With the machine powered off and the bed at room temperature (24°C), use a multimeter to measure the resistance of the bed's "T1" NTC wire. It should be within the range of 100±10KΩ. If not, it indicates an abnormality in the bed's "T1" NTC wire. Please try replacing the bed. Show Troubleshooting method: The above troubleshooting methods did not resolve the issue. We suggest you create an after-sales ticket and our After-sales engineers will help you solve the problem. (Reply time :1 working day) When you are getting the error such as Heating Failed or Thermal Runaway, you might be scratching your head and think why the printer is so poor and not able to finish the print. But reality, the printer is actually protecting you from resulting in fires in some cases, which is called Thermal Runaway Protection. E1 stands for Hotend number 1, which is default hotend number for most of the printer. If you have more than a hotend, you may face E2 or E3 Printer Halted. What is Thermal Runaway Protection?Most modern printers such as Ender 3, Artillery Sidewinder or Anycubic Kobra series, they are equip with newer Marlin firmware which has Thermal Runaway Safety feature. The feature designed to stop the printing process whether it detects the thermal no longer in the safe range. Marlin code sample where it define thermal protection for hotends and bed.Thermal Runaway: E1 Printer Halted during PrintingWhen you received this message during printing, it means the printer unable to maintain the temperature around the configured temperature. In this example we set the temperature at 200C. The main causes could be: https://forum.creality.com/topic/2454/wiring-an-ender-3d-new-board-question
Thermal Runaway: E1 Printer Halted during StartupIn some cases, you might be getting thermal runaway during start of your printer, this means the thermistor already out of the temperature even heating is not here, normally acceptable range is from -15 to 260C. When it’s over 260C even during Start Up, it could means only 2 things, thermistor or motherboard need to be replaced. Heater Cartridge can be ruled out since this does not involve heating. To identify which is the main causes, https://www.th3dstudio.com/wp-content/uploads/2018/11/melziconnections.fw_.jpg
Some motherboard may have multiple thermistor port like SKR 1.4, but most of the time, when you shorted the port, all port will be malfunction together. The only solution is to change the board or even ugprade to a better board such as SKR 2 or SKR 3 which has thermistor short circuit protection. SKR 3 Protective circuit for thermistorhttps://www.youtube.com/watch?v=d0iIGt9BcRwHeating fail usually happens during heating up the nozzle, and also before the printing start. Heating Failed highly related to the heater cartridge because the nozzle unable to reach the expected temperature. To identify the issue, Go the Menu > Temperature and set the temperature to 200C
If you need to video guide, Thomas Sanladerer has a great video on explaining the thermal runaway issue |