|
07-11-2019, 08:00 PM
|
#1
|
Seasoned Camper
Join Date: May 2018
Location: Amarillo
Posts: 64
M.O.C. #21742
|
Strang Electrical hum
We have a 2018 3560RL Montana and we can hear a low hum when we stand by the stairs. That is right next to the breaker box and switches in the cabinet above.
We can power down the frig and turn off the battery disconnect and still hear it.
I thought it might be an inverter because we don't always hear the sound.
where would the inverter be installed and could the sound be from something else?
Anyone experience this.
Knapper
|
|
|
07-11-2019, 08:04 PM
|
#2
|
Site Team
Join Date: Oct 2005
Location: Carmichael - CA
Posts: 7,364
M.O.C. #4831
|
Your model (3560RL) indicated you don't have a residential refer so you don't have an inverter. But what you do have is a converter as part of the fuse panel. It has fans and can make noise. Pop the door on the panel and check if if that is what you are hearing.
__________________
Carl (n Susan)
There is more to life than fuel mileage.
2012 Montana 3700RL Big Sky Package towed by a 2015 Ford F350 6.7L PSD 4WD CC LWB
|
|
|
07-11-2019, 08:04 PM
|
#3
|
Site Team
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
|
You will only have an inverter if you have a residential frig or have installed it yourself. The converter on the newer rigs is usually under the breaker box.
__________________
Dick, Joyce, Diego, Picatso and Gustav
2017 3720 RL, and 2013 HC 343RL
Pullrite Hitch, IS, Disk Brakes, 3rd AC, Winegard Traveler, Bathroom door mod, Dometic 320, couch for desk swap, replaced chairs, sun screens, added awnings, etc.
|
|
|
07-11-2019, 08:35 PM
|
#4
|
Seasoned Camper
Join Date: May 2018
Location: Amarillo
Posts: 64
M.O.C. #21742
|
Thanks that is what it has to be. We have opened the door on thebreaker box but it wasn't apparent to us that the sound was coming from that area. Thanks for the help and the next time I will recruit someone with young ears.
Knapper
|
|
|
07-11-2019, 10:36 PM
|
#5
|
Montana Master
Join Date: Aug 2018
Location: Minden - NV
Posts: 501
M.O.C. #22360
|
Do you have the generator prep or generator? The ATS is located on the back of the stair. The contactors in the ATS make a low level humming sound.
__________________
2013 F350 Lariat Ultimate CC LB
2019 3790RD
|
|
|
07-11-2019, 10:36 PM
|
#6
|
Montana Master
Join Date: Apr 2006
Location: Mesa az
Posts: 2,952
M.O.C. #5651
|
Try listening to the hum while turning on 12V light switches one at a time. I can hear the hum as each light that goes on makes the hum louder/faster. My understanding is the fan on the converter is a variable speed fan, so it does change speeds.
__________________
Tom and Gail
2013 Mountaineer 362
2012 Silverado 2500
|
|
|
07-11-2019, 11:07 PM
|
#7
|
Montana Master
Join Date: Oct 2012
Location: Box Elder
Posts: 4,697
M.O.C. #12947
|
One of the 120 volt breakers in the panel will be for the converter. When you can hear the hum, turn off the converter breaker and the hum should stop.
__________________
Bob & Becky
2012 3402RL
2012 Chevy 2500HD D/A CC 4WD
|
|
|
07-12-2019, 01:38 AM
|
#8
|
Established Member
Join Date: Sep 2018
Location: Gardner
Posts: 33
M.O.C. #22623
|
I concur that the hum is from the converter fan. On our 2007 and 2010 3400RLs, the coverter is under the stairs, not behind the electrical panel, so the hum comes from the stairs. And yes, turning on fewer or more lights changes the hum sound.
__________________
Bill Price
2013 3100RL
2007 Ford F350 diesel
|
|
|
07-12-2019, 09:40 AM
|
#9
|
Montana Master
Join Date: Aug 2018
Location: Minden - NV
Posts: 501
M.O.C. #22360
|
I just went out to the trailer and I have a very small hum from the transformer in the converter when I flipped the breaker on. I usually keep it off cause my solar keeps the batteries charged. However, the coils in the genset/shore ATS produce a much louder hum. So there's the two sources. My second 50amp ATS between my inverter and main panel is a lot quieter or it's overpowered by the main ATS noise.
__________________
2013 F350 Lariat Ultimate CC LB
2019 3790RD
|
|
|
07-15-2019, 02:59 PM
|
#10
|
Seasoned Camper
Join Date: May 2018
Location: Amarillo
Posts: 64
M.O.C. #21742
|
I did confirm that the hum is coming from the ATS box under the stairs. The converter fan probably has a hum but doesn't seem to be as noticeable
|
|
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Recent Threads |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|