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UM3 Auto Levelling Not Working


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Posted (edited) · UM3 Auto Levelling Not Working

Pro Ultimaker Tip:

When printing in white material, don't assume some of it got caught in the front fan because you see a little bit in there when you open the cover.  It MIGHT just be the white wire going to the fan!  I didn't realize what I had cut out until it was too late.  🥴  Don't forget to wear your reading glasses!

 

My cover had popped open during printing, got caught on part of the print and caused the steppers to skip, ruining the print.  When I aborted, everything stopped but it didn't go through the normal abort procedure.  The head just stayed there melting my print.  So I turned it off/on.  I had to bend the cover a bit to get the magnets to properly align with the two long screws.  In doing so, or when the cover slammed into my print, the sensor wire must've come a bit loose.  I got the dreaded, "There is a problem with the active level sensor." message.  Thanks @leliep for the images.  It really helped me tear everything down and thread it all back together again.  I got lucky re-soldering a tiny wire to the trace on the front-facing fan's circuit board! Both Active Leveling & the front fan are operational again! 😃

Edited by randyinla
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  • 9 months later...
Posted · UM3 Auto Levelling Not Working

HI,

I have 2 units Ultimaker 3 Ext exactly with same problem, been leveleng them manually for some time already, both have wire broken with little use. This is a serious design fault !

 

I must say that 1 unit long time ago went to reseller (and after many days without it impacting our production)...returned exactly as it was sent.... they told s that there it was working fine... but here continued to to level automatically, only manual.

very sad !

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