Question about Broan-NuTone Allure III QS330SS Kitchen Hood

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Fan and lights come on and go off all day long on their own

Everything was working fine but all of a sudden the fan started coming 'on" on its own and runs and then shuts off on its own and this keeps happening continuously. The lights will do the same but not as often. They "blink" rather than staying on. When the fan comes on and runs I am not able to turn it off. It has a mind of its own. This has never happened before and started for no apparent reason.

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  • Anonymous Oct 24, 2008

    I have the same probleme

  • Greg
    Greg Dec 23, 2008

    Exactly the same problem. Nutone Allure WS2 model. Was hoping fuse replacement might help?

  • Glenda Fay Harris
    Glenda Fay Harris Feb 06, 2014

    that is my problem it blinks all the time for the blower

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We installed our Broan-Allure range hood about ten years ago. On three seperate occasions since, the fan has randomly turned on and none of the control buttons would turn it off. After a while it turns itself off. During those same times, when you turned the lights on, they would blink before finally staying on. On each occasion, I have removed the screens and metal underpieces to gain access to the circut board. Once you can see the circut board, remove and replace the 3 Amp fuse that is mounted on the board. (Radio Shack part # 270-1054)...even if the fuse looks good, replace it. Each time this has work for about three years, then it acts up again..

Posted on Aug 31, 2010

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Its definetly the electronic control board. I've repaired plenty.

Part # R111632
Price: $110.00
1-800-363-0566 Inventex Inc

Posted on Nov 06, 2008

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1 Answer

Dww061350b


if both fan and light have quit working then you have an electrical supply problem. start with checking for thrown breakers in the breaker panel. if none are tripped then you have a broken wire or a wire no longer making a good connection. try twisting the wire nuts tighter were it wires in above it

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Hi. Last Friday we had a new Kenmore stainless steel range hood installed along with a new range. Yesterday the range hood fan and lights would not work. The fan does not come on at any speed. The lights...


Some installers plug the fan/light into an outlet in the cupboard above. Check to see if that has power. Some of the outlets are behind a panel in the cabinet above and you have to remove the screws. I have seen the plugs laying in the cabinet just like they had never been plugged in. Yours obviously was plugged in but maybe fell out. If the fan/light is hard wired than you should make sure the power is turned off at the breaker box and then check the wiring inside the box to make sure it is wire nutted together and is holding. I would also check that the breaker for the fan/light is still putting out power. These last two might be a little tricky if you have never tried them. The breakers sometimes go bad but look like they are set. If the whole hood fan is not getting power it is probably time for an electrician or the people who installed to come back.

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Lights won't turn off - everything else works fine


I have a NuTone Allure WS2 range hood. The fan works fine, so does the control board seem ok, but the lights work only intermittently. NuTone tech support said to replace the control board, which I suspect is its kneejerk response. The board costs almost $200--and for two lights???

My problem is similar to the one whose lights work, fan doesn't, but I have a feeling my problem is different.I hope simpler.

Thanks in advance for help (light) on the problem anyone can offer.

Larry R

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1 Answer

I can switch on lights and fan, but then they switch off


It could be either. Usually i would say its the control board, but its very possible that its the transformer. I would start with that, the trans=25$ then control board = 110$
Its the small transformer (blue/yellow/black/white) wires coming out of it.

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Hi Mertl, I sure hope you found the solution since, but I am posting the answer for other people like me (and you) who need to find it !

The service manual says:

To replace the fuse:
1. Disconnect power at service entrance.
2. Remove filters, bottom panel, light wire harness, and air chute.

The fuse is actually right behind the fan controls, so to access it you need to disassemble everything that's in the way.

BTW, for anyone wondering if it's the fuse that's faulty, here's a clue:

If the fuse has opened (blown), the green fan-level indicators
will operate properly when the fan buttons/switches are pressed
- but the fan and lights will not turn on.

The fuse is a 5 x 20 mm, 10 Amp, Fast-Acting, 125V (min.).

Good luck all !

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Sounds like a motor problem...but not necessarily. Cut power to the unit. Expose the motor assembly. Turn the fan by hand...if it is jammed or hard to turn...replace that motor. Not that? There is likely a motor connector. Get a test light at the hardware store. Disconnect the motor and then probe the wires coming to the connector from the power side (with the power on again) to see if the tester glows. Yes...bad motor. No, find the bad connection. It is possible that this unit uses a multi switch...if that's the case, there will be three wires coming out of it...One is power in...the others go to the light and the fan. Then, the switch will be the culprit. Hope this helps.

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