Front Fan Diagnostics

[paulpugh 3]

Struggled for two days trying to understand why neither print head would feed (both brand new) then learned the front fan is critical to not allowing the whole print head to get too hot and cause clogs.

 

Material would feed on load but then start to bind at the rear feeders. I found excess PCA material at the top entrance of the BB print head.  Finally connected it to the fan which was somewhat dirty with lint. I have cleaned it now but it does not seem to spin when the print heads are in heating mode. Is there a diagnostic mode I can run to turn on the front fan so I can determine for sure this part has failed? 

 

Thanks!

 

-p

Edited January 12, 2022 by paulpugh

[paulpugh 3]

Found the answer to this question. You can manually heat up a print head to a designated temperature. For any temperature over 60C, the fan should turn on. Mine did not.