Maytag Washer - F3E3 (Front-Load) Error Code

Temperature sensor calibration error or heater relay fault.

Meaning

Temperature sensor calibration error or heater relay fault.

The Maytag F3E3 error code on front-load washers indicates that the appliance control unit (ACU) detected an abnormal temperature reading or a heater relay malfunction. Whirlpool-built Maytag front-load washers use an NTC thermistor and an internal heater relay to regulate wash water temperature. If the sensor calibration drifts, the heater relay sticks, or the ACU receives inconsistent temperature data, it triggers F3E3 to prevent overheating or incorrect wash temperatures.

Symptoms

  • Washer stops mid-cycle with F3E3
  • Water temperature does not match the selected setting
  • Heater does not activate or activates inconsistently
  • Washer takes longer than normal to complete cycles
  • Intermittent temperature-related faults

Causes

  • NTC thermistor calibration drift
  • Heater relay stuck open or closed
  • Loose or corroded NTC wiring harness
  • Moisture intrusion around the heater housing
  • ACU heater-relay driver failure
  • Incorrect temperature readings due to wiring resistance issues
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Step-by-Step Fixes

  • Unplug the washer for 5 minutes to reset the ACU.
  • Inspect the NTC sensor wiring harness for loose or damaged connectors.
  • Check the NTC sensor resistance (typically ~10k-- at room temperature).
  • Inspect the heater relay area on the ACU for burnt spots or corrosion.
  • Check the heater housing for moisture or detergent residue.
  • Replace the NTC sensor if readings are unstable.
  • If the heater relay is stuck or damaged, replace the ACU.
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Safety Notes

  • Disconnect power before accessing the heater housing or control boards.
  • Do not operate the washer if overheating or burning smells are present.
  • Avoid spraying cleaners directly into the dispenser or control panel area.
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Applicable Models

Show Models
  • MHW3000 Series: MHW3000BW, MHW3100DW
  • MHW3500 Series: MHW3500FW, MHW3505FW
  • MHW4200 Series: MHW4200BW
  • MHW4300 Series: MHW4300DW
  • MHW5100 Series: MHW5100DW
  • MHW5500 Series: MHW5500FW, MHW5500DW
  • MHW5630 Series: MHW5630HW, MHW5630HC
  • MHW6000 Series: MHW6000XW
  • MHW6630 Series: MHW6630HW, MHW6630HC
  • MHW7000 Series: MHW7000XW
  • MHW7100 Series: MHW7100DW
  • MHW8200 Series: MHW8200FW
  • MHW8630 Series: MHW8630HW, MHW8630HC
  • MHW9000 Series: MHW9000YW, MHW9000XL, MHW9000XR
  • MHWE Series: MHWE200XW, MHWE201YW, MHWE251YG, MHWE251YW, MHWE301YG, MHWE301YW
  • MHWZ Series: MHWZ400TQ, MHWZ600TW
  • Commercial Front-Load: MLG2000AWW, MLG3000AWW, MLG4500 Series
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Related Pages

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Other Maytag Washer Error Codes

Show All Error Codes

Model-Specific Notes

On modern MHW-series front-load washers, F3E3 is most commonly caused by heater relay failure on the ACU or calibration drift in the NTC sensor. On older MHWE and MHWZ models, moisture intrusion around the heater housing frequently leads to temperature calibration faults.

Disclaimer

The information provided on this page is for educational and informational purposes only. Repairs involve electrical, mechanical, and water-related risks. Always follow manufacturer instructions and consider contacting a qualified technician for diagnosis or repair.

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