Good morning. Please try upgrading the robot’s firmware and then restarting it. If the fault still persists, based on your description, this is a brand-new robot that keeps reporting a main brush entanglement error even though there is no debris wrapped around the brush. Kindly contact our after-sales team for further troubleshooting solutions. We sincerely apologize for the inconvenience caused to you. Email:
support@mova-tech.com