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                  3. Support
                  5. Original Prusa MK3.9S
                  7. QR Error codes
                  9. Heatbreak MAXTEMP Error #31212 (CORE One) #35212 (CORE One L) #26212 (MK4S) #13212 (MK4) #27212 (MK3.9S) #21212 (MK3.9) 
                   

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                  Heatbreak MAXTEMP Error

                  #31212 (CORE One) #35212 (CORE One L) #26212 (MK4S) #13212 (MK4) #27212 (MK3.9S) #21212 (MK3.9) 

                  Relevant for

                  MK4
                  MK3.9
                  MK4S
                  MK3.9S
                  CORE One family
                  2 comments
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                  What happened?

                  The printer is showing the message "Check the heatbreak thermistor wiring for possible damage."

                  Error name: Heatbreak MAXTEMP Error

                  Error code: #31212 (CORE One) #35212 (CORE One L) #26212 (MK4S) #13212 (MK4) #27212 (MK3.9S) #21212 (MK3.9) 

                  The error is shown when the heatbreak thermistor measures over 100 ºC at any point.

                  How to fix it? 

                  Access the LoveBoard. Check if the thermistor is connected correctly and if there is no damage along the cable length.

                  If you have a multimeter, it is possible to check the resistance of the cables to verify if they are damaged. For that, use our Multimeter usage guide.

                  Was this article helpful?
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                  2 comments

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                  N A
                  •
                  Looking at the pics above, the one in the blue square gets the thermistor cable WITHOUT a sticker on it (the Heatbreak thermistor).

                  The one to the left of the blue square gets the one with the sticker on it that has "HTC something" (mine is already closed up and back in action, so the "something" could be thermistor or hotend, or whatever). The point is it has "HTC" on it and a QR code.

                  After upgrading my Core One+ to v2 last night, I had them in backwards, and got error 31212.

                  Shutting down, swapping them back, and powering up cured the problem.
                  Reply
                  Mac-N4MCC
                  •
                  Show the thermister so we know which one it is please
                  Reply

