E20
Iceman
Defrost / De-Ice Heater or Cycle Fault (for models with active defrost)
E20 error, unit indicates defrost or de-ice fault, heavy frost buildup on evaporator
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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 element, Open defrost thermostat, Defective defrost relay on PCB, Frost sensor malfunction
How to Fix / Troubleshooting
Safety: Unplug the unit before accessing the evaporator and heater. Heater circuits are high voltage.
- 1. Manually defrost: Open the unit and allow ice/frost to melt naturally or use warm (not boiling) water. Do not use sharp tools to chip ice.
- 2. Inspect heater: Locate the defrost or de-ice heater around the evaporator. Check for visible breaks or burn marks. Test for continuity with a multimeter; replace if open.
- 3. Check defrost thermostat: The thermostat should be closed (continuity) when cold. If it remains open when frosty, replace it.
- 4. Verify control output: During a forced defrost (see service manual), check that the main PCB sends power to the heater. If not, the defrost relay or board is faulty and the PCB should be replaced.
- 5. Sensor check: If equipped with a frost sensor, test its resistance and replace if out of spec.
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Repair Difficulty
Hard
4/5
Required Part
Defrost Heater Assembly
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