Danby
Partial Defrost or Sensor Calibration Issue
Ice buildup on the evaporator coil but not defrosting fully; refrigerator cools poorly after a few days.
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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
Evaporator thermistor out of calibration, defrost thermostat opening too early, control board mis-timing defrost cycles
How to Fix / Troubleshooting
Safety: Unplug the refrigerator before accessing the evaporator and electrical components.
Steps to correct partial defrost:
- Manual defrost: Remove freezer contents and rear panel, then fully defrost the evaporator coil.
- Test evaporator thermistor: Measure resistance at known temperatures and compare to specifications. Replace if readings are off.
- Check defrost thermostat: Verify that it closes at freezing temperatures and opens at the correct warm temperature. Replace if it opens too soon.
- Control board: If sensors and thermostat are good but defrost remains inadequate, the main control board may not be initiating long enough defrost cycles and may need replacement.
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Repair Difficulty
Hard
4/5
Required Part
Evaporator Thermistor
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