Question about Broan-NuTone VX475 Bagged Central System Vacuum

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Nutone vx550 vac problem

I have a nutone vx550 central vac system that keeps shutting off while using it. i replaced the bag and it still shuts down. help!

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  • Pavlo Bobrek Mar 13, 2008

    NuTone VX550 unit shuts down after a couple of minutes of operation. There is only a single green light on indicating correctly that the bag is essentially empty. This unit worked fine for about a year, then this problem started happening. The motor sounds fine. Is it possible the thermal sensor is broken? Is there a simple way to open the unit and replace this element?

  • Anonymous Apr 02, 2008

    I got a VX550 that was shutting down after 1 to 2 minutes of use. I took the red exhaust cover off and the black motor cover and hooked it up (not recommended for those wanting to live long and fruitful lives.) The motor ran for more than 20 minutes without overheating. Thus brushes and windings are fine. When I put it back together, same problem - very strange. I don't think it ran long enough to overheat! The normal cooling passages are not blocked. Any ideas?

  • tkirk Apr 13, 2008

    I have the same issue with my VX550. Started shutting off after prolonged use, now it won't run for more than 10 minutes at a whack. Very frustrating. I'm still within two year warranty so I'll probably take it to a service center.

  • aarbuckle1 May 23, 2008

    I just got off the phone with Nutone Customer Service for the exact problem you have described. They sounded like Nutone is having problems with this unit being in hot ambient areas of the house. They said to be sure the exhaust of the unit goes to the outside as the exhaust temperatures can reach 150 degrees. I have had my unit for 1.5 years and it only started cutting out a few weeks ago. We used it all last summer and the unit is mounted in a non-climate controlled garage. So I'm not sure if that is what the problem really is. I will try again after I pipe the exhaust to the outside.

  • elliot1956 May 24, 2008

    I was having the same problem.....after service replaced the motor it ran well for about 2 weeks and started overheating again. I brought it back to service and they (Nutone) replaced it with a brand new unit.



  • Anonymous May 28, 2008

    Please describe the specifics of your problem below. We'll add
    your post as a comment to kevel's nutone vx550 vac problem problem, and notify you when a new solution is offered.

  • Anonymous Jul 31, 2008

    Our vaccuum is doing the exact same thing as described above, frustration is mounting! Great to see we are not the only ones though.

  • Hollywood TC Aug 25, 2008

    We are having same problem with the VX 550 and after about a year of excellent service. Unit installed properly in an air conditioned room.



    Tom C

  • jeffpeterson Sep 07, 2008

    Having the same issue for a while now and the problem appears to get worse over time. Looks like I'll be calling Nutone to see what they will do for me.

  • gwhofman Oct 18, 2008

    The vac works for about 3 to 4 minutes and then shuts off. After a while, I can restart it, but again, it only works for a couple of minutes before shutting down

  • rcollette Nov 22, 2008

    I actually have the VX550, 1 year of service maybe, new bag and it's the same issue. I can use it on and off, maybe get through 3 rooms and then it overheats.


  • jacks5 Jan 25, 2009

    same thing! Has anyone had any luck finding the solution / getting support from Nutone? The nearest dealer is 2-hours away from me...

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The vacuum is defective, if you call Nutone and tell them the probelm, they will replace it for FREE, no charge to you. CALL 888-336-6151, that is the Nutone Tech Suport line.

Posted on Oct 14, 2008

  • Barb Netherton Nov 18, 2011

    Well I am glad they were so hopeful to you because I am having the same problem and they were useless. My unit is about 4 yrs old and they told me not original owner so warranty is no good. They discontinued the unit so no replacement parts are available so I have to get an entire new unit. never buying Nutone again!

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As one person said above. Its the motor. The motor gets to hot to fast causing the thermal protection to cut the motor off, and if you wait for a few minutes for it to cool down it will work again. I've done plenty of service calls for these, 100% the problem.

Posted on Feb 08, 2009

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I just got off the phone with Terry at Nutone (888.336.3948). He immediately identified symptons as a known problem with some VX550 models. They will send a new lower unit (the grey part at the bottom of the unit). No questions about how long we had the unit. Just asked for shipping address and asked that we destroy the old bin when we replace. Of note i contacted a couple of service centers and got less then enthusiastic responses

Posted on Aug 26, 2008

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My vx550 kept shutting off the breaker. Sometimes when I plugged it in it would run fine for a while, then shut off. Sometimes it would blow the breaker immediately when i plugged the power hose in. Finally we discovered that the vacuum requires a DESIGNATED BREAKER just for it, and the current must be 20 amps. My electrician insisted it was wired correctly, when in fact it was not. It was only when I had a factory authorized repairman and the electrician here at the same time (because each of them was blaming the other), and I had no idea about breakers, or amps, or whatever, that the problem was finally resolved. I hope this helps some of you...my problem lasted for probably 2 years, and it was AWFUL!!!!

