Tray full light comes on- how do you reset it

Hair dryer. Remove both tray inserts and dry thoroughly, paying special attention to the sensor area in the center of the upper tray.

There is a shampooer head with shampooer brushroll, water tank, small hose that hooks to the tank, collection tray

Need to use the Kirby shampoo. It goes down as wet suds but you pick up the suds with the vacuum when it drys. Fill tank adding 1 cap full of soap (kirby soap only) per level on the side, this attaches on the side where the bag is attached

After using the shampooer you need to reattach the vacuum bag and main brushroll nozzle as though you were just vacuuming up dirt.

Instructions:

Lift the front of your kirby up (front part with light) open the handle on the dail in the front (if epquipt), remove the power head, put on height adjustment on highest level, turn dial on front of power head until you see 2 red arrows facing each other, unlock by turning knob, power head should come right off, get shampooer out the power head for shampooer with collection tray, make sure dial is set red on red, put on front of Kirby and lock in, turn dial to green on green arrows, fill tank adding 1 cap full of soap (Kirby soap only) per level on the side, this attaches on the side where the bag is attached, line up arrow and notch and turn, to hook up hose put Kirby down to lowest level, notched end of hose hooks in on tray other end on the tank,on/off switch refers to the foam, Turn machine on to lay the foam & scrub carpet, take shampooer back off to extract the foam once it's dry.

Good luck.

The button I think you are talking about is the bag switch. It is located in the bottom right corner where you put the bag. If the bag does not cover it, the machine will not run.
Also, when the machine cuts off when the bag is full, you have to push the power switch off and back on to reset the full bag switch located in the switch control housing inside the machine.

The light is separate from motor. No reset switch. Check for a fuse but i suspect it may be brushes are worn out and not making contact.Sometimes that starts as an intermittent.
Hopefully one of the coils isn't open circuited.

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.

Either there is something wrong with your switch. Which it doesnt sound like it. Take it to your dealer or call another one it sounds like the control valve needs to be replaced. I am a dealer 1-866-966-9350.

THE RENAISSANCE IS KNOWN FOR HAVING PROBLEMS WITH THE CIRCUIT BOARD IN THE HANDLE.YOU'LL NOTICE THAT MODELS THAT CAME AFTER THAT HAD SLIDING SWITCHES. UNFORTUNATELY THE NEW HOSE DESIGN WON'T WORK ON YOUR MACHINE BECAUSE THE CIRCUIT BOARD INSIDE THE MACHINE WAS CHANGED TOO.AERUS MAY OR MAY NOT STILL MAKE THE PARTS YOU NEED. OTHER WISE LOOK ON E-BAY FOR A NEW HOSE.
ELECTROLUX FOOLISHLY REPLACED IT'S FLAGSHIP STEEL MACHINE WITH THIS DESIGN...A FEW YEARS LATER ALL THEY HAD WORTH SELLING WAS THEIR NAME, HENCE THE NEW NAME AERUS.

There is no reset button on the 2100. If it shuts down, the indicator lights will tell you why. If it has been overheated, there is a self-resetting switch which will shut the motor down and the light will come on to indicate that particular problem. When you turn the machine off and then back on, it should re-start provided you have given the motor ample time to cool down. This will not solve the problem as to why it overheated in the first place. There are also lights and auto-switches that will control full bag and no bag. The machine will not run with no bag and a full bag will cause it to run for a few seconds and shut off.