                  Topics

                  • Troubleshooting
                    • QR Error codes
                      • QR Error codes
                      • Bed preheat error #31201 (CORE One) #35201 (CORE One L) #36201 (CORE One INDX) #26201 (MK4S) #13201 (MK4) #27201 (MK3.9S) #21201 (MK3.9) #28201 (MK3.5S) #23201 (MK3.5) 
                      • Hotend preheat error #31202 (CORE One) #35202 (CORE One L) #26202 (MK4S) #13202 (MK4) #27202 (MK3.9S) #21202 (MK3.9) 
                      • Bed thermal runaway #31203 (CORE One) #35203 (CORE One L) #36203 (CORE One INDX) #26203 (MK4S) #13203 (MK4) #27203 (MK3.9S) #21203 (MK3.9) #28203 (MK3.5S) #23203 (MK3.5) 
                      • Hotend thermal runaway #31204 (CORE One) #35204 (CORE One L) #26204 (MK4S) #13204 (MK4) #27204 (MK3.9S) #21204 (MK3.9)
                      • Signature verification failed #31606 (CORE One) #35606 (CORE One L) #36606 (CORE One INDX) #26606 (MK4S) #13606 (MK4) #27606 (MK3.9S) #21606 (MK3.9) #28606 (MK3.5S) #23606 (MK3.5)
                      • No FW in internal flash #31612 (CORE One) #35612 (CORE One L) #36612 (CORE One INDX) #26612 (MK4S)  #13612 (MK4) #27612 (MK3.9S) #21612 (MK3.9) #28612 (MK3.5S) #23612 (MK3.5) #20612
                      • File system error #31613 (CORE One) #35613 (CORE One L) #36613 (CORE One INDX) #26613 (MK4S) #13613 (MK4) #27613 (MK3.9S) #21613 (MK3.9) #28613 (MK3.5S) #23613 (MK3.5)
                      • Unsupported BBF version #31614 (CORE One) #35614 (CORE One L) #36614 (CORE One INDX) #26614 (MK4S) #13614 (MK4) #27614 (MK3.9S) #21614 (MK3.9) #28614 (MK3.5S) #23614 (MK3.5)
                      • Flash erase error #31605 (CORE One) #35605 (CORE One L) #36605 (CORE One INDX) #26605 (MK4S) #13605 (MK4) #27605 (MK3.9S) #21605 (MK3.9) #28605 (MK3.5S) #23605 (MK3.5) #17605 (XL) #12605 (MINI)
                      • Hotend mintemp error #31208 (CORE One) #35208 (CORE One L) #26208 (MK4S) #13208 (MK4) #27208 (MK3.9S) #21208 (MK3.9)
                      • Hotend maxtemp error #31206 (CORE One) #35206 (CORE One L) #26206 (MK4S) #13206 (MK4) #27206 (MK3.9S) #21206 (MK3.9) #28206 (MK3.5S) #23206 (MK3.5)
                      • Bed mintemp error #31207 (CORE One) #35207 (CORE One L) #36207 (CORE One INDX) #26207 (MK4S) #13207 (MK4) #27207 (MK3.9S) #21207 (MK3.9) #28207 (MK3.5S) #23207 (MK3.5)
                      • Bed maxtemp error #31205 (CORE One) #35205 (CORE One L) #36205 (CORE One INDX) #26205 (MK4S) #13205 (MK4) #27201 (MK3.9S) #21201 (MK3.9) #28201 (MK3.5S) #23201 (MK3.5)
                      • Homing error Y #31305 (CORE One) #35305 (CORE One L) #36305 (CORE One INDX) #17305 (XL)
                      • Nozzle Heater Overcurrent #31308 (CORE One) #35308 (CORE One L) #36308 (CORE One INDX) #26308 (MK4S) #13308 (MK4) #27308 (MK3.9S) #21308 (MK3.9)
                      • Heatbed Port Overcurrent #31309 (CORE One) #35309 (CORE One L) #26309 (MK4S) #13309 (MK4) #27309 (MK3.9S) #21309 (MK3.9) #28309 (MK3.5S) #23309 (MK3.5) #12309 (MINI) #36309 (INDX)
                      • MMU Overcurrent #31310 (CORE One) #35310 (CORE One L) #26310 (MK4S) #13310 (MK4) #27310 (MK3.9S) #21310 (MK3.9) #28310 (MK3.5S) #23310 (MK3.5)
                      • Loadcell Not Calibrated #31523 (CORE One) #35223 (CORE One L) #26523 (MK4S) #13523 (MK4) #27523 (MK3.9S) #21523 (MK3.9)
                      • Loadcell Tare Error #31524 (CORE One) #35524 (CORE One L) #26524 (MK4S) #13524 (MK4) #27524 (MK3.9S) #21524 (MK3.9)
                      • Loadcell Tare Failed #31525 (CORE One) #35525 (CORE One L) #26525 (MK4S) #13525 (MK4) #27525 (MK3.9S) #21525 (MK3.9)
                      • Loadcell Measure Failed #31526 (CORE One) #35526 (CORE One L) #36526 (CORE One INDX) #26526 (MK4S) #13526 (MK4) #27526 (MK3.9S) #21526 (MK3.9) #36526 (CORE One INDX)
                      • Loadcell Bad Configuration #31527 (CORE One) #35527 (CORE One L) #36527 (CORE One INDX) #26527 (MK4S) #13527 (MK4) #27527 (MK3.9S) #21527 (MK3.9)
