Hoover U6437-900 / U6439-900 Windtunnel Bagged Upright Vacuum

How to Identify and Fix Common Vacuum Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced Vacuum Technicians :

If a vacuum motor overheats due to poor airflow, the vacuum will automatically shut off. This is most commonly caused by an air passage that is plugged by hair or dirt. Refer to the leaky hose guide to remove the hose, then inspect for hair or dirt clogs.
Overheated Motor

If your vacuum was working fine and then suddenly shut off, it may have overheated. Most vacuums are equipped with a thermal protector safety switch that won`t allow the motor to run when it becomes overheated. You will need to wait for 30 minutes to 2 hours, depending on your machine, to try again.

NOTE: If the powerhead is blocked, the motor will switch off automatically. If this occurs, switch off the vacuum cleaner and remove the battery. Remove the blockage, and switch on the cleaner.
Check that the vacuum cleaner is plugged into a working power outlet and that fuses and breakers don`t need resetting. An activated thermal cut-out due to a blockage is the next most likely cause of the problem. Check for blockages in the hose and filters, and remove any obstructions that you find.
Blockages or dirty filters may cause this to happen, the safety cut off will activate and switch off the electrical supply. If the cleaner has cut out, simply unplug and check for a blockage or dirty filters.
Overheating usually occurs because the dust bag has not been emptied, filter has not been cleaned or there is a blockage in the floor tool, wand or bent hand piece. If your vacuum shuts down unexpectedly, make sure you turn the vacuum off and unplug it from the wall socket.
If you find that your machine is turning off intermittently, the filter in your vacuum is most likely full and covering the ventilation system. Remove the filter, then empty and wash it. Allow the filter to dry for at least 24 hours, or until it is completely dry.
Turns off automatically

For a cordless miele stick vacuum cleaner, a temperature limiter switch automatically turns off the vacuum cleaner if it gets too hot. (Some models have a temperature warning light.) Overheating may be caused by a blockage in the vacuum, or due to a full dustbag and/or filters.

If the vacuum cleaner stops suddenly, the filters should be checked to make sure that they are not blocked or that they require changing. This applies to both bagged and bagless models. Also check if the nozzle or hose are blocked.
For best results the filters can be washed in warm water but check they are thoroughly dry before putting them back into place, this may take up to 24 hours. Hoover recommend that you fit new filters once per year to keep your vacuum cleaner in tip top working order.
A washable HEPA filter should be cleaned by rinsing it under cold water. You should be careful not to touch the filter material, only allowing it to come in contact with water. Allow the filter to completely dry before reinstalling it. Some filters have special instructions.
Twist the lid until the arrows line up and open up the container to get to the hepa filter. Take the filter out and brush the dirt out, once a month wash the filter in warm water. Please make sure it is thoroughly dry before popping it back in – this may take around 24 hours.
How Vacuum Switches Work. Once the switch registers a change in the negative pressure based on the preset sensitivity of the setpoint, the diaphragm of the switch will open or close the attached circuit, turning off or powering on a device. Vacuum switches can be used with NO and NC states.
Vacuuming once a month is not recommended. Carpet and rugs are typically vacuumed more than hard surfaces because they collect more soil and dust that can become damaging as it grounds deep into the fibers.
The suction motor creates vacuum pressure and suction by rotating a motor fan. The impeller rotates at an incredibly high speed of about 30,000 to 35,000 RPM. A suction motor`s power is measured by multiplying the rate of air flow and the vacuum pressure, which induces air flow from the brush through the hose.
One of the first things to do when your Dyson vacuum cleaner keeps starting and stopping is to empty the bin. It may be full, or the machine may simply perceive it as too full to continue working. Dyson vacuum cleaners require constant airflow through them to work, and a full bin can stop this from happening.
It`s possible there`s a power consumption issue, with there just not being enough residual charge to run the machine. A new battery should fix this. My other thought is that it`s overheating. If too much power is pushed through the motor, which MAX power does, it could stop after a few seconds if it become hot.
The vacuum has a safety feature that turns off the vacuum when the vacuum gets to a certain high temperature or overheats. This happens because the vacuum has a motor protective thermostat. If the vacuum turns off due to overheating, the thermostat has to be reset before you can use it again.
You can think of the vacuum as an object that can hold energy (the radiation) and thus can have a temperature. As heat flows into it, that radiation temperature goes up. In the long run, the atoms also will reach thermal equilibrium, as some of them evaporate into the vacuum.
A vacuum cleaner can run continuously for 30 – 60 min each time. The vacuum cleaner has no suction power. For example, a hair cannot be sucked up.
This usually happens because the filters need washing or your machine is blocked. If your machine continues to overheat, please refrain from using it until it has cooled down sufficiently and then carry out the performance checks.
Check Your Battery & Charger:

Batteries don`t last forever depending on age and use. You may need to buy a new battery if your Dyson vacuum is turning on and off after only a few minutes of use.

Check For Clogs or Blocks In The Vacuum

Check the hoses, the filters, and throughout the vacuum, and clean out any blockages or clogs. Vacuums will likely also have a recommended cooldown time to ensure that the vacuum won`t overheat. You will need to wait for that time before you turn the vacuum back on.

