E09
Zanussi
Low Voltage Power Supply Fault
Microwave shows E09 and will not start; interior light and fan may not 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
Failed low-voltage transformer or SMPS on control board, Blown internal fuse, Shorted component on control PCB
How to Fix / Troubleshooting
Safety first: Unplug the appliance. Internal fuses and power supplies are connected to mains voltage.
- Check mains fuse and outlet: Verify the household fuse or breaker has not tripped. Test the outlet with another appliance.
- Inspect internal fuse: Remove the outer cover and locate the line fuse (usually in a fuse holder near the power cord entry). If blown, investigate for shorts before replacing.
- Replace fuse with correct rating: Use only the exact type and rating specified by Zanussi. If it blows again immediately, there is a deeper fault.
- Examine power supply section: Look for burnt components or bulging capacitors on the control PCB. If present, the board should be replaced.
Because this involves live mains circuitry, most users should seek professional service for E09 faults.
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Repair Difficulty
Professional Required
5/5
Required Part
Internal Line Fuse
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