Reply
 
Thread Tools Search this Thread Display Modes
 
Old 10-04-2015, 11:53 PM   #1
Rivet Master
 
nickclifford's Avatar
 
1972 31' Sovereign
Currently Looking...
felton , California
Join Date: Aug 2014
Posts: 506
Images: 1
question for someone who knows their stuff on electrical issues !

question for electricians out there ... i'm really stumped on this one .. 2nd owner of a 1972 31' Sovereign, changed the power converter as original was not functioning.(this was done by an RV guy, as seemingly beyond my novice capability, it was a tedious job as after much head scratching, cable between battery and power converter had to be bypassed with a new one to make it all work.)

Everything "works"; 12v, 110, battery charges ... only issue is when using the 12v overhead lights , the converter gets VERY warm / hot and makes a light humming sound. According to the manufacturer, this is not normal.

any thoughts on troubling shooting ? most appreciated
__________________

__________________
nickclifford is offline   Reply With Quote
Old 10-05-2015, 12:16 AM   #2
Rivet Master
 
Glenritas's Avatar

 
1969 25' Tradewind
Shasta Lake , California
Join Date: Sep 2012
Posts: 686
What converter did you install ? Make and model ?
__________________

__________________
Glen & Jane 1969 all electric Airstream 25' TradeWind
2014 Toyota Tundra
1998 Chevy Tahoe
2001 Casita 13' Patriot Deluxe

My Build Thread https://www.airforums.com/forums/f11...ml#post1997059
Glenritas is online now   Reply With Quote
Old 10-05-2015, 09:15 AM   #3
Rivet Master
 
Belegedhel's Avatar
 
1973 21' Globetrotter
Houston , Texas
Join Date: Sep 2009
Posts: 2,198
Your statement "cable between battery and power converter had to be bypassed with a new one to make it all work" gets my attention. It makes me wonder if the installer didn't hook up your converter in such a way that instead of charging the batteries, and the battery providing the 12V to the trailer, the converter itself is acting as a power supply for the 12V system, and the battery is just sitting there being kept charged, but out of the circuit.

Question is, if the trailer is not plugged into a 110V power source, and thus the converter is not doing anything, does your entire 12V system work as expected, drawing from the battery?

good luck!
__________________
Belegedhel is offline   Reply With Quote
Old 10-05-2015, 09:59 AM   #4
Rivet Master
 
HowieE's Avatar
 
1991 34' Excella
Princeton , New Jersey
Join Date: Aug 2003
Posts: 6,810
Images: 12
If the bypass wire was undersized and the fuse panel fed from the converter end of the bypass wire the converter would see the load and run full out to support the load. From an electrical standpoint both ends of the converter to battery are the same as long as the wire between them can support the load. If not the wire becomes a resistor and power will be drawn from the converter rather than the battery.

Remove the shore power and try the experiment above running the lights off just the battery. Feel the positive size wire coming off the battery. If it is getting warm and the lights are dimmer it is undersized.

Once you solve this issue replace the converter with a newer intelligent one that has different charging rates and a battery monitor system.
__________________
WBCCI 12156 AIR 3144 WACHUNG TAC NJ6
2004 Excursion 4x4
1991 34 ft. Excella +220,000 miles, new laminated flooring, new upholstery, new 3200 lbs axles

HowieE is offline   Reply With Quote
Old 10-05-2015, 11:37 AM   #5
4 Rivet Member
 
1977 31' Sovereign
Lynnwood , Washington
Join Date: Jan 2015
Posts: 311
If the new converter gets as warm as you say, there's a bad ground some place.

BTW - The old converter was replaced "for good reason."

Check temperature of 12 volt fuse panel. Touch the fuse connectors. Do they feel "very warm" to the touch a well?? If they do, that means the 12 volt system is trying to ground itself thru the positive wires.

Rule of thumb = Electricity, like water, follows the path of least resistance.

Tom
__________________
TomKirk is offline   Reply With Quote
Old 10-06-2015, 12:17 PM   #6
4 Rivet Member
 
SuzyHomemakr's Avatar
 
1972 29' Ambassador
Boynton Beach , Florida
Join Date: Dec 2013
Posts: 385
Another thing to check... make sure that all of your connections are nice and tight. Corrosion, or a loose connection can cause the heating. Airstreams come with some feeble 12V wiring, IMHO. You can go to the auto parts store and get some #2 ga. cables for short money... you would also need a set of big crimpers.

This is all good advice being given in this thread. Whenever you have electrical problems, start off making the circuit as short as possible, then add stuff back in until you replicate the problem.

If you want to step up your electrical installation, I'm selling a Xantrex 1000 watt inverter/smart charger for a mere pittance
__________________
SuzyHomemakr is offline   Reply With Quote
Old 10-10-2015, 11:13 AM   #7
Rivet Master
 
nickclifford's Avatar
 
1972 31' Sovereign
Currently Looking...
felton , California
Join Date: Aug 2014
Posts: 506
Images: 1
Angry

Quote:
Originally Posted by Belegedhel View Post
Your statement "cable between battery and power converter had to be bypassed with a new one to make it all work" gets my attention. It makes me wonder if the installer didn't hook up your converter in such a way that instead of charging the batteries, and the battery providing the 12V to the trailer, the converter itself is acting as a power supply for the 12V system, and the battery is just sitting there being kept charged, but out of the circuit.

