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stemrox
(@stemrox)
Member
Printer "Busy" when nothing is being printed

After being able to print for a few days, I turned my machine off and then back on and PrusaLink and Connect are both showing it as "Busy" and I am unable to print. Here are my specs, please help! This is super annoying.

Printer: MK3S plus MMU3

Rpi W2

Firmware: 3.14.1-8237

API 2.0.0

Server 0.8.1

Text PrusaLink 0.8.1

SDK 0.8.1

Frontend 3.12.0

Posted : 18/03/2025 1:44 am
1 people liked
BeckTuning
(@becktuning)
Member
RE: Printer "Busy" when nothing is being printed

I have the same issue I have found that pressing the reset button on the front display clears up the busy issue but now prusa connect is not recognizing the printer as having a MMU3 when I try to send files. Works fine manually just not with prusa connect. 

Posted : 20/03/2025 2:05 pm
Alexander Steinke
(@alexander-steinke)
Member
RE: Printer "Busy" when nothing is being printed

I have been having this issue for a few months now. The fix I have found is to go to the settings on the printer and toggle off the MMU and then toggle it back on. Once the MMU runs through its startup process I can see my printer as "ready" in connect. The printer seems to show "busy" after power is turned off and back on most of the time and I need to toggle the MMU to get it to come back to "ready".

Posted : 08/04/2025 12:49 pm
Ankers_Schildschmiede
(@ankers_schildschmiede)
Member
RE:

Tried the "MMU-Reset" aswell. sure, it's ready after this, but it looses the MMU in Connect. Pretty annoying. Do you guys have the same issue? Maybe important: I use 3.14.1 Revo FW
Only thing helping up to here is to delete printer from connect and connect it again..

This post was modified 2 months ago by Ankers_Schildschmiede
Posted : 08/04/2025 3:45 pm
TimeMaster
(@timemaster)
Member
RE: Printer "Busy" when nothing is being printed

Yes, the same problem here 🙁 also workaround works the same.. 

I was also successful with printer reset as it doesn't reset the RPi, only the printer, but as the MMU off/on is sufficient, I do that instead.

Posted : 04/06/2025 7:59 pm
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