F9
Severin
EEPROM / Memory Error
Oven shows F9, beeping, no heating, often after a power surge
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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
Corrupted firmware memory, Failed EEPROM chip on control PCB, Power surge during write operation, Manufacturing defect in memory device
How to Fix / Troubleshooting
Safety first: Disconnect mains power before handling the control panel.
- Power cycle: Leave the oven disconnected for 10–15 minutes, then reconnect. Sometimes transient memory errors clear after a full reset.
- Check supply stability: Ensure the mains supply is stable and within the specified voltage range. Avoid using long, undersized extension cords.
- Firmware reset (if available): Some Severin models may support a factory reset via a key combination. Refer to the service documentation.
- Replace control PCB: Persistent F9 usually indicates a defective memory device. Replace the entire Severin control module, which comes with pre-programmed firmware.
- Test all functions: After replacement, set the clock and test all modes to ensure normal operation and that F9 does not recur.
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Repair Difficulty
Professional Required
5/5
Required Part
Main Control PCB
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