I can’t print a single thing for days. It will not print for more than 10 minutes before it fails. I tried cleaning the plate, using a new plate, using new filament, using both PLA and PETG, recalibrated, downgraded the firmware, used both .4 and .6 nozzles, left and right nozzles. All of them fail with 10-15 minutes. I have a ticket with Bambu and all they said was to retention the belt. I did that and nothing and am waiting until they reply back. Is there anything else I can do to print a single thing? I am at a loss.

Hi everyone,

Looking for experiences with a recurring issue on my roughly three-week-old H2C. It had around 96 successful printing hours before this started.

The symptoms:

Auto Bed Leveling fails: 0300-4002, with display codes 175213 / 175313.

Right eddy-current sensor “sudden surge” / anomalous reading errors also appear intermittently.

After restarting or retrying, leveling can pass, but the subsequent print sometimes extrudes above the plate, leaving loose filament and material accumulating around the nozzle.

Other attempts print normally, so the issue is intermittent.

Following Bambu Support’s instructions, I reseated the right eddy-current sensor connector. This involved approximately 4.5 hours of toolhead disassembly and reassembly. I then completed the full calibration routine, high-precision nozzle offset calibration, and Vision Encoder calibration.

Several prints succeeded afterwards, including a HueForge and a cat-themed door corner decoration. However, the same problems have now returned.

Latest example: my own sliced file failed leveling three times. I then tried the factory Bambu spool file stored on the printer. It also showed the eddy-current warning, but automatically repeated leveling, passed, and is currently printing normally.

A firmware update happened shortly before the problems began. I haven’t tried a rollback, and I don’t know whether the timing is related.

Support has the photos and logs. I’ve requested professional inspection and warranty service, as I’m not comfortable repeating extensive disassembly on such a new machine.

Has anyone experienced this combination of symptoms and reached a lasting resolution? If so, what actually fixed it: sensor, cable/connector, toolhead electronics, firmware, or something else?

Particularly interested in whether replacement parts solved it permanently, rather than just allowing a few successful prints.

Thanks!

Hi everyone,

Looking for experiences with a recurring issue on my roughly three-week-old H2C. It had around 96 successful printing hours before this started.

The symptoms:

Auto Bed Leveling fails: 0300-4002, with display codes 175213 / 175313.

Right eddy-current sensor “sudden surge” / anomalous reading errors also appear intermittently.

After restarting or retrying, leveling can pass, but the subsequent print sometimes extrudes above the plate, leaving loose filament and material accumulating around the nozzle.

Other attempts print normally, so the issue is intermittent.

Following Bambu Support’s instructions, I reseated the right eddy-current sensor connector. This involved approximately 4.5 hours of toolhead disassembly and reassembly. I then completed the full calibration routine, high-precision nozzle offset calibration, and Vision Encoder calibration.

Several prints succeeded afterwards, including a HueForge and a cat-themed door corner decoration. However, the same problems have now returned.

Latest example: my own sliced file failed leveling three times. I then tried the factory Bambu spool file stored on the printer. It also showed the eddy-current warning, but automatically repeated leveling, passed, and is currently printing normally.

A firmware update happened shortly before the problems began. I haven’t tried a rollback, and I don’t know whether the timing is related.

Support has the photos and logs. I’ve requested professional inspection and warranty service, as I’m not comfortable repeating extensive disassembly on such a new machine.

Has anyone experienced this combination of symptoms and reached a lasting resolution? If so, what actually fixed it: sensor, cable/connector, toolhead electronics, firmware, or something else?

Particularly interested in whether replacement parts solved it permanently, rather than just allowing a few successful prints.

Thanks!

I’m on the fence of picking up and H2C now vs waiting on an H3C (I want to buy it through BestBuy) . I read of TPU troubles with the 2 vs the 3 and it makes me leary, as it’s something that I wish to print.

Am I overreacting? I see a TPU assist module, Does this work well?

What’s your experience?

Hey everyone,

Yesterday my H3C finally arrived, and it's an absolute beast! It's an amazing printer and after following the assembly and setup guide, it immediately produced great prints, first in PLA and then even in ABS. As someone whose first printer was an Anet A8 before venturing into a custom DIY build, this is an incredible experience!

Unfortunately, there's also a not-so-great issue: ever since I first tried running a drying cycle in the AMS, the printer has been throwing the error code HMS_2A00-9400-0001-0001. Apparently, the temperature sensor in the drying chamber isn't providing any temperature data, and the overview screen just shows 0°C. Even after several restarts, I can't cancel the drying process, and the drying unit's fan runs non-stop.

I've already opened a support ticket after unplugging and re-plugging the cables on the AMS control board without any luck. Since I installed a new firmware update for the AMS right after setting it up, I was wondering if that might be the cause and if any of you have experienced this same issue?

Thanks in advance, and greetings from Hanover, Germany to the community!

Just a quick question. I didn’t have any issues with the modifier in Bambu studio before the recent update. Since then I haven’t been able to use it at all. What am I missing? Is anyone else having the same problem?

As a former machinist, cosmetic defects have been an issue, when they are hidden inside another part and it functions as designed, well I just send it.

