The power cord and adapter is not properly assembled, and/or connected to the mains. The charging plates on the robot and the charging base are not connected.
- Connect the adapter connector to the charging base.
- Connect the power cable to the mains.
- Make sure the charging plates on the robot and the charging base are connected.
- Check that the plug and cable are not damaged.
- Please also make sure to clean the charging pads both on robot and charger with a dry cloth.