The soldering iron only worked for about 15 minutes. I switched the heating repeatedly after about 5 seconds with time gaps of about 10 to 30 seconds, but after 15 minutes of use the soldering iron stopped working. The battery is fully charged. After pressing the button for heating, it is written on the display

The soldering iron only worked for about 15 minutes. I switched the heating repeatedly after about 5 seconds with time gaps of about 10 to 30 seconds, but after 15 minutes of use the soldering iron stopped working. The battery is fully charged. After pressing the button for heating, it is written on the display "CHECK ATOMIZER". Apparently, the problem is in the welding heat body, see the picture. 3 spare solder tip nozzle are included, but it is not included spare welding heat body. Where I can buy spare welding heat body for this soldering iron?

The soldering iron only worked for about 15 minutes. I switched the heating repeatedly after about 5 seconds with time gaps of about 10 to 30 seconds, but after 15 minutes of use the soldering iron stopped working. The battery is fully charged. After pressing the button for heating, it is written on the display