Anycubic 3D printer troubleshooting
15 guides to fix Anycubic 3D printers: the symptom, the likely causes, how to check which one is yours and the step-by-step fix, with official sources from Anycubic.
Printers covered: Kobra S1, Photon Mono M7 Pro, Kobra 3, Kobra 3 V2, Kobra 3 Max, Photon Mono M7 Max, Kobra 2, Kobra 2 Max, Kobra 2 Neo, Kobra 2 Plus, Kobra 2 Pro, Photon Mono 4 and 4 more.
Each guide summarises the official documentation and says whether usi3d has already verified it on a machine.
Extrusion (2 guides)
- Kobra 3 or Kobra S1 with ACE Pro: error 11511, 11512 or 11518 (filament will not feed, will not retract or jams)
The Kobra 3 Combo, or the Kobra S1 with the ACE Pro, pauses with code 11511 (on the Kobra 3, «Extrusion abnormal»), 11512 («Retraction abnormal») or 11518 («Filament…
- Kobra S1: little or no filament comes out (hotend clog or error 11518)
On the Kobra S1 the extruder motor turns but little or no filament comes out, the extruder clicks, or the extruded line is thinner than normal and the walls have gaps.
Mechanics (3 guides)
- Kobra 2: auto-leveling fails with a module or abnormal leveling warning
During auto-leveling on the Kobra 2, Kobra 2 Pro or Kobra 2 Max, the printer stops with a warning such as «Leveling is abnormal,please check whether the wiring of the…
- Kobra S1 or Kobra 3: errors 10237 (auto levelling), 10108 (nozzle scraping the bed) or 10130 (Z homing)
The Kobra S1 or Kobra 3 stops with «CODE: 10237 Auto leveling error.
- Kobra S1: noise from the Z axis, the rods or the print head while printing
The Kobra S1 makes noise when the Z axis moves, the print head catches or drags as it moves, there is a rubbing sound at the top while printing, or it is very loud while…
Electronics (4 guides)
- Kobra S1 or Kobra 3: a print head fan does not spin or is noisy (error 11950 on the S1)
On the Kobra S1 or Kobra 3 a print head fan, the part cooling fan (which cools the model) or the hotend fan, does not spin, runs unevenly or is noisy.
- Kobra S1 or Kobra 3: error 10411 (mainboard TMC driver overheating; mainboard fan)
The Kobra S1, Kobra 3 or Kobra 3 V2 stops printing with «CODE: 10411 TMC or extruder overheat.
- Kobra S1 or Kobra 3: errors 10121, 10122, 10123 or 10124 (bed or printhead not heating, or thermistor fault)
The Kobra S1 or Kobra 3 stops with 10121 (hotbed heating abnormal), 10122 (extruder heating abnormal), 10123 (hotbed NTC abnormal) or 10124 (extruder NTC abnormal).
- Photon Mono M7 Pro: the resin vat does not heat the resin or code 307 appears
The Photon Mono M7 Pro reports «Heating abnormality, heating has ended (CODE: 307)» and stops heating the vat, or in a cold room the prints fail because the resin is not…
Connectivity and firmware (1 guide)
- Kobra S1: won't connect to Wi-Fi, the cloud or the app, or the camera shows nothing (11402, 10105)
The Kobra S1 will not connect to Wi-Fi («Network connection failed»), shows code 11402 (network connection timed out) or 10105 (file download failed), the corner of the…
Resin (5 guides)
- Photon Mono M5s: leveling, resin, layer or dropped-print monitoring warnings
The Photon Mono M5s monitors the print with a pressure sensor and stops with a warning: «Leveling monitoring error», «Resin monitoring error», «Layered monitoring error»…
- Photon Mono M7 Pro or M7 Max: warnings about residue in the vat, not enough resin, or model fell off/incomplete
The Photon Mono M7 Pro or M7 Max stops or warns with «Residue detected», that there is not enough resin left in the vat, or «Print abnormality, model fell off the…
- Photon Mono M7 Pro: replacing the ACF film (bumps, cured resin, leaks or code 305)
On the Photon Mono M7 Pro the ACF film of the resin vat has bumps, wrinkles, stains or cured resin on it, it leaks resin, the printer reports «Residue detected, please…
- Photon Mono M7 Pro: the exposure test fails or the LCD does not display the image properly
On the Photon Mono M7 Pro nothing cures or prints come out soft or lacking detail, and in the exposure test the image seen on the LCD does not match the one on the…
- Photon Mono M7 Pro: the print does not stick to the build plate or leveling fails (code 303)
On the Photon Mono M7 Pro the print cures stuck to the ACF film of the resin vat instead of the build plate, only the base sticks, or the printer reports «Leveling…
Products that may help
Products from the usi3d shop that fit these guides, chosen for the fit and not for the commission. Check that they work with your printer before buying.
Symptoms in the Anycubic guides
- The printer shows an error code or message
- The resin print does not stick to the build plate
- The print sticks to the vat film (FEP)
- Clogged nozzle or hotend
- Unlevel or warped bed
- Temperature error (MINTEMP, MAXTEMP, thermal runaway)
- A fan does not spin or is noisy
- Uneven first layer (thin and thick areas)
- The extruder clicks or skips
- No filament comes out
- Too little filament (under-extrusion)
- The multi-material system fails (does not load, cut or jams)
- Noise or rubbing when the axes move
- The hotend or the bed does not heat
- Homing or a sensor fails (endstop, levelling)
- Does not connect to Wi-Fi or the app
- The resin print's supports fail
- The LCD screen or UV light does not light up
- Resin leak or torn film in the vat
- Soft, tacky or blurry resin prints
Other brands
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