Question about Hoover Windtunnel Supreme U5280-900 Upright Vacuum

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Dirt sensor The dirt sensor on windtunnel supreme doesn't work anymore. It is a bagged windtunnel. The sensor remains red.

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Re: dirt sensor - Hoover Windtunnel Supreme U5280-900 Upright Vacuum Vacuums

The sensor remains red.

Posted on Apr 01, 2008

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Hoover windtunnel dirt finder light stays red. We've cleaned the elbow the roller the hose and have a clean bag. The vacuum is new only had it for 3 months.

I'm not sure about a 3 month old vac, I'd probably go the warranty route. However, for the older vacs thy start getting false positives. The sensor is simply a microphone hooked to a computer chip detecting sounds of dirt entering the bag.
To rig it to start working, you'll need to remove the tool accessory tray and elbow that enters the back of the vac, and attached to the bag. This will reveal the microphone at the elbow, and wire that runs into the bottom area of the vac. When on, a large amount of air comes from the bottom screw and area where the wires enter. My fix was to clean up the microphone contact points a little bit with a screwdriver, and then leave the vac running while putting in dampering in the hole at the bottom, and around the back of the elbow. Cotton balls and electrical tape at the bottom hole, and napkins around the outside of the elbow (wedged between the back of the vac assembly and elbow did the trick). The schematic for the vac is here: http<colon>//www<dot>vacsrus<dot>com/CartGenie/pg_U6485900<dot>asp
Look for micrphone.

May 12, 2010 | Hoover U6437-900 / U6439-900 Windtunnel...

1 Answer

My Hoover Dirt Finder red light stays on. All

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.

Jan 19, 2010 | Hoover U6476-910 WindTunnel Upright Vacuum...

1 Answer

Dirt sensor on my hoover supreme remains remains on red all the time

i had one i think you need to clean felter on it the one on side

Apr 20, 2009 | Hoover Windtunnel Supreme U5280-900...

1 Answer

Hoover U5468-900 WindTunnel Supreme suction is suddenly poor

The other possibility is there is a blockage in the foot. these models have dual channel air flow (windtunnel) and become blocked when not cleaned depending on use. under the roller there is a cavity that can be removed for cleaning. a hot motor can be caused by poor air flow.

Mar 15, 2009 | Hoover U5453-900 WindTunnel Supreme Bagged...

1 Answer

Just not sucking like it did

the impella on the motor is clogged and needs to be scraped. dissasemble and its an easy fix from the bottom of the unit

Jan 23, 2009 | Hoover U5453-900 WindTunnel Supreme Bagged...

1 Answer

Sensor wont go to green

Try cleaning the dirt sensor. It's usually located where the bag connects to the vacuum. Take the bag off and clean the inside of the tube that goes into the bag with a damp cloth.

Jan 11, 2009 | Hoover U5450-900 Windtunnel Supreme Bagged...

1 Answer


You either have a problem with the sensor or the circuit board. Most times it is with the sensor. Take the hose off, look inside of the part that the hose hooks to, you will see a disc, it may be clogged with dirt, try cleaning it, if that doesn't work, then the sensor may be bad.

Dec 14, 2008 | Hoover U6437-900 / U6439-900 Windtunnel...

3 Answers

Dirt finder sensor stopped working

I had the same problem with a hoover windtunnel 6200 - u5477-900. I removed the flexible hose from top of the plastic tube running vertically along the right side of the back of the vacuum. When I used a flashlight to look into the plastic tube, I could see a clog at the bottom, where the flexible hose curved frontwards towards the brushes. I then removed the 2 screws holding the vertical plastic tube to the vacuum. When I disconnected the plastic tube from the flexible hose at the bottom, I found a clog of dirt and dog hair. After removing the clog and reassembling, the clean / dirty light now moves back and forth from red to green.

Jan 29, 2008 | Hoover U6437-900 / U6439-900 Windtunnel...

1 Answer

Dirt finder

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.

Oct 16, 2007 | Hoover U6437-900 / U6439-900 Windtunnel...

1 Answer

Hoover U5450900

On the back, take the hose off, inside the duct you can see a disc,(it is on the bottom of the duct) it may be filmed over with dirt, that is the sensor, clean it off then try again. If it still comes on, then it may be bad or you have a clog in the hose or the dirt inlet by the brush roll.

Jul 02, 2007 | Hoover U5450-900 Windtunnel Supreme Bagged...

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