--- # Error codes list for the MMU for the Original Prusa i3 and Buddy FW # GitHub repo https://github.com/prusa3d/Prusa-Error-Codes # Printer code # MMU 04xxx # Error categories # MECHANICAL xx1xx # Mechanical failures - FINDA, FSENSOR not triggering # TEMPERATURE xx2xx # Temperature measurement of TMC drivers # ELECTRICAL xx3xx # Electrical - TMC non-temperature-related errors # CONNECTIVITY xx4xx # Connectivity - UART/RS485 connectivity # SYSTEM xx5xx # System - internal MMU errors # BOOTLOADER xx6xx # Bootloader related issues # WARNINGS xx7xx # Category-less warnings # # for TMC-related errors the decimal digit specifies the TMC/motor in question: # 0 - pulley # 1 - selector # 2 - idler Errors: # MECHANICAL - code: "04101" title: "FINDA DIDNT TRIGGER" text: "FINDA didn't trigger while loading the filament. Ensure the filament can move and FINDA works." action: [Retry] id: "FINDA_DIDNT_TRIGGER" approved: true type: WARNING gui_layout: "mmu_dialog" - code: "04102" title: "FINDA FILAM. STUCK" text: "FINDA didn't switch off while unloading filament. Try unloading manually. Ensure filament can move and FINDA works." action: [Retry] id: "FINDA_FILAMENT_STUCK" approved: true type: WARNING gui_layout: "mmu_dialog" - code: "04103" title: "FSENSOR DIDNT TRIGG." text: "Filament sensor didn't trigger while loading the filament. Ensure the sensor is calibrated and the filament reached it." action: [Retry] id: "FSENSOR_DIDNT_TRIGGER" approved: true type: WARNING gui_layout: "mmu_dialog" - code: "04104" title: "FSENSOR FIL. STUCK" text: "Filament sensor didn't switch off while unloading filament. Ensure filament can move and the sensor works." action: [Retry] id: "FSENSOR_FILAMENT_STUCK" approved: true type: WARNING gui_layout: "mmu_dialog" - code: "04105" title: "PULLEY CANNOT MOVE" text: "Pulley motor stalled. Ensure the pulley can move and check the wiring." action: [Retry] id: "PULLEY_CANNOT_MOVE" approved: true type: WARNING gui_layout: "mmu_dialog" - code: "04106" title: "FSENSOR TOO EARLY" text: "Filament sensor triggered too early while loading to extruder. Check there isn't anything stuck in PTFE tube. Check that sensor reads properly." action: [Retry] id: "FSENSOR_TOO_EARLY" approved: true type: WARNING gui_layout: "mmu_dialog" - code: "04107" title: "INSPECT FINDA" text: "Selector can't move due to FINDA detecting a filament. Make sure no filament is in Selector and FINDA works properly." action: [Retry] id: "INSPECT_FINDA" approved: true type: WARNING gui_layout: "mmu_dialog" - code: "04108" title: "LOAD TO EXTR. FAILED" text: "Loading to extruder failed. Inspect the filament tip shape. Refine the sensor calibration, if needed." action: [Continue] id: "LOAD_TO_EXTRUDER_FAILED" approved: true type: WARNING gui_layout: "mmu_dialog" - code: "04115" title: "SELECTOR CANNOT HOME" text: "The Selector cannot home properly. Check for anything blocking its movement." action: [Retry] id: "SELECTOR_CANNOT_HOME" approved: true type: WARNING gui_layout: "mmu_dialog" - code: "04116" title: "SELECTOR CANNOT MOVE" text: "The Selector cannot move. Check for anything blocking its movement. Check if the wiring is correct." action: [Retry] id: "SELECTOR_CANNOT_MOVE" approved: true type: WARNING gui_layout: "mmu_dialog" - code: "04125" title: "IDLER CANNOT HOME" text: "The Idler cannot home properly. Check for anything blocking its movement." action: [Retry] id: "IDLER_CANNOT_HOME" approved: true type: WARNING gui_layout: "mmu_dialog" - code: "04126" title: "IDLER CANNOT MOVE" text: "The Idler cannot move properly. Check for anything blocking its movement. Check if the wiring is correct." action: [Retry] id: "IDLER_CANNOT_MOVE" approved: true type: WARNING gui_layout: "mmu_dialog" # TEMPERATURE xx2xx # Temperature measurement - code: "04201" title: "WARNING TMC TOO HOT" text: "TMC driver for the Pulley motor is almost overheating. Make sure there is sufficient airflow near the MMU board." text_short: "More details online." action: [Continue,ResetMMU] id: "WARNING_TMC_PULLEY_TOO_HOT" approved: true type: ERROR gui_layout: "mmu_dialog" - code: "04211" title: "WARNING TMC TOO HOT" text: "TMC driver for the Selector motor is almost overheating. Make sure there is sufficient airflow near the MMU board." text_short: "More details online." action: [Continue,ResetMMU] id: "WARNING_TMC_SELECTOR_TOO_HOT" approved: true type: ERROR gui_layout: "mmu_dialog" - code: "04221" title: "WARNING TMC TOO HOT" text: "TMC driver for the Idler motor is almost overheating. Make sure there is sufficient airflow near the MMU board." text_short: "More details online." action: [Continue,ResetMMU] id: "WARNING_TMC_IDLER_TOO_HOT" approved: true type: ERROR gui_layout: "mmu_dialog" - code: "04202" title: "TMC OVERHEAT ERROR" text: "TMC driver for the Pulley motor is overheated. Cool down the MMU board and reset MMU." text_short: "More details online." action: [ResetMMU] id: "TMC_PULLEY_OVERHEAT_ERROR" approved: true type: ERROR gui_layout: "mmu_dialog" - code: "04212" title: "TMC OVERHEAT ERROR" text: "TMC driver for the Selector motor is overheated. Cool down the MMU board and reset MMU." text_short: "More details online." action: [ResetMMU] id: "TMC_SELECTOR_OVERHEAT_ERROR" approved: true type: ERROR gui_layout: "mmu_dialog" - code: "04222" title: "TMC OVERHEAT ERROR" text: "TMC driver for the Idler motor is overheated. Cool down the MMU board and reset MMU." text_short: "More details online." action: [ResetMMU] id: "TMC_IDLER_OVERHEAT_ERROR" approved: true type: ERROR gui_layout: "mmu_dialog" # ELECTRICAL xx3xx - code: "04301" title: "TMC DRIVER ERROR" text: "TMC driver for the Pulley motor is not responding. Try resetting the MMU. If the issue persists contact support." text_short: "More details online." action: [ResetMMU] id: "TMC_PULLEY_DRIVER_ERROR" approved: true type: ERROR gui_layout: "mmu_dialog" - code: "04311" title: "TMC DRIVER ERROR" text: "TMC driver for the Selector motor is not responding. Try resetting the MMU. If the issue persists contact support." text_short: "More details online." action: [ResetMMU] id: "TMC_SELECTOR_DRIVER_ERROR" approved: true type: ERROR gui_layout: "mmu_dialog" - code: "04321" title: "TMC DRIVER ERROR" text: "TMC driver for the Idler motor is not responding. Try resetting the MMU. If the issue persists contact support." text_short: "More details online." action: [ResetMMU] id: "TMC_IDLER_DRIVER_ERROR" approved: true type: ERROR gui_layout: "mmu_dialog" - code: "04302" title: "TMC DRIVER RESET" text: "TMC driver for the Pulley motor was restarted. There is probably an issue with the electronics. Check the wiring and connectors." text_short: "More details online." action: [ResetMMU] id: "TMC_PULLEY_DRIVER_RESET" approved: true type: ERROR gui_layout: "mmu_dialog" - code: "04312" title: "TMC DRIVER RESET" text: "TMC driver for the Selector motor was restarted. There is probably an issue with the electronics. Check the wiring and connectors." text_short: "More details online." action: [ResetMMU] id: "TMC_SELECTOR_DRIVER_RESET" approved: true type: ERROR gui_layout: "mmu_dialog" - code: "04322" title: "TMC DRIVER RESET" text: "TMC driver for the Idler motor was restarted. There is probably an issue with the electronics. Check the wiring and connectors." text_short: "More details online." action: [ResetMMU] id: "TMC_IDLER_DRIVER_RESET" approved: true type: ERROR gui_layout: "mmu_dialog" - code: "04303" title: "TMC UNDERVOLTAGE ERR" text: "Not enough current for the Pulley TMC driver. There is probably an issue with the electronics. Check the wiring and connectors." text_short: "More details online." action: [ResetMMU] id: "TMC_PULLEY_UNDERVOLTAGE_ERROR" approved: true type: ERROR gui_layout: "mmu_dialog" - code: "04313" title: "TMC UNDERVOLTAGE ERR" text: "Not enough current for the Selector TMC driver. There is probably an issue with the electronics. Check the wiring and connectors." text_short: "More details online." action: [ResetMMU] id: "TMC_SELECTOR_UNDERVOLTAGE_ERROR" approved: true type: ERROR gui_layout: "mmu_dialog" - code: "04323" title: "TMC UNDERVOLTAGE ERR" text: "Not enough current for the Idler TMC driver. There is probably an issue with the electronics. Check the wiring and connectors." text_short: "More details online." action: [ResetMMU] id: "TMC_IDLER_UNDERVOLTAGE_ERROR" approved: true type: ERROR gui_layout: "mmu_dialog" - code: "04304" title: "TMC DRIVER SHORTED" text: "Short circuit on the Pulley TMC driver. Check the wiring and connectors. If the issue persists contact support." text_short: "More details online." action: [ResetMMU] id: "TMC_PULLEY_DRIVER_SHORTED" approved: true type: ERROR gui_layout: "mmu_dialog" - code: "04314" title: "TMC DRIVER SHORTED" text: "Short circuit on the Selector TMC driver. Check the wiring and connectors. If the issue persists contact