Question about Broan-NuTone N-LS100SE Exhaust Fan Exhaust Fan

1 Answer

Bathroom Ventilation Fan Motor Failures

I have a Nutone LS-80SE ventilation fan in my bathroom. It is located above the shower, and installed as advised in the installation manual. Every year or so, the fan in this unit fails. Upon examination, the iron in the rotor becomes rusty. As the rust builds up, it eventually gets so thick that the rotor can no longer turn. If I clean the rotor, the motor will run again for a week or two, but the rust seems to grow even faster after the first build-up. Also, the ball bearings develop rust and I have not been able to locate replacements.

I assumed that this unit was intended for use in the damp locations. Before I go out an buy another motor, can you give me any advice. Perhaps in the long-run I should change the unit to one built by another manufacturer.

Scott

Posted by on

  • smorse Jan 29, 2009

    I thought of these things the first time the fan motor rusted. I have inspected the ductwork, which is a straight run about 30 inches to an outside wall mounted vent. We left the fan on at least two hours after a bath. The pipe was installed with a slight downward slope towards outside, permitting any condensed moisture in the pipe to drain out. I am using a 4" metal pipe. A neighbor who designs industrial ventilation systems suggested changing the pipe for it's entire length to 3" diameter. He says that while this will make the fan a little noisier, it will cause the water vapor to move faster in the exhast air stream. He also suggested removing the shutter louvers where the pipe exists the house, and replacing it with a 90 elbow, pointed down, and some 3/8 inch or 1/2 inch hardware mess to keep mice, etc. out of the pipe.

×

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Contributor
  • 37 Answers

I'm guessing that water isn't splashing up on this fan's motor, so the moisture that is causing the rust must be water vapor. The exact same water vapor that the fan is supposed to be removing. I have two suggestions before replacing the entire fan. One is to make sure that the ducting that carries the moist air out of the bathroom (and preferably out of the house altogether) is free of obstructions and that the fan can actually do it's job. Second is to actually run the fan, and run it a lot longer than you probably are right now. If it is running while you are in the shower and then you turn it off after you leave the bathroom, it can't possibly be removing that moisture. I'd invest in a countdown type timer and replace the existing switch with that. Set that thing for 30 or 60 minutes when you get in the shower and let it turn it off automatically.

Posted on Jan 29, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Can I connect two bathroom fan ducts to a single roof vent?


No, both cannot be connected to same vent.
Or vent exhause from 1 fan will vent into other bathroom.
All house vents require separate duct.

Nov 26, 2014 | Broan-NuTone Fan,Bathroom Exhaust Broan...

1 Answer

I need a replacement motor for a NuTone Model LS-80SE exhaust fan but can't find one.


Home depot usually has a good selection of replacement fans. They usually are a fan on a mounting plate, not just the fan motor itself. Sometimes you have to purchase the entire fan unit just to get the fan motor plate inside for a replacement part.

Feb 23, 2011 | Broan-NuTone N-LS100SE Exhaust Fan Exhaust...

5 Answers

Problems with exhaust fan NuTone Model LS 100SE


Hello,
The fan/motor part of the Broan fan is replaceable. They are actually very simple to take out and install a new part.

The part can be easily purchase here...

http://parts.broan-nutone.com/broan/Shop

Heatman101

Feb 27, 2010 | Broan-NuTone N-LS100SE Exhaust Fan Exhaust...

1 Answer

Broan ventilation fan not working


Does it start before the mark as you turn it if so replace the switch. power off first and check with a meter.

Jan 28, 2010 | Broan-NuTone NuTone Ultra Silent...

2 Answers

NuTone bathroom fan starts slowly after being off awhile


need to blow it out with a air hose and oil it real good! but keep a eye on it to make sure it does not get hot! if it feels hot to touch replace the motor!

Nov 03, 2009 | Broan-NuTone (668RP) Fan

1 Answer

The Fan in my Nutone bathroom light/fan is not working...


It is really easy to change the motor yourself. It is about a 15 minute job. You just need to find your model number and then you can buy the complete motor assembly. https://www.centralvacuumstores.com/model_number_help.php

Mar 28, 2009 | Broan-NuTone N-8663RP Combination Light...

1 Answer

NuTone 9093 Heat-A-Ventlite: Ventilation not working


My guess it will be the motor.That would be the first thing I would do is replace it.

Mar 13, 2009 | Broan-NuTone N-9093CH Combination Heater...

1 Answer

Bathroom fan


You'll be able to access the motor to service it and the wiring junction box from inside the bathroom. Please rate this answer if it was at all helpful.

Jan 31, 2009 | Broan-NuTone Designer 721 Ceiling Fan

Not finding what you are looking for?
Broan-NuTone N-LS100SE Exhaust Fan Exhaust Fan Logo

792 people viewed this question

Ask a Question

Usually answered in minutes!

Top Broan-NuTone Dryers Experts

Havn Fun Here
Havn Fun Here

Level 2 Expert

57 Answers

Mike Squire

Level 2 Expert

391 Answers

Craig Dupler

Level 1 Expert

17 Answers

Are you a Broan-NuTone Dryer Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...