Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > MOTORHOME FORUMS > Class A Motorhome Discussions
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 01-25-2023, 08:19 AM   #1
Junior Member
 
Join Date: Jan 2023
Posts: 6
Coach DC power cycling

I recently replaced both 5 year old 12 volt coach batteries on a 2006 Class A Gulfstream independence. Afterwards when I pressed the coach battery disconnect switch to restore house power, the lights started cycling off and on. I can hear the relay picking up and dropping out each time, but it won't stay latched in. Looking for troubleshooting suggestions.
Thanks in advance for any help you can provide.
Tom57 is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 01-25-2023, 09:04 AM   #2
Senior Member
 
Join Date: Aug 2019
Location: Eastern outskirts of Dallas, TX
Posts: 2,776
If you weren’t having problems before - then chances are you got something hooked up wrong when you replaced the batteries.

Did you take a picture of the wire connections at the batteries before you disconnected?

Do you have a coach wiring diagram? If not, you might try to locate one.
__________________
91 Ultrastar Champion02 Georgie Boy Landau 8.1l Workhorse
03 Jeep Wrangler TJ 2018 Jeep Wrangler JK toad
MrMark52 is offline   Reply With Quote
Old 01-25-2023, 09:09 AM   #3
Senior Member
 
Arch Hoagland's Avatar
 
Monaco Owners Club
Workhorse Chassis Owner
Join Date: Aug 2002
Location: Clovis, CA, USA
Posts: 12,316
Coach batteries are usually 6 volt batteries. Are you sure they were 12 volt?

Did you measured the voltage of each battery before you installed it to make sure it was good and fully charged?
__________________
2004 Monaco La Palma 36DBD, W22, 8.1, 7.1 MPG
2000 LEXUS RX300 FWD 22MPG 4020 LBS
Variety is the spice of life.
Arch Hoagland is online now   Reply With Quote
Old 01-25-2023, 09:09 AM   #4
Senior Member
 
Join Date: Jul 2014
Posts: 32,746
Backwards cables, what your hearing may be an auto reset circuit breaker tripping in and out.

Recheck your cables.
twinboat is offline   Reply With Quote
Old 01-25-2023, 09:10 AM   #5
Senior Member
 
Winnebago Owners Club
Workhorse Chassis Owner
Join Date: Nov 2018
Posts: 2,027
Could be hooked up backwards, or in series for 24V. Better check those connections.

Mark B.
Albuquerque, NM
Mark_K5LXP is offline   Reply With Quote
Old 01-26-2023, 07:45 AM   #6
Junior Member
 
Join Date: Jan 2023
Posts: 6
Thanks all for the quick response.

I am sure they are 12 volt batteries and they are in parallel. The connecting cables are all very specific lengths and it would be nearly impossible to hook them up incorrectly, but I'll double check again too make sure I didn't leave one off. Both new batteries were measured at 12.7 volts before installing them. After installation with shore power plugged in they were getting 13.7 from the converter.

I've tried numerous times to find wiring diagrams on the internet for this MH, with no luck.

Can you tell me more about this auto reset breaker? I did not know such a thing existed.

Something I did not add to the first post is that I replaced the batteries because one of them blew up. I attached a picture this time to show I'm not exaggerating. I neutralized the battery acid and cleaned everything up before installing the new batteries.
Attached Thumbnails
Click image for larger version

Name:	20230123_160121.jpg
Views:	9
Size:	362.0 KB
ID:	385057  
Tom57 is offline   Reply With Quote
Old 01-26-2023, 08:04 AM   #7
Senior Member
 
Join Date: Aug 2019
Location: Eastern outskirts of Dallas, TX
Posts: 2,776
A battery that blows up like that doesn’t “just happen” without something being awry - and may likely be the cause of your problem.

How much water was in the other battery?

Low battery water and/or loose connections in the area of the batteries could have lead to a hydrogen explosion.

Have you seen, or do you have this manual?
https://www.gulfstreamcoach.com/medi...ers-manual.pdf
__________________
91 Ultrastar Champion02 Georgie Boy Landau 8.1l Workhorse
03 Jeep Wrangler TJ 2018 Jeep Wrangler JK toad
MrMark52 is offline   Reply With Quote
Old 01-26-2023, 08:06 AM   #8
Junior Member
 
Join Date: Jan 2023
Posts: 6
I just checked the internet for auto resetting circuit breakers and I should add that the lights cycled at least once per second. So it seems unlikely that a bi metallic circuit breaker could cool off enough that quickly to reset the circuit; especially over the course of 10 or so seconds that I let this cycling continue before activating the disconnect switch again.