support." text_short: "More details online." action: [ResetMMU] id: "TMC_SELECTOR_DRIVER_SHORTED" approved: true type: ERROR gui_layout: "mmu_dialog" - code: "04324" title: "TMC DRIVER SHORTED" text: "Short circuit on the Idler TMC driver. Check the wiring and connectors. If the issue persists contact support." text_short: "More details online." action: [ResetMMU] id: "TMC_IDLER_DRIVER_SHORTED" approved: true type: ERROR gui_layout: "mmu_dialog" - code: "04305" title: "MMU SELFTEST FAILED" text: "MMU selftest failed on the Pulley TMC driver. Check the wiring and connectors. If the issue persists contact support." text_short: "More details online." action: [ResetMMU] id: "MMU_PULLEY_SELFTEST_FAILED" approved: true type: ERROR gui_layout: "mmu_dialog" - code: "04315" title: "MMU SELFTEST FAILED" text: "MMU selftest failed on the Selector TMC driver. Check the wiring and connectors. If the issue persists contact support." text_short: "More details online." action: [ResetMMU] id: "MMU_SELECTOR_SELFTEST_FAILED" approved: true type: ERROR gui_layout: "mmu_dialog" - code: "04325" title: "MMU SELFTEST FAILED" text: "MMU selftest failed on the Idler TMC driver. Check the wiring and connectors. If the issue persists contact support." text_short: "More details online." action: [ResetMMU] id: "MMU_IDLER_SELFTEST_FAILED" approved: true type: ERROR gui_layout: "mmu_dialog" - code: "04306" title: "MMU MCU ERROR" text: "MMU detected a power-related issue. Check the wiring and connectors. If the issue persists, contact support." text_short: "More details online." action: [ResetMMU] id: "MCU_POWER_ERROR" approved: true type: ERROR gui_layout: "mmu_dialog" - code: "04307" title: "MMU MCU UNDERPOWER" text: "MMU MCU detected a 5V undervoltage. There might be an issue with the electronics. Check the wiring and connectors" text_short: "More details online." action: [ResetMMU] id: "MCU_UNDERVOLTAGE_VCC" approved: true type: ERROR gui_layout: "mmu_dialog" # CONNECTIVITY - code: "04401" title: "MMU NOT RESPONDING" text: "MMU not responding. Check the wiring and connectors." action: [ResetMMU,DisableMMU] id: "MMU_NOT_RESPONDING" approved: true type: ERROR gui_layout: "mmu_dialog" - code: "04402" title: "COMMUNICATION ERROR" text: "MMU not responding correctly. Check the wiring and connectors." action: [ResetMMU,DisableMMU] id: "COMMUNICATION_ERROR" approved: true type: ERROR gui_layout: "mmu_dialog" # SYSTEM - code: "04501" title: "FIL. ALREADY LOADED" text: "Cannot perform the action, filament is already loaded. Unload it first." action: [Unload,Continue] id: "FILAMENT_ALREADY_LOADED" approved: true type: WARNING gui_layout: "mmu_dialog" - code: "04502" title: "INVALID TOOL" text: "Requested filament tool is not available on this hardware. Check the G-code for tool index out of range (T0-T4)." action: [StopPrint,ResetMMU] id: "INVALID_TOOL" approved: true type: ERROR gui_layout: "mmu_dialog" - code: "04503" title: "QUEUE FULL" text: "MMU Firmware internal error, please reset the MMU." action: [ResetMMU] id: "QUEUE_FULL" approved: true type: ERROR gui_layout: "mmu_dialog" - code: "04504" title: "MMU FW UPDATE NEEDED" text: "The MMU firmware version is incompatible with the printer's FW. Update to compatible version." text_short: "MMU FW version is incompatible with printer FW.Update to version 3.0.1." action: [ResetMMU,DisableMMU] id: "FW_UPDATE_NEEDED" approved: true type: USER_ACTION gui_layout: "mmu_dialog" - code: "04505" title: "FW RUNTIME ERROR" text: "Internal runtime error. Try resetting the MMU or updating the firmware." action: [ResetMMU] id: "FW_RUNTIME_ERROR" approved: true type: ERROR gui_layout: "mmu_dialog" - code: "04506" title: "UNLOAD MANUALLY" text: "Filament detected unexpectedly. Ensure no filament is loaded. Check the sensors and wiring." action: [Retry] id: "UNLOAD_MANUALLY" approved: true type: USER_ACTION gui_layout: "mmu_dialog" - code: "04507" title: "FILAMENT EJECTED" text: "Remove the ejected filament from the front of the MMU.\n\nTip: Filament is automatically ejected when the end of the spool is reached." text_short: "Remove the ejected filament from the front of the MMU." action: [Continue] id: "FILAMENT_EJECTED" approved: true type: USER_ACTION gui_layout: "mmu_dialog" - code: "04900" title: "UNKNOWN ERROR" text: "Unexpected error occurred." action: [ResetMMU] id: "UNKNOWN_ERROR" approved: false type: ERROR gui_layout: "mmu_dialog"