E8
Avanti Inverter or Power Supply Error (Inverter Models)

Microwave shows E8 and will not start; interior light and fan may operate briefly then shut off.

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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 inverter board, Shorted magnetron drawing excessive current, Loose high-voltage connections, Faulty line filter or surge damage

How to Fix / Troubleshooting

Critical safety warning: Inverter-based microwaves operate at high voltage and high frequency. Repairs to the inverter and magnetron should only be performed by trained technicians.

Basic checks for users:

  • 1. Power reset: Unplug the microwave for 5–10 minutes, then plug back in and test. If E8 returns immediately, discontinue use.
  • 2. Inspect power cord and outlet: Ensure the outlet is properly grounded and not loose. Avoid using extension cords.
  • 3. Professional service: If E8 persists, the inverter board or magnetron is likely faulty. Do not attempt to access or repair the inverter yourself. Contact an authorized Avanti service center.
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Repair Difficulty

Professional Required 5/5

Required Part

Inverter Board
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