Siruba+l818fm1+error+list+2021 Jun 2026
: If this persists, lengthen the deceleration time via the parameter settings. E3: Encoder Signal Error
If you are seeing a or if the machine is making a specific noise , let me know so I can provide a more tailored fix. If you can tell me: The exact error code (e.g., E102, E5) When it happens (immediately at start, or while sewing) I can give you more specific advice on what to check. Sewing Machine Error Code List | PDF - Scribd
If you see or E-005 persistently after re-seating cables, call an authorized Siruba service center. Attempting to replace the main PCB without static protection can permanently damage the machine.
: Check oil levels daily. Refill if it falls below the "L" line on the gauge.
: The motor is physically locked, or the motor connector is not properly inserted. siruba+l818fm1+error+list+2021
By systematically isolating whether an error is electrical (voltage, cable seating) or mechanical (thread nests, binding parts), operators and technicians can quickly resolve faults on the Siruba L818F-M1 and restore production flow.
Check the detector connector insertion and signal integrity. Solenoid Failure Solenoid wiring is short-circuited or coil is defective. Replace the solenoid or repair the wiring. E11 Fuse Failure The fuse for the +12V power supply is broken. Inspect and replace the internal fuse. 🔍 General Troubleshooting Steps
The supply voltage drops below the minimum operational threshold required by the servo controller. Action Steps:
Turn the machine off, wait 30 seconds, and turn it back on. If the error continues, you may need to reset the control box parameters, which should only be done by a trained technician. 2021 Maintenance Tips for Siruba L818F : If this persists, lengthen the deceleration time
Check the hook assembly, bobbin case, and needle bar for jammed thread nests or broken needle fragments.
| Error Code | Display Message | Probable Cause | Recommended Solution | |------------|----------------|----------------|----------------------| | | Motor Overload | Servo motor current exceeds 150% of rated value; fabric jamming under presser foot. | Remove fabric jam. Reset the machine. Check for thread entanglement in the hook area. | | E-005 | Encoder Signal Loss | Loose connection between motor encoder and main PCB (Printed Circuit Board). | Inspect encoder cable (CN7 connector). Re-seat the connector. Replace encoder if damaged. | | E-007 | Needle Up/Down Position Error | Needle positioning sensor (magnetic or photoelectric) is dirty or misaligned after 2021 firmware update. | Clean sensor area with compressed air. Run the “Needle Position Auto-Tuning” from the hidden service menu (Press and hold P + S for 5 sec). | | E-010 | Communication Error (Panel to CPU) | Loose ribbon cable between control panel and main control box. Common after vibration. | Turn off power. Remove and reattach the flat ribbon cable. Check for bent pins. | | E-012 | Low Voltage (Under-voltage) | AC input voltage drops below 180V. Brownout condition. | Use a voltage stabilizer. Check wall outlet (should be 200-240V). Do not share circuit with heavy machinery. | | E-015 | Over-voltage | AC input exceeds 260V or regenerative voltage from motor braking is too high. | Install a line reactor or surge protector. Check for faulty brake resistor (40-50 ohms). | | E-018 | Thread Trimmer Solenoid Jam | Solenoid for automatic thread trimmer fails to retract within 0.3 seconds. | Lubricate trimmer mechanism with silicone oil. Check solenoid coil resistance (should be 25-30 ohms). | | E-021 | Presser Foot Lift Solenoid Error | Presser foot lifter solenoid stuck or open circuit. | Manually lift presser foot to check mechanical binding. Test solenoid voltage (24VDC). Replace solenoid. | | E-030 | Digital Tension Motor Limit Error (2021 specific) | The tension control stepper motor over-rotated or hit a physical stop due to thread dust buildup. | Clean thread tension disks. Run “Tension Calibration” from panel: Parameter P-65->1, then confirm. | | E-033 | Main PCB Overheat | Internal temperature of control box exceeds 85°C (185°F). | Clean ventilation fan filter. Move machine away from heat source (steam iron stations). Allow 30 min cool down. | | E-040 | Synchronizer Signal Fault | Timing belt between upper shaft and synchronizer has slipped or broken. | Remove top cover. Check synchronizer belt tension. Replace belt (Part# SIR-818-BT). | | E-045 | Safety Switch Activated | Looper cover or front safety door is open while machine is running. | Close all safety covers. Check magnetic reed switch continuity. Bypass only for testing. | | E-050 | EEPROM Data Corruption | Factory settings lost due to electrical spike or firmware glitch. | Reset to factory defaults: Power off, then press and hold “RESET” + “S” while turning on. Re-enter all P-values. | | E-099 | General System Fault | Multiple conflicting errors. Often a dying main capacitor on the power board. | Call certified Siruba technician. Replace main filter capacitor (450V, 220µF). |
The external synchronizer attached to the handwheel is misaligned, faulty, or disconnected. The system cannot determine if the needle is in the fully up or fully down position. Resolution:
Check if the motor encoder connector is securely inserted. High inertia may require lengthening the deceleration time. Machine / Motor Locked Sewing Machine Error Code List | PDF -
| Code | Description (Original Text) | Recommended Action (Paraphrased) | | :--- | :--- | :--- | | 700 | 电源电压异常上升 | Turn off power and check the input voltage. | | 701 | 缝纫机主马达驱动电压异常上升 | Turn off power and check the voltage. | | 705 | 电源电压异常下降 | Turn off power and check the input voltage. | | 710 | 缝纫主马达检出异常电流 | Turn off power and check for mechanical abnormalities. | | 711 | 脉冲电机检出异常电流 | Turn off power and check the presser foot/button clamp operation. | | 720 | 机头无法下降 | — | | 721 | 机头无法上升 | — |
Install a dedicated voltage stabilizer if your facility experiences frequent power fluctuations. E02 / Err-02: Undervoltage Protection
If the handwheel turns smoothly but the error persists, inspect the motor wiring harness for short circuits. E04 / Err-04: Needle Positioner / Synchronizer Error