Flashes yellow when dark

I have a problem with my litter robot III. When it’s dark, it flashes yellow. When I turn on the light, it turns blue and is ready to work.
I cleared everything and unfortunately nothing helps. Is there a way to reboot or check something else? For now, I leave the litter box light on at night.

Hello @Grzesiek ,

Welcome back to RobotShop community.

We are sorry to hear that you are having trouble with your Litter-Robot.

Please provide us with the serial and order numbers for this robot.

Awaiting your reply.

Sincerely,