What happened?
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: #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.