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Kenmore Central Vac model 34730, no power at Unit

I have the same problem. Our central vac is 1.5 yrs old. No power at source. Unplug the unit, plug it back in and the green light is on. Press the start button on the unit and the green light goes out. Nothing happens. Sears won't help. If this is a circuit board problem- where can I get a new circuit board?
Nothing looks/feels loose. The fuse on the circuit board looks intact. No smells.
Thanks

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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reddevil6
  • 1673 Answers

SOURCE: continuous running

Central vacs have relays in them, some stand alone, others mount on a circuit board. A stuck relay causes this type of problem. At the unit disconnect the low voltage wires, plug in your unit, does it still come on, if it does then you have a bad relay. If it doesn't then you have a problem somewhere in your low voltage wiring. One of the outlets, the wires may be touching or there is a staple casuing a short.

Posted on Mar 06, 2008

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Posted on Oct 14, 2008

  • 4 Answers

SOURCE: NuTone Central vac won't turn off

If the central vacuum tank will not turn OFF even with the switch in the “OFF” position, then the low-voltage wires should be disconnected from the tank. If the tank continues to run and still will not turn off, then most likely the relay inside is defective (but it could be a defective and/or shorted ON/OFF switch). If with the low-voltage wires disconnected the tank is able to then be turned off with the switch, then there is a short in the low-voltage wires or a hose is plugged into an inlet somewhere. ~ TTURAMBAR

Posted on Mar 27, 2009

CorvetteKing
  • 108 Answers

SOURCE: Central Vac will not turn on.

These problems are nearly exclusively caused by a bad circut board and replacing it is the fix. Bad boards can cause many different effects so its nearly impossible to be sure. The 9v signal wire is not enough to short out an entire unit so it is unlikely the hose. If it is a direct connect system and you are pulling power from the 110 somehow that would cause main unit problems but that is unlikely at best. Sounds like a failed board to me.

Best of Luck

Posted on Jun 05, 2009

ThinkVacuums
  • 144 Answers

SOURCE: Central vac pipe stuffed with pine needles from XMAS!

You can use a Tornado Cloth to clean out your central vacuum piping. Its the simplest and most cost-effective maintenance routine you can do.

You can purchase them from here

http://www.thinkvacuums.com/new.htm#Maintenance

Posted on Jul 29, 2009

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1 Answer

Why Kenmore Central Vacuum wont power on?


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I have a broan central vac 24 yrs old ,vac works if you turn sw on cannister,not by plugging hose att,is this a major problem,thanks


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We just moved in - the house is about 9 years old. I have a Eureka Mega Boss central vac - looks like model # is CV20220. 12.4 amps, 120 volts. Can't figure out what type of bags I need. Can you...


Well, for this unit you will need any of the following bags,

Eureka genuine Part# 90610
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Most of the bags there are available at your local vacuum shop, and sometimes even Sears. The Kenmore central vac bag is, can and will fit your Eureka Mega Boss. Prices range on these bags anywhere from $12-$20 for packages of 3. Generally you will replace a bag once every 3-4 months.

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Nov 10, 2010 | Vacuums

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On my kenmore central vac no power unplug unit plug it back green light comes on but try turning vac on green light goes off again .


