#13309 Heatbed Port Overcurrent While Cleaning Nozzle
Hello,
I am currently stuck, and need help with this error.
What happened:
- I set the temperature of my the brass Nextruder 0.4mm Nozzle to 250ºC using the LCD panel.
- Controls -> Temperature -> Nozzle -> 250ºC
- I sprayed Isopropyl Alcohol (80% concentrated) onto a paper towel.
- I began cleaning the Nozzle by wiping around the Heat Block and the Nozzle.
- The Prusa Mk4 rebooted, and displayed this #13309 Heatbed Port Overcurrent.
Steps I have taken so far:
- Updated firmware
- Inspected wiring, looked for pinches
- All steps detailed in this article: https://help.prusa3d.com/article/heatbed-port-overcurrent-13309-mk4-21309-mk3-9-23309-mk3-5_405612
- Rotated/nudged hotend back and forth by 10º 3 times.
- Probed power wires with a multimeter.
- The hotbed out power wires do indeed seem to be shorted
- The hotbed in power supply wires are not shorted
Do I just need to replace the wires? Is the heatbed potentially damaged? Why did cleaning my nozzle cause this?
I don't know what to do next.
Here is a shared photo album that you can view from Google with visual documentation of my process (I also added pictures to this post, in case Google drive link breaks): https://photos.app.goo.gl/tDYmTFL3htiqtcV1A
I also sent an email to support, but I am cross-posting here for visibility and archival purposes.
Regards,
Dave
RE: #13309 Heatbed Port Overcurrent While Cleaning Nozzle
Update, I found this guide, and I am going to redo my Multimeter testing following this.
RE: #13309 Heatbed Port Overcurrent While Cleaning Nozzle
So the heatbed actually works fine, it's not "shorted" it the values look similar in resistance to what is to be expected. I am also able to heat the heatbed perfectly fine.
My Prusa Mk4 reboots with the heatbed over current error message every time I turn the Hotend Nozzle temperature on.
RE: #13309 Heatbed Port Overcurrent While Cleaning Nozzle
So far, I have confirmed that the heatbed still works and can be controlled via the xLCD.
The hotend still seems to work as well. I am able to power this manually, and it responds to the current, but activating it via firmware will produce the "Heatbed Port Overcurrent Error" 100% of the time.
At this point, I believe something may be wrong with the xBuddy or LoveBoard. Does anyone have any pointers on what I can test to isolate the issue on the board?
RE: #13309 Heatbed Port Overcurrent While Cleaning Nozzle
This issue in the Prusa-Firmware-Buddy repo looks similar... A new xBuddy board was the fix in a couple cases.