Question is, if the trailer is not plugged into a 110V power source, and thus the converter is not doing anything, does your entire 12V system work as expected, drawing from the battery?

good luck!
thanks for taking the time to respond, yes, the 12v systems works just fine if the trailer is not plugged into shore power. the batter is being fully charged when connected to shore power, all electrical outlets and the a/c work just fine too. But when i switch on ANY 12v overhead light , that's when the converter starts to warm up excessively.
__________________
nickclifford is offline   Reply With Quote
Old 10-10-2015, 11:22 AM   #8
Rivet Master
 
nickclifford's Avatar
 
1972 31' Sovereign
Currently Looking...
felton , California
Join Date: Aug 2014
Posts: 506
Images: 1
Quote:
Originally Posted by HowieE View Post
If the bypass wire was undersized and the fuse panel fed from the converter end of the bypass wire the converter would see the load and run full out to support the load. From an electrical standpoint both ends of the converter to battery are the same as long as the wire between them can support the load. If not the wire becomes a resistor and power will be drawn from the converter rather than the battery.

Remove the shore power and try the experiment above running the lights off just the battery. Feel the positive size wire coming off the battery. If it is getting warm and the lights are dimmer it is undersized.

Once you solve this issue replace the converter with a newer intelligent one that has different charging rates and a battery monitor system.
thanks for the feedback, i'll give this a shot, i'm very confident that the correct wire size was used. i also have a new inteli-power 9200 series.
__________________
nickclifford is offline   Reply With Quote
Old 10-10-2015, 11:25 AM   #9
Rivet Master
 
nickclifford's Avatar
 
1972 31' Sovereign
Currently Looking...
felton , California
Join Date: Aug 2014
Posts: 506
Images: 1
[QUOTE=TomKirk;1693235]If the new converter gets as warm as you say, there's a bad ground some place.

BTW - The old converter was replaced "for good reason."

Check temperature of 12 volt fuse panel. Touch the fuse connectors. Do they feel "very warm" to the touch a well?? If they do, that means the 12 volt system is trying to ground itself thru the positive wires.

Rule of thumb = Electricity, like water, follows the path of least resistance.

Don't believe the fuse panel getting warm, but i'll look again .. it's never blown a fuse either (except for when i shut down a roof vent fan by having to pull wires as couldn't find a switch anywhere) ..another topic ...!
__________________
nickclifford is offline   Reply With Quote
Old 10-10-2015, 11:33 AM   #10
Rivet Master
 
nickclifford's Avatar
 
1972 31' Sovereign
Currently Looking...
felton , California
Join Date: Aug 2014
Posts: 506
Images: 1
Quote:
Originally Posted by SuzyHomemakr View Post
Another thing to check... make sure that all of your connections are nice and tight. Corrosion, or a loose connection can cause the heating. Airstreams come with some feeble 12V wiring, IMHO. You can go to the auto parts store and get some #2 ga. cables for short money... you would also need a set of big crimpers.

This is all good advice being given in this thread. Whenever you have electrical problems, start off making the circuit as short as possible, then add stuff back in until you replicate the problem.

If you want to step up your electrical installation, I'm selling a Xantrex 1000 watt inverter/smart charger for a mere pittance
thanks, can explain in a little more detail what you're suggesting ? where would i run the #2 gage cables to / from ?

the inverter's are good for boon-docking, right? you can power up a coffee machine or whatever from the battery? but if you couldn't recharge battery for a few days, wouldn't this deplete pretty quickly if running high drawing electrical appliances , no?

thanks, nick
__________________
nickclifford is offline   Reply With Quote
Old 10-10-2015, 12:52 PM   #11
Rivet Master
 
Silverflames's Avatar

 
1969 29' Ambassador
brooksville , Florida
Join Date: Nov 2008
Posts: 1,262
I have the 70 amp version of the same brand. When there is a lot of power draw, it will get warm and the fan will come on inside the unit. It is never hot to the touch.
__________________
Not all those who wonder are lost.
Silverflames is offline   Reply With Quote
Old 10-11-2015, 03:52 PM   #12
4 Rivet Member
 
SuzyHomemakr's Avatar
 
1972 29' Ambassador
Boynton Beach , Florida
Join Date: Dec 2013
Posts: 385
Quote:
Originally Posted by nickclifford View Post
thanks, can explain in a little more detail what you're suggesting ? where would i run the #2 gage cables to / from ?

the inverter's are good for boon-docking, right? you can power up a coffee machine or whatever from the battery? but if you couldn't recharge battery for a few days, wouldn't this deplete pretty quickly if running high drawing electrical appliances , no?

thanks, nick
Yes, an inverter is good for the off-the-grid stuff. You are correct in that you must have a huge battery bank for the big loads, or for more time on small loads.

The cables from the battery to the inverter need to be stout, so that would be true for a good quality high-amperage charger as well. The more load that you want to draw, the larger your wires have to be.

Last year, I was at a park with sub-standard power, and had a voltage dip that fried a bunch of gear. A similar thing could have ruined your converter. All it takes is a chilly morning, everybody turns on their space heaters at once, voltage gets real low real fast!

In your case, I would try removing all fuses to all 12V (the circuit is very small now), and see if the converter heats up. That will tell you whether it's the converter or the lights/wiring/other stuff. If the converter stays cool, start putting things back together one at a time until the symptoms return.
__________________

__________________
SuzyHomemakr 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
Who's done their Airstream with their custom style interior? ANY PICS LAWFISH Upholstery, Blinds, Walls & Interior Finishes 1 02-08-2009 06:36 PM
Wally Byam Holiday: Who knows about them? sobephil Vintage Kin 9 10-23-2008 09:28 PM
Any 1976 Argosy 26'ers with "hard rear spare tire covers" that anyone knows of? J. Lee Turne Argosy Motorhomes 3 06-30-2008 08:27 AM
Who knows about this SOB?? tinbender Vintage Kin 16 11-04-2007 08:11 PM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 10:40 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.