Posted on Apr 29, 2010

  • Mark Smith Nov 03, 2010

    Careful, before you replace most "expert" vac shops can REPAIR those hoses. a repair is much cheaper than a replace.

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I called the support number posted by Hollywood TC and they are sending me a new unit that should arrive next week. Great service if it works. Vacuums are so simple though, the QA head at Nutone should be relieved. How do you not detect a problem like this when generally such products go through abuse testing before going to market.

Posted on Nov 25, 2008

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Many central vacs have a type of thermal limiting switch that senses an motor overheat condition and shuts it down until it cools off sufficiently for it to reset. Nutone calls it a 'Thermoprotector'. There may be an issue with the condition of the motor brushes and/or bearings that's causing the motor to overheat. If no LED is showing red or illuminated when it shuts down, this or microprocessor lockup could be the problem. Also, the thermal limit switch itself may possibly be malfunctioning. You'll need to have it professionally serviced if the shutdown is caused by a motor or microprocessor issue. Low line voltage can also cause microprocessor issues so you may want to start by using a voltmeter to check the voltage of the outlet where it plugs in to a standard 120VAC NEMA 5-20R receptacle. It should read at least 115VAC on the voltmeter but no more than 120VAC to prevent microprocessor damage.

You may also want to make sure that the debris bucket and/or direct door are fully closed or attached, especially if the lights on the unit, wall valve and hose are all lit red when it shuts down.

Posted on Mar 13, 2008

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NuTone has really stepped up to the plate to address a design flaw by one of their vendors when they introduced this product 3 years ago. They completely redesigned the power unit and fired a bunch of people. I talked to their new marketing guy, tom and he said that no one was fired, but they rearranged some people. He is a bright, friendly guy that seems to be cut from the same cloth as the technical service people. It's nice to speak to an english speaking person that actually lives in the U.S. Beam on the other hand has moved all their facilities to Mexico.

Posted on Aug 24, 2009

  • youdodgeit Feb 20, 2011

    Maybe you should move to England,but you maay still have a problem there since there are lots of punjabis (Indians).

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We had a Nutone VX550 Central Vac system installed in our new home built in 2007. Since then we have had to have the power unit replaced (it burned up) and now we have an issue with a flimsy piece of plastic that broke, it engages the cardboard gasket to the suction. My husband called Nutone directly after the first vac's power unit motor blew up and they sent a replacement directly to our home and he installed it. I have been notified by the warranty company that I have to drive and pick up the new replacement part and have to install it ourselves. Needless to say I am very concerned, my warranty is up next year and I am afraid I am going to be stuck paying for other troubles that obviously plague this power unit. I have spoken to 2 Customer Service Reps for Nutone and both times I have found it to be a less than enjoyable experience, they immediately were on the defense when I told them which unit I had put in my house, basically they take no responsibility for their poorly designed, poorly made central vac power unit. I have spoken to the local warranty people, who service these units and they have said that they are plagued with issues. I would not recommend purchasing this unit due to its poor quality and adversarial response from customer service.

Posted on Aug 16, 2010

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As stated above, this is a problem that Nutone is aware of and has corrected in the newer units. If you are within the 4-year warranty period, Nutone will send you a new unit. Even closing documents on a new home are proof enough. I was very impressed with how easy it was to get a new unit. This is a very responsive company that quickly and without hassle corrects the problem with a new unit that doesn't have this sensor problem. I am impressed and think this is a great product and a great company.

Posted on Jul 09, 2010

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In my system the trouble was actually in the hose connections by the handle, as a test twist the hose and see if it comes back on. if so replace hose

Posted on Nov 11, 2008

I will say Nutone was very helpful and completely resolved my issue by shipping a new unit and throwing in a few extras for my troubles. It's really refreshing to find a company that still values customer service. They've earned my business for future needs, not something i can say for most companies I've had problems with.

Posted on Oct 14, 2008

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First you would need your bill for any of the warranty work. The warranty is for 5 years on both the motor and the circuit board in the unit.
If you do not have a bill of sale for the warranty, my best advice, purchase a new motor (116472) as a replacement, and use a printed circuit board with leads on the circuit board.
Replacing the motor and circuit board should be approx 230$ canadian

Posted on Nov 03, 2010

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I have a nutone vx550 central vac system that keeps shutting off while using it. i replaced the bag and it still shuts down. help!

Posted on Sep 01, 2009

3 Suggested Answers

  • 1 Answer

SOURCE: Nutone central vac vx550

It's a known problem. I bought my vx550 last year in July and it stopped working this year in May. On for 5 minutes, shut down, can't run for a few hours, runs for another five minutes, etc. I called the Nutone customer service department and they exchanged the unit for a new one, cross shipped, via UPS. Mine was still under warranty though. It has to do with some defective thermostat or controller in the electronics of the vacuum.

Good luck

Posted on Sep 12, 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

  • 1 Answer

SOURCE: Nutone VX550 suction shuts off during normal use

NO SUCTION AT UNIT

Posted on Jan 29, 2011

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