Electronics / Hotend Fan not running after dual upgrade

[crazyg0od33]

Hi All,

Just got through the dual extruder upgrade on my Rev.E machine, and now the board fan and extruder fan (NOT the bed fan) are running for about two seconds after power-on, and then they shut right off.

Not sure what to do?

Thanks

edit- I may be stupid again - does the filament fan run all the time or only when the extruders are on?

[thunderbt3]

Try letting the extruder warm up and see if the fans kick on. The fans should kick on when the extruder reaches 50 deg C.

[Jules]

Yes, that is what is coded into the firmware. They blink on for a second when the connection is made, then turn off until the nozzle heats up.

[Matt_Sharkey]

Im digging this one up from the grave:

Can someone walk me through enabling this feature? I am currently running M2Marlin-1-14-2016-OriginalZMotor

I have the original 24v M2 with a V4 hot end