Reply
 
Thread Tools Search this Thread Display Modes
 
Old 01-20-2016, 02:47 PM   #1
Seasonal Camper
 
TxCowboy's Avatar
 
Join Date: Jan 2016
Location: Texas
Posts: 297
What's making this noise?

Have a 2016 Hill Country 26RB.

Have a faint whining/buzzing noise behind the circuit breaker panel. This would be to the right of the fridge and near the furnace.

I have everything turned except the radio (will figure that out later) and the propane detector. The outdoor fridge is unplugged.

The noise goes away when I unplug the shore power so it is definitely something powered by AC current.

Any idea what might be causing this sound?
__________________
Jeff & Laurie -- Full timing in Rockport, Texas
Auggie (our beer-loving English Cocker Spaniel)
Angus (55 pounds of attitude in a 5 pound chihuahua body)

Our home base -- 2018 Grand Design Solitude 375RES -- The "Uno Mas!"
The mobile office -- 2016 Crossroads Hill Country HCT26RB -- The "Poquito Mas!"
Gone but not forgotten: 2015 Heartland Landmark 365 Key West (lost to Hurricane Harvey)
TxCowboy is offline   Reply With Quote
Old 01-20-2016, 03:03 PM   #2
Full Time Camper
 
cowboy_71's Avatar
 
Join Date: Oct 2009
Location: LA
Posts: 952
A fan used to keep circuits cool?
__________________
07 Cruiser 30sk

06 F350 KR PS CC SRW

...Wish we were camping...
cowboy_71 is offline   Reply With Quote
Old 01-20-2016, 03:03 PM   #3
Full Time Camper
 
cowboy_71's Avatar
 
Join Date: Oct 2009
Location: LA
Posts: 952
Does it come on when you turn on lights?
__________________
07 Cruiser 30sk

06 F350 KR PS CC SRW

...Wish we were camping...
cowboy_71 is offline   Reply With Quote
Old 01-20-2016, 03:36 PM   #4
Full Time Camper
 
fhenn's Avatar
 
Join Date: Jul 2006
Location: Ms
Posts: 2,739
cooling fan to keep that area cool
__________________
Frank and Janet Henn
2017 380MBH pushing a 2007 Dodge
CDT with a six speed Automatic
Traveling with Hoover and Rainbow the wonder dogs and now with Sunshine the rescue Schnauzer.
fhenn is offline   Reply With Quote
Old 01-20-2016, 03:38 PM   #5
Full Time Camper
 
Russb's Avatar
 
Join Date: Oct 2009
Location: Texas
Posts: 601
Sounds like the converter cooling fan. It will come on as the 12v load increases.
__________________
Russ
Forney,TX
2010 Cruiser CTX CT29RLX
2009 F-150XLT
Russb is offline   Reply With Quote
Old 01-20-2016, 04:19 PM   #6
Full Time Camper
 
Join Date: Oct 2004
Location: Texas
Posts: 1,508
If your frig is located in the slide out, then it is the cooling fan to help the frig since air flow is not as good when it is located in the slide out. Otherwise, it is probably the converter fan and speed/noise will vary depending on the amount of 12V power being consumed including the battery recharge circuit (so a very low or dead battery will cause the fan to run). The fan for the frig. MAY run anytime the frig. is turned on. The fan for the converter MAY run whenever shore power is available. So, based on your info, it is probably the converter fan. But if you have all 12V DC items turned off and the fan continues to run, then the battery is not up to full charge or defective.
__________________
Larry Day

Texas Baptist Men-Retiree Builders member since '01
13 Silverado 3500HD D/A, 2wd CCSB srw, custom RKI bed
11 Cruiser CF32MK
http://www.picturetrail.com/dayle1
Dayle1 is offline   Reply With Quote
Old 01-20-2016, 04:43 PM   #7
Seasonal Camper
 
TxCowboy's Avatar
 
Join Date: Jan 2016
Location: Texas
Posts: 297
Quote:
Originally Posted by cowboy_71 View Post
Does it come on when you turn on lights?
All of the light switches are turned off.
__________________
Jeff & Laurie -- Full timing in Rockport, Texas
Auggie (our beer-loving English Cocker Spaniel)
Angus (55 pounds of attitude in a 5 pound chihuahua body)

