Essentials freezer shows E3 and the compressor may not start or may short-cycle.

Safety first: Unplug the freezer before accessing the evaporator or defrost components. Avoid using sharp tools to remove ice.

Steps to check E3:

• 1. Inspect for heavy frost: Remove the interior rear panel to view the evaporator. If it is completely encased in ice, the defrost system is likely not working.
• 2. Locate defrost thermostat/sensor: On many Essentials freezers, a round defrost thermostat is clipped to the evaporator tubing, and/or an NTC defrost sensor is taped or clipped to the coil.
• 3. Test the defrost thermostat: With the evaporator still cold (below freezing) and the unit unplugged, disconnect the thermostat and check continuity with a multimeter. It should show continuity when cold. If it is open when cold, it is defective.
• 4. Test the defrost NTC (if present): Measure resistance and compare to expected NTC values. An open or shorted reading indicates failure.
• 5. Inspect wiring: Check the harness from the defrost components to the main control PCB for damage or loose connectors.
• 6. Replace faulty parts: If the thermostat or sensor fails tests, replace with a compatible defrost thermostat or defrost NTC sensor. Clip or tape them back in the original positions on the evaporator tubing.
• 7. Manual defrost: Fully defrost the evaporator with the unit unplugged and doors open until all ice is gone. Do not use knives or heat guns; a fan blowing room air is safer.

When to seek help: If the defrost components test good but E3 remains, the main control PCB or defrost relay may be faulty and should be diagnosed by a professional.