E3
Amana
Evaporator Sensor or Defrost Sensor Error
Display shows E3; ice production may stop or be inconsistent, and refrigerator temperatures may drift.
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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 evaporator thermistor, Open defrost thermostat, Wiring harness damage near evaporator, Control board sensor circuit fault
How to Fix / Troubleshooting
Safety first: Unplug the refrigerator before removing the freezer back panel or working near the evaporator coil.
- Remove freezer back panel: Take out shelves and screws, then gently pull off the panel to expose the evaporator and sensors.
- Identify sensors: Locate the evaporator thermistor (small plastic-encased sensor clipped to tubing) and the defrost thermostat (round disc clipped to coil).
- Test components:
- Thermistor: Measure resistance and compare to spec at known temperature.
- Defrost thermostat: Check for continuity when cold (covered in frost or placed in ice water).
- Inspect for ice blockage: Heavy ice buildup can insulate sensors. Manually defrost if necessary.
- Replace faulty parts: Install new thermistor or thermostat as needed, ensuring proper clip placement for accurate sensing.
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Repair Difficulty
Hard
4/5
Required Part
Evaporator Thermistor
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