4 sourced reports, with what to check before you buy. Each one links to the page it was reported on.
Costly or dangerous
LeviQ 3.0 auto-leveling damaged the print bed and produced wildly inconsistent first-layer height
Owner thread (lesimprimantes3d.fr) reporting that two leveling runs physically damaged the print bed on both faces, and that the measured first-layer height oscillated between 0.34 and 0.4 mm instead of the set 0.2 mm. This is a physical-damage and accuracy complaint about the auto-leveling system, not a tuning tip.
What to check. Before buying, expect that the auto-leveling may not hold a consistent first layer and that a leveling run can gouge the bed. Budget for a replacement PEI bed plate and verify first-layer height after every leveling.
Extruder blockages during multi-color prints and with TPU filament
Same owner thread reports recurring blockages during multi-color filament changes and persistent jams in the extruder when printing TPU, requiring disassembly to clear.
What to check. If you print multi-color or flexible TPU, expect periodic extruder/hub jams that need manual clearing. The owner found the stock nozzle needed replacing (bimetallic) and still saw multi-color blockages.
Official error code 10000 'Unknown error' with firmware/connection troubleshooting
Anycubic's official wiki documents a generic '10000 Unknown error' state whose troubleshooting spans firmware updates, the ACE Pro signal cable, mainboard connections, and printhead board connections. This is the manufacturer's own admission of a catch-all error state tied to firmware and board connections.
What to check. A generic 'Unknown error' (10000) is a documented failure state that may require firmware updates and re-plugging mainboard/printhead connections. Expect to do board-level troubleshooting if it appears.
Recurring filament clogging error 11518 after first color change
German owner forum thread: the printer repeatedly threw the filament-clogging error right after the first color change. Cleaning the ACE Pro and the extruder did not clear it; the thread points to checking the hotend. This matches Anycubic's official 11518 'Filament clogging detected' error page.
What to check. Error 11518 (filament clogging) is a documented, recurring failure that can persist after cleaning the ACE Pro and extruder, sometimes requiring hotend inspection. If you print multi-color, expect this error and budget time for clearing jams.
These reports come from the pages linked under each item: owner forums, repair guides and workshops. They are not a diagnosis of any one unit, and a careful check of the one you are buying still applies.
Text from the Kriko 3D printers catalog, version 0.1.1, under the CC-BY-SA-4.0 license.