Overheating can damage your vacuum. So if it starts to potentially reach a condition where it might overheat, it will shut off instead. Check for a few potential problems and let your vacuum cool down in order to use it again.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

I purchased a brand new Eureka Pet vacuum, sorry don’t know exact name but it the one that has the self cleaning duster on it. Last night I used the vacuum on my carpet, it was working fine until I accidently sucked up the corner of a scarf that was hanging off a couch. I shut the vacuum off, pulled out the scarf and and resumed vacuuming. Much to my dismay the suction on the vacuum had ceased. Can you tell me if there is a reset button on the vacuum? The vacuum does not appear to be damage
ANSWER : If the motor is running, there should be suction. Possible problems depend on whether it’s a canister or upright and are:
.A clog in the hose, UR or canister. Detach hose. Drop small coin in one end and lift hose causing it to roll out the other. If it does, no clog in hose. Drop same coin into hose opening on power head. If it rolls out, no clog in PN.
.Broken fan blades, UR. Needs to be taken to shop for repair/replacement.
.
.A reset button is for use if the motor isn’t running, so won’t have anything to do with the suction.

Dirt devil vacuum cleaner–trouble vacuuming dirt and pet hair on carpeting –is the problem with the spinning brush which contacts the floor,  not contacting the carpeting??  I thought (when I bought this vacuum) that the aforementioned brush was adjustable to various heights of carpeting.  Sometimes, it seems like nothing is being vacuumed up –unless I have just put a new bag on the vacuum… Do I need or can I replace the spinning brush on the bottom of the vacuum so it kicks up and vacuums
ANSWER : Try replacing the belt. Rubber belts stretch out after about a year.

I have a Kirby G4 Vacuum Cleaner – MOdel G4 D. I have never had any problems or repairs done to it in the past ten plus years that I’ve had it. This is an upright vacuum. I was vacuuming the carpet floor and was not having any trouble at all. I switched the vacuum off and moved it into a different room. When I tried to turn on the vacuum, it would not turn on. I checked with different outlets, used both front attachment and hose attachment. Checked the front part of the motor/ spiral case. This
ANSWER : Hello,
.My educated guess is that it’s either the switch or the power cord. Here are a couple of guides to help with diagnosis and repair…
.
.http://reviews.ebay.com/COMMON-PROBLEMS-WITH-THE-KIRBY-VACUUM-TROUBLESHOOTING_W0QQugidZ10000000003800312
.
.http://reviews.ebay.com/REPLACING-THE-POWER-SWITCH-ON-ANY-KIRBY-G-SERIES-VACUUM_W0QQugidZ10000000003752018
.
.Hope this helps!!
.Marci

Hello, I have a problem with my Eureka Powerline bagged upright vacuum. It has a 12 amp motor and is model #4352, Type D. It was probably bought new in 1998. My problem is, while vacuuming today the motor seemed to slow down all of the sudden and then began smelling like burning rubber. I shut the vacuum off to check for blockages but could not find anything blocked. When I then turned it on again it runs but seems to only be running at 1/2 the motor speed and still has the rubber buring smell.
ANSWER : It sounds like a rubber sealing in the motor has come loose and is being constantly rubbed against the walls of the motor with would cause the smell and loss of motor speed caused by the fricton of rubber against the rod so if you can get to the motor try to open it and see if you can get it if not take it to a small engine repair service hope this was helpful:)

While vacuuming the red light for the bag of the vacuum came on and the vacuum stopped. The bag was no where near full so I replaced it with a new bag – same problem. It vaccumes for a minute or then stops with bag light on. It is the correct bag for the machine – so what’s the problem?
ANSWER : I’m assuming this is the Epic 6500 or similar model.
.Detach the hose, turn vacuum on. If it runs, place palm of hand against inport hole. If it shuts off the problem is with either the control valve setting or the control valve assembly itself.
.For cvs, turn dial on top of vacuum all the way to the largest dot, and try above test again. If that doesn’t work, then it’s the CVA. It needs to be cleaned or replaced, which is an in shop job. Fro repair, take it to the nearest Aerus Electrolux store. I recommend a full clean and service to remove any dust/dirt from the motor, fan assembly, and other internal parts.
.
.Another problem, which relates to the dial setting, is that fine dust will quickly clog the pores of the bag, resulting in the machine “thinking” the bag is full. Turning the dial to the proper setting helps get the bag fuller. The middle setting is the normal setting, and is for areas without fine dust and sand.

Suction problem I have a Hoover Widepath Fold Away, 12 amp motor vacuum cleaner and the problem I am having is every time I vacuum, the vacuum gets clogged up with carpet. I am probably only able to do one stroke then it gets clogged and I have to stop and unclog it or it spits it out on the carpet. This is very frustrating and I don’t get much vacuuming done. Please can you help me. Thank you. Gwen email is [email protected]
ANSWER : Get rid of the carpet its shredding and falling apart.no sence in vacuuming old rotten carpet.or try using a vacuum without a brush roller and just suction

Electrolux Epic 6500SR Full Bag sensor working, Does not Reset properly
ANSWER : 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.

Same Shut Off Problem as Hamster71
ANSWER : The part that you call the particle size sensetivity adjuster is bad. There are 2 seals in the assembly, the lower seal is slipping out of place because the plastic lip which keeps it in place is broken. Split housings and replace part. This machine is alot of work to take appart and get back together correctly. Might want to bring to local vac shop. good luck.