Kenmore
Defrost System Failure or Air Infiltration
Excessive frost or ice buildup on the interior back wall or around the evaporator.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Failed defrost heater, Defective defrost sensor or thermostat, Door gasket not sealing
How to Fix / Troubleshooting
Safety: Unplug the unit before defrosting or accessing the evaporator. Do not use sharp tools to remove ice.
Steps:
- Manual defrost: Open the door and allow all ice to melt. Place towels to catch water. This may temporarily restore cooling.
- Inspect door gasket: Check for tears or gaps. Replace the door gasket if it does not seal properly.
- Test defrost components: Access the evaporator and test the defrost heater and defrost sensor/thermostat for continuity. Replace any open components.
- Control board: If all defrost parts are good but frost returns quickly, the main control board may not be initiating defrost cycles and may need replacement.
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Repair Difficulty
Hard
4/5
Required Part
Defrost Heater
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