Question about Broan-NuTone CV450 Central Bagged Central System Vacuum

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My cv450 nutune wont shut off, I have to pull the power switch

Is it the relay something else

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It should be the relay and that is very easy to change out yourself.

Posted on Feb 13, 2009

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Our cv450 wont turn on when plugging into the wall or using the rocker switch on the unit, there is power to the outlet, the unit is 12 years old,any suggestions to further diagnose?


Check the filter. If it's dirty, the motor will overheat, resulting in the machine shutting off.
Rinse thoroughly in warm water, and allow to air dry thoroughly before reinstalling. I recommend having two filters so you have one to use while the other is drying.
Other problems are possible, but generally entail taking the vacuum to a repair shop for diagnosis and repair.

Feb 12, 2011 | Broan-NuTone CV450 Central Bagged Central...

1 Answer

Will not turn off when hose is pulled out of wall


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.

Jan 26, 2010 | Broan-NuTone CV450 Central Bagged Central...

1 Answer

My nutone vacuum system won't shut off when I pull the hose out of the wall...any thoughts


The relay that turns the machine off from any of the several places where you connect, is probably stuck.

The relay is operated by low voltage. When you connect your hose, you comlete the low voltage circuit and energize the 110 volt system, and the machine comes on. When you pull the hose out, the relay is suppose to release.

those are my thoughts

I hope this is of value to you.

a

Sep 27, 2009 | Broan-NuTone CV450 Central Bagged Central...

2 Answers

I need a relay board for a Nutone CV 450 12.6 amp dual motor vacumn unit. Where can I locate one? Part #??? Unit will run by itself, then shut off. Unit wll not run at all. It has a mind of its own....


Unfortunately I don't have a part number for you, but you can call this number 1800.322.2965. Tell them you need a new relay board for your system and they'll be able to help you. They cost around 99$. for anything else you might need, go to www.thinkvacuums.com

Sep 01, 2009 | Broan-NuTone CV450 Central Bagged Central...

2 Answers

Vacuum won't shut off


the relay is most likely the problem, they get burnt and the contacts stay together leaving the unit on. Try www.builtinvacuum.com for parts.

Aug 20, 2009 | Broan-NuTone CV450 Central Bagged Central...

1 Answer

My nutone cv556 wont shut off


It sounds like the relay is bad. This website has a pretty good trouble shooting page.

https://www.centralvacuumstores.com/cvs/trouble_help.php#wont_turn_on

Sep 28, 2008 | Broan-NuTone CV450 Central Bagged Central...

2 Answers

Unit will not turn on


Unplug the vacuum unit from the wall. If it is hard wired turn off the circuit breaker

Jul 30, 2008 | Broan-NuTone CV450 Central Bagged Central...

2 Answers

Nutone CV 450


If the top comes off, it will be by the motor and exhaust. Just replace it with the new one, make sure you don't mix up any wires. Also unplug it from the AC first.

Jun 22, 2008 | Broan-NuTone CV450 Central Bagged Central...

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