Documentation for Edge Gateway 5000 power button LED transitions?

I've seen the power button LED on the Edge Gateway 5000 in several states, it would be helpful to know what the various transitions mean. Typically, it is solid white. I've seen it blink red-white and then transition to white. I've seen systems that won't boot stay solid red. I think I've even seen green in the mix.

Since we are deploying these and sometimes things go wrong in the field, it would be nice to know what these various colors and patterns mean. The only documentation I can find is that when explicitly running system diagnostics from the dip switch, blinking amber means the diagnostics failed.