CDA
Defrost System Failure
Excessive frost or ice buildup on the back wall of the freezer.
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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 thermostat or sensor, Faulty defrost control on PCB, Door gasket leak causing excess moisture
How to Fix / Troubleshooting
Safety: Unplug the refrigerator before defrosting or accessing internal components.
Steps:
- 1. Manual defrost: Power off and leave doors open until all ice has melted. Use towels to collect water. Do not chip ice with sharp tools.
- 2. Inspect door seals: Replace any damaged CDA door gaskets to reduce moisture ingress.
- 3. Access evaporator: Remove the rear freezer panel and inspect the evaporator, heater, and defrost thermostat.
- 4. Test heater and thermostat: Use a multimeter to check continuity. Replace the CDA defrost heater or defrost thermostat if open-circuit.
- 5. PCB check: If components are good but frost returns quickly, the main PCB may not be initiating defrost cycles correctly and should be replaced by a technician.
Note: Some light frost is normal; thick, solid ice sheets are not.
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Repair Difficulty
Hard
4/5
Required Part
Defrost Heater
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