If the code persists after a clean restart, the motor encoder assembly may require replacement. Mechanical and Resistance Failures
Electronic errors usually flash on the control panel display. Error Code Likely Cause / Solution Over Voltage Power voltage is too high. E2 / ERR20 Low Voltage
The printed on your control box (e.g., Ho Hsing, Qixing) siruba+l818fm1+error+list+2021
The is a high-speed, direct-drive, four-thread overlock sewing machine widely used in industrial garment manufacturing. Known for its energy efficiency and low noise, it is a staple in many production floors. However, like any sophisticated electromechanical device, it is prone to specific error codes—especially models manufactured or updated in 2021.
E5: Communication ErrorThere is a break in communication between the control panel and the main motor controller.Solution: Inspect the cables connecting the head to the control box for any signs of wear, pinching, or disconnection. If the code persists after a clean restart,
The thread trimmer motor is blocked or the cutter is locked.
Check line voltage; lengthen deceleration parameters if inertia is too high. Low-voltage Protection E2 / ERR20 Low Voltage The printed on your control box (e
An electrical fault detected in the automatic thread trimmer solenoid, thread wiper solenoid, or presser foot lifter solenoid. Action Steps:
: Open the bobbin case and remove any thread "bird nests" or debris that could be causing high torque.
The machine does not know where the needle is positioned.
is a high-speed, single-needle lockstitch machine renowned for its precision in handling thin to medium-thick fabrics. However, even the most reliable industrial equipment can encounter technical interruptions. Understanding the 2021-era error codes and troubleshooting protocols is essential for maintaining production efficiency and machine longevity. Understanding Core System Errors