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Sensor light stays red no matter how long I vacuum. I think the sensor light is broken.

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I think you have a clog and/or a dirty filter.

Check all hoses - dont just look at them ... disconnect them - run something through them - check completely. I pick up dozens of discarded machines from the trash heap - more than 90% have clogged hoses and nothing else wrong with them.

I hope this helps

a

Posted on Sep 26, 2009

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1 Answer

Red "DIRTY" light is on most of time, even after going over and over what should be clean carpets. Head is lifted, getting good suction. Got a solution?


The sensor that detects the dirt can get dirty causing the light to stay on. Hold the vacuum up in the air or position the vacuum in a way to observe the light when the vacuum is running but the nozzle assembly is not on the floor so it cannot be picking up any dirt. If the light will not go off it's likely the sensor needs cleaned.

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How to fix sensor s12. red light for bag stays on even when vacuum bag is not full and the vacuum is clear


You most likely will need to change the Yoke assembly. There is a sensor built in that gets clogged with fine debris over time. This will take care of the problem.

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Uh70015 dirt sensor stays on green. Goes on red for about 5 seconds then green. Can clearly see the floor is dirty and it is picking up stuff.


ahh the good ol electronics on vacuums selling the product again...

not to worry, your feature is working properly, your vacuum is working fine too.

Imagine if you will making a circle with your pointer finger and your thumb. Now put a string or thread across in a straight line there. The string would be the size of the beam of light that the sensor uses. Your finger and thumb are about the size of the tube that the dirt and dust is passing by. Unless the dirt passes and cuts through the beam of light, then it will register. otherwise if it passes around the beam of light, the sensor thinks your carpet is clean.

The opposite sometimes will happen too where it will stay constant red. That means that the sensor is completely covered in dirt and will not register anymore.

Hope this helps.
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1 Answer

Embedded light sensor stays red all the time


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


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.

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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

Red light stays on


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.

Dec 07, 2007 | Lindhaus Activa 30-38 Bagged Upright...

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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.

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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,
trin

Nov 20, 2007 | Vacuums

1 Answer

Embedded Dirt Finder green light won't come back on - stays red


The dirt sensor is a motion detector. After it gets dirty it will either stay red or stay green. You can have the vacuum serviced at your local vac shop and possibly get this fixed. Sometimes they are as good as new and sometimes they are not repairable. It will not effect anything else though.

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