iRobot
Brush Motor Power Loss
Vacuum runs but the motorized floor nozzle brush does not spin; no error code.
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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
Broken electrical connection in wand, Faulty brush motor, Damaged nozzle PCB, Worn brush motor carbon brushes (if applicable)
How to Fix / Troubleshooting
Safety first: Turn OFF the vacuum and remove the battery before inspecting electrical connectors.
- Check mode settings: Ensure the brushroll is not disabled by a hard‑floor or quiet mode (if your model has this feature).
- Inspect connectors: Detach and reattach the wand and nozzle several times to clean and reseat the electrical contacts.
- Test with another nozzle: If available, connect a different motorized nozzle. If it works, the original nozzle is faulty.
- Check wand continuity: Use a multimeter to verify continuity through the wand’s power pins. Replace the wand if open circuits are found.
- Replace nozzle: If power is present at the nozzle connector but the brush still does not spin, replace the motorized floor nozzle assembly.
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Repair Difficulty
Medium
3/5
Required Part
Motorized Floor Nozzle
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