how did you realize that? send it in or take it apart yourself?
or could you see or hear it rattle or something?
Also why would it crack? i didn't drop or bang it.
Edit: I took it outside and looked through the tube pointed into the sun for light. I don't see anything funny or a crack. course it could be real difficult to see. I did leave it off over night and still does it now.
I noticed just by looking down inside the unit. I could see what looked like two straight lines on each side of the unit, a circle looking crack, and a minor chip. Honestly, if it wasn't for the chip I wouldn't have been sure it was the glass being broken. I confirmed my theory because I lightly ran a some paper along the glass to see if it would catch and rip and surely it did.
If the glass isn't broken, I'm not sure that the problem is man :/ Sorry you're experiencing this. Have you sent yours in before or would this be the first if you were to send it in?
When I first got my EVO, the air flow was tighter and I found I could combust at anything past 2. 12 was my spot on the vape for smaller pieces, 2 was my spot for super thick vape and filling large glass pieces. I would also occasionally combust.
After I sent it in, the airflow was substantially better and the temp control is much more precise and responsive I find, I can adjust it more based on how the weed is vaping rather than "oh shit last time I was at this temp I combusted." I've ran my unit up to almost 4 with no combustion. I go about 1 to 2 oclock now for my smaller pieces and 3-3:30 generally for my bigger ones. And again, haven't had a single combustion incident. The fix was a combination of improved airflow and updated firmware.
If you haven't sent it in yet and you're continuing to experience this, might be worth opening up a ticket for. Could be a firmware problem.