                      • Loadcell Timeout #31528 (CORE One) #35528 (CORE One L) #26528 (MK4S) #36528 (CORE One INDX) #13528 (MK4) #27528 (MK3.9S) #21528 (MK3.9)
                      • Marlin Request Timeout #31530 (CORE One) #35530 (CORE One L) #36530 (CORE One INDX) #26530 (MK4S) #13530 (MK4) #27530 (MK3.9S) #21530 (MK3.9) #28530 (MK3.5S) #23530 (MK3.5)
                      • BBF Allocation Failed #31531 (CORE One) #35531 (CORE One L) #36531 (CORE One INDX) #26531 (MK4S) #13531 (MK4) #27531 (MK3.9S) #21531 (MK3.9) #28531 (MK3.5S) #23531 (MK3.5)
                      • BBF Initialization Failed #31532 (CORE One) #35532 (CORE One L) #36532 (CORE One INDX) #26532 (MK4S) #13532 (MK4) #27532 (MK3.9S) #21532 (MK3.9) #28532 (MK3.5S) #23532 (MK3.5)
                      • ESP Error #31504 (CORE One) #35504 (CORE One L) #26504 (MK4S) #13504 (MK4) #27504 (MK3.9S) #21504 (MK3.9) #28504 (MK3.5S) #23504 (MK3.5) 
                      • ESP Error #31505 (CORE One) #35505 (CORE One L) #26505 (MK4S) #13505 (MK4) #27505 (MK3.9S) #21505 (MK3.9) #28505 (MK3.5S) #23505 (MK3.5)
                      • ESP Error #31506 (CORE One) #35506 (CORE One L) #26506 (MK4S) #13506 (MK4) #27506 (MK3.9S) #21506 (MK3.9) #28506 (MK3.5S) #23506 (MK3.5)
                      • Heatbreak MINTEMP Error #31211 (CORE One) #35211 (CORE One L) #26211 (MK4S) #13211 (MK4) #27211 (MK3.9S) #21211 (MK3.9)
                      • Heatbreak MAXTEMP Error #31212 (CORE One) #35212 (CORE One L) #26212 (MK4S) #13212 (MK4) #27212 (MK3.9S) #21212 (MK3.9) 
                      • Homing error Y #26305 (MK4S) #13305 (MK4) #21305 (MK3.9) #23305 (MK3.5)
                      • Power Panic #36321 (INDX) #31321 (CORE One) #35321 (CORE One L) #26321 (MK4S) #13321 (MK4) #27321 (MK3.9S) #21321 (MK3.9) #28321 (MK3.5S) #23321 (MK3.5) 
                      • MCU Maxtemp Error #31213 (CORE One) #35213 (CORE One L) #26213 (MK4S) #13213 (MK4) #27213 (MK3.9S) #21213 (MK3.9) #17213 (XL) #12213 (MINI/+)
                      • Firmware Update Required #31701 (CORE One) #35701 (CORE One L) #36701 (CORE One INDX) #26701 (MK4S) #13701 (MK4) #27701 (MK3.9S) #21701 (MK3.9) #28701 (MK3.5S) #23701 (MK3.5)
                      • Connect Registration Failed
                      • Connect Registration Failed #21401 (MK3.9)
                      • Nozzle Cleaning Failed #31834 (CORE One) #35834 (CORE One L) #26834 (MK4S) #13834 (MK4) #27834 (MK3.9S) #21834 (MK3.9) #17834 (XL)
                      • Stuck filament detection #31101 (CORE One) #35101 (CORE One L) #26101 (MK4S) #13101 (MK4) #27101 (MK3.9S) #21101 (MK3.9) #17108 (XL)
                      • Heatbed temp not matching #31209 (CORE One) #35209 (CORE One L) #26209 (MK4S) #13209 (MK4) #27209 (MK3.9S) #21209 (MK3.9) #28209 (MK3.5S) #23209 (MK3.5)
                      • Steel sheet not detected #31109 (CORE One) #35109 (CORE One L) #36109 (CORE One INDX)
                      • Heaters Timeout #31817 (CORE One) #35817 (CORE One L) #36817 (CORE One INDX) #26817 (MK4S) #13817 (MK4) #27817 (MK3.9S) #21817 (MK3.9) #28817 (MK3.5S) #23817 (MK3.5) #17817 (XL) #12817 (MINI)
                      • Homing error X #31304 (CORE One) #35304 (CORE One L) #36304 (CORE One INDX) #17304 (XL)
                      • Puppy error #31514 (CORE One) #35514 (CORE One L) #36514 (CORE One INDX)
                      • Fil. sensor troubleshooting #31114 (CORE One) #26114 (MK4S) #13114 (MK4) #27114 (MK3.9S) #21114 (MK3.9) #28114 (MK3.5S) #23114 (MK3.5)
                      • Accelerometer communication failed #31323 (CORE One) #35323 (CORE One L) #26323 (MK4S) #13323 (MK4) #27323 (MK3.9S) #21323 (MK3.9) #28323 (MK3.5S) #23323 (MK3.5)
                      • ESP not connected #31533 (CORE One) #35533 (CORE One L) #26533 (MK4S) #13533 (MK4) #27533 (MK3.9S) #21533 (MK3.9) #28533 (MK3.5S) #23533 (MK3.5)
                      • Unknown file system #31703 (CORE One) #35703 (CORE One L) #36703 (CORE One INDX) #26703 (MK4S) #13703 (MK4) #27703 (MK3.9S) #21703 (MK3.9) 