My initial though was the latching power trust that may have 2 springs in it. If the latching mechanism was not working, could the 2 springs make the connection bounce open and closed.
Tom57 is offline   Reply With Quote
Old 01-26-2023, 08:09 AM   #9
Junior Member
 
Join Date: Jan 2023
Posts: 6
The other battery had cells that ranged from 20% full to 80% full. All of them would have needed filling if I hadn't replaced it.

Even if the converter was bad, how would that address the power cycling I see now?
Tom57 is offline   Reply With Quote
Old 01-26-2023, 08:20 AM   #10
Senior Member
 
Join Date: Nov 2018
Location: Beaver Dam, Wisconsin
Posts: 4,055
Self resetting circuit breakers are often used on critical circuits like head lights and electric brakes. Mine is a thermal switch. It trips "off" when it gets hot and reconnects when it cools off. The cycle is short and would cause flashing 12 volt lights.

https://www.amazon.com/s?k=self+rese..._ts-doa-p_2_14
__________________
Paul Bristol
Kodiak Cub 176RD
Nissan Pathfinder 2015
Persistent is offline   Reply With Quote
Old 01-26-2023, 08:26 AM   #11
Senior Member
 
Join Date: Aug 2019
Location: Eastern outskirts of Dallas, TX
Posts: 2,776
Quote:
Originally Posted by Tom57 View Post
The other battery had cells that ranged from 20% full to 80% full. All of them would have needed filling if I hadn't replaced it.

Even if the converter was bad, how would that address the power cycling I see now?
A lot of hydrogen created in a partially filled battery.

I may have steered you down the wrong path with the converter comment. But you still might want to check it.

Monitor the battery voltage while you flip the disconnect switch - what is battery voltage doing while the lights are blinking?
If voltage remains >12vdc, locate the coil terminals on the relay and see what voltage is doing there.

Are the lights incandescent or LED?
__________________
91 Ultrastar Champion02 Georgie Boy Landau 8.1l Workhorse
03 Jeep Wrangler TJ 2018 Jeep Wrangler JK toad
MrMark52 is offline   Reply With Quote
Old 01-26-2023, 02:24 PM   #12
Junior Member
 
Join Date: Jan 2023
Posts: 6
The lights are LED. I'm going to wait for it to warm up a bit and do some more troubleshooting. Thanks for your help guys. More to follow.
Tom57 is offline   Reply With Quote
Old 01-28-2023, 05:14 PM   #13
Junior Member
 
Join Date: Jan 2023
Posts: 6
Problem Solved

For future reference, the problem turned out to be pretty simple. Each battery post has multiple cable lugs and the surface exposed to air had significant corrosion on them. When I reinstalled the cables, I didn't put them back on in the same order so the corrosion prevented a good connection. In short, as soon as the primary power relay picked up, the voltage dropped to the point the relay would drop out and then the voltage would recover and the coil would pick up again.

I simply sanded the copper lugs clean, reconnected them and everything works as designed.
Tom57 is offline   Reply With Quote
Old 01-28-2023, 05:35 PM   #14
Senior Member
 
Arch Hoagland's Avatar
 
Monaco Owners Club
Workhorse Chassis Owner
Join Date: Aug 2002
Location: Clovis, CA, USA
Posts: 12,316
Thanks for the update, glad to hear all is well...
__________________
2004 Monaco La Palma 36DBD, W22, 8.1, 7.1 MPG
2000 LEXUS RX300 FWD 22MPG 4020 LBS
Variety is the spice of life.
Arch Hoagland is online now   Reply With Quote
Reply

Tags
battery, coach, cycling, power



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
Engine Battery Power Cycling On/Off Lukeaa Monaco Owner's Forum 8 02-10-2021 01:35 PM
Aqua-Hot circulator pump cycling with power off CountryB Monaco Owner's Forum 4 11-03-2017 05:46 PM
All batteries died/no power after cycling gen coastalsqrl RV Systems & Appliances 5 10-12-2017 05:48 PM
Power Inverter Cycling and and Off travelingjw Travel Trailer Discussion 2 08-13-2017 09:15 PM
Generator Cycling and AC Power Drop-out--Update sdcyclist Alpine Coach Owner's Forum 3 03-07-2008 12:20 PM

» Featured Campgrounds

Reviews provided by


All times are GMT -6. The time now is 11:46 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2023, vBulletin Solutions, Inc.