Roborock robot vacuum reports “Error 5” / “Main brush is blocked” and stops with the main brush icon flashing in the app.

Safety first: Turn off the robot and flip it over. Remove the dustbin to avoid accidental spills.

Step-by-step:

• Remove main brush cover: Release the brush guard latch and lift off the cover.
• Take out the main brush: Pull the brush straight up. Remove hair, threads, and debris from the bristles and both end caps.
• Clean end caps and bearings: On Roborock brushes, the end caps can usually be pulled off. Remove hair wrapped around the shafts and inside the caps. Wipe with a dry cloth.
• Inspect brush housing: Check inside the brush channel for stuck objects (toys, stones, etc.). Remove anything obstructing rotation.
• Reinstall brush: Seat the square and round ends correctly into their sockets, reinstall the cover, and ensure it clicks into place.
• Reset and test: Power on the robot and run a spot clean to verify the brush spins normally.

If the error returns with a clean brush: The main brush motor or gearbox may be failing and may need replacement.