Question about Broan-NuTone CV353 Central Vacuum

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Nutone Scovill 350 will only turn off if unplugged

Nutone Scovill 350 central vac system will only turn off if unplugged

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Some units have an on/off switch on the power unit itself. Check to make sure that is not turned on. Unplug your power unit and remove the 2 low voltage wires (not the power cord itself) . The low voltage wires start at the unit and run throught your home and attach to each hose inlet. They are usually attached to the unit by simple wire terminals or wire capped to small wires coming out. Just unlug the terminals or unscrew the wire caps and pull the connections apart. Plug your machine back in. If it still comes on the problem is the relay or circuit board/switch/ relay assembly inside the unit. If it doesn't come on with the low voltage wires unattached then you may have two wires touching somewhere in the low voltage wiring.

Posted on May 21, 2010

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My Broan-NuTone central vac shuts off after I am vacuuming for a couple of minutes. I turn it off for about 10 minutes and start vacuuming again and it keeps shutting off. What is wrong with it? I...


Some of these units have had trouble with the motors and this is what causes them to shut off. NuTone has been pretty good about replacing them under warranty. 1-888-336-6151.

Aug 17, 2011 | Broan-NuTone VX475 Bagged Central System...

1 Answer

No suction


Use the guide at builtinvacuum.com/flowchrt.html to find the issue and solution. Most likely you need to test it without any filter and be sure the bottom of the unit is attached :) To get access to the motors you need to unbolt the very top sides.

Jul 28, 2010 | Broan-NuTone CV350 Performance Bagged...

1 Answer

Central vac will not turn off


You have a defective internal relay on the vac. Check for warranty coverage as this is a common occurrence on these big box store units.
If beyond warranty the relay should be a straight forward unit, miniature circuit board type plug in device. Find a Broan Nutone service center or take to vac pro shop for parts.

Nov 01, 2009 | Broan-NuTone VX475 Bagged Central System...

1 Answer

Nutone CV556 Vaccuum Cleaner -Continuously running


Start with this. Unplug the vac to shut off, then disconnect the low voltage wiring at the vac.Plug the vac back in. If the vac still runs you have an internal short on the relay or wiring inside the vac.
If the vac stops then the vac and final wiring is OK and the problem is in the wiring in the house.
Have you removed any inlets for painting or had any renos done or pictures hung. If so undo what you did last. If inlets were disturbed remove them and look for low voltage vac wires touching metal backing plates in the wall or touching the inlet mounting screws.
If you have done a reno or hung pictures you may have pierece the wire for the vac creating a low voltage short which will keep the vac running until removed. I have seen this happen with freshly installed 1/4 round molding along a baseboard

Sep 07, 2009 | Broan-NuTone CV556 Cyclonic Bagless...

2 Answers

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

Mar 11, 2009 | Broan-NuTone VX475 Bagged Central System...

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

1 Answer

Old Nutone central vac system turned itself on and ran for hours.


if your unit normally turns on when you open the flap on the wall inlets then you should check each inlet for a switch or a button, sometimes those buttons can get loose and fall into the wall making the unit stay on. if your unit normally turns on when you plug the hose into the inlet then it would probably be a relay usually on the main tank itself try locating them and gently tapping on them with the rubber end of a screwdriver to see if you can un-stick them.

Sep 19, 2008 | Broan-NuTone VX475 Bagged Central System...

2 Answers

I have a 3 year old NuTone CV 353W central vac system and recently the switch on the hose handle does not turn the system on from any outlet in the house. I have to plug the hose into the outlet and then...


http://geeksquad.fixya.com/ThreadView.aspx?prdid=0&thid=567634
Generic problem for all Vacuums
I have a 3 year
posted by patfitz on May 03, 2008
I have a 3 year old NuTone CV 353W central vac system and recently the switch on the hose handle does not turn the system on from any outlet in the house. I have to plug the hose into the outlet and then turn the unit on from the switch on the canister. Any help would be greatly appreciated. Thanks

Hello,
I would advise you to ALWAYS to FIRST UNPLUG YOUR VACUUM before beginning any service procedure. There are a couple of things that come to mind, 1st. you may have a bad switch in the hose and in most cases that can be repaired – if not you would have to purchase a new vacuum hose. 2nd. You may have a bad inlet valve in your hose and most of them are low volt of which would only cost less than $10.00 and can be replaced yourself unless you have what they call a SuperValve of which has 2 low volt wires and then it is wired to your home electricity and that should be replaced by an licensed electrician. It is a low volt and high volt inlet.

#3. the last thing you may check id that you may have a bad relay in the canister itself. Because you should be able to turn on the Central Vac with the switch on the hose and everything should work just fine . feel free to contact your local vacuum cleaner dealer in your area of call the Nutone Factory cust serv line for further assistance. 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://nutone.com/ Customer Service
Nutone Inc.
9825 Kenwood Road
Suite #301
Cincinnati, OH 45242
Customer Service 1-888-336-3948
Technical Support 1-888-336-6151
Thanks, Don the Vac Man
Go Ahead. Use Us.

May 03, 2008 | Broan-NuTone CV450 Central Bagged Central...

1 Answer

No suction on lower level


http://www.geeksquad.fixya.com/ThreadView.aspx?prdid=0&thid=539794
Generic problem for all Vacuums
No suction on lower level
Posted by phil55555 on Apr 23, 2008
Nutone central vac
no suction on lower level second floor fine
ran fish tape but it does not go all the way through,
do i need to take pipe out.

Hello,
I would advise you to ALWAYS to FIRST UNPLUG YOUR VACUUM before beginning any service procedure.
Not @ first, try to get a central vacuum cuff and go to each and every inlet / outlet down the basement and put the cuff in the inlet – the central vac should come on and possibly might unclog the pipe, 2nd, try taking another canister type vacuum while the central vac is running and open the inlet door and try to “pull apart the clog in the pipe” – this does work upon occasion if not you can try a plumbers snake – but be careful because the walls of the pvc pipe are thin wall and you don’t want to poke a hole in the pipe or other wise you will have to replace the pipe. The absolute last resort should be to replace the pipe if all other do not work. Feel free to contact your local vacuum dealer in your area or in the yellow pages , or contact the factory @ the phone #’s listed below:
http://nutone.com --- Customer Service
NuTone Inc.
9825 Kenwood Road Suite 301
Cincinnati, OH 45242
In U.S.A. call:
1-888-336-3948 for Customer Service
1-888-336-6151 for Technical Support

In Canada call: 1-888-882-7626

Thanks, Don – The Vac Man
Go Ahead. Use Us.

Apr 23, 2008 | Vacuums

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