Each amp has the following:

Blue Led - Power module is installed, online, and ready.

Amber Led - Power module is installed and powered on but is in a standby situation waiting for audio signal or external trigger.

Red Led - This indicates a fault condition. A fault condition is one or more of the following:
.excessive operating temprature
.excessive current (short circuit)
.DC on the outputs

When my amps shutdown I get a red led for that channel that shuts down.

M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85