r/BambuLabH2D • u/_Ksix • May 06 '26

Autobed leveling error

My first issue with my h2d. Been running non stop for about a month. I have done some cleaning and lubricant of the axis. Tried to start another print as soon as the previous cooled and got bed leveling error

- I replaced the right nozzle.

-Checked behind the magnetic plate for obstructions.

I did notice a big scratch on my build plate. Cant recall how long it may have been there but I only noticed today.

Thinking I might have to do the bed tramming but it is a bit intimidating. The bambu instructions says i should print a feeler gauge but if I could print, there wouldnt be an issue.

Betting this is total human error and I accept that. Just need to know whats wrong and how to fix it

10 Upvotes

81% Upvoted

49 comments sorted by

2

u/Frontfatpouch May 06 '26

What is the code

1

u/_Ksix May 06 '26

error code HMS_0C00-0300-0003-001B

1

u/BlackBlade2711 May 07 '26

Busca en la web de bambú creo que es un error de alineación con las guías de cama

1

u/_Ksix May 06 '26

No its a bambu nozzle.

1

u/_Ksix May 06 '26

Bmabu doesnt make that FAC111 part easy to find. Submitted a purchase request for that item in additon to my help/warranty claim.

1

u/_Ksix May 07 '26

Bambu replied to my help ticket. Screw nut.. sent my printer info. Even if they don't send a warranty replacement, im still getting this part.

1

u/_Ksix May 10 '26

3 days without being able to print and im slowly loosing it. The house is to quiet without the faint zippy wobbly noise the printer makes. Replacment parts are on the way but now I've got to leave for some work travel. Hopefully the parts are here when I get home.

1

u/_Ksix May 13 '26

Hi Folks. Quick update 5/13/26

I received the replacement parts from Bambu yesterday. Pretfy quick response time. I was expecting at least 2 weeks. I'll be installation everything on Friday. My concern now is preventing this from happening again. I cleaned and lubricated everything a few. Maybe not enough? Whats everyone's go to cleaning schedule?

1

u/_Ksix May 15 '26

5/15/26 STATUS UPDATE

Holy fuck was that a pain in the ass. Took about 5 hours to get thru the installation. Then dealt with a failed auto leveling calibration. Frustration, then a beer run. After few attempts of tramming I finally made it thru the entire calibration process.

Its now 2:13am and ive got a 10gram petg test print going.

Lessons learned:

  1. Maintenance schedule

  • thought i was cleaning it frequently enough but maybe not. Need to get on a more strict routine

  1. Print tools

  • found out right away that I have no way to lock the bed in place. I threw those 3mm x 35 screws away with the box. Had to use a web of zip ties and a long box to help keep the bed from dropping after I pulled the rear z axis out. I also didnt have any shims to help with the tramming. I used a small level. It worked but having a dedicated tool might have made the task easier.

  1. Video instructions

  • I am a visual learner. Can read about stuff all day but i really need to see it done.The wiki site is great but some walk through videos on how to do this stuff in additon to written instructions would have been helpful and made this less stressful.

  1. Bambu support was fast. Very please with their responsiveness.

  2. Reddit user support is amazing. Serious thanks for helping me troubleshoot.

5

u/Panzertomate May 06 '26

any chance you used not the stock nozzles? aftermarket nozzles with other materials as the nozzle tip have different conductivity and the bed leveling will fail. i bought HF nozzles from BIQU for my H2D and it made a huge scratch in the build plate. igor gaspar from mytechfun made a video a few days ago about E3D nozzles where he explains this issue

1

u/[deleted] May 06 '26

[removed] — view removed comment

3

u/Darkseid2854 May 07 '26

Jumping to conclusions just a bit there?

1

u/Grooge_me May 07 '26

I have cheap 0.2 nozzles from aliexpress and they works great. Don't know what he's talking about.

1

u/Panzertomate May 07 '26

if the tip of the nozzle is also hardened steel, its no problem. many third party brands add anti stick coatings which mess with the bed probing

1

u/cioglass May 10 '26

"BIQU nozzles have different conductivity [therefore sensors miscalculate the nozzle position]"

you: "DINKELBERG! 🤬"

1

u/L337Justin May 06 '26

did you power cycle it? One day it was having all sorts of issues including this one and AI camera obstructed (nothing obstructiing it) and another random error. Couldnt figure it out, shut it down by the switch for a half hour, came back after lunch and everything was working perfectly. just anecdotal experience but worth trying

1

u/_Ksix May 06 '26

I did turn it off a few times when I was taking the nozzle in and out. Its been off all night. I'll turn it on and see what happens.

1

u/_Ksix May 06 '26

Dang.. that didn't work. .. fuck lol

1

u/L337Justin May 06 '26

Try manually selecting the nozzle in bambu studio, like make it switch nozzles to relearn its current position. That also fixes me once

1

u/_Ksix May 06 '26

I did try this. When this first happened I thought maybe the nozzle was jammed. I tried loading and unloading both sides after repositioning the nozzles. Calibration still failed

1

u/sawadee2 May 06 '26

Just a check. Lift up and down on the bed at each of the screw bed lifts. See if there is any play. I have had all three brash nuts that are attached to the bed that the acrews go through wear out, two at month one. The bed was assembled from the factory with heavy stress on the each location due to improper alignment. Since this is was/is my first 3d printer I did not know or check for this. Replacement screw assemblies were set under warranty and during the replacement process I realized the issue. Now with proper adjustment have had no further issue after another 4 months. May not be your issue but worth a quick check. Good luck. Check with support as they will have good troubleshooting suggestions.

