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Prusa core one input port overcurrent error  

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Bobster
(@bobster)
Eminent Member
Prusa core one input port overcurrent error

Hi, I have just started getting this error message on my Core One, Prusa core one input port overcurrent error, it happened when I started a print with PC filament. I have printed quite a few things with this filament and it has always printed successfully until this one. Having googled it all I can get is some long winded cure that entails taking half the machine to pieces which I don't want to do as I am confident that there is nothing wrong with it. After a few restarts where I got the same message it restarted without the error message. I decided to tell it to preheat using PLA settings and it did, so I asked it to preheat to the PC filament temperature, which it did. I then started the print that I was going to print when I got the error message and it is now happily printing away no problem.

Is anyone else experiencing this problem? I would love to find our why it happened as the error message tells me to turn off the machine and contact Prusa.

Posted : 05/05/2026 1:04 pm
jan.d.slay
(@jan-d-slay)
Reputable Member
RE: Prusa core one input port overcurrent error

Do you have a picture?

Mods for Core One: Core One HT 450 degrees, Comfortable display , Very fast print start and Reducing noises
Mods for Prusa XL: Very fast print start

Posted : 05/05/2026 7:49 pm
Jürgen
(@jurgen-7)
Famed Member
RE: Prusa core one input port overcurrent error

Google only finds "Heatbed port overcurrent" (#31309) and "USB device overcurrent" (#31307) errors for me. Please provide the exact error message and error code.

Posted : 05/05/2026 8:01 pm
1 people liked
Bobster
(@bobster)
Eminent Member
Topic starter answered:
RE: Prusa core one input port overcurrent error

I can only get a picture if and when it happens again, I will try printing something tomorrow. 

Posted : 05/05/2026 8:59 pm
Bobster
(@bobster)
Eminent Member
Topic starter answered:
RE: Prusa core one input port overcurrent error

Hi, Just an update, I just turned the Core One on and I got an error message but it wasn't the one I was hoping for, I have attached it as a file. I just restarted the printer and it started ok, I am now on my third print using PC filament and even though I turned the printer off and on again after each print I cannot get it to replicate the original error message and I'm afraid I didn't think to take a picture of it. I, like Jurgen could only find the error messages that he did but my error message definitely said "Prusa core one input port overcurrent error". I will keep trying to replicate the error message and I will come back when I do, Cheers, Bob

Posted : 06/05/2026 11:32 am
2 people liked
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