Litter-Robot 3 is equipped with infrared emitters and sensors located above the Waste Drawer that check if the drawer is full each time the Globe returns to the Home position. 

Once a full Waste Drawer is detected, the unit will indicate it is full with a blue flashing light.

You will also receive a notification on your phone if you use the Whisker App.

The unit will cycle two additional times before it will no longer automatically cycle.

If your unit has a flashing blue light, this indicates that the Waste Drawer needs to be emptied.

Emptying the Waste Drawer when indicated is important to ensure that your Litter-Robot continues to cycle automatically.

Troubleshooting

A flashing Blue Light is normal, indicating the Waste Drawer is full. If your unit displays a flashing blue light or you received a “drawer full” notification in the Whisker App, please follow these steps:

1. Open the Waste Drawer and empty it.
    
2. Replace the liner. Reference this video.
3. Reinstall the Waste Drawer 
4. From the Home position, press the Reset button to zero the weight sensors.
5. Press the Cycle button.
6. Once the Clean cycle is complete, the unit should go back to blue ready status.

If your unit returned home and displays a solid blue light, you've been successful.

If your unit is not displaying a solid blue light after returning to Home position, or cannot complete the cycle, please continue with troubleshooting.

Inspect the Waste Drawer

1. Open the Waste Drawer.
2. Check for obstructions blocking the Drawer Full Indicator (DFI) sensors.
3. The DFI sensors can be located inside the Base and above where the Waste Drawer would sit.
    
4. There are two sensors on the left and right side of the opening to the Globe.
5. Ensure the Waste Drawer Liner is properly installed in the drawer, tucked into all four tabs.
6. If the bag is sticking up over the edge of the drawer, it will interfere with the DFI sensors that are located just above the drawer.
7. Close the Waste Drawer.
8. Unplug your Litter-Robot for 10 seconds and then plug it back in. This performs a hard reset.
    
9. When your unit is powered back on, it will perform a Clean cycle.
10. Once the Clean cycle is complete, the unit should go back to blue ready status.

If your unit returned Home and displays a solid blue light, you've been successful.

If your unit is not displaying a solid blue light after returning to Home position, or cannot complete the cycle, please continue with troubleshooting.

Cleaning the DFI Sensors

Let’s take a closer look at the DFI sensors

Debris, such as dust or cat fur, can interfere with the DFI sensor. This can cause the unit to inaccurately trigger a drawer-full indication.

1. Remove the Waste Drawer.
2. Use a dry or slightly damp microfiber cloth to clean the DFI brackets; avoid Ammonia-based products typically found in window, glass, mirror, or multi-surface cleaners.
    
3. Check for signs of corrosion.
4. Reinstall the Waste Drawer.
5. Press the Cycle button.
6. Once the Clean cycle is complete, the unit should go back to blue ready status.

If your unit returned Home and displays a solid blue light, you've been successful.

If your unit is not displaying a solid blue light after returning to Home position, or cannot complete the cycle, your unit needs to be repaired.

Issue not resolved?

If you've completed this troubleshooting and your Litter-Robot is still not detecting your cat, you will need either a Pinch Contact & DFI Kit or a new Base.

What do I do?

My unit is covered by WhiskerCare™
If your Litter-Robot is covered by WhiskerCare™ warranty, you have access to replacement parts, at no cost, to get your Litter-Robot up-and-running quickly.

1. Simply log in to your account at litter-robot.com.
2. Click on ‘My Robots’ to access the parts available for your robot.
3. Select the part you need.
4.  We’ll ship you the part at no cost, along with detailed instructions.

CLICK HERE TO START THE PROCESS

The warranty on my unit has expired
If your unit is no longer under warranty, we can help you with the necessary parts and instructions to properly fix your unit at home.

Parts Needed (choose one):

• Litter-Robot 3 Pinch Contact & DFI Kit | Installation Instructions
• Litter-Robot 3 Base | Installation Instructions

Need technical support?

Our Troubleshooting Wizard will solve most issues and is the fastest way to get help.

Troubleshooting Wizard