Roborock robot vacuum announces “Error 6” / “Side brush is blocked” and stops cleaning.

Safety first: Power off the robot and turn it upside down.

Step-by-step:

• Remove side brush: Use a small Phillips screwdriver to remove the screw holding the side brush. Lift the brush off the shaft.
• Clean shaft and brush: Remove hair and fibers from the shaft and underside of the brush. Wipe with a dry cloth.
• Inspect gearbox area: Check around the side brush motor hub for debris. Use tweezers or a brush to clear any obstruction.
• Reinstall or replace brush: If the side brush is bent or heavily worn, replace it with a genuine Roborock side brush. Reattach with the screw, ensuring it is snug but not overtightened.
• Test operation: Power on the robot and start a spot clean. Observe whether the side brush spins freely.

If the error persists: The side brush motor or gearbox may be damaged and require replacement.