Constant cyan LED

What does this light indicate? I had troubles for hours on this new installation.
For the first hour everything was fine, then I saw it was offline. I noticed it was trying to reset unsuccessful, and wouldn’t respond to trying to add a new door. This might have happened because I included an underscore in the device name. I walked away from it for 14 hours.
It was showing a steady cyan, when I tried again, and it reset with a new name like a champ. It has been online for 2 hours.
So my curiosity causes me to ask what the cyan LED indicated.

Here’s the reference for device modes.
Underscores in device name are accepted, in fact that’s how spaces are saved on the server.
Please don’t hesitate to post again if you experience any more issues.