1. Record 3E and confirm the model

    • Photograph the display and confirm the exact Samsung dishwasher model.
    • Check the model manual before changing any household hot-water setting.

  2. Verify the household hot-water setting

    • Samsung says to verify that the hot-water supply is not set above 176°F.
    • Use the normal water-heater controls or a qualified plumber rather than opening dishwasher panels or plumbing connections.

  3. Stop if 3E remains

    • If the water supply is not set above 176°F and 3E still appears, request Samsung service.
    • Do not keep raising, lowering, or cycling temperatures in an attempt to clear an internal fault.

Actions not recommended

  • Do not touch hot pipes or water that could cause burns.
  • Do not access the dishwasher heater, sensor, wiring, or control board.
  • Do not use 3E as proof that a heater or temperature sensor has failed.

When to stop and request service

  • 3E persists with the hot-water supply at or below Samsung’s documented limit.
  • The household water heater or plumbing cannot be checked safely.
  • There is abnormal heat, steam, burning odor, leakage, or any electrical warning sign.

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 24, 2026.

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

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