: A bent or broken needle can cause mechanical resistance. Replace the needle if you suspect it is causing jams.
For advanced technical parameters, you can refer to the official Siruba DL720 Series Electronic Manual which shares many control system commonalities with the L818F series. If the control box itself is faulty, it may require replacement by a certified technician. siruba+l818fm1+error+list+2021
The machine head is tilted back or the safety switch is not in the correct position. : A bent or broken needle can cause mechanical resistance
: Turn off the machine, unplug it from the wall, wait 30 seconds, and restart it to clear temporary glitches. If the control box itself is faulty, it
If you encounter an error not listed above or if the code persists after the initial check, follow these general maintenance steps:
Sewing Machine Error Code Guide | PDF | Power Supply - Scribd