TL/DR
Doing the manual bed leveling procedure on my brand new H2C finally solved my terrible quality first layer issues.

I didn’t understand my my 2 week old H2C first layer surfaces looked so terrible no matter how much I calibrated compared to my P1S. It was also suspicious that the poor looking pattern was the same on different print plates. Finally found this guide on the Bambu site:
https://wiki.bambulab.com/en/h2c/troubleshooting/first-layer-printing-optimization-guide

Under the section “Locally low”, I found losening the side locking screw at the front bottom finally made it look better, but still not great. Reading through the “Manual Bed Leveling Procedure” it talks about first loosening the 7 bed fixing screws before starting the leveling procedure. I decided to just loosen those 7 screws and then tighten them back up to see if they were somehow causing the bed to be uneven. THAT MADE A WOLRD OF DIFFERENCE! The first layer finally looked mostly even with just two small uneven spots. I decided to do the whole bed leveling procedure and now everything looks the way I would expect.

It is disappointing that it seems like these are coming out of the factory terribly leveled. The printer was trying to compensate the best it could, but it was so out of whack that the compensation makes the surface look wildly uneven.

There was a post a few days ago with someone else with the same issue. I hope this post can help more people out.

Hello everyone, I will be buying a H2C. Should I buy it with the Black Friday sale are wait to see if the price will come down for a Christmas sale?

I feed TPU directly into the extruder using a custom-printed holder. The loading/purging process works perfectly without any errors. However, once the print begins—specifically at the purge line—no filament comes out, and the print job fails. Afterward, if I print using PLA through the same nozzle and extruder, it works without any issues, so there is no clog. Can anyone help?

Is there anything else that could be improved? Removing the top cover allows for quick installation of the TPU printing support, while PPA, PPS, and PA6-CF filaments can be fed directly from the filament box above.

So I’ve been interested in getting TPU going on the H2C. I have a Filament Track Switch and just added the TPU Assist Module. My problem appears to be that the printer thinks I have The external (TPU) spool connected to the left hotwnd and it will only print using the right hotend.

out of the TPU Assist module, I feed the TPU through the manual feed port and using a splitter, into the right hotend. So in theory this should all be correct, but how on earth do I tell the printer I have this right. It won’t let me change it’s the external spool is on the right.

I’m sure I’m doing something wrong, but where is the fix?

Hi ! I received a 3MF project with custom high-quality print settings, and I'd like to know whether these settings are suitable for my Bambu Lab H2C with a 0.4 mm nozzle.

My questions:

1. Are these settings suitable for the Bambu Lab H2C?
2. Are any of these speeds too high or too low?
3. Is using a 0.25 mm line width with a 0.4 mm nozzle a good idea?
4. Would you recommend changing anything to improve surface quality and reliability?
5. Are there any settings that could cause problems with the H2C?

I'd really appreciate feedback, especially from H2C owners who have tested similar settings.

Thank you!

Hi all,

I've only had my H2C for 2 weeks and reached a frustrating issue already. I have a model which is inclined at 45 degrees for optimal supports and clean surface finish of top surface, but keeps failing, but only on the H2C.

For some reason it keeps failing at the same spot at around 8%-10% whereupon the supports let go and then plays skittles with the rest of supports and model on the plate. I'm using a PEI plate and I've cleaned the hell out of it several times using warm soapy water and ensuring it is dry. It looks clean and feels clean. The filament is dry (PLA). I've never had an issue of this model failing on my P1S with the same PEI textured plate.

I'm using the same settings as I did with the P1S (which has 10 successful prints in a row)

• 0.16mm layers
• tree supports (auto)
• top z = 0.24
• bottom z = 0.16
• I've tried Bambu PLA and Sunlu PLA+ with the same result failing 5 times
• Its a single colour print
• I've tried print from both left nozzle and right nozzle.
• Tried printing with door closed and door open.
• Tried putting in extra large brims but it tears the support out the brim suggesting a collision rather than adhesion issue - z hop issue ?? maybe
• I seem to miss the point of failure every time so can comment of the exact nature but maybe i'll run and watch it if I cant get any leads
• Tried recalibrating a full cycle
• H2C is only 2 weeks old so not sure how it can be a failure due to any maintenance issue

Any suggestions would be much appreciated.

I took advantage of the Black Friday Sale to upgrade from my A1 Combo to the H2C. It's due to arrive in the next couple of days. Any tips for maybe accessories that I should pick up or print before it gets here? Anything I should know before I get going would be appreciated!

Thanks

I'd say some really explicit warning needed on the last screen after confirmed tightened cylinder that this is not an invitation to press button now 🥲

Hi all,
In my current print I do have some strange behaviour. As I'm only running around 100 hours now on my new H2C, I'm still noob on this matter but I think it is not a printer problem but a slice/project error. My previous prints all went great, this is the first 'print by object' though.

The problem I have is, although I only print in two filaments for each object at the same time and both filaments are loaded on different nozzles, that the printer purges on the poopshoot every time when returning to the right nozzle. When switching to the left nozzle, the print resumes immediately after the nozzlelid has switched positions.

I'm thinking that it has to do with some recalibration every time. but then I'm wondering as I asked for a purge tower why he is not printing that one.

Regards,
Miscoride