How to Fix Kenmore Refrigerator Error F21

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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: Easy

Problem: Refrigerator door ajar sensor fault or door seal failure

⚖️ Repair Decision

✅ WORTH FIXING

Parts under $100

How to Fix Refrigerator Error

Verify fresh food door fully closed and latched.
Inspect door gasket for damage, warping, or debris. Clean thoroughly.
Test door switch operation in door frame jamb – should read closed when door shut.
Adjust door alignment if needed via hinge screws.
Replace door switch if faulty.
If gasket damaged, replace entire gasket assembly – requires careful stretching into door groove starting at top center and working down both sides.
Perform dollar bill test after repair: close bill in door seal at multiple points – should feel resistance when pulling out, indicating proper seal.

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OEM Part #: WPW10589650

Estimated Market Price: $45-80

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

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Appliance Type

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