Question about Broan-NuTone 643604 Kitchen Hood

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A bird is now trapped in the exhaust fan. We hear it flapping.

We can hear the bird inside the house and close to duct work.  Is there an easy way to take out parts of the fan to get to the bird.  We have a Broan 36 inch hood 643604.
Thanks,
Doug

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6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya Repairman can help you resolve that issue over the phone in a minute or two.
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Posted on Jan 02, 2017

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SOURCE: Damper need for Broan Range Hood

I called tech support at Broan and was told they recommend two dampers in cold climates ...one at in the wall cap and one on the unit. They make the damper,
(#BP87-7"), that attaches to the round duct plate that comes with the hood. Strangely the unit does not include a round damper and the seller LOWES did not have it, also checked Home Depot,.
The Tech said they can't get stores to stock it. I checked at a local supplier of all kinds of plumbing, heating, and cooling supplies and they only had basic 7" dampers which, I was told would probably be too heavy, and be manual. I ordered it through Amazon/True Value ($11.56 w/ shipping, shipping more than cost of damper). Tech indicated that the 2nd (unit damper) is optional and may not be needed if in a warm climate. I would suggest that Broan include the $5.00 item in their unit or at least sellers stock it.

Posted on Jun 28, 2008

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SOURCE: Jenn-Air Downdraft ducting roof Rack w/flapper

Hi Snowflow,

I'm Harvey the Master Plumber.

Your problem is: You are looking for a high quality roof mounted termination vent cap for 8" O.D. round ducting for your Jenn-Air downdraft Stove Top/Convection oven. The reason for the 8" ducting is that you are using insulated stove piping out of the wall of the house into a cold porch then up through the roof. You have come across a Broan Vent Cap that will accommodate 3-1/2" by 10" rectangular ducting and/or 8" O.D. round ducting. The problem with this Broan unit is it has an aluminum flapper that has no counter resistance mechanism to keep from readily flapping open and shut during weather related wind events. Is there something better out there? You found us through a Jenn-Air link. Help!

An 8" B-vent cap should work fine. Can be purchased at any plumbing supply. Just make sure you attach it with screws.

Feel free contact me again!
Please give me a rating here at fixya.com before you sign off
Thank you,
Harvey your Master Plumber

Posted on Oct 14, 2008

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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.

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Kenmore dryer 11069622800


It might be a dead animal in the dryer duct that vents the hot air outside. Sparrows are notorious for building nest in dryer and air ducts that are elevated several feet off the ground. Don't know how the smart little birds figured it out, but they are able to lift the outside flap and get inside. If your outside vent is located several feet up I would check for a nest. If it is close to the ground, then it might be a 4 legged critter that crawled inside and died. It is impossible to see into the vent, so take a cell phone with a camera and flash, or a small digital camera and slide it under the flap / damper to take a few pictures of the inside of the duct. If you do happen to have something in the duct, and it runs for some distance inside the wall, then it might take a company like Servpro to come out and clean the duct out.

Apr 26, 2014 | Kenmore Dryers

1 Answer

Dryer not dry clothes


Looks like you may have an air flow restriction. First thing to check would be the lint screen. If that is clean, check your outside exhaust hood and make sure that the exhaust flap is not stuck closed, have excessive lint build up on the external screen (If Equipped) or, if birds are trying to build a nest in the exhaust hood opening. I see that quite often. But if that isn't the case, your duct work going between the drier and the exhaust hood is clogged and needs to be cleaned out. Hope this helps.

Mar 10, 2014 | GE DBSR453EBWW Electric Dryer

1 Answer

My quiet bathroom fan makes a roaring noise


The roaring noise is probably the fan blades (looks like a hamster wheel) are worn out as it rotates on the spindle/shaft.

It may be a problem with the 4" exhaust ducting, that connects to the exit part of the fan, has come loose. Theres a damper (kinda like a flapper) at the fan/ducting joint may have broken off and may be sitting sideways in the ducting flapping around inside the duct.

At any rate I highly doubt its wiring. Sounds like its time to pull the fan cover off (turn the power off first via the wall switch or the service panel breaker would be even better) and look at the fan blades. Clean off any dust bunnies, lint, etc. and turn the fan back on. Did the noise stop?

If nothing looks out of place and it still makes noise you'll have to get in the attic and remove the ducting from the fan and see if theres a problem at the connection there. Maybe a squirrel put its bedding in the ducting? It happens.

Could be lots of reasons for the noise but wiring it wrong wouldn't cause roaring. The fan wouldn't work, or worst burn up, if wiring was the issue. The problem is the more than likely the fan blade assy is worn out or something is restricting the air flow in the ducting going to the outside of the house.

Nov 19, 2012 | Panasonic WhisperCeiling Bathroom Fan...

1 Answer

I have 80 bath exhaust fans in the hotel that I maintain. There is a loud dripping noise coming from a few of them but no sign of water at the top housing (from attic). I contacted a "professional" and...


I would expect that each fan has it's own damper right there at the fan. Otherwise, one room's fan would blow another with which it shares ductwork. I have stayed in hotel rooms where cigarette smoke came into my room through my exhaust fan unless I ran my fan. So, why would some of the dampers tend to flap? You'll have to take a look. Maybe they have counterweights or springs to hold them closed. Maybe they are missing or adjustable. Maybe the problem only exists when the guest has their windows open - which could cause the dampers to flap in the changing breezes.

