The F3E1 error code indicates an issue with the thermistor, the sensor that detects water temperature in your KitchenAid dishwasher. This can happen for two reasons:

  • Open circuit: The control board isn’t receiving any temperature readings from the thermistor.
  • Short circuit: The control board is receiving incorrect, high readings from the thermistor.
KitchenAid Dishwasher F3E1 Error Code
Understanding the KitchenAid Dishwasher F3E1 Error Code

Here’s a step-by-step guide to troubleshooting the KitchenAid dishwasher F3E1 error code:

  1. Check the thermistor connection.
    • Locate the thermistor connector on the dishwasher’s control board.
    • Make sure the connector is securely plugged in and free of dirt or debris.
    • Gently clean the connector with a dry cloth if needed.
  2. Inspect the thermistor wiring.
    • Carefully examine the wires connecting the thermistor to the control board for any visible damage.
    • Look for signs of fraying, loose connections, or cuts in the insulation.
    • If you find any damage, replace the wiring harness with a new one.
  3. Test the thermistor resistance.
    • This step requires a multimeter.
    • With the dishwasher powered off and unplugged, use the multimeter to measure the thermistor’s resistance at room temperature (around 25 °C or 77 °F).
    • Compare the reading to the specified range in the table below.
    • If the value falls outside the range, the thermistor might need replacement.
Electric Part NameTemperatureOhmic Value
NTC thermistor25°C (77°F)47.1 kΩ
  1. Consider replacing the thermistor:
    • If the connection and wiring seem okay, and you’re not comfortable testing resistance, you can replace the thermistor itself.
    • Replacement thermistors are typically available from appliance parts retailers.
  2. Main circuit board replacement (last resort).
    • If the error code persists after trying the above steps, the issue might lie with the main control board.
    • Replacing the control board is a more complex repair and might be best left to a qualified appliance technician.

By following these steps, you can potentially resolve the F3E1 error code and get your KitchenAid dishwasher back to functioning properly.

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