Errors and Faults
149
2022-08 EN 5020079.40A.04
Fault
Cause
Solution
Upper Thread Breaks
Incorrect needle/thread
combination.
> Match the needle with the thread size.
Upper thread is too tight.
> Reduce the upper thread tension.
Incorrectly threaded.
> Rethread.
Poor quality thread.
> Use quality thread.
The stitch plate or the hook tip is
damaged.
> Contact a specialized bernette dealer to have the
damages repaired.
> Replace the stitch plate.
Lower Thread Breaks
The bobbin is not inserted
correctly.
> Remove and reinsert the bobbin and pull on the thread.
– The thread should run easily.
Bobbin is wound incorrectly.
> Check bobbin and thread correctly.
The stitch hole in the stitch plate
is damaged.
> Contact a specialized bernette dealer to have the
damages repaired.
> Replace the stitch plate.
Needle blunt or bent.
> Replace the needle.
Needle Breaks
The needle is incorrectly inserted.
> Insert the needle with the flat side to the back as far up
as it will go into the needle holder and tighten the
screw.
Fabric has been pulled.
> Feed the fabric evenly.
Thick fabric has been pushed.
> Use the appropriate presser foot, e.g. Jeans foot, for
thick material.
> Use the height compensating tool when sewing over a
thick seam.
Knotted thread.
> Use quality thread.
Display is Inactive
Incorrect calibrating data.
> Switch off the machine.
> Switch on the machine, and simultaneously press and
hold the «Needle Position Right/Left» buttons.
> Recalibrate the display.
The eco Mode is active.
> Tap «eco Mode».
Stitch Width Not Adjustable
The selected needle and stitch
plate cannot be used in
combination.
> Replace the needle.
> Replace the stitch plate.
