Each side of the extruder is equipped with an extrusion force sensor above the hotend, which measures the extrusion force of the corresponding hotend. Additionally, the extrusion force sensor enables functions such as homing, leveling, nozzle Z offset calibration, and dynamic flow calibration, all of which are critical for printing. When the sensitivity of the extrusion force signal measured by the sensor is low, this alarm will be triggered, causing the heatbed to lower slightly, terminate the task, and report an error.
Possible causes of the issue include:
Installation of an unsupported third-party hotend (including Bambu Lab A1/A1 mini hotends).
Improper installation of the hotend.
Deformation of the cooling fins of the hotend (right hotend).
None
Users may adjust the order of these solutions as needed.
Check if a third-party hotend (including Bambu Lab A1/A1 mini hotends) is installed. If so, replace it.
Reassemble the faulty hotend, making sure the nozzle fits the hotend heating assembly and the metal clip has locked the hotend.
After installation, perform the homing operation again to verify if the hotend is properly installed.
Swap the left and right hotends. If the error follows the faulty hotend, the hotend itself is defective.
Inspect the fins at the top of the hotend for any deformation.
If any of the above conditions are observed, it is recommended to replace the hotend.
If the above solutions do not resolve the issue, submit a ticket and upload the printer’s log files.
We hope the detailed guide provided has been helpful and informative.
If this guide does not solve your problem, please submit a technical ticket, will answer your questions and provide assistance.
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