Main Led indicator: box cooling fan (programmed speed during process – Full speed at Idle state)
Box Led indicator: secondary cooling fan (user and hardware safety cooling fan programmed to keep internal temperature less than 52 degrees)
Safe led indicator: light on when heating plate temperature less 50 degrees, when it is off indicates danger to touch the heating plate as precautions. Also, in boot mode will be on.
Heating led indicator: indicates the heater operating algorithm, light on when start heating.