If your S1 Pro keeps moving backward, please refer to the following common causes and solutions to resolve the issue.

Common Causes:

1. If the robot's front bumper is triggered or the radar is obstructed by debris or foreign objects, it may cause the robot to move backward as a safety precaution.
2. The swivel wheel may have become entangled with foreign objects, preventing it from rotating freely. This can cause the robot to slip and move backward when attempting to move forward.
3. The robot's wheels may have accumulated excessive dirt or dust, causing it to reduce the friction between the wheels and the floor. This can lead to wheels not having enough traction and cause the robot to move backward.

Solutions:

1. Press the front bumper manually to ensure that it can rebound normally. If the bumper is stuck or does not rebound, it might cause the robot to malfunction and move backward.

Clean any accumulated dust on the radar window bracket and ensure that the bracket is not blocked by dirt or debris.

2. Check and clean the swivel wheel. Remove any entangled objects and ensure that the wheel can rotate freely.

3. Clean the robot's wheels. Remove any accumulated dust to restore proper traction between the wheels and the floor.

If you have any further questions regarding the S1 Pro, please don't hesitate to contact us for assistance.