Heatbed Port Overcurrent #31309 (CORE One) #26309 (MK4S) #1…

What happened?

Your printer is showing the message: "Overcurrent detected on xBuddy/Buddy heatbed port, disconnect the device."

Error name: Heatbed Port Overcurrent

Error code: #31309 (CORE One) #26309 (MK4S) #13309 (MK4) #27309 (MK3.9S) #21309 (MK3.9) #28309 (MK3.5S) #23309 (MK3.5) #12309 (MINI)

The error is shown when there is a damaged cable on the heatbed or any of its connections.

How to fix it?

Before manipulating any cables or electronic components, ensure the printer is fully cooled down to room temperature and switched off.
Avoid touching the surface of the xBuddy/Buddy mainboard, touch it only from its edges.

The most likely cause of this issue is damage to the heatbed cable. Check the path between the heatbed and the xBuddy/Buddy board, and see if there are any parts that are broken or pinched.

In case there is no damage, check the cable connection to the heatbed and to the xBuddy/Buddy board. Try reconnecting the connectors.

In rare cases, this error message can be shown in case of damage to the mainboard. So if the cables and connectors are intact, try checking the board for any damage.


CORE One heatbed	MK4/S, MK3.9/S, MK3.5/S heatbed

xBuddy board (CORE One, MK4/S, MK3.9/S, MK3.5/S)


MINI/+ heatbed (bottom)	MINI/+ heatbed (top)

MINI/+ Buddy board	MINI/+ Buddy board

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18 comments

Brandonforgie

•

So I constantly get this error. And cable is fine. Heat bed is fine. Not sure about the buddy board.
But when this happens, if I first preheat the printer to what ever filament I’m using, and let the printer get up to temp, then start what ever print. I no longer have the printer error out and restart. Leads me to believe it’s a coding/programming issue somewhere.

LuMaHa

•

With Firmware 6.2.4+8909 (MK4), this message also gets triggerd by overcurrent in the hotend heater-circuit, which is confusing and should be fixed.

Blockhead

•

Ich hatte vor einen druck mit 230 grad Düsentemparatur zu drucken. Nach ein paar schichten hab ich eine Redscreen mit der QR-Code Fehlermeldung 31309 bekommen. Ich habe alle kabel überprüft und die Platine hat keine offensichtlichen schäden. Ich habe gedacht wenn ich den treiber neu lade dann funktioniert es wieder aber leider schmiert er mir jetzt jedes mal nachdem er alle achsen refferenziert hat ab und nach dem er wieder neu hochfährt bekomme ich die Fehlermeldung.

austinsmithyrex

•

I have the same problem, wires are all good, connections tight and board is in good shape (only been in service about 6 months) I don’t see any damage to bed or anything. Any ideas?

thebbb

•

I have an MK3.5, the heatbed is 5 years old and the black paint on the bed is damaged here and there. That caused a short, through a structured sheet. Without the sheet, there was no short. I fixed the problem by applying heat resistant paint to the damaged areas (barbecue paint).