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

1 Answer

Embeded Dirt Finder

I have a Hoover Wind tunnel vacuum cleaner. The red light on the embeded dirt finder always stays on. The red light is only supposed to be on under very dirty conditions. The green light is supposed to be on under normal conditions. The green light does work, it comes on when we first turn on the vacuum.

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 625 Answers
Re: Embeded Dirt Finder

Check out the switch that activates it. go to thehooverstore for a complete listing of hoover machines. I'm sure you'll find your machine listed along with an exploded diagram of the machine

Posted on Sep 22, 2007

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

2 Answers

Hoover - Red Light Dirt Sensor

check to make sure the settings didn't get inadvertently switched to the hi position, move the switch back and forth from high to reg a few times, then leave it on reg.

remove and hand wash the primary filter and secondary filter, dry throughly and replace them in the vacuum.

if none of this works, you will need to have the vacuum serviced, or if it is still working, just don't pay attention to the dirt-finder. the dirt sensor on your vacuum is located in the suction tube and is generally not accessible enough to clean without taking the vacuum apart.

hope this helps,

Nov 20, 2007 | Vacuums

1 Answer

Hoover wind tunnel the red light dirt finder stays on

There's a microphone inside the tube the dirt runs up. It listens for dirt coming up the tube. They just go bad and there's no making it better. You can either replace that entire assembly or ignore it. Fairly easy to replace. I'll include the part so you know what you're looking at.
Good luck! The Vac Dr.

Jan 13, 2013 | Hoover Company Wind Tunnel U53019 Upright...

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

Hoover Dirt Finder (light) not working

Good be a bad sensor, but if less then a year old, it is under warranty. I would take it in to a warranty repair shop and have them fix it.

May 10, 2008 | Hoover U6437-900 / U6439-900 Windtunnel...

4 Answers

Embedded dirt finder light stuck

The Hoover uses a small microphone that is positioned in the plastic housing that the end of the hose fits into, just behind the bag compartment. What happens is that when dirt comes up the hose and hits the 90 degree corner, just before it enters the bag, the microphone picks up the sound and transmits that info to the electonics that controls the lights. Sometimes the microphone will stick and the red light will stay lit. If you take a screwdriver and give the microphone area a sharp tap with the handle of the screwdriver, this will often jar the microphone and it will begin working again. If not, it may need to be replaced. NOTE: this function does not affect the cleaning efficiency of the vacuum. Your vacuum will still work normally whether the dirt sensor is working or not. It is a totally unrelated function to the vacuum itself.

Dec 31, 2007 | Vacuums

1 Answer

Embedded dirt finder light stuck

Try cleaning out all the pathways you can get to. Trapped particles can mess up this indicator. Particularly check the extra mesh filter that is under the bag (there's a plastic grid that snaps over it to hold it into place). Clean that out and make sure the bag is securely in place.

Dec 04, 2007 | Hoover U6437-900 / U6439-900 Windtunnel...

1 Answer

Problem with embedded dirt finder

Take the hose off at the back of the vac, should just turn then pull oull, look down inside the tube that the hose was connected to, there is a sensor there and if it is coated over with dirt, then it can't work, Clean it off and the try it, if it still stays on, then you have a bad sensor, and if this is less then a year old, you have a one year warranty on this. Take it to a warranty shop and take proof of purchase with you.

Oct 24, 2007 | Hoover U6630-900 WindTunnel Bagless...

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 Savvy

Does this happen at both Dirt Finder Sensitivity settings?

Sep 16, 2007 | Hoover U8171-900 / U8172-900 / U8173-900 /...

Not finding what you are looking for?
Hoover U6437-900 / U6439-900 Windtunnel Bagged Upright Vacuum Logo

1,458 people viewed this question

Ask a Question

Usually answered in minutes!

Top Hoover Vacuums Experts


Level 3 Expert

18257 Answers

Roger Potts

Level 3 Expert

694 Answers

Ryan S
Ryan S

Level 2 Expert

328 Answers

Are you a Hoover Vacuum Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides