Siruba L818fm1 Error List Work -

Inspect for loose pin connections, frayed wires, or dust accumulation. Securely seat the connector and restart the machine.

Remove the bobbin case and check for jammed thread around the hook.

The motor is drawing too much amperage, often due to high friction or a short circuit.

Most automated models of the Siruba L818 series utilize direct-drive servo motors managed by electronic controllers. The following table lists common codes that appear when the machine encounters structural or electronic resistance: Error Code System Malfunction Primary Cause Immediate Remedial Work Steps Overcurrent Protection High electrical surge; faulty IGBT module; frozen motor. siruba l818fm1 error list work

error list work breakdown provides the specific causes, diagnostic triggers, and immediate repair steps required to clear control system alarms and optimize machine performance.

Periodically check that all plugs leading into the motor control box are firmly inserted.

: Manually turn the handwheel to ensure the machine is not physically jammed. Voltage Check Inspect for loose pin connections, frayed wires, or

| Code | Meaning | Possible Causes & Solutions | | :--- | :--- | :--- | | | Shaft blocked, connection or positioning problem | Primary Cause : Common error indicating a blocked shaft, poor connections, or positioning issues. Solutions : 1) Turn off the power for 30 seconds and restart. 2) Check if the hook is jammed or the belt is slipping. 3) Ensure the motor encoder signals are consistent with the positioning sensor. | | E-001 | IPM over-current / over-voltage | Caused by an overload or short circuit in the motor drive module. Solutions : Turn off the machine and check for a mechanically stuck sewing machine head or a short in the motor windings. | | E-003 | Auxiliary equipment undervoltage (24V) | Indicates a problem with the low-voltage power supply. Solutions : Check the auxiliary power supply module and its connections to the main control board. | | E-004 | EEPROM fault | A memory chip on the control board has corrupted data. Solutions : May require reprogramming or replacement of the control board by a professional. | | E-005 | Motor running abnormality | Primary Cause : Suggests the main motor is not responding correctly to commands. Solutions : Check motor wiring and the encoder for any faults. | | E-007 | Motor locked-rotor error | Primary Cause : The motor has tried to turn but cannot move. Solutions : Turn off the machine and manually rotate the handwheel to check for a mechanical jam. | | ERR-00 / ERR-01 | Input signal self-check error | Primary Cause : The control system detects a fault during its initial power-on check. Solutions : Return the foot pedal to its neutral position and check the pedal's signal cable connection. | | Error 11 | Pause switch pressed | A non-critical alert; the machine is waiting for user input. Solutions : Press the RESET key to clear the error. Move the presser foot if necessary to continue sewing. | | Error 121 | Thread trimming cannot be completed | Indicates a failure in the automated thread cutting sequence. Solutions : Turn off the machine and inspect the fixed and movable knife edges for damage or wear. |

Inspect the feed limit sensor wiring and connection. 3. ERR15 - Motor Type Failure

Inspect the solenoid wiring for short circuits (burned wires). The motor is drawing too much amperage, often

This is the most common operational error code on the production line.

: Never place hands near the needle bar or rotary hook while the control box screen is active.

| Symptom / Error | Probable cause(s) | Immediate checks | Fix / next steps | |---|---:|---|---| | Machine won’t power on | Faulty power, blown fuse, switch, controller issue | Confirm mains power, check power cord, fuse, on/off switch | Replace fuse or cord; test outlet; if power present but no boot, inspect control board or call tech | | Motor hums but no movement | Drive belt slipped/broken, motor coupling, clutch issue | Visual belt inspection, try manual handwheel | Replace/adjust belt, tighten coupling, check motor brushes | | Excessive vibration / noise | Loose screws, worn bearings, timing issue | Check screws, oil points, listen to bearings | Tighten, lubricate, replace bearings, service timing gears | | Stitch skipping / uneven stitches | Needle bent/worn, incorrect needle size/type, timing off | Replace needle, verify needle is correct and installed fully | Fit correct needle, re-time machine, check thread path | | Thread breakage (upper) | Tension too tight, poor threading, burr on needle plate or hook | Re-thread, clean tension discs, inspect needle/plate | Reduce tension, replace damaged parts, clean lint | | Bobbin thread breakage / birdnesting | Incorrect bobbin winding/placement, hook timing, lint | Re-wind bobbin, clean bobbin case, check insertion | Rewind/insert correct, adjust hook timing, clean surrounding area | | Inconsistent stitch length | Feed dog height, presser foot pressure, timing | Check feed dog movement, verify presser foot pressure | Adjust feed dog/presser, service timing system | | Fabric not advancing | Feed dog down, presser foot, clutch/drive problem | Ensure feed dog raised, presser foot down | Raise feed dog, repair drive linkage | | Overheating / motor trips breaker | Motor overload, binding mechanism, electrical short | Remove load, run machine empty, smell for burning | Clean lubrication points, inspect motor wiring, replace motor if needed | | Error code on panel (e.g., E1, E2) | Electronic controller faults, sensor failure, encoder/communication error | Note exact code, power-cycle machine, check connectors | Consult manual for code; reseat connectors; replace sensor or controller as directed | | Servo motor alarm / “ALM” | Encoder mismatch, wiring, overcurrent | Check encoder cable, motor connectors | Replace or repair encoder or motor driver | | Tension dial not responding | Broken tension assembly, internal linkage failed | Try different dial settings, inspect assembly | Replace tension assembly or linkage parts | | Oil leakage | Overfilled oil reservoir, damaged seals | Inspect oil level, locate leak | Replace seals, refill correct oil amount | | Machine stalls intermittently | Intermittent electrical contact, worn clutch, loose wiring | Wiggle wiring, check connectors, observe when stall occurs | Repair wiring, replace clutch/solenoid |