Hotend mintemp error #26208 (MK4S) #13208 (MK4) # 27208 (MK…

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.

xBuddy board inspection

Make sure that the Loveboard main cable is correctly connected to the xBuddy board.

10 comments

Patrick Ruster

•

Just upgraded my 4 to a 4S, and I'm hitting this error. It feels like a firmware thing, because when its going through the calibration steps, when it gets to the heater step, instead of running through the checks, the screen shows a bootloader progress bar, and them I'm hit with the QR code screen, indicating hotend mintemp error.

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.

tnxgam3rx

•

I had that same issue with my printer, and my belief is that it's a malfunctioning thermistor. I had disconnected it for some time waiting for a replacement to be shipped, and when I reconnected it to the LoveBoard and installed it the thermistor failed to report a temp (LCD screen reported 0 Celsius on the hotend).

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.

du Preez

•

After upgrading firmware (6.0.3 to 6.1.3) I started getting this error when starting in a cold environment. To work around it I touch with my finger near the thermometers until their temperature is above minimum.

rashlee7

•

I'm regularly experiencing this error in cold environments, usually when trying to load filament from a cold start. I've been able to work around the issue by preheating the machine for the filament I want to load, which warms the thermistor enough that the error doesn't reappear when I load the filament.

rashlee7

•

I also saw this issue when my garage was below 10° C. The issue resolved itself immediately after the space was heated.

Michael

•

I had my mk4s show this error when trying to start a print or even pre-heating the heatbed and nozzle in the enclosure in my garage (currently ~ 4 °C). After immediate reboot same procedure, couldn't get the machine to even start heating. Moving the whole thing into a heated room worked almost instantly, so there is not necessarily a hardware failure involved if the temperature is very low in the first place.