E5
Danby
Inverter or Power Supply Fault (Inverter Models)
Microwave shows E5 and stops heating; fan and light may still operate.
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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
Defective inverter board, Loose high-voltage connections, Failed magnetron drawing excessive current, Control board power drive failure
How to Fix / Troubleshooting
Critical safety warning: The inverter and high-voltage circuits can store and generate lethal voltages. Do not attempt to probe or repair the inverter or magnetron unless you are a trained technician.
- Basic reset: Unplug the microwave for at least 10 minutes. Plug back in and test with a small cup of water on a low power setting.
- Ventilation and load: Ensure you are not running the microwave empty. Always place food or water inside when testing. Confirm vents are not blocked.
- Listen for abnormal sounds: Buzzing, crackling, or loud humming when E5 appears suggests a failing inverter or magnetron.
- Next step: If E5 reappears consistently, the inverter board or magnetron is likely defective. These parts are not user-serviceable; contact a qualified service center for diagnosis and replacement.
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Repair Difficulty
Professional Required
5/5
Required Part
Inverter Board
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