Good Sam Club Open Roads Forum: General RVing Issues: DC power
Open Roads Forum Already a member? Login here.   If not, Register Today!  |  Help

Newest  |  Active  |  Popular  |  RVing FAQ Forum Rules  |  Forum Posting Help and Support  |  Contact  

Search:   Advanced Search

Search only in General RVing Issues


Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
haasje

Alberta

New Member

Joined: 05/31/2020

View Profile


Offline
Posted: 05/31/20 08:05pm Link  |  Quote  |  Print  |  Notify Moderator

my name is John I’ve got a question regarding my 12V lights etc. In my motorhome. When I plug it in to AC power all my outlets are getting 115 volts also my AC works and microwave but no 12V stuff at all. Also from my RV battery no lights etc. However when I start my vehicle all the 12V items work. Could it be my converter or what?
Fuses are all good. Could I get some advice please.

12th Man Fan

Flower Mound , Texas

Senior Member

Joined: 03/05/2009

View Profile



Good Sam RV Club Member

Offline
Posted: 05/31/20 08:08pm Link  |  Quote  |  Print  |  Notify Moderator

Either a dead battery or bad converter. Not sure but I think the converters have internal fuses. Have you checked yours?


2014 GMC Duramax 4X4 DRW Crew

2015 DRV Tradition

Old-Biscuit

Verde Valley

Senior Member

Joined: 06/20/2009

View Profile



Posted: 05/31/20 09:32pm Link  |  Quote  |  Print  |  Notify Moderator

Battery supplies RV DC System when NOT connected to AC Power Source
AC Power Source supplies AC to Converter which then supplies RV DC System and maintain/charge battery

Battery POS Cable In-line fuse blown would only prevent battery from supply DC
Converter Reverse Polarity Fuses blown will prevent converter from supplying DC/charging battery (can be on backside of converter or installed on DC Dist Fuse Panel

If you have an INverter.....battery would be source of DC so battery POS cable in-line fuse (Or DC Circuit Breaker) would be suspect

More details would be helpful.....
Year/Brand/Model of RV
Brand/Model of Converter ----or Inverter if you have that instead of converter

CONverter...AC Voltage IN and DC Voltage OUT
INverter....DC Voltage IN and AC Voltage OUT


Is it time for your medication or mine?


2007 DODGE 3500 QC SRW 5.9L CTD In-Bed 'quiet gen'
2007 HitchHiker II 32.5 UKTG 2000W Xantex Inverter
On the Road Debt Free April '07
Off the road still Debt Free Jan. '14

Flute Man

Payson, Arizona

Senior Member

Joined: 03/21/2019

View Profile


Offline
Posted: 05/31/20 10:40pm Link  |  Quote  |  Print  |  Notify Moderator

I suspect a bad battery as well. Maybe you can find an electrical person with a meter that can help troubleshoot.
How old is your battery or batteries?
I would measure the battery voltage right at the posts where the cables are connected. Also verify that the circuit breaker that feeds the converter with 120 V is not tripped
Let us know the battery voltage and we can go from there.

Also, I might be able to help you over the phone so feel free to give me a call.


Jerry Parr
05 Mandalay 40B
Cat C7 350
04 Honda CR-V
Ham Radio K7OU
Retired EE
[email protected]
602-321-8141
Full-timer

wa8yxm

Wherever I happen to park

Senior Member

Joined: 07/04/2006

View Profile


Offline
Posted: 06/01/20 05:14am Link  |  Quote  |  Print  |  Notify Moderator

12th Man Fan wrote:

Either a dead battery or bad converter. Not sure but I think the converters have internal fuses. Have you checked yours?


There are 3 suspects
ONE 12 volt house battery disconnect off (Very low probility)
Two Bad converter (Very high probility) resulting in a dead battery (Likewise)

Locate the converter.. Sometimes they are behind the power distribution panel.. But first on that panel look for a breaker marked CONV or CONVERTER.. make sure it is set (Cycle it)

IF the converter is part of the power panel.. Well we can talk about how to test it but I'm fairly sure it is NOT working. (There is one type of battery failure that will shut down a smart converter however)

If it is remote.... Well let me describe MY install
The power distribution panels (one each 12 and 120 volt not the same cover) are in the hall roughly amidships.

The converter itself is a PLUG IN Model all the way to the rear in a basement compartment... From time to Time I have to plug it back in.

Yup. Only once have I had to replace it (Rig was 12+ years old at the time) Thankfully the company that made it is on my alternative path.

For converters that are part of the power panel:
Progressive Dynamics 4600 (match the last two digits as close as you can to what you have now)

For Stand alones 9200 (And the same comment on the last two digits)

Made in the USA no less.


Home is where I park it.
Kenwood TS-2000 housed in a 2005 Damon Intruder 377


Super_Dave

Harrisville, UT

Senior Member

Joined: 01/19/2007

View Profile


Offline
Posted: 06/01/20 07:02am Link  |  Quote  |  Print  |  Notify Moderator

It would seem to me that if he has no 12v power when connected to nothing that it would be the bad battery scenario. The fact that all the 12v items work when plugged into the truck tells me that the rest of the 12v system is working fine.


Truck: 2006 Dodge 3500 Dually
Rig: 2018 Big Country 3155 RLK
Boat: 2003 Jetcraft 2125 - Yamaha 150 HP & 8 HP Kicker


jdc1

Rescue, Ca

Senior Member

Joined: 05/30/2011

View Profile


Offline
Posted: 06/01/20 08:32am Link  |  Quote  |  Print  |  Notify Moderator

Converter AND a bad battery (because the truck battery will run the 12v features).

Grit dog

Black Diamond, WA

Senior Member

Joined: 05/06/2013

View Profile


Offline
Posted: 06/01/20 09:55am Link  |  Quote  |  Print  |  Notify Moderator

^This.


"Yes Sir, Oct 10 1888, Those poor school children froze to death in their tracks. They did not even find them until Spring. Especially hard hit were the ones who had to trek uphill to school both ways, with no shoes." -Bert A.

Lwiddis

Mono Basin National Forest Scenic Area

Senior Member

Joined: 08/12/2016

View Profile



Good Sam RV Club Member

Offline
Posted: 06/01/20 10:57am Link  |  Quote  |  Print  |  Notify Moderator

Bad battery gets my vote BUT checking fuses first doesn't cost anything.


Winnebago 2101DS TT & 2020 Chevy Silverado 1500 LTZ Z71, 300 watts solar-parallel & MPPT, Trojan T-125s. TALL pole for flags. Prefer USFS, COE, BLM, NPS, TVA, USF&WS, state & county camps. Bicyclist! 14 year Army vet - 11B40 then 11A - (MOS 1542 & 1560)


haasje

Alberta

New Member

Joined: 05/31/2020

View Profile


Offline
Posted: 06/01/20 08:57pm Link  |  Quote  |  Print  |  Notify Moderator

Thank you for everyone’s help with this issue. It was a bad battery and a 175A fuse. Thanks again
John Driessen.

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 

Search:   Advanced Search

Search only in General RVing Issues


New posts No new posts
Closed, new posts Closed, no new posts
Moved, new posts Moved, no new posts

Adjust text size:




© 2020 CWI, Inc. © 2020 Good Sam Enterprises, LLC. All Rights Reserved.