Why does my Litter-Robot keep stopping upside down?
Ensure the Base is properly situated on a hard level surface, that it is not pushed against a wall, and has nothing resting on it. Empty the Waste Drawer regardless of how much waste is collected. Put the Globe back on the unit and ensure that it is on the track.
The Reset Button | Litter-Robot 3 - YouTube
To reset the Cat Sensor, press Reset when the unit is at the Home position and the control panel displays a solid blue light. Press the Reset button firmly and quickly, then watch for the blue light to flash to confirm you have successfully reset the Cat Sensor.
Litter-Robot 3: Rotate Globe to Home Position - YouTube
How To Repair The Cat Sensor In The Litter-Robot 3 Open Air - YouTube
Flashing slowly (about once per second) means the Litter-Robot clean cycle was interrupted. Your cat may have tried to enter the unit as it was cycling, and was detected by the built-in cat sensor; this caused the unit to pause its cycling. It will resume cycling 15 seconds after the cat leaves the globe.
Sometimes after adding litter or replacing litter in the globe, the total weight of the globe becomes high enough that during the rotation or even while stationary (without cat inside) the cat sensor is triggered. If the Cat Sensor is triggered continuously for more than 2 minutes then the red light starts to blink.
Press the Empty button to rotate the globe clockwise to the discharge position. After the litter has dumped into the Waste Drawer, you can press any button on the Control Panel to return the Globe to the home position.
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If not, please try the following whenever you get this error:
- Remove drawer.
- Place hand just left of center and all the way up until it is hitting the globe.
- Press and hold reset button until it flashes 3x, then release.
If you already have replaced the circuit board, then your problem is probably caused by the harness / magnetic sensor. Usually, when the globe is turning in the wrong direction, it's a problem caused by the circuit board or the magnetic sensor.
Where do the magnets go in Litter-Robot?
Hi, these magnets come from the Globe and must be placed in a specific position to trigger the Hall Effect Sensor in the base of the robot. This will allow the robot to track position of the globe.
Litter-Robot is backed by our WhiskerCare™ 1-Year Warranty and you have the option to extend this for 3 years of coverage. During the warranty period, Whisker will repair your Litter-Robot at no charge, including free shipping both ways.

The sensors are located left and side, under the top side of the base, and are visible if you look into the chute itself. BASE with globe removed, from above looking down onto the base top, and from each side. DFI with Robot assembled and turned on.