Whirlpool Washer - F36 Error Code

Heater relay failure.

Meaning

Heater relay failure.

The F36 error indicates that the washer’s heater relay on the central control unit (CCU) is not functioning correctly. The heater relay controls power to the heating element during hot and sanitize cycles. If the relay is stuck open, stuck closed, or fails to energize, the washer triggers F36. This error is often caused by relay wear, board damage, or overheating.

Symptoms

  • Washer does not heat water
  • Cycle takes longer than normal
  • F36 appears during wash
  • Burn marks or heat damage on CCU

Causes

  • Failed heater relay
  • Loose or damaged wiring harness
  • Failed heating element causing relay stress
  • Control board damage
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Step-by-Step Fixes

  • Inspect the CCU for signs of heat damage.
  • Test the heating element for proper resistance.
  • Replace the CCU if the relay is faulty.
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Safety Notes

  • Disconnect power before accessing the CCU or heater.
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Applicable Models

Show Models
  • 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, the heater relay is a known weak point and often fails due to prolonged high‑temperature 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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