Bags Where can I order authentic UltraLux 2000 canister bags and filters? Thanks.

Several possible problems can cause it not to run. The cord reel often gets lint in side and fails to conduct. Carbon brushes in the motor could have worn out. One of the interlocks that keeps it from working with the bag out can be broken. You need to take this to a local vac shop.

It takes the "C" (canister) bags made by Home Solutions for Aerus Electrolux vacuum cleaners.

You can get all attachments and products at your local Aerus Electrolux store. You can also order for home delivery by a representative.or shipping.
Locate your nearest store by following the instructions at the below site.

http://www.aerushome.com/storelocator/

Dismantling the vacuum probably won't help much, and reassembling can be a bear.
To check the intake, remove bag and look into bottom of bag well. It there's a filter there, remove it and check intake at bottom of bag well. Clear if there is.
The afterfilter on a canister is located beneath the air diffuser grid on the top of the machine where the tools can be attached. Remove this cover and there should be a white filter. Yours is probably black, or at least real dirty, if it's never been changed. This also blocks the airflow, reducing suction, and potentially damaging the motor. Extremely dirty filters are an indicator of how much dust is getting into and through the motor. This is usually caused by using generic bags rather than the genuine Electrolux, now Aerus, bags.
It is also an indicator of another internal problem on some other Aerus and pre-Aerus Electrolux vacuums.

The bags are not reusable, you will cause damege to the machine if you reuse bags.

A cheaper alternative is generic bags http://evacuumstore.com/c-3-canister-bags.aspx?ManufacturerFilterID=0

If you use Electrolux bags, they have a built in filter. I don't know of any aftermarket filters.

Try dialing the control valve to the mid way position. If the unit still shuts down with the bag full light on you have a damaged control valve under the dial on the top of the vac.
This valve failure is common in this model and can only be repaired by someone with original AERUS Electrolux repair parts, generally at an AERUS repair shop.

At the back of the vac on top you will have a removable grille. Release the thumb tab to lift the grill.Older models had this tab at the back of the grille. The filters will sit underneath. They should clip into the round exhaust opening. Then replace the grille. Change filters every 6 bags. More often if you have pets or allergies.

make sure you have bags or you need to check if the motor or anything is clogged or needs fixing

The filter for your Electrolux 2100 is located on the rear top of the machine. It is covered by a plastic grill. You simply place your finger in the rear of the plastic grill, push the tab in slightly and lift the grill up to expose the filter. The filter is approximately 4" by 6". It is NOT washable. Most Vac Shops sell replacement filters in addition to them being available at the local Electrolux distributor.