E5
Bauknecht
Magnetron or High-Voltage Failure
Microwave shows E5 and stops heating; display and light may still function.
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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
Open magnetron filament, Shorted magnetron, Failed high-voltage transformer or inverter, Faulty high-voltage wiring
How to Fix / Troubleshooting
Critical safety warning: Do not attempt to service the magnetron or high-voltage system unless you are trained. Risk of severe electric shock.
- Step 1 – Stop using the unit: Unplug immediately if E5 appears with burning smell or loud buzzing.
- Step 2 – External checks only: Verify that the outlet and plug are in good condition. Do not open the cabinet.
- Step 3 – Professional repair: A technician will test the magnetron, transformer/inverter, HV diode, and capacitor, and replace the defective part(s) with Bauknecht originals.
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Repair Difficulty
Professional Required
5/5
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