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Old 02-23-2014, 11:47 AM   #1
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Unhappy buzzing noise

Our newly purchased 2000 Country Coach Magna Millenium has a constant buzz or humming sound coming from the roof(which we can't get to because it doesn't have a ladder until we buy one!)It is the loudest sound a couple feet behind the AC ceiling vent. It is especially irrating when the TV isn't on! Any ideas of what that could be before we have to start wearing earplugs?
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Old 02-23-2014, 12:48 PM   #2
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Hi harelmover,
Welcome to iRV2. Is the noise all the time or just when the unit is running?
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Old 02-23-2014, 01:31 PM   #3
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buzzing noise

I'm not sure I'm doing this right so I hope this gets back to you,Gary. The noise is all the time
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Old 02-23-2014, 02:03 PM   #4
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If it is comming from the roof there are basically two or 3 candidates

1: Camco solar powered fridge fan replacement fridge flue cap (I plan on getting one of those) something hitting fan blades, NOTE this one will stop buzzing at night.

2: Air conditioner with a problem

3: Bees' nest
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Old 02-23-2014, 02:12 PM   #5
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Can you borrow a ladder to get up on the roof? I hink you need to isolate exactly whats causing the noise.
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Old 02-23-2014, 02:14 PM   #6
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Exhaust fan running?
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Old 02-23-2014, 02:20 PM   #7
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Bees or wasp nests do make a sound...

With all power off, if you still hear it - could tell you that you are now the potential center of the next pod attack!

Good luck, and please let us know root cause,
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Old 02-23-2014, 03:16 PM   #8
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Hi harelmover,
Somebody needs to get on the roof and isolate the noise. Because the coach is new to you, you do not know what the previous owner put on the roof. With the HVAC off, I know of no power to the roof units therefore no noise. If it is not the HVAC unit then it is an after market device of some kind.
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Old 02-23-2014, 03:24 PM   #9
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Welcome to irv2. Hope you find that noise. Please update us when you do.

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Old 02-23-2014, 05:18 PM   #10
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Which AC vent the one in the front of the coach or the one in the back in the bedroom. If it is in the back see if the noise is coming from an electrical outlet probably a GFI. I had one and it took some time to track it down and that was what it was. The buzz is caused by a modified sine wave inverter and the GFI. See the post under Country Coach owners forum at this site also entitled Buzzzzzzz. It only makes the noise when the inverter is on.
Good Luck
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Old 02-23-2014, 06:54 PM   #11
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Do you have an in motion satellite dish on the roof? If so find the switch to turn the in motion off.
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Old 02-24-2014, 02:56 PM   #12
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buzzing noise

Thanks for all the response and suggestions. We wil find a ladder tall enough and see exactly where this annoying buzz is coming from and let you all know what we find out at sometime in the near future. Definitely not a bee's nest! Thanks again
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Old 02-25-2014, 07:56 AM   #13
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Turn all of your breakers off then turn them on one at a time until the buzzing starts. That will help until you can get on the roof.

It has been alluded to and you never specifically mentioned it but, it does not buzz when the power is off right?
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