E20
Amica Power-On Self-Test Failure

E20 error, freezer may not cool after a prolonged power outage or brownout.

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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

Corrupted startup sequence in control firmware, Low voltage at startup, Damaged reset circuit on main PCB, Faulty internal power supply on control board

How to Fix / Troubleshooting

Safety: Disconnect from mains before touching internal components.

Procedure:

  • 1. Verify mains voltage: If possible, have the outlet voltage checked by a qualified person. Avoid using long extension cords.
  • 2. Extended reset: Unplug the freezer for at least 30 minutes to allow full discharge of the control board. Reconnect and see if E20 clears.
  • 3. Inspect main PCB: Access the board and look for obvious damage in the power supply section (burnt resistors, swollen capacitors).
  • 4. Replace main PCB: If E20 persists and there is no visible external cause, replace the "Amica Main Control Board".

Tip: If your area has frequent brownouts, consider a voltage stabilizer rated for refrigerators/freezers.

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Repair Difficulty

Hard 4/5

Required Part

Main Control Board
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