                      • MCU in Buddy is overheated #31825 (CORE One) #35825 (CORE One L) #26825 (MK4S) #27825 (MK3.9S) #28825 (MK3.5S) #13825 (MK4) #21825 (MK3.9) #23825 (MK3.5) #17825 (XL) #12825 (MINI)
                      • Print fan error #31816 (CORE One) #26816 (MK4S) #27816 (MK3.9S) #13816 (MK4) #21816 (MK3.9) #17816 (XL)
                      • Crash recovery axis long #31809 (CORE One) #35809 (CORE One L) #26809 (MK4S) #13809 (MK4) #27809 (MK3.9S) #21809 (MK3.9) #28809 (MK3.5S) #23809 (MK3.5) #17809 (XL) #12809 (MINI)
                      • Crash recovery repeated crash #31811 (CORE One) #35811 (CORE One L) #26811 (MK4S) #13811 (MK4) #27811 (MK3.9S) #21811 (MK3.9) #28811 (MK3.5S) #23811 (MK3.5) #17811 (XL) #12811 (MINI)
                      • Crash recovery axis short #31810 (CORE One) #35810 (CORE One L) #26810 (MK4S) #13810 (MK4) #27810 (MK3.9S) #21810 (MK3.9) #28810 (MK3.5S) #23810 (MK3.5) #17810 (XL) #12810 (MINI)
                      • Hotend fan error #31828 (CORE One) #35828 (CORE One L) #26828 (MK4S) #27828 (MK3.9S) #13828 (MK4) #21828 (MK3.9) #17828 (XL)
                      • Chamber filtration fan is not spinning #31840 (CORE One) #35840 (CORE One L) #36840 (CORE One INDX)
                      • USB flash disk error #31821 (CORE One) #35821 (CORE One L) #26821 (MK4S) #13821 (MK4) #27821 (MK3.9S) #21821 (MK3.9) #28821 (MK3.5S) #23821 (MK3.5) #17821 (XL) #12821 (MINI)
                      • Hotend temp discrepancy #31818 (CORE One) #17818 (XL) #26818 (MK4S) #13818 (MK4) #27818 (MK3.9S) #21818 (MK3.9) #28818 (MK3.5S) #23818 (MK3.5) #12818 (MINI)
                      • Steppers timeout #31820 (CORE One) #35820 (CORE One L) #17820 (XL) #26820 (MK4S) #13820 (MK4) #27820 (MK3.9S) #21820 (MK3.9) #28820 (MK3.5S) #23820 (MK3.5) #12820 (MINI)
                      • Heatbreak thermistor fail #31822 (CORE One) #35822 (CORE One L) #17822 (XL) #26822 (MK4S) #13822 (MK4) #27822 (MK3.9S) #21822 (MK3.9)
                      • Quick pause #31835 (CORE One) #35835 (CORE One L) #36835 (CORE One INDX) #17835 (XL) #26835 (MK4S) #13835 (MK4) #27835 (MK3.9S) #21835 (MK3.9) #28835 (MK3.5S) #23835 (MK3.5) #12835 (MINI)
                      • Not downloaded #31824 (CORE One) #35824 (CORE One L) #17824 (XL) #26824 (MK4S) #13824 (MK4) #27824 (MK3.9S) #21824 (MK3.9) #28824 (MK3.5S) #23824 (MK3.5) #12824 (MINI)
                      • Filament runout #31829 (CORE One) #35829 (CORE One L) #17829 (XL) #26829 (MK4S) #13829 (MK4) #27829 (MK3.9S) #21829 (MK3.9) #28829 (MK3.5S) #23829 (MK3.5) #12829 (MINI)
                      • Probing failed #31833 (CORE One) #35833 (CORE One L) #36833 (CORE One INDX) #17833 (XL) #26833 (MK4S) #13833 (MK4) #27833 (MK3.9S) #21833 (MK3.9) #28833 (MK3.5S) #23833 (MK3.5) #12833 (MINI)
                      • Loading timeout #31836 (CORE One) #35836 (CORE One L) #17836 (XL) #26836 (MK4S) #13836 (MK4) #27836 (MK3.9S) #21836 (MK3.9) #28836 (MK3.5S) #23836 (MK3.5) #12836 (MINI)
                      • Selftest not passed #31537 (CORE One) #35537 (CORE One L) #36537 (CORE One INDX) #17537 (XL) #26537 (MK4S) #13537 (MK4) #27537 (MK3.9S) #21537 (MK3.9) #28537 (MK3.5S) #23537 (MK3.5) #12537 (MINI)
                      • Enclosure filter expiration warning #31831 (CORE One) #35831 (CORE One L) #36831 (CORE One INDX) #17831 (XL)
                      • Enclosure filter expiration #31832 (CORE One) #35832 (CORE One L) #36832 (CORE One INDX) #17832 (XL)
                      • Chamber Cooling Fan Error #31839 (CORE One) #35839 (CORE One L) #36839 (CORE One INDX)
                      • Chamber overheating #36260 (INDX) #31260 (CORE One) #35260 (CORE One L) #17260 (XL)
                      • Chamber temperature is critical #36261 (INDX) #31261 (CORE One L) #35261 (CORE One) #17261 (XL)
                      • Hotend burn risk #31140 (CORE One) #35140 (CORE One L)
                      • 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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