I had the same problem with my old 200E, but haven't had any problems with my new 830 LE. I think I'd take it to the dealer and get them to fix it.

i think it is a bug/mistake in the sewing machine software! i have B580 and it has the same problem when i have still half bobbin to go, it shout that i need to change the bobing. well, may be to write to bernina to fix this bug it will hlep. cheers

thanks so much

I was having the same problem, always with the top thread. Finally when I was up at my dealers she gave me a little secret. Since my thread was not broken, and since it always seemed to happen when I increased from a snails pace she said just to go on my menu and make the thread sensor "sleep". It's done through the middle setting on the screen. I will of course have them check my overly sensitive sensor when I take the machine in but for now it works. I just keep good eye on my machine when embroidering so I don't ruin something. But have not had any problems since.......... Just a thought.

thanks everyone

Make certain that when threading that first guide at the spool the thread really gets up in there.
If this continues to happen bring the machine into the spa and make sure to have them check the sensors.

I had similar problems and ultimately had to have a sensor replaced...fixed now and no further trouble.
Mine's an 820.

I have a Bernina 830 le

What machine do you have?

Thanks I've tried your suggestions but it still happens really don't know what else to do, thanks for your speedy reply

It can be that you are sewing too fast for the thread and it jumps away from the sensor and gives a false reading, try slowing down.

Also I would do the usual checks for lint, change thread, needle, rethread etc.,

I had the warning problem that drove me crazy for months and my machine went back for a couple of times. In the end I worked out it was caused by me forgetting on a number of occasions to put the thread guide up and the thread overtensions and snaps and I think this upsets the sensor somehow. Now I am so careful to never do that and it's been fine for months. I am madly looking for some wood to touch now.

This my thread I was given good advice [url]forum/domestic-sewing-machines/5556-top-thread-broken-warning-pfaff-help[/url]

I have to keep threading my machine it says the thread is broken, its not. Doing embroidery when the thread travels to and begins to embroider it tell me the thread is broken, I pull the thread from the needle but can feel the thread coming from the bobbin sometimes it catches the thread from the bobbin most of the time it doesn't and the it tells me that the top thread is broken, help!!!!!! Teresa