Reply
 
Thread Tools Search this Thread Display Modes
 
Old 06-27-2017, 12:54 AM   #1
4 Rivet Member

 
2016 26' Flying Cloud
Southlake , Texas
Join Date: Jul 2015
Posts: 262
Noisy a/c now quiet

I had both a/c units replaced last Fall under warranty. After the replacement, the rear a/c has had a loud droning noise when the compressor is running. I finally decided to investigate. Got up on roof and removed cover-everything looked good. The noise seemed to be coming from the rear of the unit and when feeling around the bottom of the unit, the noise went away. There is not much clearance between the roof and the bottom of the a/c and in one place the roof was bowed up just enough to touch the bottom of the a/c. I has some foam tape with adhesive on both sides that was a good fit. Pushed down on the roof and inserted the foam. A/C is now much quieter.

I like it when the fix is easy and not expensive!
__________________

__________________
2016 Flying Cloud 26u
2017 Silverado Duramax 4x4
Equalizer Hitch
Southlake, TX
WBCCI
Bgibbs is offline   Reply With Quote
Old 06-27-2017, 06:43 AM   #2
Rivet Master
 
SeaLevel's Avatar
 
2016 25' Flying Cloud
Jupiter , Florida
Join Date: Nov 2015
Posts: 714
Good troubleshooting, and thanks for sharing. I agree, it's nice when the fix is easy and inexpensive.
__________________

__________________
"A good traveler has no fixed plans, and is not intent on arriving." - Lao Tzu
SeaLevel is offline   Reply With Quote
Old 10-15-2017, 12:11 PM   #3
4 Rivet Member

 
2016 26' Flying Cloud
Southlake , Texas
Join Date: Jul 2015
Posts: 262
Well, the fix was not long term. The foam was too soft and as it compressed, the noise came back. I have some 1" backer rod and I used it instead of the foam. It helped for a few weeks, but it has now compressed and the noise is back. Anything to look for regarding the compressor? The front a/c changes sound very little when the compressor comes on, but there is a big difference with the rear a/c. Can compressors be out of balance? I'm going to take the cover off again to see if I missed something.
FYI, both a/c's were replaced last winter under warranty.
__________________
2016 Flying Cloud 26u
2017 Silverado Duramax 4x4
Equalizer Hitch
Southlake, TX
WBCCI
Bgibbs is offline   Reply With Quote
Old 10-16-2017, 11:00 PM   #4
cwf
Rivet Master
 
cwf's Avatar
 
1999 34' Excella
Currently Looking...
Hillsboro , Texas
Join Date: Feb 2013
Posts: 5,914
Images: 2
On our AC's I installed a wide foam strip made from the same "mount gasket" material. It supports the rear of the AC so no direct frame roof contact.
__________________
Peace and Blessings..
Channing
WBCCI# 30676
cwf is offline   Reply With Quote
Old 10-17-2017, 10:55 AM   #5
4 Rivet Member

 
2016 26' Flying Cloud
Southlake , Texas
Join Date: Jul 2015
Posts: 262
Thank you for the reply. Ours is quieter with the 1" backer rod wedged under the rear of the unit. I plan on taking the cover off the unit to see if anything is loose or out of position. On the front a/c, you can barely tell when the compressor turns on. There's got to be something that is different.
I am making some supports to put on the roof so I can move around more freely. I have some slats that we took out of a bed we no longer use that are connected by plastic strapping. I plan to cut them in half, lay a furniture pad on the roof and then lay the slats on top.
__________________
2016 Flying Cloud 26u
2017 Silverado Duramax 4x4
Equalizer Hitch
Southlake, TX
WBCCI
Bgibbs is offline   Reply With Quote
Old 10-19-2017, 09:17 PM   #6
4 Rivet Member

 
2016 26' Flying Cloud
Southlake , Texas
Join Date: Jul 2015
Posts: 262
Took the cover off today and found that if I applied a little pressure the the high side line, it got quieter. I took the clamp support loose and tweaked the line a little. That seemed to quieter it down a little. We'll see. Looking online I found a Dometic anti vibration kit that has a couple of dampers that go around the line. My unit has one on it but not on the line that was vibrating. Has anyone used these? The kit also has some softer compressor mounts.
__________________
2016 Flying Cloud 26u
2017 Silverado Duramax 4x4
Equalizer Hitch
Southlake, TX
WBCCI
Bgibbs is offline   Reply With Quote
Old 10-23-2017, 10:48 PM   #7
cwf
Rivet Master
 
cwf's Avatar
 
1999 34' Excella
Currently Looking...
Hillsboro , Texas
Join Date: Feb 2013
Posts: 5,914
Images: 2
I was thinking a Toroid snapped around the tubing.. a small
Piece of fuel line would eliminate most chafing I the AC tubing...anything to change the harmonic..
__________________

__________________
Peace and Blessings..
Channing
WBCCI# 30676
cwf is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Newer Dometic AC is one noisy bugger, any ideas to quiet it down? aquinob Furnaces, Heaters, Fireplaces & Air Conditioning 32 07-22-2015 09:59 AM
Quiet Generator Tin Can Generators & Solar Power 5 12-06-2005 05:58 PM
Seeking a QUIET inverter... platbr Electrical - Systems, Generators, Batteries & Solar 8 10-04-2005 05:59 PM
Ebay quiet Happycampers Off Topic Forum 3 06-27-2004 10:23 AM
Quiet part of the Community??? GT1963 The Pet Forum 2 01-28-2004 09:16 AM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 01:14 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.