May 24, 2010 | Home

1 Answer

I have a older Whirpool limited edition side by side refrigerator and it is noisy. Sounds like a bird is trapped inside. Sometimes the sound is every few minutes and sometimes we don't hear it for hours.


Good day,
What you described is very typical of the fan motor behind the freezer back panel going bad.
Remove the back panel, and you will see the fan motor.
Takes only the minimum tools including a socket set, to replace.
All decent sized appliance parts houses will carry the motor.

Thank you for using FixYa

Jan 10, 2010 | Refrigerators

1 Answer

The dryer is overheating.


Fresh air is drawn in past the heating element into the drum out through the lint trap and exhausted outside the building. If the dryer protection systems are operating properly they will sense the over temperature and shut off power to the heating element via thermal switches. This will cause the elements to cycle on and off and reduce the drying ability.

Things to check.

First make sure you fill the dryer only about half full of clothes, usually the dryer capacity is around twice the washer capacity for this reason.

Second, make sure your lint trap and exhaust duct work from inside the dryer all the way outside are free from lint build-up. You should clean or have the dryer duct work cleaned either every year or two depending on the amount of drying you do.

Third, suspect is the dryer thermostat stuck in the on position. You may be able to test your drying temperatures by selecting (cold) fluff air setting, then the low setting and so on to see if that's working properly. If you can read electrical drawings, usually the manufacturer includes a diagram inside the control panel for service techs to refer to. You can test the flow of air out of the dryer by removing the hose from the exhaust, it should have a good volume of air when the dryer is running. After hooking the hose back to the exhaust duct work, check outside the building for the same air flow and don't forget to clean any outside flaps that keep the rodents out of the duct work.

Keep your lint low by not over drying your clothes. You will cut down on lint and prolong the life of your clothes! Dryers are one of the simplist appliances to figure out, unless they have complicated electronic control panels.

Good luck!

Jul 28, 2009 | Maytag PYE2300AY Electric Dryer

1 Answer

My tumble dryer works ok but theres no heat been told i need a new thermostat but cant find one with my model number


Non-Specific answer - no dryer model given
The thermostat is likely not at fault,
there is on the exhaust duct of most dryers a thermal protector, thermal cutout, thermal fuse (and a half dozen other names for the same thing)
If the air temperature becomes too hot due to blocked exhaust ducts, lint in the fan, lint screen not emptied or someone opened the door in the middle of the cycle then closed it again. the device fails to protect the much more expensive heater coil and thermostat.
Trace the exhaust duct from the fan housing for a device that looks like this 07b92b9.jpg or this fd3277a.jpg with wires to the terminals.
Test with an ohmmeter or bulb and battery, conducts ok no conduct replace.
take the dud one to the local parts store,
there are very few thermal cutouts, common to many dryers, they will be in stock. and cost very little.
While the dryer is apart, is a good time to clear lint from exhaust hood, ducting, fan, fan housing, to prevent recurrence

Sep 08, 2008 | Dryers

3 Answers

Noise of microwave exhaust fan


You can remove the exhaust turbine unit with one screw and reinstall microwave and buy a braun external exhaust unit that fits over the hole where it is at the roof or wall and all of the noise will be outside and it will actually work. It is weather proof and will **** steam or fumes out like the best vacuum cleaner.

Mar 25, 2008 | Microwave Ovens

2 Answers

Kenmore Elite HE4-lots of heat, clothes not drying


Poor drying problems with dryers generally are attributed to clogged ducting. You have probably heard this before, but the first (and least expensive) fix for any dryer with long dry times is to check the air movement. As well know, dryers require good air flow to ensure proper drying. Now, when you said the air movement is strong, were you checking it at the air vent exhaust outside, or were you checking on the back of the dryer? An easy way to tell if there's a clog in the ducting, or a clog in the dryer is to run one load with the dryer vent disconnected from the back of the machine. Only run one load like this. Not a good idea to blow hot moist air into an enclosed area of your home over a period of time because it can cause mildew problems. If the dryer blows freely and your clothes dry faster, you know you need to check the ducting from where it connects to the wall to where it ends at the exhaust vent. Often it is not enough to just clean the lint trap and the outside vent. You need to check what's in between them as well. Mice and birds are notorious for building nests in dryer vents and clogging them up. Now...if the dryer is blowing poorly at the exhaust port on the back of the dryer, you will need to remove the door kick panel under the door and remove the vent duct housing to get to the blower fan. Make sure you unplug the dryer before attempting this. There are live voltages present even with the dryer turned off. Lint can get trapped in vent housing and restrict the movement of the fan, which, in turn, will cause poor air movement and longer dry times. Last of all, take a temperature reading at the exhaust port on the back of the dryer. A good temperature reading is roughly 140 degrees F. If the temperature is too low, you may have an operating thermostat or high limit thermostat malfunctioning. Check your vent ducting, first and let me know if you need further assistance. I hope this helps you.

Aug 04, 2007 | Kenmore Elite HE4 Electric Dryer

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