This usually indicates that during printing, the CFS lite odometer does not detect sufficient filament movement. Possible causes include:
The filament is ground at the Extruder Gear, preventing the gear from properly gripping the filament, resulting in slipping or feeding interruption;
Residual filament or debris inside the Hotend increases feeding resistance, preventing stable extrusion;
The spool is improperly installed, has excessive resistance, or gets stuck, causing inconsistent feeding;
The filament type selected in the slicer does not match the actual filament used, leading to mismatched parameters such as flow rate and temperature, affecting extrusion;
Improper printer placement or feeding path causes excessive bending or compression of the PTFE tube, increasing overall feeding resistance.
You can directly refer to: SPARKX i7 Guide for Handling Under-Extrusion and Clogs
Check the printer placement and ensure the PTFE tube is smooth without sharp bends;
Check the spool condition and filament status to ensure the spool rotates freely without obstruction;
Verify that slicer settings, printer settings, and the actual filament used are consistent;
Clean the Extrusion Assembly and Hotend.
For detailed steps, refer to: SPARKX i7 Guide for Handling Under-Extrusion and Clogs