Litter robot 3 - Blue LED quick flashing and control panel inoperative

Help & Support Robots & Kits
1

Hello,
I have the exact same problem than on the YouTube video below:

LED blue flashing quicker than when the drawer is full and no button of the control panel is working.

What should I do? Replace the draw sensors as mentioned in the coments?

Thanks for your help
Sebastien

Thank you so much in advance for your help!

2

Hey @sebbm72!

Yeah, usually the fake blue light flashing comes from a faulty DFI (drawer) sensor.
You can buy a replacement here: https://www.robotshop.com/en/litter-robot-iii-open-air-dfi-hardware.html

However, you can try the following troubleshooting, before buying the sensor:

To troubleshoot the blue blinking, let’s start by power cycling your unit:
1.) Leave your unit powered ON with the blue blinking light engaged & Unplug your power supply from the base
2.) Wait 10 seconds then plug the unit back in
3.) Allow the unit to complete a start‐up cycle. If the light is solid blue, the code has been successfully cleared. If the light is still blinking, let’s proceed with troubleshooting. Let’s empty the drawer if it has waste and reinstall the bag before proceeding.
Note: If you are using a dark colored bag, always tuck it into the tabs.
Video: https://www.youtube.com/watch?v=NxgTYtknW_c&index=2&list=PLVGSgrf6kgDNPYaulQB7wDvu9AJcmBQ5k

Let’s check your DFI Lenses for any obstructions:

  1. Turn off the unit and Unplug the power from the base
  2. Remove the Bonnet and the Globe
  3. Inspect the top of the Base where the Globe usually rests. Are there any debris? Small amounts of litter is normal. Clean as needed.
  4. Inside the waste opening there are two clear ““Lenses”” (left and right side). Ensure there are no debris on the Lenses. Sometimes litter can fall/splash onto them. ** To clean the lenses, we recommend wiping them off with a soft damp cloth and/or glass cleaner. Do not directly spray the Base or DFI Lenses. **
  5. Replace the Globe and Bonnet. Reset the black key in the back of the unit into the pocket. 6. Plug the unit back in. If you turned the power off, you will need to power it on and press ““cycle””. Once the cleaning cycle is complete, the unit should be at the Home position with a Solid Blue LED on.

Further Troubleshooting:

  1. If the unit continues blinking blue, remove the waste drawer and press cycle.
  2. Press reset 2x to abort the cycle and return the unit to home (it will level the litter).
  3. If the unit goes to solid blue with the waste drawer removed, ensure there is nothing in the drawer blocking the lenses.
  4. If the drawer is clear, your base needs to be repaired
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3

Thanks a lot for your reply.

The problem has been temporary cured after unpowering the unit for several minutes. Unfortunatly, the symptoms persist and sometimes evolved into this:

1.A rotation cycle starts and dumps waste
2.Then just before reversing direction the robot stops, the yellow light starts flashing and the globe moves a small amount further in the original rotation direction and stops
3.I switch off the unit. I repositionned the globe. Switch back ON.
4. Blue led blinking 2x per second
Then, if I press reset, it depend:

  • Sometime, after pressing reset, the cycle start again in the original rotation direction and stop with yellow light starts flashing fast
  • Sometime, it stays Blue led blinking 2x per second with no effect of the control panel button

I’ve tried cleaning the whole litter robot and the anti-pinch contacts. I made a video of the anti-pinch contacts during the rotation+small amount further in the original rotation direction before versing direction ==> there is no movement at contact level.

Do I have to change the mother board?

regards
Sébastien

4

Hey @sebbm72

There is a good chance that the problem comes from the DFI sensor, sometimes it can also make the yellow light blink

1 Like
5

I’ve juste changed the DFI. Everything go back to normal!
Thanks for your help!

1 Like
6

HI there,

I am glad the issue was solved!
Thanks to @Magmator!

1 Like