Kenmore Washer - F99 Error Code

System reset or watchdog failure.

Meaning

System reset or watchdog failure.

The F99 error indicates that the washer’s control board failed to complete a system reset or watchdog timer cycle. Kenmore explains that this code appears when the control board becomes unresponsive, freezes, or fails internal self‑diagnostics.

Symptoms

  • Washer becomes unresponsive
  • Display freezes or flickers
  • Washer will not start
  • F99 appears immediately on power‑up

Causes

  • Failed main control board
  • Corrupted firmware
  • Power surge or voltage spike
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Step-by-Step Fixes

  • Unplug the washer for 5 minutes to reset the board.
  • Inspect control board for burn marks or corrosion.
  • Replace the main control board if failure persists.
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Safety Notes

  • Disconnect power before accessing the control board.
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Applicable Models

Show Models
  • Kenmore HE4t: 110.45081400
  • Kenmore HE5t: 110.47081600
  • Kenmore HE5 Elite: 110.47751800
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Related Pages

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Other Kenmore Washer Error Codes

Show All Error Codes

Model-Specific Notes

F99 is typically caused by firmware corruption following a power outage or brownout.

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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