these are the codes:

permanent white - booting and confguring
white blinking - trying to connect to myGHL (only if myGHL is avtivated)
blue permanent - normal operation
blue blinking - normal operation and connected with myGHL
yellow blinking - warning
red blinking - alarm
green blinking - action in progress (here, for the doser: is dosing)

up to 2 states can be indicated at the same time, which means above color resp. blinking codes can be shown alternating