cold extrusion

[alaris2 1]

not sure if this is a fault in Cura or printrun or where exactly..

during printing a 6hour print, I got several errors from printrun saying 'cold extrusion prevented'.

this is odd because the print was just fine, and these errors occured about 3 or 4 hours in.

I was printing at 210C and the uniformity of the print suggests nothing untoward.

[Daid 306]

I've actually seem the same happen once. Not sure why it does that, but it's really a Marlin question, because it's the Marlin firmware that reports the cold extrusion prevention.