F8
Zanussi
Low Voltage / Power Supply Fault to Control Board
Electric oven shows F8 and the display may be blank or flickering.
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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
Loose mains connections, faulty internal power supply on control board, failing transformer or SMPS, neutral connection issue
How to Fix / Troubleshooting
Safety first: Turn off power at the isolator and verify no voltage is present before opening any covers.
- Check terminal block: Inspect the mains terminal block at the rear of the cooker for loose screws, discoloration, or heat damage. Tighten or replace as necessary.
- Inspect wiring: Follow the live and neutral wires from the terminal block to the control board, checking for damage or loose connectors.
- Control board inspection: Remove the control board and look for bulging capacitors, burnt components, or cracked solder joints around the power supply section. If present, replace the control board.
Warning: Do not attempt component-level repair of the power supply unless you are qualified; incorrect repair can be hazardous.
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Repair Difficulty
Hard
4/5
Required Part
Main Oven Control Board (EOC)
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