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Old 01-16-2013, 07:15 AM   #1
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Trane Furnace XV80 making tumping noise


Hello all,
I have a Trane XV80 furnace, around 5 years old. The problem, when the furnace is cycling down or shutting off after hitting the desired temp there is a thumping sound coming out of the unit. I pulled the front cover off but that’s it. It’s coming from the inside the unit so its not the duct work. I have uploaded a short video to photo bucket if you have time to look. There is a fan on the front of the unit with a R2 label on it, it shuts off before the sound starts. Any idea what could be causing the sound?
Thanks for your help,
Mark

http://s1339.beta.photobucket.com/us...1c4c3.mp4.html


Last edited by mwcassedy; 01-16-2013 at 07:36 AM.
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Old 01-16-2013, 07:38 AM   #2
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Trane Furnace XV80 making tumping noise


the link to photobucket was wrong, please try this one.

http://s1339.beta.photobucket.com/us...1c4c3.mp4.html

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Old 01-16-2013, 07:57 AM   #3
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Trane Furnace XV80 making tumping noise


I hear this now and then. In my case it's the air filter after the blower stops. It must get moved up with airflow and once the airflow stops it drops causing a thumping noise.
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Old 01-16-2013, 08:14 AM   #4
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Trane Furnace XV80 making tumping noise


Thanks for your reply jvegas. I think we have different issues, my noise is a repetitive thumping that lasts for 60 seconds and sounds like an off balance wheel spinning/banging or a fast firing automatic machine gun. Not the same sound but repetitive until the unit completely shuts off. You can hear the sound on the photobucket viedo I posted.
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Old 01-16-2013, 09:39 AM   #5
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Trane Furnace XV80 making tumping noise


You mean that video that last about 4 seconds?
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Old 01-16-2013, 09:56 AM   #6
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Trane Furnace XV80 making tumping noise


Thanks for your response, your comment was less than usefull. The length of the video is dictated by the number of MB they allow. You can hear the sound, despite the short video.
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Old 01-16-2013, 10:32 AM   #7
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Trane Furnace XV80 making tumping noise


Quote:
Originally Posted by mwcassedy View Post
Thanks for your reply jvegas. I think we have different issues, my noise is a repetitive thumping that lasts for 60 seconds and sounds like an off balance wheel spinning/banging or a fast firing automatic machine gun. Not the same sound but repetitive until the unit completely shuts off. You can hear the sound on the photobucket viedo I posted.
Try to rotate the squirrel cage by hand and feel for anything but smooth. Of COURSE, turn off the power first.
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Old 01-16-2013, 01:10 PM   #8
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Trane Furnace XV80 making tumping noise


Thank you for your response, I will pull the cover and see what presents itself.
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Old 01-16-2013, 06:24 PM   #9
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Trane Furnace XV80 making tumping noise


Sounds like the wheel inside the inducer is warped.
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Old 01-17-2013, 06:34 AM   #10
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Trane Furnace XV80 making tumping noise


Thank you for your response, I will see if that is it.

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