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[BFW-5652] Needless Filament Unload Procedure, when MMU Print is cancelled in the Warm Up Phase #3955

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JWartenberg opened this issue Apr 27, 2024 · 7 comments · Fixed by #4031
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[BFW-5652] Needless Filament Unload Procedure, when MMU Print is cancelled in the Warm Up Phase #3955

JWartenberg opened this issue Apr 27, 2024 · 7 comments · Fixed by #4031
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@danopernis
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@JWartenberg
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Printer: MKS 3.5 + MMU3
Printer FW: 6.0.0
MMU FW 3.0.3

Scenario:

  • Starting a MMU Print
  • Cancel the print in the heating phase, before filament is loaded for the first time

Printer proceeds the filament unload procedure (heating up, ramming, ...) although no filament is loaded.
The procedure is needless in this case.

Best regards
Jochen
@JWartenberg JWartenberg added the bug Something isn't working. label Apr 27, 2024
@danopernis danopernis added the MMU Issues related to multi-material unit label Apr 30, 2024
@firetech
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firetech commented Jun 2, 2024

Was just about to report this, glad someone else did it already. One would think that the printer would realize that no filament is loaded, since both FINDA and FSensor are showing OFF on the unloading screen...

@Mercur13
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Mercur13 commented Jun 3, 2024

have the same issue here MK3.5 Fw: 6.0.1

@firetech
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firetech commented Jun 3, 2024

There is a workaround, albeit slightly annoying.

If you reset the printer (reset button) instead of stopping the print in this stage, you will not need to unload (if you reset after stopping the print, the printer will think it has filament loaded even after reboot).

krx added a commit to krx/Prusa-Firmware-Buddy that referenced this issue Jun 6, 2024
@krx
mmu3: skip unloading filament on early abort
66240c5 
checks if filament is loaded before queuing M702

fixes prusa3d#3955
@krx krx mentioned this issue Jun 6, 2024
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danopernis pushed a commit that referenced this issue Jun 6, 2024
@krx @danopernis
mmu3: skip unloading filament on early abort
024103c 
checks if filament is loaded before queuing M702

fixes #3955
@danopernis danopernis added the scheduled We are working on it or we have scheduled it for one of the next releases. label Jun 6, 2024
@danopernis danopernis self-assigned this Jun 6, 2024
@danopernis danopernis reopened this Jun 6, 2024
PinkPandaKatie pushed a commit to PinkPandaKatie/Prusa-Firmware-Buddy that referenced this issue Jun 20, 2024
@krx @PinkPandaKatie
mmu3: skip unloading filament on early abort
9b854e6 
checks if filament is loaded before queuing M702

fixes prusa3d#3955
@MarkusReichart MarkusReichart mentioned this issue Jun 28, 2024
Closed
PinkPandaKatie pushed a commit to PinkPandaKatie/Prusa-Firmware-Buddy that referenced this issue Jul 3, 2024
@krx @PinkPandaKatie
mmu3: skip unloading filament on early abort
5ef07e4 
checks if filament is loaded before queuing M702

fixes prusa3d#3955
@danopernis danopernis changed the title Needless Filament Unload Procedure, when MMU Print is cancelled in the Warm Up Phase [BFW-5652] Needless Filament Unload Procedure, when MMU Print is cancelled in the Warm Up Phase Jul 8, 2024
@danopernis
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This is scheduled for next minor (not patch) version of the firmware.

@danopernis
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New version of the firmware 6.1.2 should contain the fix, can you test that?

@danopernis danopernis reopened this Aug 22, 2024
@danopernis danopernis removed the scheduled We are working on it or we have scheduled it for one of the next releases. label Aug 22, 2024
@JWartenberg
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JWartenberg commented Aug 23, 2024 via email

@JWartenberg
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JWartenberg commented Sep 1, 2024 via email

@danopernis danopernis removed the MMU Issues related to multi-material unit label Sep 2, 2024
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[BFW-5652] mmu3: skip unloading filament on early abort krx/Prusa-Firmware-Buddy
4 participants
@firetech @danopernis @JWartenberg @Mercur13