Litter Robot 3 fast flashing blue light

Help & Support Domestic Robots
1

Hello,
I have one of the first Litter Robots 3 (order: 626102 - Litter-Robot 3 Automatic Self-Cleaning Litter Box EU )
The problem is that the robot start fast blinking blue light after turning on.
I disassemble it, cleaned thoroughly including the DFI sensor, checked pins - they looked in good condition, but still the flashing blue light was on.
Ordered from new DFI sensor (the small one), installed it and still the same situation - flashing blue light.

What I found is that the connect circuit board was hot on specific place (the back side of empty button). Is it possible this to be the reason and I have to change it or there can be another reason for the still flashing blue light?
If I have to change it which one to order?

I think it is the first one because my LR3 is not the Open Air one and I do not need wi-fi board for an app.

Just for information I have disassemble and assemble the robot around more than 10 times for thorough cleaning and I have no problem to do it. I just want to know what exactly to change to make it work again.

Thank you in advance.

1 Like
2

Hi @kirilnedyalkov!

Yes, it is very likely that the main circuit board is defective.

Since you have Litter-Robot 3 Open Air, replacement circuit board would be this one:

But, it you want to upgrade to a Connect version with WiFi so you can connect with the app on your phone, then you should order this kit:

I hope this helps. Feel free to ask anything else.

1 Like
3

Hello Igor,
Thank you for the reply.
I just want to confirm about the version of Litter Robot 3.

My unit is made 2017 and is (as per my knowledge) from first version. I thought that second version is Open Air and third version is Connect. Am I right or no?

1 Like
4

Hi @kirilnedyalkov,

Litter-Robot 3 and Litter-Robot 3 Open Air are same robots. There should be no differences.

Litter-Robot 3 Connect is different because it can come in grey color and it also has WiFi connectivity.

You can send us a photo of the serial number to check. Also, you can send us a photo of the main circuit board so we can check.

Thank you.

5

Hi Igor,
Ok now is clearer for me about the robots.
I will check the serial number later and will attach picture of it and picture of the circuit board.
After is clear the about the board will order it.

Thank you a lot for the help.

1 Like
6

You are welcome!

7

Hello,
I hope these pictures are okay. I did not manage to find a serial number of the unit :frowning:

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viber_image_2024-12-20_13-50-13-540
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viber_image_2024-12-20_13-50-13-706
viber_image_2024-12-20_13-50-13-7061600×1200 214 KB

1 Like
8

Hello @kirilnedyalkov ,

Thank you for the photos.

You can go with this board:

The board you have is the older version, which had the fourth connector in the end where you could connect little board with WiFi chip. But this is obsolete from a long time ago.

So a new circuit board for Litter-Robot 3 Open Air should work (unless you want to upgrade to Connect).

1 Like
9

Thank you for the reply.
I will order the board and I hope this will fix the problem with the fast flashing blue light.

Have a happy holidays and great new year :slight_smile:

1 Like
10

You are welcome.

Happy holidays to you too :slight_smile:

And let us know if the problem is solved.

11

Hi @igor_X
Today I received the new board and replaced it. Now all is working normal.
Thank you for the help and wish you a great 2025 year :slight_smile:

For anyone who needs help with FAST FLASHING BLUE LIGHT. If you changed the DFI Sensor and still have this problem consider changing the board. Still suggest to first contact support before proceeding with the purchase.

1 Like
12

Hi @kirilnedyalkov ,

That is great news :slight_smile:

Thank you for informing us :slight_smile:

Happy new year :slight_smile: