1

So basically it’s not doing anything right.

My Wanhao i3 Plus worked fine for two prints then stopped printing after about 10 layers into the 3DBenchy model. Now it doesn’t home (it keeps moving even after the microswitch is pressed) and I don’t know what to do. Is there a way to fix it or do I just need to contact Wanhao and get it replaced?

n.b. I tried printing different models after the Benchy failed but they didn’t work either.

2

Which axis keeps moving? Generally this is a sign that the endstop wiring was loose and came disconnected.

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3

x-axis

And I’ve checked the connector is in properly

Edit: Turns out re-booting fixed the homing issue, maybe it’s not a great connection so it stops working sometimes?

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4

Are you printing using a USB cable or an SD card? If it’s the SD card, is it the one that the printer came with? The card the printer came with is most likely fake. I ran into my prints stopping after a few layers and it was just because the card was out of space.

5

Replace the defective micro switch. They are cheap and can be purchased online. Print using an SD card. If the problem persist buy a new SD card. Make a visual check of your end stops for looseness and connection to PC board. The benchy is stress tester on printers and all that motion of the hotend and axis may have undone a connection that may have already been loose.

6

I think you should chek wiring first. Check them on your end stop switch & inside control box. If they ok, maybe the end stop switch is broken. If you have warranty active, you can contact you wanhao dealer & tell them about your problem then maybe they send you a new end stop switch or even replace full printer. Good luck!

P.S. I use wanhao v1 more than 1 year, I printed on it 10 km of filament & over 70 days. Printing only from SD, not from PC!

7

Which axis isn’t homing

8

If the x axis isn’t homing, make sure that the ribbon cable is attached tightly to the extruder and where it plugs into the base of the printer. This ribbon cable powers the x axis endstop and everything on the extruder. If it is not the x axis or extruder that is faulting you, make sure that all the cables going to the stepper motors are plugged in tightly. Open up the bottom of the printer to reveal the power supply and main board. Make sure everything there is secured tightly. They have a habit of making themselves loose. If this doesn’t fix your printer, try printing directly from your computer with USB and if you are already doing that, try printing with the sd card. One of those methods may have had some glitches. Use the original wanhao cura software that came with your printer. You may have configured your software wrong. If this doesn’t fix printer, you may have a bad main board or some bad cables. Check so make sure none of your cables around your printer are cut or bent at a sharp angle or stretched.

9

This happens to me quite often between prints. Instead of Homing the X axis, it moves the X axis in the + direction a few millimetres. I use “Motors off” in OctoPrint or “Disable Drive” in the touchscreen controls (i3 Plus) and then homing works correctly again.

I believe this is a bug in the firmware which has since been fixed, but there’s another bug which prevents me from updating my firmware :frowning:

10

Aside from checking all your end stop wiring for correctness and fitting. Make sure your printer is connected straight to wall socket. Printers tend to behave eradict if connected to extension cord and the like.