¶ What it is
During the printing process, the filament hub motor of AMS assists in feeding the filament to the printer, reducing the resistance of the toolhead extruder to extrude the filament, and the motor will detect the resistance of the filament when the resistance continues to be too large and the speed of filament is too small, it will prompt overload error.
The picture below: the motor of the filament hub
¶ Possible reasons
This error is usually caused by excessive resistance due to the following reasons:
- filament tangled or sagging and stuck
- the spool size exceeds AMS specifications or the cardboard spool is used
- the feed funnel of the first-stage feeder is seriously worn
- the roller support of the first-stage feeder was broken
- the spring of the AMS buffer is stuck
- the PTFE tube inside AMS is worn
- the PTFE tube between AMS and printer is overbending
¶ Operation guide
¶ Step 1: Check if the spool conforms to the specifications or if any deformation is present
Please refer to this wiki to check if the spool used are within the AMS specifications; check if the width of the spool is between 50~68mm and the diameter is between 197~202mm; some spools may be deformed; please rotate the spool back and forth to check whether there is too much resistance at any position.
¶ Step 2: Check if the filament is tangled or sagged and stuck.
Please avoid using filaments unsupported by AMS, such as TPU/damp PVA.
¶ Step 3: Check if the feed funnel of the first-stage feeder is seriously worn.
If there is wear, please refer to the wiki for replacement.
¶ Step 4: Check if the spring of the AMS buffer or Hub is stuck
The example on the left shows a stuck spring, while the example on the right demonstrates a properly functioning spring.
¶ Step 5: Check for wear on the PTFE tube inside the AMS.
Please refer to this wiki to disassemble AMS and check if the PTFE tube inside AMS is worn.
¶ Step 6: Check for any damage to the support of the rollers.
If any damage is found, please get in touch with the Bambu Lab after-sales support team for replacement.
¶ Step 7: Check if the PTFE tube between the AMS and the printer is excessively bent.
Excessive bending of the PTFE tube between the AMS and the printer can cause additional resistance during filament feeding and retraction. Please refer to the diagram below to check for any bends.
¶ Step 8: After following the above 7 steps the error message still persists.
If you have followed the above 7 steps and the issue continues to occur, please get in touch with our after-sales team for assistance.
¶ Related error codes:
HMS_0700-6000-0002-0001: The AMS1 slot1 is overloaded. The filament may be tangled or the spool may be stuck.
HMS_0700-6100-0002-0001: The AMS1 slot2 is overloaded. The filament may be tangled or the spool may be stuck.
HMS_0700-6200-0002-0001: The AMS1 slot3 is overloaded. The filament may be tangled or the spool may be stuck.
HMS_0700-6300-0002-0001: The AMS1 slot4 is overloaded. The filament may be tangled or the spool may be stuck.
HMS_0701-6000-0002-0001: The AMS2 slot1 is overloaded. The filament may be tangled or the spool may be stuck.
HMS_0701-6100-0002-0001: The AMS2 slot2 is overloaded. The filament may be tangled or the spool may be stuck.
HMS_0701-6200-0002-0001: The AMS2 slot3 is overloaded. The filament may be tangled or the spool may be stuck.
HMS_0701-6300-0002-0001: The AMS2 slot4 is overloaded. The filament may be tangled or the spool may be stuck.
HMS_0702-6000-0002-0001: The AMS3 slot1 is overloaded. The filament may be tangled or the spool may be stuck.
HMS_0702-6100-0002-0001: The AMS3 slot2 is overloaded. The filament may be tangled or the spool may be stuck.
HMS_0702-6200-0002-0001: The AMS3 slot3 is overloaded. The filament may be tangled or the spool may be stuck.
HMS_0702-6300-0002-0001: The AMS3 slot4 is overloaded. The filament may be tangled or the spool may be stuck.
HMS_0703-6000-0002-0001: The AMS4 slot1 is overloaded. The filament may be tangled or the spool may be stuck.
HMS_0703-6100-0002-0001: The AMS4 slot2 is overloaded. The filament may be tangled or the spool may be stuck.
HMS_0703-6200-0002-0001: The AMS4 slot3 is overloaded. The filament may be tangled or the spool may be stuck.
HMS_0703-6300-0002-0001: The AMS4 slot4 is overloaded. The filament may be tangled or the spool may be stuck.
¶ End Notes
We hope the detailed guide provided has been helpful and informative.
To ensure a safe and effective execution, if you have any concerns or questions about the process described in this article, we recommend submitting a Technical ticket regarding your issue. Please include a picture or video illustrating the problem, as well as any additional information related to your inquiry.