Inspect the solenoid wiring for short circuits (burned wires).
: Disconnect other heavy industrial machinery running on the same electrical circuit line.
Check your wall outlet with a multimeter for stable voltage. Motor Blocked / Lock Stitch Thread jam in the hook or mechanical freeze. Clear thread bird-nests from the rotary hook assembly. E05 Foot Pedal Signal Error Loose or disconnected foot pedal actuator cable. Unplug and firmly re-seat the pedal connector cable. E07 Encoder / Synchronizer Error Dust on the photo-sensor or misaligned pin.
Securely re-insert the motor connector. Check for external noise interfering with the signal. Signal noise or frequency interference.
Inspect the feed limit sensor wiring and connection. 3. ERR15 - Motor Type Failure siruba l818fm1 error list work
The main shaft is jammed. Check for thread bunches in the hook or a bent needle. Encoder Signal Error
Increase the deceleration time if the machine stops too rapidly. Crucial: Turn off the power immediately.
: Industrial machines require frequent needle changes; always ensure the needle is pushed up as far as it can go in the clamp. How to fix a jammed Industrial Sewing Machine
: Check oil levels daily. Ensure the oil is above the "L" line on the gauge. Change the oil after the first month and every four months thereafter. Secure Connections Inspect the solenoid wiring for short circuits (burned
If the thread trimmer is stuck, clean it and check if it has failed. Regular Maintenance to Prevent Errors
: Check the sight glass on the front face of the oil pan. Low lubrication increases mechanical friction, raising the motor's operating temperature and triggering overcurrent warnings.
: Communication error between the control box and the motor. Solid Features of the L818 Series
: The connecting data cable is loose, frayed, or unplugged. How to fix : Power down the machine completely. Motor Blocked / Lock Stitch Thread jam in
Try rotating the machine handwheel toward you by hand. If it feels tight or frozen, check the needle bar alignment.
1. Turn off the system power supply.2. Ensure the machine head is fully seated down in its table cutout oil pan.3. Inspect the physical safety limit switch plunger on the back right table corner.4. If depressed properly but still failing, test the switch wiring for continuity or physical damage. Mechanical Troubleshooting: Working Beyond the Codes
Typically due to poor-quality thread, incorrect tension, or burrs on the needle. Rethread both the upper thread and bobbin carefully through all guides. "Bird's Nesting":