C11
Samsung
Brush Head Communication Error
Vacuum shows C11 and the brush head LED lights may flash; brush does 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
Damaged electrical contacts between wand and brush head, Broken wiring in wand, Faulty brush head PCB, Corroded connectors
How to Fix / Troubleshooting
Safety first: Remove the battery before inspecting electrical contacts.
- Inspect contacts: Check the metal contacts at the end of the wand and on the brush head for dirt, corrosion, or bent pins. Clean gently with a dry cloth or isopropyl alcohol.
- Test without wand: If your model allows direct connection of the brush head to the main body, test this configuration. If it works, the wand wiring is likely faulty.
- Try another attachment: Attach a different powered tool (e.g., mini motorized brush). If that tool works, the original brush head is defective.
- Replace faulty component: Replace the wand if its wiring is open, or replace the motorized floor head if its PCB or motor is defective.
- If C11 persists with all tools: The main PCB output to the brush head may be faulty and requires professional service.
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Repair Difficulty
Medium
3/5
Required Part
Extension Wand
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