Is there anything just above the NorthStar Navigation Cube, like a cabinet overhang?
Move the Cube to an open area. Is the NorthStar Navigation Cube close to a wall with the blue light facing the wall? Turn the Cube so the blue light faces into the room. Is there a moving ceiling fan above the NorthStar Navigation Cube? Turn off the fan (or move the Cube so it is not beneath the fan). Is the ceiling in the room high or uneven? Move the Cube to an area with a lower and even ceiling. Try placing the NorthStar Navigation Cube in a new spot or facing it in a different direction. • Mint is cleaning only a small area. Mint requires the NorthStar Navigation Cube to maximize its cleaning area. Make sure the Cube is in the area you want to clean. • Mint will not turn on. Plug the included charger into the cleaner and charge the battery overnight or until the power button light turns blue while the charger is plugged in. If the power does not turn on, make sure the rechargeable battery is securely connected: • Remove the battery door cover on the bottom of the cleaner with a scr
