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UltiMaker S8 Installation and user manual
6.4 Print core troubleshooting
Blocked print core
If you experience extrusion issues or the flow sensor pauses the print despite
the spool not being empty, the print core may be blocked. Degraded material
inside the nozzle can be removed using the hot and cold pull method. To start the
assisted cleaning procedure, go to the Options menu and navigate to Maintenance
→ Print head → Print core cleaning. Follow the on-screen instructions to
complete the process.
Print core not recognized
Print cores are typically recognized automatically. However, if the printer cannot
read the chip information, dirty contact points on the PCB at the back of the
print core may be the cause. Clean the contact points with a cotton swab and
isopropyl alcohol (IPA).
Note: Do not touch the contact points on the back of the print core with
your fingers.
Print core and printer compatibility
The UltiMaker S8 is compatible with the AA+ and CC+ print cores, which are
optimized for high-flow, high-speed printing. Additional print cores can be used on
the S8 for specific applications: BB for PVA (water-soluble support material) and DD
for Ultrafuse® Support Layer material.
Although the regular AA and CC cores can be used on the UltiMaker S8, there are no
profiles to support this configuration in UltiMaker Cura.
Print core and material compatibility
If the printer displays an incompatibility warning, the selected print core is not
supported for the loaded material. To proceed, replace either the print core or the
material with a compatible option.
Note: The CC+ print core is optimized for composite materials. While it can be
used with standard, non-abrasive materials, using PLA in a CC+ print core is
not recommended, as it may cause severe under-extrusion.
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