How to Fix Kenmore Refrigerator Error F3

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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 failure – heater or thermostat fault causing excessive frost buildup

⚖️ Repair Decision

✅ WORTH FIXING

Parts under $100

How to Fix Refrigerator Error

UNPLUG refrigerator and initiate manual defrost (leave doors open 8-12 hours until all ice melts).
Remove evaporator cover panel in freezer.
Test defrost heater for continuity (should read 20-50 ohms).
Test defrost thermostat when cold/frozen (should read closed/<1 ohm).
Replace faulty component(s).
Inspect wiring for burnt sections near heater connections.
After repair, monitor for 3 defrost cycles (typically every 8-10 hours) to verify heater activates and melts frost completely each cycle.
If frost returns within 48 hours, suspect adaptive defrost control board failure.

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OEM Part #: WPW10271465

Estimated Market Price: $40-90

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

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Appliance Age

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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Browse all Kenmore error codes: Kenmore Error Codes