Whirlpool Washer - F09 Error Code

Overflow condition detected.

Meaning

Overflow condition detected.

The F09 error indicates that the washer has detected an overflow condition. Whirlpool Duet washers use a pressure switch to monitor water level. If the water level rises too high or the pressure switch detects rapid increases inconsistent with normal filling, the washer triggers F09 and activates the drain pump. This error is often caused by a stuck inlet valve, faulty pressure switch, or siphoning conditions.

Symptoms

  • Washer fills continuously
  • Water level rises too high
  • Drain pump runs constantly
  • F09 appears during fill

Causes

  • Stuck or leaking inlet valve
  • Faulty pressure switch
  • Blocked pressure hose
  • Drain hose inserted too far (siphoning)
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Step-by-Step Fixes

  • Turn off water supply immediately.
  • Inspect inlet valves for mechanical sticking.
  • Check the pressure hose for blockages.
  • Ensure the drain hose is installed correctly.
  • Replace the pressure switch if readings are inconsistent.
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Safety Notes

  • Unplug the washer before servicing valves or sensors.
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Applicable Models

Show Models
  • GHW9100LW
  • GHW9150PW
  • GHW9400PW
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Related Pages

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Other Whirlpool Washer Error Codes

Show All Error Codes

Model-Specific Notes

On Duet models, F09 frequently appears when the pressure hose becomes partially blocked by detergent residue.

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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