My parts cooling fan will not some on at any point during the print, regardless of slicer settings. I did see in this forum that Michael K. has resolved this part cooling issue with new Marlin you wrote?
Is this the only solution for part fan not working? The fan does work in heat up PLA mode, so I know that the electrical portion is functional.
Can you give me simple clear instructions how to do your firmware update? I saw you mentioned the arduino portion also but I have no idea how to do the marlin/arduino update.
Also...I printed a calibration cube that I modeled myself and it printed great (even without part cooling), but at the very end of the print the z-axis drove nozzle into my pretty first print. I checked the gcode output from Slic3r and it had the end routine code present that should have lifted the z after print, not shoved it into part.
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Maybe you have insert or eject sd card or usb cable during print?
Or..if you print via usb,have load the sistem or connect/disconnect some hardware?
I know it should be off for first layers but it never comes on.
I know that it is not failed fan or connection because i can make it run by using pla preheat function on display...fan works. But it will not allow the slicer settings to run it at all.
I can only then assume it is a firmware issue, yes?
I still don't know how to fix my part cooling fan not working during printing.
1) when the temp sensor in PSU kicks on the PSU fan for a brief period
2) if i use the PLA preheat function on LCD knob...in this case, as soon as i start gcode program from SD card the fan turns off and does not come on again
As a second note, the preheat pla function causes bug in printing...if I use the preheat function, then i select gcode file from card, when desired temps are reached the z axis shoots about 100 mm up and x axis takes off and i have to cancel print every time. I have to use 'return to failsafe'(default settings) with knob and LCD to erase the preheat function. The preheat pla function will not allow files to execute it seems, so i do not use it anymore.
But I really need the parts cooler to work - i am getting good prints withoutt it but some stringing - they could quickly become great prints with proper cooling. Out of the box, this should not be an issue.
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