Ikea
Frost Accumulation / Defrost System Failure
Excessive frost build-up on the back wall or around the evaporator, reducing storage space.
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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
Defective defrost heater, Failed defrost sensor or thermostat, Blocked defrost drain causing ice, Door gasket leaking warm air
How to Fix / Troubleshooting
Safety: Unplug before defrosting or accessing the evaporator.
Steps:
- 1. Manual defrost: Remove food to a cooler, unplug the freezer, and leave the door open until all ice melts. Do not use sharp tools to chip ice.
- 2. Clear drain: Ensure the defrost drain is not blocked as described in the leak scenario.
- 3. Test defrost components: After defrosting, test the defrost heater, sensor, and thermostat for continuity and correct resistance.
- 4. Replace faulty parts: Install new defrost heater, sensor, or thermostat as needed.
- 5. Check door seal: Replace a damaged gasket to prevent warm, moist air from entering.
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Repair Difficulty
Medium
3/5
Required Part
Defrost Heater Assembly
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