Robot vacuum moves in tight circles or repeatedly turns in one direction and cannot navigate straight.

Safety first: Turn off the robot before cleaning wheels and sensors.

Steps to resolve:

• Inspect wheels: Check both wheels for debris, damage, or worn treads. Clean wheel wells and ensure free movement.
• Clean sensors: Wipe cliff sensors, wall sensor, and front IR window with a dry cloth.
• Free the bumper: Press the bumper across its width to ensure it moves evenly and is not stuck on one side.
• Test on open floor: Place the robot in a large, open area and start a cleaning cycle to see if behavior improves.

When to replace parts: If circling persists, replace the weaker wheel module or, if sensors are at fault, the relevant sensor board.