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prusa3d / Prusa-Firmware-Buddy

Firmware for the Original Prusa MINI, Original Prusa MK4 and the Original Prusa XL 3D printers by Prusa Research.
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[BUG] MINI - Print Fan error at 2nd or so layer but all tests passed #3260

Open davcin opened 10 months ago

davcin commented 10 months ago

Printer type - [MINI]

Printer firmware version - 4.4.1

Original or Custom firmware - Original

Optional upgrades - Filament Runout Sensor

USB drive or USB/Octoprint USB flash drive

Describe the bug After upgrading the Firmware to 4.4.1 I started to get the Print Fan not working error. It wasn't happening before the upgrade. Done the self test and the fan testes and the fan works (all tests passed). This error stops printing since it always fails.

How to reproduce Print using the 4.4.1 firmware. I guess it doesn't happen to everyone since there would be allot of reports of that, so I assume it must be something specific to my printer. I can't recall from what firmware I upgraded from but I didn't do a factory reset after upgrading.

Expected behavior Print without error. For this, I disable the fan check, not sure if it is a good idea but had no choice. After disabling the fan check, the print doesn't stop and the print fan does turn on.

G-code Any G-code I tried.

Crash dump file (none)

Video (none)

laird2205 commented 8 months ago

I have the same issue. Started after going to 4.4.1+4194. If I am looking at it correctly, the previous firmware on my usb stick is Buddy_4.3.4+2835.bbf . I haven't turned off the fan check yet. I will try that.

m-klecka commented 8 months ago

Same issue on 5.1.0 alpha2, but was happening before too. Self tests show everything ok.

evxjson commented 7 months ago

One of our printers with 5.1.0 alpha2 has this issue. All self tests shows ok.

Moyrn commented 7 months ago

same issue here. i was on 4.4.0 all fine since months. moved to 4.4.1 to instantly jump to 5.1.0 (eager to test the input shaper)

impossible to print : print fan error

Self test is KO on the print fan on my side as well i tried a factory reset... no change

Moyrn commented 7 months ago

Strange thing : I removed the print fan and the self-test was still KO - though RPM still reportingI then noticed the yellow wire was quasi loose. touching it and it was brokeni then resoldered it, and made another self test in free air : passed OK - reporting something like 7800RPMi mounted it back fully : passed OKI renabled "check fan"I launched a print : passed OK

So possibly a pinched or loose cable in my case. Firmware is just performing tests which were not there before.

tjjos commented 7 months ago

Same thing is happening to me after I upgraded to 5.1.0. I really don't want to disable the fan check. Is there any other solution for this?

Moyrn commented 7 months ago

on my side i fixed it by resoldering a faulty yellow wire on the fan. so not a firmware issue, but a less permissive firmware - i guess

tjjos commented 7 months ago

That's definitely not my issue, as the fan is spinning while printing, but the error keep popping up.

Moyrn commented 7 months ago

ok ok.

On my side that was also what i had. fans were running fine, even in my hand. I could see the RPM very high during the fan test... It was spinning then indicated "failed". i was puzzled.

So i checked, and saw that the yellow wire was "almost" loose. When removing the sticker, the yellow wire got out.

So i suppose the fans are ok - but the RPM read value (yellow wire) raises issues.

Sure sure. maybe not your case. there are several cases bringing to that issue. but i wanted to be clearer

Le mar. 5 déc. 2023 à 19:59, Jose Luis Gutierrez @.***> a écrit :

That's definitely not my issue, as the fan is spinning while printing, but the error keep popping up.

— Reply to this email directly, view it on GitHub https://github.com/prusa3d/Prusa-Firmware-Buddy/issues/3260#issuecomment-1841440840, or unsubscribe https://github.com/notifications/unsubscribe-auth/AJMGMSPCH66K3EJVKA64EIDYH5VKNAVCNFSM6AAAAAA4SC5TYCVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMYTQNBRGQ2DAOBUGA . You are receiving this because you commented.Message ID: @.***>

github-actions[bot] commented 1 month ago

This issue has been flagged as stale because it has been open for 60 days with no activity. The issue will be closed in 7 days unless someone removes the "stale" label or adds a comment.

Makeneer commented 1 month ago

Same issue on MK3.5 after upgrade from MK3S+

I have upgraded my Prusa i3 MK3S+ with MMU2S to Prusa i3 MK3.5 with MMU3. Before the upgrade I had no problems with my printer and I have printed all necessary parts for the upgrade with no problem at all.

After the upgrade everything looked fine, the self-test passed with everything OK and printing was no problem until a couple of layers where printed. After a couple of layers my printer gave an error on the print fan. I have checked the wiring and connectors, checked the working of the fan with the available menu options and did the fan test again. Everything seems to be OK.

But my printer is still giving the same print fan error after a couple of layers. I have changed the slicer profile so the print fan is running from the first layer and made a new test print. The fan is running OK from the start of the print but after a couple of layers the printer is giving me the same error again.

I have checked the working of the print fan over the complete X-axis range a couple of times and it is working OK every time and every test.