Our home base -- 2018 Grand Design Solitude 375RES -- The "Uno Mas!"
The mobile office -- 2016 Crossroads Hill Country HCT26RB -- The "Poquito Mas!"
Gone but not forgotten: 2015 Heartland Landmark 365 Key West (lost to Hurricane Harvey)
TxCowboy is offline   Reply With Quote
Old 01-20-2016, 04:47 PM   #8
Seasonal Camper
 
TxCowboy's Avatar
 
Join Date: Jan 2016
Location: Texas
Posts: 297
Quote:
Originally Posted by Dayle1 View Post
If your frig is located in the slide out, then it is the cooling fan to help the frig since air flow is not as good when it is located in the slide out. Otherwise, it is probably the converter fan and speed/noise will vary depending on the amount of 12V power being consumed including the battery recharge circuit (so a very low or dead battery will cause the fan to run). The fan for the frig. MAY run anytime the frig. is turned on. The fan for the converter MAY run whenever shore power is available. So, based on your info, it is probably the converter fan. But if you have all 12V DC items turned off and the fan continues to run, then the battery is not up to full charge or defective.
I'll go with this. I haven't pulled that lower vented panel yet but I did run on battery power for about 30 minutes earlier today so if the converter is behind there and has a fan, that is probably the source of the noise.

The RV is plugged into shore power and the appliances, lights, etc., are all turn off so I should be able to check in the morning and that cooling fan should be off (no noise).

Right?
__________________
Jeff & Laurie -- Full timing in Rockport, Texas
Auggie (our beer-loving English Cocker Spaniel)
Angus (55 pounds of attitude in a 5 pound chihuahua body)

Our home base -- 2018 Grand Design Solitude 375RES -- The "Uno Mas!"
The mobile office -- 2016 Crossroads Hill Country HCT26RB -- The "Poquito Mas!"
Gone but not forgotten: 2015 Heartland Landmark 365 Key West (lost to Hurricane Harvey)
TxCowboy is offline   Reply With Quote
Old 01-20-2016, 06:04 PM   #9
Full Time Camper
 
Join Date: Oct 2004
Location: Texas
Posts: 1,508
Quote:
Originally Posted by TxCowboy View Post
I'll go with this. I haven't pulled that lower vented panel yet but I did run on battery power for about 30 minutes earlier today so if the converter is behind there and has a fan, that is probably the source of the noise.

The RV is plugged into shore power and the appliances, lights, etc., are all turn off so I should be able to check in the morning and that cooling fan should be off (no noise).

Right?
Yes, the converter should bring the battery up to full charge in maybe 1 hour depending on how depleted it was. But if the fan continues to run, there may be a problem with the battery like a shorted cell or low water level. To verify you can turn shore power off, then disconnect the battery, then turn shore power back on, should be no noise. If you have a battery disconnect switch, then that makes it even easier. There is also a very remote possibility that the converter itself is defective and trying to overcharge the battery or some other 12V high drain load that is accidentally on (but there really aren't any).
__________________
Larry Day

Texas Baptist Men-Retiree Builders member since '01
13 Silverado 3500HD D/A, 2wd CCSB srw, custom RKI bed
11 Cruiser CF32MK
http://www.picturetrail.com/dayle1
Dayle1 is offline   Reply With Quote
Old 01-20-2016, 06:08 PM   #10
Family Vacation Member
 
Robb's Avatar
 
Join Date: Aug 2014
Location: Ohio
Posts: 130
I'm guessing inverter cooling fan. Based on all of the reading I did when we purchased our ST33BD, Crossroads seems to use inverters that are marginal based on the current draw. If we turned on just two 12v lights while the shore power was plugged in, the fan never shut off. I just replaced all of the bulbs with LEDs and now it rarely runs.
__________________
2015 Sunset Trail Reserve ST33BD
2014 Toyota Tundra Crewmax 4X4
Robb is offline   Reply With Quote
Old 01-20-2016, 06:30 PM   #11
Seasonal Camper
 
