I happen to be printing a build plate holder and occasionally it stops and I get “Nozzle seems to be covered with jammed or clogged material” I check and maybe a little string is there, most of time not. I hit Resume and it continues. Sometimes prints 3-4 more layers and I get the same response again, then sometimes it prints 20 layers before I get the ‘error’ I hit “Resume” and it continues.
Anyone have this issue with their H2D?
Same here. I have had my h2d since the beginning of may and have now printed for almost 6 days with the standard 0.4mm nozzles without any issues. Yesterday i changed to 0.2mm on both nozzles and wanted to start a print overnight. Here now is exactly the same problem. I was naive and unfortunately did not carry out a calibration, which i perhaps should have done. As for the problem itself, i can say i suspect a false/positive detection from the AI. Externally i cannot detect any clumping or errors at all. Print quality of my started print is perfectly fine as Layer 38 of 800.
But maybe this get fixed in the new Firmware if you look at the release notes of v01.01.02.07 version.
I just got my H2D late yestrday…
Set it up for a large overnight build.
After an hour I switched off the printer lamp and went to bed…
This morning I expected a finished print but was mortified to see a redflashin light and a stopped print with the title message.
I continued and all is OK.
Looking at the wikki now it says '[quote=“daleshell, post:1, topic:171412, full:true”]
I happen to be printing a build plate holder and occasionally it stops and I get “Nozzle seems to be covered with jammed or clogged material” I check and maybe a little string is there, most of time not. I hit Resume and it continues. Sometimes prints 3-4 more layers and I get the same response again, then sometimes it prints 20 layers before I get the ‘error’ I hit “Resume” and it continues.
Anyone have this issue with their H2D?
[/quote]
: Can I turn off the chamber LED while printing?
You can turn off the chamber LED while printing, but please note that doing so may lead to false detections by the AI function. In particular, turning off the chamber LED after the printing has started may affect exposure, as the external lighting environment has changed significantly. We will continue to optimize our AI detection capabilities.’
So there we have it
Its afraid of the dark 
I will look to do a print today, but just an FYI, I re-seated the hotend sock. I had just checked the screws behind the hotend to make sure they were tight and re-installed the socks. Thinking maybe I didn’t have it on just right. We will see if the problem resurfaces.