There is a tangle detection module above the tool head. When the resistance of the AMS feed is too high, the tangle detection module will be pressed down to trigger the Hall sensor inside the tool head, and the printer will determine that the feed resistance is too high. The comparison between the normal feeding and detected tangle status of the tangle detection module is as follows:
The tangle detection function is not applicable to all types of filament, please refer to this wiki for more details: Introduction to flament tangle monitoring | Bambu Lab Wiki
1. Check the filament on the spool for entanglement. If it gets tangled, manually rearrange the filament, insert it into the AMS slot, and click the “Retry” button.
2. Sometimes the filament may be caught on the edge of the spool and cannot be sent out. Please pull it out and try again.
3. If there is no tangle or sink problem, please check if the PTFE tube of this slot is bent too much or too long, which can also cause excessive resistance in the feeding path. The standard length of the PTFE tube is 580mm for slot 1 and slot 2, and 700mm for slot 3 and 4. The optimal placement of the printer and AMS is shown in the following figure 1. If the printer and AMS are placed far apart, the PTFE tube will be pulled and bent, resulting in high feed resistance, as shown in the following figure 2.
4. Check if there are any residual chips on the extrusion wheel of the corresponding slot of AMS lite. Please clean them and click the retry button.
5. Please confirm whether the filament is inserted into the wrong slot, for example, the filament of slot 1 is inserted into the feeder of slot 2 by mistake, as shown in the following picture:
6. If you cannot solve the problem through the above steps, please submit a support ticket to contact our support team.
2. If you cannot solve the problem through the above steps, please submit a support ticket to contact our support team.