If your VR300's battery is less than 25% charged, it cannot start a new cleaning program. You can tell whether your VR300 is less than 25% charged because only the top two rows of the [light display] will light up. Charge the VR300 at the charging station. You will then be able to restart it. Tip: If you connect your VR300 to the Kobold robot app, you can view the charge state of your VR300 in detail at any time.