Robot vacuum falls off low ledges or climbs onto areas it should avoid, such as black rugs being treated as safe.

Safety first: Turn off the robot and inspect for physical damage from any falls.

• Clean cliff sensors: Wipe all underside cliff sensor windows with a dry microfiber cloth.
• Test over edge: Holding the robot securely, lower the front over a table edge while powered on. The wheels should stop and reverse. If not, the sensors may be faulty.
• Adjust environment: Avoid running the robot in direct sunlight near stairs; close blinds if necessary.
• Service sensors: If the robot continues to ignore edges, replace the cliff sensor module or have the mainboard inspected.

Warning: Until the issue is resolved, block stairways with physical barriers to prevent falls.