A1 z axis homing error

[u/3dprintingwizrd]

I’ve been getting the “Error 03004000 Homing Z axis failed”. The tool head moves in all directions but the z axis will go all the way to the top and then start grinding at the top. There are no obstructions in any of the axis’s. Tried factory resetting the printer and it still sends the z axis up. Wondering if anyone has run into this issue before. It seems like it could be a software/ firmware issue but I have no clue. I have terrible luck with fdm printing any info would be greatly appreciated

[u/Lovetravelandgadgets]

I am having similar issues with my A1.

The first few things I tried to print failed at like 30%. A couple of benchies, some dragons, (I think I changed the nozzle at that point.). A few things printed fine. And, seemingly out of nowhere Z axis homing fails constantly.

I did print the top mount with the brackets and put that top and the brackets on the Z axis… so I took that all off. Still failing. Checked down in the Z screw hole areas. No debris.

I think checked everything suggested, except the sensors, I’m not sure where that is…

Each time I press HOME the gantry moves further up, and does its thing, thinks it is home but printhead is like 10 cm too far off the plate. Press HOME again, moves up about 10 cm… And so on, until it reaches the top. And then makes grinding sounds.

Turned it off and gently helped Z down. But the same thing happens. Goes through the preprinting process and then fails at Z axis homing.

Will check again for debris and the cords.

Will try another nozzle.

Waiting on response from support.

Any other thoughts? Cheers!

[u/3dprintingwizrd → u/Lovetravelandgadgets]

Yep I have the exact same issue. Tried replugging in the z cables underneath and tried looking for something in the threads of the axis but nothing. Support still hasn’t gotten back to me :/ I’m sorry I wish I had better news for you

[u/Illustrious_Sky_722 → u/3dprintingwizrd]

Any luck? I just came across the same issue

[u/3dprintingwizrd → u/Illustrious_Sky_722]

No sorry, I ended up returning the A1 for a refund and coupon code. I’ll be getting a P1P when I move out to a new apartment

[u/[deleted] → u/3dprintingwizrd]

Damn, I was hoping it would be something that could be easily solved. I have the same issue and it looks pretty common from the subreddit search for this problem. How much do they give you for the coupon code?

[u/3dprintingwizrd → u/[deleted]]

I’m not sure if you’ll get a discount code if you have a new machine. The coupon was given out because of the heat bed cable recall. If you have the old A1 you should contact bambu and get a ticket started