What happened?
The printer is showing the message "Check the print head thermistor wiring for possible damage."
Error name: Hotend mintemp error
Error code: #26208 (MK4S) #13208 (MK4) # 27208 (MK3.9S) #21208 (MK3.9) #31208 (CORE One)
This error is shown when the printer's nozzle temperature drops below 5 ºC at any point during the print . If this happens during a print, the print will be stopped.
How to fix it?
Extruder inspection
This error is usually caused by the hotend thermistor.
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.
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xBuddy board inspection
Make sure that the Loveboard main cable is correctly connected to the xBuddy board.
11 comments
Environment is not responsible, since room is at 20C.
During pre-heating, I observe an increase of the temperature of nozzle and plate; heating of the nozzle stalls at 175 C. Error is triggered.
During a purge filament process, I observe nozzle T of 215 C. No error triggered.
Heaters are clearly working; temperature indications are both present.
After a few resets, the temperature indication of the nozzle is 0C; points to the hotend thermal sensor.
Disconnected hotend thermistor from the love board and measure its resistance: 50 to 60 Mega Ohms.
What causes the wiring or the thermistor to break ?
Anyone nail down the exact issue? All wires are in good shape, connection all seem fine, haven't broken out the multimeter yet, but thats next on the list.
I can't say if this is definitive proof of the issue, however it's highly unlikely that it's an issue with the heating element and that's the only other component related to this that may be malfunctioning.
EDIT to add: the temperature of the printer's surroundings isn't a factor, as the printer's in a climate controlled area.