My 2140 has the lower feed dog error message

sounds like there not compatable, have you checked with pfaff technical support about the problem,

here's their number
Toll free assistance - 1.877.746.4375

here is a link for their support page


Machine Support

Modern machines do not need much oiling. Perhaps you have over lubricated.

Hi, I hope this helps. If it doesn't post again.
"Check:
Place the sewing foot under the sewing foot
holder so that the pins of the foot snap into
the sewing foot holder when the presser foot
lifter is lowered.
Please check that the sewing foot is properly
engaged by raising the presser foot lifter."

Question: Are you using top feed? If so:
"For all sewing jobs with the top feed, only use sewing feet with Cutout at the back (OA, 1A, 3, 4)."

Embroidery foot Part No.: 98-694-840-00 will not work with top feed.

Also, except for eyelets, the darning foot can be used for embroidery.

I'm not sure what you're trying to do :) darn or embroider :); I'm not sure what mode you're working in either; embroidery mode?

Darning with straight stitch
Program 00
Fit darning foot No. 6.
Set the needle at its highest position by turning
the handwheel, and push the pin of the darning
foot fully into the hole of the sewing foot holder
slightly pressing the darning foot between thumb
and forefinger. When doing this, the guide fork
should place itself around the presser bar and the
wire must be behind the fixing screw.
Darning position:
Lower the presser foot lifter pressing it lightly to
the rear until it snaps into the darning position.
Important Only in this position you have the
optimum thread tension for darning.
• Place the darning work in the darning hoop.
• Lower the feed dog.
• Pull up the bobbin thread and hold the threads
when you start sewing.
• Now guide the fabric back and forth evenly;
the length of the darn will be set by the size of
the hole. As you are determining the stitch
length yourself while sewing with the feed dog
lowered, you should sew at an even speed.
When you have reached the width of the dam
aged area, darn over the damaged area again
from right to left.
This guarantees a durable darn.
TIP: The faster you sew, the easier and more even
the darning will be. It you are moving the workpiece
too slowly, small knots will appear on the
wrong side of the fabric."

Whether working with terry-cloth or woven fabric,
with the help of the darning foot and the pro
gram 02 you can embroider initials of your own
design

Drop the feed dog and insert the darning foot.
Put the machine into the darning position.

Spread the fabric in an embroidery hoop and
embroider in accordance with program 02.

Lower feed dog
If the feed dog is not lowered for embroidering, the
machine does not embroider when the foot pedal
is pressed and the message appea rs:
Lower feed dog
ok?
The feed dog must be lowered in embroidery
mode.

ABSOLUTELY! The XL models of embroidery machines are supposed to automatically lower when you put the embroidery unit on, but I have had an XL-400 and currently have an XL-550 and Quintet, and I have noticed on the latter two that the feed dogs have not always automatically lowered. Incidentally, to lower or raise the feed dogs, the lever (it's in the back) goes DOWN and OVER. If you are having problems getting it move, use a straight blade screwdriver and pop the little tip off--it's not necessary to operating the feed dogs.

Also incidentally, when you raise the feed dogs, you have to turn the hand wheel towards (ALWAYS towards you for anything) several times to get the feed dogs to actually pop up. You'll hear when it does that. They lower right away, though.

when the feed dogs are in the down postion the machine stay in one place
when the feed dogs are in the up positon then the machine will sew
if the machine still doesn't sew when the feed dogs are in the up position the feed dogs need to be checked to see if they need a adjustment or need to be replaced

Try raising and lowering the feed dogs a couple times there may be something in there that's tripping the sensor.

There should be a lever to the right of the needle and down on the front of the machine. You will use the lever to raise or lower the rough metal that grabs the material under the needle.

http://www.pfaff.com/
There is alot of information here, and the folks there know your machine best.

I just looked and there was another question like this asked.

Your machine needs oiling. The feeddogs are stuck. Could be in several places. You would have to remove the back and side covers to get to what needs cleaning and oiling. Especially behind that knob. Just removing the covers is a job so I can't recommend you do this unless your trained. But you can try. Don't forget the screws beneith the machine. But really, there is too much behind the handwheel for a novice to deal with. Maybe see if you can just let some sewing machine oil just run down behind the feedog knob and work it alot.
Good luck.

I have gotten the main motor blocked message several times. When I get this, I always remove thread, both top and bottom. I change the needle too. 75% of the time my problem goes away. If the problem is not solved, I unscrew the casing in the front of the bobbin, and look for anything that might be obstructing the bobbin. While I've had lots of "blocked motor" messages, I've never had to get a tech to ook at it. Sometimes, if you leave it overnight too, the sewing machine fairy will change something and the problem will solve itself in the morning. Re-thread, re-bobbin, re-needle. to start.