F8
Xiaomi
Charging Voltage / Adapter Error
Display shows F8, vacuum reports overvoltage or incompatible charger when plugged in
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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
Using non-original charger with incorrect voltage, Faulty Xiaomi power adapter, Damaged charging PCB, Surge event affecting charger
How to Fix / Troubleshooting
Safety first: Unplug the charger from the wall before inspecting. Do not use damaged adapters.
- Verify charger model: Confirm that the charger is the original Xiaomi adapter supplied with the vacuum or an approved replacement with the same voltage and current rating.
- Inspect adapter and cable: Look for frayed cables, cracks, or burn marks. Replace the adapter if any damage is found.
- Try another outlet: Plug the charger into a different wall socket without extension cords or power strips.
- Test with another charger: If available, use a known-good original Xiaomi charger. If F8 disappears, discard the faulty adapter.
- If F8 persists with correct charger: The internal charging PCB or BMS may be damaged. Replacement of the charging board or battery pack is required.
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Repair Difficulty
Medium
3/5
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