Kenmore Washer - F43 Error Code

Motor control overheating detected.

Meaning

Motor control overheating detected.

The F43 error indicates that the washer’s motor control unit (MCU) has overheated. Kenmore explains that this code appears when the MCU temperature rises beyond safe operating limits. This may occur due to heavy loads, restricted airflow, excessive current draw from the motor, or internal MCU component failure. When F43 is active, the washer halts agitation and spin to prevent permanent damage to the control system.

Symptoms

  • Washer stops mid‑cycle with F43 displayed
  • Washer will not agitate or spin
  • Burning smell or heat from the lower rear panel
  • Intermittent or weak drum movement
  • Washer becomes unresponsive until cooled

Causes

  • Overloaded washer causing motor strain
  • Blocked airflow around the motor control unit
  • Failing motor control board (MCU)
  • Shorted or binding drive motor
  • Loose or damaged wiring to the MCU
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Step-by-Step Fixes

  • Allow the washer to cool for 20–30 minutes before restarting.
  • Ensure the rear panel vents are not blocked by walls or laundry.
  • Inspect the MCU area for lint buildup restricting airflow.
  • Check the motor for signs of overheating or mechanical binding.
  • Replace the motor control board if overheating recurs.
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Safety Notes

  • Disconnect power before accessing the MCU or motor.
  • Avoid running the washer if a burning smell is present.
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Applicable Models

Show Models
  • Kenmore HE3t: 110.44932200, 110.44934200
  • Kenmore HE4t: 110.45081400, 110.45087400
  • Kenmore HE5t: 110.47081600, 110.47087600
  • Kenmore HE5 Elite: 110.47751800, 110.47761800
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Related Pages

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Other Kenmore Washer Error Codes

Show All Error Codes

Model-Specific Notes

F43 is especially common on HE3/HE4/HE5 models where lint accumulation around the MCU heat sink restricts cooling airflow, causing the board to overheat during high‑speed spin cycles.

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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