Question about Broan-NuTone Allure III QS330SS Kitchen Hood

3 Answers

Random fan speeds and light levels???

When in operation my Allure III range hood fan will sometimes "toggle" between the selected fan speed and the next/higher fan speed. In addition to this sometimes the light intensity will "toggle" from the selected level to the next/lower light level. This is quite a sight when this starts in the midst of cooking and the fan and the lights start toggling all together. It's like having a ghost in the thing. I have found that by selecting the highest fan speed "B" and the highest light level the toggling will stop.

On rare ocations the light level will toggle if the range lights are left on without the fan in operation, however I,ve only experiance this a couple of times, unlike the previous issue which happens about 25 to 30% of the time the the range hood is used.

I'm thinking that the issue may be related to the "Heat Sentry System" feature of this range hood, however i'm not 100% sure of that. The control assembly (part # R111653) most likely either needs to be completely replaced or and least have some circuit level trouble shooting done and some components replaced.

Would anyone have a solution to this issue or a schematice for the controler assembly (# R111653).



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  • mrieser Feb 18, 2008

    I have had a Braun QS3 Range hood since they first came out and it has been nothing but trouble. First it stopped working within the guarantee, so they sent someone out who added a new circuit board to the existing board. Then after the warranty expired, they want $163.88 to replace the board (Part # r111653). The board still works if I open it up and pull it down a bit, but normally the lights and the fan don't work until the stove heats up to a certain temperature, exactly what temperature that is I can't say.

    I have called Braun tech support over the years and they basically say that this happens if you don't ALWAYS use the fan when you are using the stove. Moisture gets up into the board, etc. Sounds like a design flaw to me!

  • Anonymous Sep 03, 2008

    My hood fan does the same thing. I will buy a new unit before spending money on a new circuit board for this piece of ****.

  • sco1590 May 25, 2009

    Just installed a Broan Allure QS 236SS. The fan will not turn off. The fan came on as soon as I turned the power on. Pressing the fan speed buttons 2 and 3 trun up the fan speed. The fan seems to be running on speed 1. Nothing I do turns the fan off. The lights work properly.



3 Answers

I have the same problem for this piece of ****. Everytime we use the stove without the fan, the lights start turning on and off, even if we haven't turned the lights on.

Posted on Oct 07, 2008

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  • 38 Answers


I do guarantee work for Broan & Nutone on the road. The problem with all three of your kitchen fans is the control board which is $110.00 part # R111632 for allure 3. If ever, im in Montreal,qc 1-800-363-0566 = Inventex


Posted on May 14, 2008


I have the same issue. Have to reset the breaker to make it stop. Bet it is a bad controller (design fault).

Posted on Jan 09, 2008

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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 !

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The Problem is the wiring. Take the 2 screws retaining the metal plaque off underneath the filters. You will see the wires leaving the motor going into a "molex" plastic connector which connects two another set of wires going to the control board. Check to see if the wiring colors match from side to side of plastic connector. Ive only seen it happen once but it was exactly that. I do service calls for broan & Nutone


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