Nozzle temperature control mainly includes a heater and a NTC sensor. When the heater is short-circuited, the nozzle cannot heat up, which will cause the hotend to be unable to extrude the filament, and the filament may be jammed in the heatbreak.
Below are the possible reasons that this HMS error occurs:
The nozzle temperature is very high, please avoid touching the nozzle
Take off the front shell,check whether the plastic of the two wires of heater is damaged and contacted.
If the printer is printing, press the "resume" button after completing the check;if not, please restart the machine.
If you have a multimeter available, you can try measuring the resistance of the hotend component and follow the steps below to determine if there is a hotend malfunction.
The resistance of the ceramic heater at room temperature is typically around 12Ω, while the resistance of the NTC is around 50-100 KΩ:
The resistance of the ceramic heater at room temperature is typically around 10Ω (two pins indicated by the red arrows in the image below), while the resistance of the NTC is around 100 KΩ (two pins indicated by the orange arrows ):
Typically, the error message for A1 series printers is 'Nozzle Temperature Malfunction'. To measure the resistance of the heating component, please remove the rear cover of the toolhead. The plug to be measured is the number 1 plug on the TH board.
The resistance of the ceramic heater at room temperature is typically around 7Ω (two pins indicated by the red arrows in the image below), while the resistance of the NTC is around 100 KΩ (two pins indicated by the orange arrows , the resistance of NTC varies widely with temperature fluctuations):
If the message still shows up, contact the after-sales team.
HMS_0300_0200_0001_0001 The nozzle temperature is abnormal, the heater may be short circuit.
" The nozzle temperature is abnormal, the heater may be short circuit. "
0300-0200-0001-0001