Brandt
Defrost System Failure
Heavy ice buildup on evaporator coil; airflow reduced, temperature rising
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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, Open defrost thermostat, Faulty defrost timer or control board, Defective defrost sensor
How to Fix / Troubleshooting
Safety first: Unplug the freezer. Do not use sharp tools to remove ice.
Immediate action:
- Manual defrost: Remove food to a backup freezer or coolers. Leave the door open and allow all ice to melt, using towels to catch water.
Diagnosis:
- Access evaporator: Remove interior rear panel to expose the coil and defrost components.
- Test heater and thermostat: Use a multimeter to check continuity of the defrost heater and thermostat. Replace any open components.
- Electronic models: If heater and thermostat are good, the main control board may not be initiating defrost and should be replaced.
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Repair Difficulty
Hard
4/5
Required Part
Defrost Heater / Defrost Thermostat
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