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Old 09-12-2016, 11:46 PM   #1
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Humming sound

Rear bedroom humming sound 35k bounder; any thoughts what it's from?
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Old 09-12-2016, 11:53 PM   #2
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Transfer relay switches are known to hum . . . .
Ed & Lynn on the Oregon Coast
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Old 09-13-2016, 10:50 AM   #3
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Ditto for converters.
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Old 09-13-2016, 12:49 PM   #4
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I recently discovered the transfer relay behind what looked like a heat vent in the bedroom of my '05 32w Bounder. Mine doesn't hum, but if it did it would be well positioned to be heard. Take a flashlight and see if your heat vent is really just a cover over the hole leading to your transfer relay.

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Old 09-13-2016, 01:38 PM   #5
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Originally Posted by Ltchall09 View Post
Rear bedroom humming sound 35k bounder; any thoughts what it's from?
You may want to tell everyone if you hear this humming all the time or just when you are plugged in. If only when plugged in then your mystery is most likely solved above.
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Old 09-13-2016, 10:32 PM   #6
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Water pump?
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