How to Fix Maytag Refrigerator Error F9

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⚠️ Safety Warning: Appliance repair involves electricity, gas, and moving parts. Always disconnect power before working on any appliance.

Error Code: Refrigerator Difficulty: Moderate

Problem: Defrost system fault – defrost cycle not terminating properly indicating failed defrost thermostat or heater

⚖️ Repair Decision

✅ WORTH FIXING

Parts under $100

How to Fix Refrigerator Error

Initiate forced defrost via service mode: Press Door Alarm + Freezer Down 3 sec, then press Freezer Up until ‘dF’ displays.
Monitor evaporator coils – should begin defrosting within 2 minutes (water dripping into drain pan).
After 25 minutes, defrost should terminate automatically. If not terminating:
Unplug unit and access evaporator compartment.
Locate defrost thermostat clipped to evaporator tubing – test continuity: should OPEN above 45°F. If stays closed, replace thermostat WPW
Test defrost heater continuity: should read 20-50Ω. Open heater requires replacement.
If both components test good, main control board W10868991 has failed defrost timer circuit – replace board.

OEM Part #: WPW10316428

Estimated Market Price: $45-95

If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure.

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Estimated repair cost (parts, or parts + labor) Most DIY parts are $50–$250. If you have a quote, use the total.

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