Hoover U6437-900 / U6439-900 Windtunnel Bagged Upright Vacuum\015 I have the hoover model that has a red and green light feature, normally after vacumning a few minutes the red turns to green meaning the carpet is clean, however the red light continues to stay on, what could be the problem? I know my carpet is not that dirty!!\015

How to Identify and Fix Common Vacuum Problems ?

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The brush is jammed

Should the red warning light appear as shown (see above picture) the brush jammed warning alarm has activated as the brush bar is not spinning freely. This is possibly due to a build up of hair, threads and debris around the brush bar.

This usually occurs if the dust cannister is too full or the filters are clogged and the motor wasn`t getting enough cooling air passing over it.
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.
If there is a blockage or build up of debris around the brush roll preventing it from turning, then the power will automatically stop and the charge light will flash red.
Pulsing red:

The battery needs to be charged. Leave the robot on the base. If it`s still not fully charged after 3 hours visit Why does my Roomba® or Braava® not turn on or charge properly?

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.
The problem may lie in your vacuum cleaner`s adapter, charging dock, or battery and the electrical outlet. Try plugging your vacuum cleaner in to another outlet. If it is now working, the problem was in the first outlet that you have used. You should contact a certified electrician if you need to fix that outlet.
A thermal cut off is a heat-sensitive device that automatically disconnects the power to a vacuum`s motor when the operating temperature exceeds a safe value.
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.
The red light will turn blue when the battery is fully charged. The battery may require a reset and this can be done easily by removing the battery from the handle of the product and then simply re fitting it. The red light will turn blue when the battery is fully charged.
Short answer, the manufacture decides to either to add or not add a light. A light does help in showing if the carpet is clean or not. Most older vacuums and many higher priced vacuums have lights.
Plug in the charger as shown

There is an indicator light to show that it is charging. When fully charged the light turns blue. To charge the battery simply plug the charger in as shown, the battery can be charged while still in the cleaner or you can remove it for charging.

If your RoboVac shows a red light while charging, you can check the following: – Reconnect the adapter to the charging base. Make sure the white power indicator on the charging base lights up. – Let the RoboVac dock on its own to make sure the charging pins are connected properly.
A strong odor from the shellac that coats the copper coil windings is an indicator that the motor is about to or has burnt out. If the motor is still running, even if it turns on and off by itself as it is heating and cooling, you can still run the motor until it gives up for good.
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.

The BMS doesn`t only consist of the actual battery but also the circuitry and other components; together, they ensure the right range of voltage and current reaches the battery for a duration of time. So, in that respect, you can`t overcharge your handphone or vacuum cleaner.
All cordless vacuums have limited battery life and need to be recharged. On average, you can expect a cordless vacuums` battery to last between 15 to 40 minutes, which is hopefully all it takes to clean your floors or furniture. Once the battery dies, expect to charge it anywhere from 2 to 16 hours.
Their batteries typically last 30 to 40 minutes on a full charge, enough to clean a room or two but unlikely to tackle your whole home top to bottom. Cordless stick vacuums also have a shorter life expectancy than good plug-in vacuums. For most people, a cordless stick vac should be a sidekick to a plug-in vacuum.
Problems can occur when overused or clogged filters cause the vacuum motor to overheat. This not only shortens the motor life but causes a loss of suction. In some cases, total motor burn out can occur.
Overheating causes damage to the circuit components and can cause fire, explosion, and injury. Damage caused by overheating is usually irreversible; the only way to repair it is to replace some components.
Yes, as long as there is no safety hazard associated with continuous operation. In fact, it may be necessary to do so to pump down the base pressure.
Clogged up vacuum filters make a vacuum`s suction less effective. This means that the motor has to work harder, causing the vacuum to overheat, which reduces its lifespan. Not to mention, it won`t pick up as much dust or dirt, and your floors would remain dirty.
Hoover also recommend that they are replaced once per year for best results, replacement filters and bags can be purchased from the spares section of the website.
It`s generally recommended to change them along these timelines: True HEPA: 8,760 usable hours or about every 12 months. Activated Carbon: 8,760 usable hours or about every 12 months. Mesh Pre-Filter: Should be cleaned every 2-4 weeks.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

I have a Roomba 560 (it’s still in warranty !!) and, after my summer vacation, it has a problem.
When I’m charging Roomba, the orange light blinks (and this is normal!) but this orange blinking continues forever…. the light doesn’t change to green.
If I detach Roomba from the charger, the light become green and it works normally until the light changes to red and I have to charge it again.

WHY, DURING THE CHARGING PHASE, THE LIGHT DOESN’T CHANGE FROM ORANGE-BLINKING TO GREEN?

HAVE I

ANSWER : The problem is not with the charger itself but it is with the battery inside the Roomba. It sunds like one or more of the cells has gone bad so its not holding the same charge as it did. I would recomend sending it in while the warranty is still valid so they will replace it. Your charger and the Roomba itself should be fine.

A few tips to keep the battery working longer:
Only charge the battery when it is drained all the way to zero. It will help keep the battery active.

Only charge the battery until it is full and then disconect it from the power source. It will keep it active longer plus it will help keep your electric bill down.

Red light stays on
ANSWER : It sounds like the plates inside the vacuum that detect the dirt have become dirty. I don’t remember where they are, but I think they’re accessible if you remove a certain hose. Again, I don’t know which hose it is.

Dirt finder I have a Hoover U6439-900.  After the cleaner was used a few times, the dirt finder light cycles between green and red on the regular setting and will not go to green.  On the sensitive setting, the red light stays on most of the time.  I have tried to run the cleaner to remove any dirt but have not solved the problem.
ANSWER : The sensor may be bad, or it may be coated over with dirt. Re,ove the hose at the back of the vacuum, the head of the sensor is down inside that opening, reach in there and clean it off and see it that corrects the problem, if not replace the sensor.

After being on the charger for days and the green light is on I press the clean button. The Roomba leaves the charging unit and travels about 1 foot then the red light comes on and it beeps and won’t do anything more the red light continues to pulse.
ANSWER : Buy a new battery ,the old one isn’t holding a charge

Embedded light sensor stays red all the time
ANSWER : The back cover is called the a micro/dust assembly. See #21 here:
.http://www.ereplacementparts.com/hoover-u6630900-windtunnel-selfpropelled-bagless-vacuum-parts-c-37315_37337_37584.html
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.The little sensor should be in the round recess in the top of that assembly. When you are putting the cover back on you have to use a pair of needle nose pliers to push the sensor into the round recess until it is snug. It is hard to do because the wires to the sensor are very short and you have to be careful not to break the wires on the sensor. The sensor is a little microphone that senses the noise of the dirt going through the EDF. The first time I did mine I didn’t push it in hard enough and came out of the EDF recess and fell inside the vacuum body.

Red light stays on
ANSWER : Most likely the hose or the inlet down by the brush roll has a clog in it. The red light indicates a full bag, but if there is a clog, then it thinks it has a full bag.

My Hoover Dirt Finder red light stays on. All
ANSWER : Inspection of the circuit board found that the 470uF capacitor looked damaged. I replaced it and I now have the Green and Red lights are working correctly.

When i turn on the vacuum it shuts right off. the speckled bag light is on (2 lights under the plug light)
ANSWER : Im going to guess you have an Electrolux Tank. the control valve inside probably went bad. normally i just disconnect it. Do no try to take it apart if you don’t know what your doing. take it to a vacuum shop.