Please clarify that we are talking about the central vac LED/switch panel panel and plugging it into a 110 V wall receptacle.
If I understand when you unplug from the power source ,then plug back in the green LED comes on, looking normal ? But when you manually activate the switch on the motor housing of the vac itself the vac does not start and the LED goes out, so no green or red LED at that point?
If this is the case , Kenmore CV's built approx 5 years ago (MADE by EUREKA) and prior had a circuit board with attached cord (as opposed to detachable) which was prone to relay failure. There were several symptoms, most common was that the relay on that switch panel /circuit board would fuse on and the vac would continue to run when the hose was detached from the wall.However some I worked on from that era had exactly the same symptom you describe. If your unit is between 5 and 10 years old and this sounds accurate, you can unscrew this curved side panel relay with one philips screw. Inside on the PCB will be an L shaped black or white 24volt relay, generally rated at 10 amps. The replacement board or relay will be rated at least 24V/ 15 amps or more. If you can isolate your motor and test it separtely with a power cord or meter , the realy/board will be the only control componnet left.
If you have a small tipped soldering IRON, not a gun, you can generally find a replacement relay to rebuild the board for about $6 at an electronics parts store. Otherwise you will need to replace the control board itself, anywhere form $45 to $70 plus service call if you have a tech come out to the house, and the tech will just unscrew , detach wires and replace the board, no repair , approx 15 minutes work. This will likely cost over $100.
Please post back with your results

Oct 24, 2009 | Easy Flo EF1400 Central System Vacuum

1 Answer

Central Vac will not turn on.


These problems are nearly exclusively caused by a bad circut board and replacing it is the fix. Bad boards can cause many different effects so its nearly impossible to be sure. The 9v signal wire is not enough to short out an entire unit so it is unlikely the hose. If it is a direct connect system and you are pulling power from the 110 somehow that would cause main unit problems but that is unlikely at best. Sounds like a failed board to me.

Best of Luck

Jun 04, 2009 | Easy Flo EF1400 Central System Vacuum

1 Answer

NuTone CV353 Central Vac does not start when hose is plugged into


Try to plug the hose in sideways. So the top of the hose is rotated 90 degrees. If the unit turns on then there is something wrong with the hose. It might be a short or it could be a bad switch on the handle. If the unit still wont turn on I would think that maybe the low voltage wire got disconnected from the unit or there is a break in the low voltage wire somewhere along the way. Let me know if you plugging the hose in sideways works.

Feb 22, 2009 | Broan-NuTone CV353 Central Vacuum

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Central Vac does not shut off


Sounds like the relay that is in the central vac unit is stuck to the ON position. When you plug it back in..does it start right up ? If so.. You should be able to disconnect all the receptacle feeds to the central vac unit at the central vac unit to determine which one ( if any) is calling for the vac to stay on.. if none are.. then it is internal to the vac and may be a stuck relay... Hope that gives you some ideas to check...

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Kenmore central Vac - where to connect low voltage wires?


Mosy central vacs have 2 spades close together that stick out on the side, usually where the circuit breaker and auto/manual switch is. This is where you plug the low voltage wires into.

May 13, 2008 | Vacuums

2 Answers

I have a one year old Beam central vac. It has supervalves. The handle (connected to the hose stopped turning on the unit. The handle still powers the brush but no longer turns on the suction?


http://geeksquad.fixya.com/ThreadView.aspx?prdid=0&thid=566201
Generic problem for all Vacuums
I have a one year
posted by jon89 on May 02, 2008
I have a one year old Beam central vac. It has supervalves. The handle (connected to the hose stopped turning on the unit. The handle still powers the brush but no longer turns on the suction?

Hello,
I would advise you to ALWAYS to FIRST UNPLUG YOUR VACUUM before beginning any service procedure. The Beam Central Vac may have more than a one year factory warranty and it sounds to me that you may have a bad relay switch the Central Vac, if you do it should be covered under the factory warranty. Otherwise, you may have a bad supervalves or a wire came loose, if the hose switch turns on the power nozzle then it may be a bad supervalve or a bad relay and to contact the installer or the manufacturer of Beam. So if you need further assistance, please feel free to contact your local vacuum cleaner dealer in your area or in the yellow pages, or contact the factory phone number or website to further assist you with your questions.

http://www.beamvac.com/usa/ Owner Support
Customer Service 1-800-369-2326 Phone #
Email: beam.dir-support@beamvac.com
Technical Support: beam.tech-info@beasmvac.com
Thanks, Don the Vac Man
Go Ahead. Use Us.

May 02, 2008 | Vacuums

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