Where is vacuum chamber on a Windsor sensor xp12

Please see the link
https://www.youtube.com/watch?v=KIwZPitlLQA

Be sure that you have no clogs in the system and have fresh micro and exhaust filters. If you're having issues with a persistent bag full indicator on a Sensor S12, this is usually caused by a malfunctioning bypass valve. Moisture and even very fine dust (ash, drywall etc) can infiltrate the bypass valve causing it to foul. Replacement is pretty straight forward.
https://hproclean.com/products/86139100-bypass-valve

You most likely will need to change the Yoke assembly. There is a sensor built in that gets clogged with fine debris over time. This will take care of the problem.

Check the line going from the bottom of the vacuum to the bag, it may be clogged. A coat hanger can help you clear any jams, but be careful not to puncture the duct.

Your Sensor most likely has an internal heat sensor that is shutting off the motor. Some vacuums install an external heat sensor with a reset button that you must push to re-start the vacuum. If your model does not have an external reset button it is most likely a sensor inside the motor. If it is defective the motor must be replaced to solve the problem. But first make sure the overheating is not being caused by a blockage somewhere or the bag is too full. Air must pass completely through a vacuum starting at the floor where it picks up the dirt through all the canisters, filters, bags, etc. and then is exhausted from the vacuum. Any restrictions or blockage can cause the motor to over heat.
That Vac Guy

The Windsor Sensor vacs all have a removable handle.

The handle is inserted into a "socket" which has contacts to complete the electrical circuit.

The handle is held in place by a gray plastic lever.

If the lever is not pressed down completely, the handle is able to slide within the socket during regular use.

If the handle slides out far enough, the electrical connection within will be disconnected and the vac will have no power.

Simply lift the lever, pull up to remove the handle, and re-insert the handle fully, then press down firmly on the lever to lock the handle securely in place.

This is the first step to solve your problem and hopefully this is all that need to be done.

If this does not work, please repost here and I will help you all I can.

Note: I am a big fan of the Windsor Sensor vacs and find them to be easy to work on and a great vac all around!

The sensor is a small hole into the vacuum chamber. It moves the alert system as vacuum inside the unit builds up.

The filtration, built into the bag, is getting filled up and creating a higher vacuum inside the unit, giving a false reading. The only ways to eliminate this are to give the bag a shake to clear some of the dirt out of the filter, try to pick up coarser dirt first or buy generic bags-without the filtration.

Are you vacuuming up fine particals like pet dander or just large amounts of regular dust? Also when was the last time you replaced your filters?

Just some sugestions.

It sounds like a blockage in the hose or in the yolk.I believe you can remove the hose from the machine to inspect and clear it.Also check the trapdoor on the bottom of the powerhead to be sure it is clear.While you are going through the machine check under the upright filter next to the bag to see if it is clear.Good Luck-Scott

The problem was a sticking switch that was not being reset. The vacuum on/off switch mechanism is comprised of two switches. One is the main switch that turns the vacuum on and off. The second is a shut off switch that gets tripped when the full bag sensor is engaged. This second switch is supposed to get reset when you push the on/off switch on the outside of the machine. The full bag shutoff switch was stiff and it, therefore, was taking a couple of presses of the on/off switch to move the shutoff switch back into the running position.