What do the different conditions of the Status LED on a Viconics LON thermostat indicate?

Issue

Several Viconics LON thermostats are installed on a job.  Only one won't communicate properly.  What do the different conditions of the Status LED indicate?

Product Line

TAC I/A Series

Environment

Viconics all LON thermostats

Cause

One of many installed is not communicating properly

Resolution

Different possibilities with the Status LED behavior for the LON thermostat