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                  1. Support
                  2. Original Prusa MK3.9S
                  3. Printer maintenance
                  4. Maintenance warning #31117 (CORE One) #26117 (MK4S) #13117 (MK4) #27117 (MK3.9S) #21117 (MK3.9) #28117 (MK3.5S) #23117 (MK3.5)
                   

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                  Maintenance warning

                  #31117 (CORE One) #26117 (MK4S) #13117 (MK4) #27117 (MK3.9S) #21117 (MK3.9) #28117 (MK3.5S) #23117 (MK3.5)

                  Relevant for

                  CORE One family
                  MK4 family
                  MMU family
                  MK3.5 family
                  MK3.9 family
                  3 comments
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                  What happened? 

                  The Prusa CORE One/+, and the Original Prusa MK4/S, MK3.9/S, MK3.5/S can be equipped with an MMU3 upgrade kit. Having the MMU3 upgrade kit installed significantly increases the number of loads and unloads. 

                  After a set number of loads and unloads, the printer shows the message "Maintenance Reminder. Filament changes have reached main-plate lifespan/have reached 30k. Inspect the part and ensure you have a spare plate available". 

                  Error name: Maintenace warning

                  Error code: #31117 (CORE One) #26117 (MK4S) #13117 (MK4) #27117 (MK3.9S) #21117 (MK3.9) #28117 (MK3.5S) #23117 (MK3.5)

                  How to fix it? 

                  Follow the MMU3 regular maintenance guidelines, in particular the steps related to the Nextruder main plate. 

                  Was this article helpful?
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                  2 comments

                  Log in  to post a comment
                  Samael
                  •
                  It would be helpful to include a reference to the main plate, what it looks like, where it is in the assembly manual, and a link to buy a new one or to the STL file.
                  Reply
                  tnxgam3rx
                  •
                  The link to this page leads to an Admin page saying "You are not authorized", can we get that updated to the correct guide? I believe the link should be https://help.prusa3d.com/article/mmu3-regular-maintenance_682693#extruder-parts but I may be wrong.
                  Reply
                  Alessandro Pantaleo
                  •
                  Hi! Thanks for the catch, and sorry for the late response. The link is now fixed. :)
                  Reply

                  Topics

                  • Using the printer
                    • Printer maintenance
                      • How to replace chamber thermistor (CORE One/+)
                      • How to replace the main cable (CORE One/+)
                      • How to rebuild the Nextruder Hotend
                      • How to install HT Hotend Upgrade (CORE One/+, CORE One L/+)
                      • How to replace a hotend heatsink (MK4S / MK3.9S)
                      • Changing or replacing the Prusa Nozzle
                      • Installing or changing the Nextruder V6 Nozzle Adapter
                      • Changing or replacing the nozzle (MK2.5/S, MK3/S/+, MK3.5/S)
                      • How to update firmware (CORE One L, CORE One, CORE One INDX, MK4/S, MK3.9/S, MK3.5/S, XL)
                      • SD cards and USB drives
                      • Adjusting belt tension (MK4/S, MK3.9/S, MK3.5/S, MK3/S/+)
                      • Removing filament from extruder manually
                      • Checking/re-aligning the Bondtech gear (MK3.5/S, MK3S/+, MK2.5S)
                      • How to install the Nextruder V6 Nozzle Adapter (CORE One)
                      • How to replace Heatbed (CORE One)
                      • How to replace Heatbed Thermistor (CORE One)
                      • Buddy3D Camera for CORE One Installation
                      • Filament Guide addon (MK4S/MK4)
                      • How to install the Nextruder V6 Nozzle Adapter (MK4/MK3.9)
                      • Regular printer maintenance (MK4/S, MK3.9/S)
                      • How to replace the Prusa Nozzle (MK4/MK3.9)
                      • How to use Prusament Refill 900g
                      • How to replace Loveboard (MK4S/MK4/MK3.9S/MK3.9)
                      • How to replace the silver PSU with the black PSU
                      • How to replace Z motors (CORE One)
                      • How to replace a hotend heater (MK4/MK3.9)
                      • How to replace a hotend thermistor (MK4/MK3.9)
                      • How to replace a hotend fan (MK4 / MK3.9)
                      • How to replace the xBuddy board (MK4/MK3.9/MK3.5)
                      • How to replace a print fan (MK4 / MK3.9)
                      • How to replace a hotend assembly (MK4 / MK3.9)
                      • How to replace a Heatbed Thermistor (MK4/S, MK3.9/S, MK3.5/S)
                      • MMU3 regular maintenance
                      • Print surface preparation
                      • How to replace a hotend heatsink (MK4 / MK3.9)
                      • How to replace xLCD (MK4/MK3.9/MK3.5)
                      • How to update firmware (MMU3)
                      • How to downgrade firmware (CORE One/+, MK4/S, MK3.9/S, MK3.5/S, XL)
                      • Regular printer maintenance (MK3.5/S)
                      • How to replace the Prusa Nozzle (MK4S/MK3.9S)
                      • How to use accelerometer (MK3.5/S)
                      • How to replace a hotend assembly (MK4S / MK3.9S)
                      • Changing or replacing the Nextruder Hotend
                      • How to install the Nextruder V6 Nozzle Adapter (MK4S/MK3.9S)
                      • How to replace the Prusa Nozzle (CORE One)
                      • How to reverse the door orientation (CORE One)
                      • How to pack the Prusa CORE One for return - Original Packing material
                      • Regular printer maintenance (CORE One/+)
                      • Maintenance warning #31117 (CORE One) #26117 (MK4S) #13117 (MK4) #27117 (MK3.9S) #21117 (MK3.9) #28117 (MK3.5S) #23117 (MK3.5)
                      • Maintenance failure warning #28116 (MK3.5S) #23116 (MK3.5)
                      • Maintenance failure warning #31116 (CORE One) #26116 (MK4S) #13116 (MK4) #27116 (MK3.9S) #21116 (MK3.9)
                      • How to install Advanced Filtration (CORE One)
                      • How to pack the Prusa CORE One for return - Custom Packing material
                      • How to replace the xBuddy board (CORE One)
                      • Packing the MK4/S + MMU3 bundle for return - original packaging
                      • How to replace Hotend fan (CORE One)
                      • How to replace Nextruder Filament Sensor (CORE One)
                      • How to replace Heatsink NTC Thermistor (CORE One)
                      • How to replace Hotend Heatsink (CORE One)
                      • How to replace X and Y Motors (CORE One)
                      • How to replace the print fan (CORE One)
                      • How to replace the Heatbed Power Cables (CORE One)
                      • How to replace the Chamber fan (CORE One)
                      • How to replace a Hotend Thermistor (CORE One)
                      • How to replace a Hotend Heater (CORE One)
                      • How to replace the Belt Tensioner Pulley (CORE One)
                      • How to replace the Belt Tensioner Left (CORE One)
                      • How to replace the Belt Tensioner Right (CORE One)
                      • How to replace Loveboard (CORE One)
                      • How to replace a hotend assembly (CORE One)
                      • How to replace a print fan (MK4S / MK3.9S)
                      • Cold pull (MK3/S/+, MK2.5/S, MK3.5/S)
                      • How to replace the door sensor (CORE One)
                      • How to replace the side filament sensor (CORE One)
                      • MK3 Series Hotend Guide
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