Sensor not aligned keeps saying raise pressor foot

I would say it time to have the computer or sensors of the machine checked

Hmm. Raise the foot with the presser foot lever. You have to raise the foot up to get the fabric under the foot in order to see.

My gut instict is to say that you may have a faulty presser foot position sensor. If this goes bad, even if the presser foot is raised, the machine thinks that it is down, no matter what. There are few other issues that could cause this problem, but they are all tied to faulty electronic components. I would earnestly suggest taking your machine in to a Janome dealer or another reputable sewing machine repair shop.

My gut instict is to say that you may have a faulty presser foot position sensor. If this goes bad, even if the presser foot is raised, the machine thinks that it is down, no matter what. There are few other issues that could cause this problem, but they are all tied to faulty electronic components. I would earnestly suggest taking your machine in to a Janome dealer or another reputable sewing machine repair shop.

Perhaps you accidently moved the switch that enables free hand embroidery? It's up and under next to the pressor foot lever. Slides forward and backward. Forward the pressor foot will go all the way down to the feed dogs. Slid back and it keeps the foot up off the feed dogs but allows the thread tension to work properly. It would be easy to accidently move it when operating the pressor foot raise/lower lever.

Not sure, but am thinking perhaps the tension disk has gunk or threads stuck in it. Try soaking a length of perl cotton in rubbing alcohol, squeeze out the excess. Raise the presser foot and loosen the tension disk as far as possible and gently pull the perl cotton DOWN through the tension disk a few times.

If that doesn't help, then it's possible a spring in the tension mechanism or something in the presser foot lever is malfunctioning.

http://content.janome.com/userfiles/file/Inst%20book_%202212%28En_Sp_Fr%29.pdf

See p. 10 of the manual.

The presser foot lifter is on the right side of the leftmost part of the machine, towards the back of the machine. Press up to raise it.

Did you raise the presser foot and needle?

Not familiar with your machine, but an important suggestion for all sewing machines:

ALWAYS RAISE the presser foot when threading the top thread. If you did not do this, remove the top thread completely from the machine and start over by RAISING the presser foot and following the thread path. (Do NOT miss any thread guides or thread any out of order!)

Lower the presser foot and thread the needle. (The top thread will pull through the needle ONLY if the presser foot is raised!) RAISE the presser foot and pull at least 5 inches of thread through the needle. Insert your fabric. Lower the presser foot. Hold the thread tail gently in your left hand and with the right hand manually turn the handwheel one rotation. The needle should pull the bobbin thread up through the fabric.

While still holding the top thread tail, "sweep" under the presser foot with a stiletto, scissors, a nail file (anything that will fit under the presser foot) to pull the remaining bobbin thread tail above the fabric. Grab both thread tails and pull them under the presser foot toward the back of the machine. Now, you are ready to take your first stitch.

You can gently hold those thread tails while you slowly power the machine to take the first couple of stitches on your fabric.

My moms does the same. One way we got around it was to hold the presser foot all the way up and click the ok button on the screen. The other thing we did would be to hold the presser foot up all the way while turning the machine on while the embroidery unit was already attached. When I say raise the presser foot all the way up, I am talking about raising it up as if you were placing something really large under the foot, not just in the resting up position. Hope this helps - it is very frustrating! My sister has the same exact machine purchased at the same time as my moms, but she doesn't have this problem.