H2D Print Head LED

My H2D has roughly 144 hours on it and has been working great. Today I started printing something in ASA and noticed that the little led on the print head turns on and off. It will be off for a while then turn on a bit then turn back off. Is this light supposed to stay on 100% of the time or is the toggling on and off just part of the monitoring system?

Apparently when printing with chamber heat, it turns off due to heat. I guess if you have a failed print right after it turns off, it will only trigger the alert when it turns back on again so you may have some (short) time with printing in the air…

Have a look here:

Thank you! I tried searching before posting but didn’t think to search for camera. This puts my mind at ease.