Robot vacuum shows F6 and stops; may occur when approaching obstacles or walls.

Safety first: Turn the robot OFF before manipulating the bumper.

Steps:

• 1. Check bumper movement: Gently press the front bumper in and release it across its full width. It should move freely and spring back without sticking. If it feels stuck, inspect for debris.
• 2. Clean bumper gap: Use a soft brush or compressed air to remove dust, hair, or crumbs from the gap between the bumper and the body. Pay attention to the corners where debris often accumulates.
• 3. Inspect for damage: Look for cracks or deformation of the bumper that could prevent proper movement. If the bumper is visibly damaged, it will likely need replacement.
• 4. Reset and test: After cleaning, power the robot on and start a short cleaning cycle in an open area. Lightly tap the bumper to confirm it responds without triggering F6.

When to call a technician: If F6 persists and the bumper moves freely, the internal bumper switch or wiring harness may be defective. Professional disassembly and replacement of the bumper sensor assembly is recommended.