Go Back   iRV2 Forums > MOTORHOME FORUMS > MH-General Discussions & Problems
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 10-09-2009, 09:50 PM   #1
Senior Member
 
Jackm's Avatar
 
Workhorse Chassis Owner
Join Date: Nov 2005
Posts: 627
AC/DC Relationship Question

When the AC power in our motorhome (2004 Winnebago Brave) is shut off for any reason (i.e. the power to the pedestal gets cut off), I've noticed that the DC power is shut down as well. I can restore the DC power by flipping the battery connect/disconnect switch (even if the AC power is still out). It's a little disconcerting at night when a power failure occurs since all the lights go out as well.

In any case, I was wondering. Is this a glitch or is it a feature? When the AC power is cut off, the charger/converter stops working. Thus, it is conceivable that the DC power supply is automatically disconnected to prevent the batteries from getting discharged (by DC appliances that were on at the time of the power failure). Thanks in advance.

Jack
__________________

__________________
Jackm 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 10-10-2009, 04:24 AM   #2
Community Moderator
 
RV Wizard's Avatar


 
Country Coach Owners Club
Appalachian Campers
Gulf Streamers Club
Join Date: Mar 2000
Location: Chattanooga, Tn.
Posts: 12,062
Jack, you should have the house batteries turned on when using the coach and off when storing it. I know that you can get power to the coach via shore power connection and the converter is producing 12 vdc but you should not be operating the coach in this manner. You need to have the battery bank turned on for many reasons; one of which you have mentioned.
__________________

__________________
Mike, RVIA & RVSA Certified Master RV Technician
Amy, Dr. Assistant - Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser 450 hp & 1330# torque
06 Saturn Vue, 06 Chevy Z71 4x4 & 2014 Corvette Z51 M7
RV Wizard is offline   Reply With Quote
Old 10-10-2009, 06:50 AM   #3
Senior Member
 
Winnebago Owners Club
Join Date: Dec 2003
Location: MN,USA
Posts: 651
By having the batteries turned on you use them to aid in filtering out hum and also reduce any high or low power blips on the 12 volt lines. Makes it much better for the electronics in your coach.
__________________
2004 Itasca Sunrise 36', Workhorse
2003 Suzuki XL7
Dsouthw524 is offline   Reply With Quote
Old 10-10-2009, 12:18 PM   #4
Senior Member
 
hamguy's Avatar
 
Workhorse Chassis Owner
Join Date: Nov 2003
Location: Mesa, AZ USA
Posts: 1,806
Quote:
Originally Posted by Jackm View Post
When the AC power in our motorhome (2004 Winnebago Brave) is shut off for any reason (i.e. the power to the pedestal gets cut off), I've noticed that the DC power is shut down as well. I can restore the DC power by flipping the battery connect/disconnect switch (even if the AC power is still out). It's a little disconcerting at night when a power failure occurs since all the lights go out as well.

In any case, I was wondering. Is this a glitch or is it a feature? When the AC power is cut off, the charger/converter stops working. Thus, it is conceivable that the DC power supply is automatically disconnected to prevent the batteries from getting discharged (by DC appliances that were on at the time of the power failure). Thanks in advance.

Jack
It sounds to me that your battery isolation solenoid (under the entry step) is bad. This is a very common occurrance. The contacts get burned (they are cheaply built) and they fail to make contact. They are also very inexpensive and easy to replace.
__________________
Wretched excess is just barely enough.

2002 Itasca Suncruiser - WH Chassis - 35U - 2006 Jeep Liberty
hamguy is offline   Reply With Quote
Old 10-11-2009, 04:25 AM   #5
Senior Member
 
Jackm's Avatar
 
Workhorse Chassis Owner
Join Date: Nov 2005
Posts: 627
It sounds like the battery switch might have inadvertently been shut off. I didn't realize that the 12-volt appliances would still operate. Some people have even suggested that when hooked up to shore power, you can even function without a battery.

In any case, I've always been puzzled with the location of the battery switch in our motorhome. More than once, I've flipped the switch accidentally when entering the coach. I'll probably put a cover on it to prevent this from happening again. So the bottom line is that some of you believe that the switch was probably in the "off" position to begin with so when the AC power shut down, no more DC power. Makes sense. Thank you again.

Jack
__________________
Jackm 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
Ball Hitch Question CNCCornwall Trailer Towing and Tow Vehicles Discussion 11 09-08-2009 10:07 PM
Towing Question Silversurfah Toads and Motorhome Related Towing 5 07-20-2009 07:17 AM
Coach Freedom Express, Class C - Fresh Water Question srusso1202 Class A Motorhome Discussions 11 04-26-2007 06:09 PM
Fridge Cooling Question arkaussie Winnebago Industries Owner's Forum 2 05-13-2006 07:38 PM

» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 01:17 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.