Litter Robot 3 fast flashing blue light

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

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.