Bernina L460 - Troubleshooting Guide; Common Issues and Solutions

38
L 450
L 460
Maintenance
Problem Cause Solution Page
Irregular Stitch  Incorrect thread tension(s).
 Incorrect needle size.
 Incorrectly threaded.
 Fabric has been pulled.
 Loose presser foot.
⦁
Adjust the thread tension(s).
⦁
Choose the correct needle size for
thread and fabric.
⦁
Re-thread the machine.
⦁
Do not pull the fabric; guide it gently.
⦁
Attach the presser foot.
23, 32
18, 19
24ff
22
14
Needle breakage  Needles are bent, blunt or points are
damaged.
 Fabric has been pulled.
 Incorrect needle size.
 Incorrect insertion of the needle.
 Loose presser foot.
 Check the needle system 130/705H.
⦁
Replace the needles.
⦁
Do not pull the fabric; guide it gently.
⦁
Choose the correct needle size for
thread and fabric.
⦁
Insert the needle to highest position.
⦁
Attach the presser foot.
⦁
Use needles of the system 130/705H or
HAx1.
15
22
18, 19
15
14
-
Unwanted pucker-
ing
 Incorrect thread tension(s).
 Bent or blunt needle.
 Differential feed is set incorrectly.
⦁
Adjust the thread tension(s).
⦁
Insert a new needle to highest position.
⦁
Set the differential feed at less than 1.
23, 32
15
22
Unwanted waver-
ing
 Differential feed is set incorrectly.
⦁
Set differential feed at 1-2. 22
Skipped stitches.  Incorrect needle size.
 Incorrectly threaded.
 Bent or blunt needle.
 Incorrect setting of the needle.
⦁
Choose the correct needle size for
thread and fabric.
⦁
Re-thread the machine.
⦁
Insert a new needle to highest position.
⦁
Insert the needle to highest position.
18, 19
24ff
15
15
Breaking threads  Incorrectly threaded.
 Bent needle.
 Thread tension(s) too tight.
 Incorrect setting of the needle.
 Upper thread is tangled.
Retractable thread stand is not fully
extended.
⦁
Re-thread in correct order.
⦁
Insert a new needle to highest position.
⦁
Adjust the thread tension(s).
⦁
Insert a new needle to highest position.
⦁
Check if spool threads are running freely.
⦁
Fully extend the retractable thread stand.
24ff
15
23, 32
15
24ff
10
Doesn't sew  No power supply
 Power and light switch off
 Overheating
 Sicherheitsanzeige leuchtet (L 460)
⦁
Check the power source.
⦁
Turn on the power and light switch.
⦁
Switch off the machine and let it cool
down for 10-15 minutes.
⦁
Close the looper cover and the sewing
table / lower the presser foot
9
12
13
13
Troubleshooting Guide