Troubleshooting page for the Roomba can be found here.
Background And Information
In 2013 the Roomba 800 series was released. The 800 series of vacuums have updated features and technology; including the Aeroforce 3 stage cleaning system, which removes 99% of airborne particles down to 10 microns, tangle free roller extractors which actually remove debris by vacuum force instead of friction, Li-Ion batteries for longer run time, a quieter motor, and a 60% larger bin. The Roomba 891 was released in 2017 improving upon the 890 by adding Wireless internet for app control.
This model is identified by its black gold black color scheme and three button center. Model number is displayed on the underside of the robot in front of the right wheel, and the serial number can be found by removing the dustbin. This robot has a diameter of 13.9 inches weighs in at 8.39 lbs and is only 3.59 inches tall.
While this model is starting to age, its modular component design and ease of repair ability keep it competitive with the newly released and higher priced models.