JennAir
Excessive Frost – Air Infiltration or Defrost Failure
Excessive frost buildup on the interior walls, shelves, or food packages.
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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
Door not sealing properly, Door opened frequently in humid environment, Failed defrost heater or thermostat, Defective door switch leaving fan off
How to Fix / Troubleshooting
Safety first: Unplug the freezer before defrosting or accessing the evaporator.
- Step 1 – Manual defrost: Remove food to a cooler. Leave the door open and allow frost to melt naturally with towels to catch water. Do not use sharp tools.
- Step 2 – Inspect gasket and hinges: Ensure the door closes squarely and the gasket contacts the cabinet all around. Adjust hinges or replace gasket if needed.
- Step 3 – Check defrost system: If frost quickly returns on the back wall, test the defrost heater and thermostat as described in defrost-related entries.
- Step 4 – Reduce door openings: In humid climates, limit door openings and ensure the door is not left ajar.
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Repair Difficulty
Medium
3/5
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