Robot vacuum shows F12 and may stop with the wheels spinning or stuck against an obstacle.

Safety first: Turn the robot OFF before freeing it from obstacles.

Steps:

• 1. Free the robot: Lift the robot away from any obstacle, thick rug edge, or threshold where it became stuck.
• 2. Inspect wheels and underside: Check for debris around the wheels and brush that could increase load. Remove any obstructions.
• 3. Change environment: If the error occurs repeatedly in the same area, block off that area or use boundary markers to prevent the robot from climbing problematic thresholds or very thick carpets.
• 4. Reset and test: Power the robot back on and run it in an open, flat area to confirm normal operation.

When to call a technician: If F12 appears even on flat, unobstructed floors, the drive current sensing circuit or motor drivers on the main PCB may be faulty. Professional diagnosis and PCB replacement may be required.