TxCowboy's Avatar
 
Join Date: Jan 2016
Location: Texas
Posts: 297
Quote:
Originally Posted by Dayle1 View Post
Yes, the converter should bring the battery up to full charge in maybe 1 hour depending on how depleted it was. But if the fan continues to run, there may be a problem with the battery like a shorted cell or low water level. To verify you can turn shore power off, then disconnect the battery, then turn shore power back on, should be no noise. If you have a battery disconnect switch, then that makes it even easier. There is also a very remote possibility that the converter itself is defective and trying to overcharge the battery or some other 12V high drain load that is accidentally on (but there really aren't any).
I'll check this tomorrow morning and see what happens.
__________________
Jeff & Laurie -- Full timing in Rockport, Texas
Auggie (our beer-loving English Cocker Spaniel)
Angus (55 pounds of attitude in a 5 pound chihuahua body)

Our home base -- 2018 Grand Design Solitude 375RES -- The "Uno Mas!"
The mobile office -- 2016 Crossroads Hill Country HCT26RB -- The "Poquito Mas!"
Gone but not forgotten: 2015 Heartland Landmark 365 Key West (lost to Hurricane Harvey)
TxCowboy is offline   Reply With Quote
Old 01-20-2016, 06:31 PM   #12
Seasonal Camper
 
TxCowboy's Avatar
 
Join Date: Jan 2016
Location: Texas
Posts: 297
Quote:
Originally Posted by Robb View Post
I'm guessing inverter cooling fan. Based on all of the reading I did when we purchased our ST33BD, Crossroads seems to use inverters that are marginal based on the current draw. If we turned on just two 12v lights while the shore power was plugged in, the fan never shut off. I just replaced all of the bulbs with LEDs and now it rarely runs.
This unit is supposed to have nothing but LEDs. I'll spot check a couple of lights tomorrow to confirm that.
__________________
Jeff & Laurie -- Full timing in Rockport, Texas
Auggie (our beer-loving English Cocker Spaniel)
Angus (55 pounds of attitude in a 5 pound chihuahua body)

Our home base -- 2018 Grand Design Solitude 375RES -- The "Uno Mas!"
The mobile office -- 2016 Crossroads Hill Country HCT26RB -- The "Poquito Mas!"
Gone but not forgotten: 2015 Heartland Landmark 365 Key West (lost to Hurricane Harvey)
TxCowboy is offline   Reply With Quote
Old 01-21-2016, 08:07 AM   #13
Seasonal Camper
 
TxCowboy's Avatar
 
Join Date: Jan 2016
Location: Texas
Posts: 297
Checked on the fan noise this morning. It was off when I entered the RV and came on immediately when I turned on the interior lights. So it seems to be the converter fan. So thanks to Robb and others for your insights.

I spot checked a couple of lights. Seems most of the interior lights are LED. Not sure what type of light is over the dining table. Interesting bulb shape that I've not seen before.

The exterior lights seem to be incandescent. Not worried about the running lights but I would like to replace the porch and step lights with LED. The LEDs should be a little brighter than the incandescent lights that are currently installed and this unit doesn't have a scare light so a few more lumens would be good.

Thanks again for everybody's input.
__________________
Jeff & Laurie -- Full timing in Rockport, Texas
Auggie (our beer-loving English Cocker Spaniel)
Angus (55 pounds of attitude in a 5 pound chihuahua body)

Our home base -- 2018 Grand Design Solitude 375RES -- The "Uno Mas!"
The mobile office -- 2016 Crossroads Hill Country HCT26RB -- The "Poquito Mas!"
Gone but not forgotten: 2015 Heartland Landmark 365 Key West (lost to Hurricane Harvey)
TxCowboy is offline   Reply With Quote
Reply

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


» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3
Disclaimer:

This website is not affiliated with or endorsed by Crossroads RV or any of its affiliates. This is an independent, unofficial site.


All times are GMT -6. The time now is 03:00 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
×