Unplugged while unit was on by mistake and now it will not turn off with switch

Try plug it into a wall outlet that you know is good. If that's not the problem turn the power switch to on, then test the power cord plug for continuity, if none the power is not getting to the unit, could be the switch is bad, or wire broken/disconnected inside unit.

Plugged in:
Try moving the cord around at the strain relief, where cord enters the vac, as internal wires may have broken.
Unplugged:
Check brushes of electric motor, they may be worn down.
Unplugged:
Check main switch continuity with a meter on ohms or buzzer.
Limits:
No.
But there could be a thermal fuse either in or on the motor, to avoid overheating damage and smoke signals!

It could be the switch or the cord, amongst other things. To check the switch and cord, get to the back of the switch (with the unit unplugged of course) and do continuity tests from the plug to the switch incoming side on both the live and the neutral wires. If you do not have continuity on either one of the wires the cord is faulty. The break will probably be where the cord flexes the most. If you have continuity on the wires, try the switch in the on and off position and see that you have continuity when switched on. If the cord and the switch are in order, the problem is obviously within the vacuum cleaner.

Replace the whole thing. There is a bad connection in the wiring in the blanket..

Appears to be that the power is not getting to the temperature controllers. Suspect a problem in the wiring between the wall outlet (if not the wall outlet) to the temperature controllers. Look for broken plug at end of cord or a break in the cord between the plug and the controller. Last, you may have to look at the connections inside the temperature controller the power cord goes to in order to see if there is something loose inside. But do this with the blanket unplugged.

Some units have an on/off switch on the power unit itself. Check to make sure that is not turned on. Unplug your power unit and remove the 2 low voltage wires (not the power cord itself) . The low voltage wires start at the unit and run throught your home and attach to each hose inlet. They are usually attached to the unit by simple wire terminals or wire capped to small wires coming out. Just unlug the terminals or unscrew the wire caps and pull the connections apart. Plug your machine back in. If it still comes on the problem is the relay or circuit board/switch/ relay assembly inside the unit. If it doesn't come on with the low voltage wires unattached then you may have two wires touching somewhere in the low voltage wiring.

The fact that you wiggled the cord and it came on would seem to indicate a defective cord, either at the plug end or at the machine itself. Look again at where the cord enters the vac and at the wall. twist it slightly if you see a thin or collapsed area that is your problem.

does it have a headlight and does it work? if so then unplug the vacuum and turn the brushroller by hand a few times.then plug it back in,if it works then your motor might be bad.you can try to spray a little wd40 into the switch then.work the switch back and forth a few times first to get the lubricant worked in to the switch .try to turn it on now.see if you have any cuts in the cord.also see if the cord is pulled out of the vacuum .if so you might have a wire unplugged inside the base of the vacuum

It could be either the switch, the motor, or the cord reel. Try plugging it in and slowly feeding the cord in and out while clicking the power switch on and off. If the motor kicks on while doing this, you have an intermittent short in the cord reel.

If you remove the bag chamber lid, (on the s300 series merely opening it until it makes an awful cracking sound, and then lifting it off;) you will be able to access the screws to remove the rear housing. Under the exhaust filter are two screws that will allow you to remove the control unit, and then there are about five screws on the top that will need to be removed if you need to go further.

The control unit contains the switch, which you can test continuity through by using a VOM. If the switch checks out ok, you can test continuity through the other electrical components on the underside of the control unit. If you find a component that does not have continuity, replace it. If they all appear functional, continue with the disassembly:

On the s300 series it is easiest to flip the machine upside-down after removing the top screws, and then lifting the base away from the top housing. This will give you access to the motor and the cord reel.

What can occasionally happen with these cord reels is that they can wear out, allowing too much lateral slop of the actual reel assembly. You can shim this by using something on the axle in the center to push the reel assembly back against the contacts. I use a small rubber "doughnut," but pretty much anything non-conductive will do the trick.

If this doesn't restore electrical continuity, you'll probably need a new cord reel. I highly recommend against trying to do any further repairs on the cord reel itself, as it's a nightmare to deal with... especially if the main spring comes apart.

Any other problems will have to be referred to a repair station, since it could then be either the motor or the motor control board.

Do NOT attempt to test the motor by directly connecting it to wall voltage, as the actual power applied to the motor when it is functioning is stepped down by the circuits attached to it, and attempting to "hotwire" it will fry the motor.

Hope this helps,

-R

Unplug the unit from any power first.


To get the unit apart you have to Carefully pry off the wheels from both sides of the unit to allow access to another 4 torx screws. Use a longer flat blade screw driver and insert this between the wheel and the body of the vacum as close to the wheels center of rotation as much as possible. This should allow you open the clamshell like case. Once inside you can test the power switch and connections. My switch tested good but there is a problem with the power cord that I am trying to determine.

I am trying to replace the cord but the cord reel assembly and cord seems tighly integrated so I may end up buying the replacement power cord assembly if it is available for purchase to the general public and not only service centers. I will try the plug into the wall assembly first as it is easier to replace.

Good luck