If you ordered your Litter-Robot 3 before February 2018, your unit may have an internal shield. The internal shield is a possible cause for the “Three lights flashing” fault.

We strongly recommend removing the internal shield from your unit.

If your unit has an internal shield, you will need to remove it before installing the key and plug kit. The internal shield is not necessary for the unit to function and was removed from the design in March 2018. Reinstalling the internal shield is not recommended. 

You will need:

• Phillips-head screwdriver

Remove the internal shield

1. Press the Power button to turn the unit off and unplug the unit from the wall.
   
   
2. Press the bonnet tabs on either side of the unit to release the bonnet.
   
   
3. Rotate the bonnet backward and lift the bonnet up to remove it from the unit.
   

   Optional: Empty the waste drawer and clean the globe with water and a mild soap. If the globe has become extremely dirty, it can be soaked and cleaned with a water hose or power washer. It's important to deep clean your Litter-Robot every 3-6 months.
   
   If you use the Whisker app, press Reset Gauge in the Controls section of the app when you empty the waste drawer to reset the waste drawer level in the app.

4. Remove the screw from the center of the black key on the back of the globe.
   
   
5. Once the key is removed, you can easily pull the internal shield out from the entrance of the globe. The shield and key can be disposed of; just be sure to follow local regulations in your area.