¶ Issue Description
After initiating a print task, the right extruder nozzle contacts the heatbed, and the extrusion force signal is used to check whether the right nozzle (hotend) is installed.
When the device detects that the right hotend is not installed or is improperly installed, an alarm is triggered, and the print task is stopped.
Possible causes include:
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The hotend is not installed or is improperly installed.
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An unsupported third-party hotend (including the Bambu Lab A1/A1 mini hotend) is installed.
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The extrusion force sensor (right) is installed incorrectly.
¶ Troubleshooting
¶ Tools, Equipment and Materials
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H2.0 Allen key
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H1.5 Allen key
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Flat-head tweezers
¶ Solutions
Users may adjust the order of these solutions as needed.
¶ Step 1. Check the Installation Status of the Right Hotend
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If the hotend is not installed, reinstall it.
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If the hotend is installed, ensure the hotend nozzle is flush with the hotend heater and the locking clip is securely fastened to ensure the hotend is not loose.
Tips: How to properly install the hotend?
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During installation, ensure the protrusion on the hotend is embedded into the slot on the hotend heater base.
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When correctly embedded, a strong adhesive force should be felt, and the hotend should not wobble.
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Secure the locking clip. Observe that the clip is roughly parallel to the vertical direction of the hotend.
1 - Slot on the hotend heater base
2 - Protrusion on the hotend
1 - Slot on the hotend heater base
2 - Clip parallel to the vertical direction of the hotend
¶ Step 2. If a hotend not compatible with the H2D printer is used, replace it and retry
Check if a third-party hotend (including the Bambu Lab A1/A1 mini hotend) is installed. If so, replace it with a hotend compatible with the H2D printer.
¶ Step 3. Check the installation of the right extrusion force sensor
Refer to Steps 1–4 in the Wiki H2D extruder unit disassembly and assemblyto remove the hotend and dual extruder filament guide, and check if the right extrusion force sensor is loose.
If loose, reinstall it.
If the coil in the sensor is detached or damaged, refer to Steps 1–13 in the Wiki Disassemble the H2D toolhead to replace the right extrusion force sensor.
After completing the above troubleshooting steps, restart the print task.
If the above solutions do not resolve the issue, submit a ticket and upload the printer’s log files.
¶ End Notes
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.
If you have any suggestions or feedback on this Wiki, please leave a message in the comment area. Thank you for your support and attention!