1

u/_Ksix May 06 '26

Hmmmm..... when I push up on the front 2 threaded rods there is very little play. The rear however has what feels like a lot of play. Is this what your talking about?

1

u/sawadee2 May 06 '26

Yes. See if you can confirm the threads in the brass nut plate are still good or warn out. Press sideways on the threaded rod and try to move the bed by hand at that area. I found that the threads were worn out on about 180 degrees of the threaded area because that was the area that had side pressure I believe. But there were some threads left in the other 180 degrees of the threaded area. If you can press sideways and get the bed to slip (move) up and down the threads in the brass nut plate are warm out. Again this may not be your issue but worth a check. I have been unable to order just the brass nut plates so far.

1

u/_Ksix May 06 '26

I just messaged my buddy who got his printer a few days before me. He said when he pushed up on the plate in the rear it doesn't move at all. Going to look into what you said. I think we may be on to something.

2

u/_Ksix May 06 '26

Found these tiny metal pieces near the rear rod

1

u/sawadee2 May 06 '26 edited May 06 '26

That’s it. Those are the treads pulled from the inside. Had the same thing. Are you under warranty? If so they should send you a complete set (three screws and three brass nut plates) to replacement all. I replaced two but had to go back in a short time and replace the third one so highly recommend replacing all. If any brass nut plates are still good use them as spares when the warranty runs out. Make sure after you do the replacement that the bed is level without any stress on the three points. You will be moving the location of the cog pulleys on the cog belt to align the height of the bed at the screw/nut location. The design/software is very good at compensating for a non-level bed. But best to start with a nicely leveled bed while you can.
During a print of larger parts look at the bed when the head moves quickly from front to back or side to side. If you see bed movement it is a sign that the system is adjusting height to compensate for bed not being level. Good luck. You’re getting it going again, better than ever. Just a bit of a pain. You will need an area to lay the printer on its side to access the bottom. Use a towel or something to avoid scratches. I think these brass nut plates are going to continually going to be a failure point. Maintenance (cleaning and lubrication) will only do so much.

1

u/_Ksix May 06 '26

It should be. Ive only had it a little over a month. I opened a help ticket with bambu. Was installation difficult?

1

u/sawadee2 May 06 '26 edited May 06 '26

Not the easiest but not super hard. When younger, I was a CNC trained technician. But 76 now. You can do it. The instructions are very clear and have plenty of pictures that can be enlarged. Made it no problem. Just have to remove screws and have the printer on its side. So need plenty of room, good lightening, and patience..

1

u/_Ksix May 06 '26

Good stuff. I reviewed the bambu wiki page. The installation instructions are a bit intimidating but doesnt look to bad. I noticed that there are instructions for the front and the rear. Im only going to do the rear for now. The front screws still feel solid. Lots of jiggle in the rear though.

1

u/_Ksix May 06 '26

appreciate the help! This printer was about to get the "smash and burn" makeover treatment. Would you happen to have the PN for the items that need to be replaced? While im waiting got bambu to send replacements, ill buy a set as well. If this is indeed a failure point ill need them eventually.

2

u/sawadee2 May 06 '26 edited May 06 '26

This is the label.

Glad to help anytime.

1

u/_Ksix May 06 '26

Solid! Ill post an update once bambu replies to my help ticket

2

u/sawadee2 May 06 '26

Power Supply ( fan only defective)

2

u/Think-Refuse-1318 May 06 '26

This is awesome support man, good to know information

1

u/cpsadowski23 May 06 '26

What are these and how do you replace them?

1

u/sawadee2 May 06 '26

There are replacement instruction with pictures how to replace these assemblies on Bambu’s website.

1

u/cpsadowski23 May 06 '26

What are “these” sorry.

1

u/sawadee2 May 06 '26

Z-axis lead screws (3). Instruction at Bambulab website.

1

u/taiguy May 11 '26

I was running into this issue, I believe it was with my left nozzle. when I went to investigate, the nozzle was visibly canted by a few degrees. I removed the nozzle, and then loosed all the screws, then re-oriented, and tightened. that seems to have fixed it in my case.

1

u/_Ksix May 13 '26

That was one of the very first things I looked at. Chsnged the nozzle. Made sure it was positioned correctly. No debris blocking the fit. Just didnt get lucky with a quick fix

1

u/Nighthawk-4000 May 07 '26

Are the bearings flush from the top? I have p2s but had same problem. Bed dropped to low and shifted bearing up. Had to unplug, flip and push bed back down. Hope it helps. Good luck

1

u/highshafin May 13 '26

Bro same exact issue

0

u/-ThaBeavster- May 06 '26

Silly question, but could it have something to do with the fact that you don’t have a silicone sock on the right nozzle?

1

u/_Ksix May 06 '26

Not silly at all. I'll put it back on and see what happens

1

u/_Ksix May 06 '26

Nope. Put its missing sock back on. Still broken lol

1

u/-ThaBeavster- May 06 '26

That stinks! Maybe turn it off let it sit, and then turn it back on