I have an electrolux discovery II vacuum cleaner and the floor function works, but when I try to switch over to carpet mode, it doesn't seem to engage.

SOURCE: fixing my vacuum cleaner

Check to make sure that your agitator still spins. (Agitator = brush). If your agitator still spins, it eliminates your belt and agitator as likely culprits. The last possible solution would be that your vacuum is clogged. The grinding sound might be a motor-related issue or could possibly mean your bearings are going out. Check the bearings of the agitator and the motor of the vacuum.

Accessing to the agitator and belt can be done by removing the bottom cover of your vacuum. There are 2 scews that are holding the bottom cover to the head of the unit. Remove these 2 scews and the bottom cover should snap off.

SOURCE: Electrolux 1572E (Discovery II) How to remove

Remove the handle assembly by taking the big screw out and pull up on the handle. Remove the four screws where the top half connects to the bottom half. Two on the outside back and two on the inside front where the bag goes. You'll need a long phillips #2 screwdriver. Always have the power disconected. Pull up on the bag housing while twisting it side to side.
Good luck after you get in.

SOURCE: Electrolux diagrams and schematics

Sorry, I don't, but you cn look on line or phone book for Aerus Electrolux. But if they will ive you any info, I don't know. Sorry I couldn't help you out.

SOURCE: Kenmore Vacuum 116.36623501 does not stay on bare floor setting

It sounds like there is something wrong with the latching assembly. GO to the Sears Parts website and enter your Model number. Look at the parts assembly for the Nozzle, and the problem will be in one of items 12 through 17.

SOURCE: Bissell carpet cleaner won't spray water on floor setting

I have the same problem, can someone help.

Thanks