Question about Broan-NuTone CV350 Performance Bagged Central System Vacuum

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I have a nutone 350 central vac system and will will not start. Plug in the hose and I can hear a buzz at the unit like it is getting power but is not turning on. Does not matter what outlet I try

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Your problem is incide the vaccum some object is stock , and the blower is cut.

Posted on Sep 08, 2009

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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


Broan 450 air-watt and 8.5 amp power unit. Covers 3,000 sq. one 30-ft. crush-proof hose with on/off switch, one 10-in. wide hard floor brush features swivel neck for easy maneuverability around furniture. My new home is just under 2000sf. Will this new unit have enough suction?? Just buy or don't??


Jan 22, 2013 | Broan-NuTone CV350 Central Vacuum

1 Answer

When the switch is turned on the vaccum cleaner starts running instead of,when the hose is connected. removed the earth lines from the unit and truned on the vaccum cleaner. It did the same. What might...


Dirty switch at vac where hose connects go to radio shack get some tuner cleaner spray. spray this switch and plug hose in and out a few times spray again see if this works

Feb 26, 2011 | Broan-NuTone CV554 Cyclonic Bagless...

1 Answer

Nutone Scovill 350 will only turn off if unplugged


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.

May 14, 2010 | Broan-NuTone CV353 Central Vacuum

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

I have a Nutone central vacuum model number CV450W that was working great until I recently removed the hose and it now runs continuously until I pull the plug....any suggestions please


Disconnect the thin low voltage wiring between the vac and the rest of the house. If the vac continues to run you have a defective relay in the vac motor housing.
If the vac stops you have a short in the wiring in the house, likely behind an inlet in the wall.
If any inlets have been disturbed for painting or renos lately that would be the first spot to look in the house for a problem. Look for wires behind the inlet valve which are touching against each other or a mounting screw or against a metal mounting plate behind the inlet. Start at the last inlet used. Be careful not to loose the spring under the screws where the wiring attaches to the inlets

Oct 08, 2009 | Broan-NuTone CV450 Central Bagged Central...

1 Answer

Nutone 350 won't turn on at any plug-in opening. there is electricity at box where connected


You may have a bag hose. Try plugging your hose in sideways. This will bypass the switch on the hose. Does the switch on the unit work?

Sep 28, 2009 | Broan-NuTone CV350 Performance Bagged...

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...

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...

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