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10-26-2014, 12:00 PM
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#1
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Junior Member
Join Date: Oct 2014
Posts: 2
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12V Batteries Only Putting 6V Inside
I WAS HAVING ISSUES OF THINGS NOT WORKING CORRECTLY IN THE MOTERHOME. MY HOUSE BATTERIES WERE BAD AND I HAD THEM REPLACED ALONG WITH THE INVERTOR. NOW IT SHOWLES 30 AMPS COMING INTO THE COACH BUT ALL MY LIGHTS GET DIM AND NOTHING WORKS WHAT IS THE PROBLEM. THERE IS A FUSE BETWEEN MY BATTERY AND THE INVERTOR A 135 AMP i REPLACED IT AND IT STILL DONT WORK. I HAVE 6V ON ONE SIDE OF THE FUSE AND 12V ON THE OTHER.ANYONE KNOW WHAT i CAN DO TO MAKE THIS WORK?
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10-26-2014, 12:14 PM
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#2
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Senior Member
Fleetwood Owners Club Ford Super Duty Owner
Join Date: Jun 2012
Location: SoCal
Posts: 15,749
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Something is likely not wired correctly. Double check the wiring.
__________________
Vince and Susan
2011 Tiffin Phaeton 40QTH (Cummins ISC/Freightliner)
Flat towing a modified 2005 Jeep (Rubicon Wrangler)
Previously a 2002 Fleetwood Pace Arrow 37A and a 1995 Safari Trek 2830.
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10-26-2014, 02:00 PM
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#3
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Senior Member
Monaco Owners Club Holiday Rambler Owners Club
Join Date: Oct 2012
Location: Tucson AZ
Posts: 261
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if the fuse is between your inverter and the batts hard to understand the voltage diff from one side of the fuse to the other. the fuse is just a piece of metal that will melt if over amps are fed thru it. should show same volts both sides.
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Paul & Megan 2007 Neptune XL 36 PDQ REK Bilsteins, KarKaddy, mini cooper, W/ Bear and Sedona
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10-26-2014, 02:23 PM
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#4
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Senior Member
Ford Super Duty Owner
Join Date: Dec 2009
Location: Mcdonough, Ga.
Posts: 5,926
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If the fuse was blown, you could have 6 v on one side and 12v on the other. take one side loose and read for continuity across the fuse.
__________________
1998 Pace Arrow 35 ft. F53 Ford V10 2014 Honda CRV toad
32 years mechanic at Delta Air Lines 15 year motorhome service manager. 3 popups....2 travel trailers....5 motorhomes....loved them all.
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10-26-2014, 02:26 PM
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#5
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Senior Member
Fleetwood Owners Club Ford Super Duty Owner
Join Date: Jun 2012
Location: SoCal
Posts: 15,749
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Are you sure the fuse is not blown? If voltage is measured to ground and it differs from one side of the fuse to the other, the fuse is open. And something is mis-wired causing the voltage to appear on the load side of the open fuse, and likely blowing the fuse.
__________________
Vince and Susan
2011 Tiffin Phaeton 40QTH (Cummins ISC/Freightliner)
Flat towing a modified 2005 Jeep (Rubicon Wrangler)
Previously a 2002 Fleetwood Pace Arrow 37A and a 1995 Safari Trek 2830.
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10-26-2014, 03:58 PM
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#6
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Senior Member
Join Date: Feb 2010
Posts: 4,654
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Just a guess...
Fuse is open.
Replaced batteries...2 6 volt wired parallel?
Get voltmeter and do some troubleshooting and verify all wiring before replacing fuse.
__________________
Tony & Lori
1989 Country Coach Savannah SE
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10-26-2014, 03:59 PM
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#7
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Senior Member
Damon Owners Club Workhorse Chassis Owner
Join Date: Mar 2009
Posts: 24,024
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You said the batteries were bad and you had them replaced?
Question and short story:
Question: DID YOU do the replacement or did a "Professional"?
(IF professional does he know the difference between his ___- and a hole in the ground? but I'm not asking that).
The short story:
Forum member went to a well known and respected RV dealer and had 'em put in all new Batteries,, Good quality GC-2 Six volt Golf car batteries.. Now I will tell you I have actually visited this dealer and they are usually rather good.
Idiot technician put 'em in wrong so they were wired for six volt, not 12
I can understand an owner doing it, I mean I grew up with six volt batteries, and had to learn 12 (They changed before I learned (officially) to drive but growing up on the farm we had older vehicles that still had six volt systems). And I'm trained in Electronics so I know about that king of thing form there too.
But when you have a dealer do it, You EXPECT him to know what he is doing you EXPECT him to know his job and you are PAYING him for that knowledge. But it still got done wrong, by a dealer.
I will not name the dealer,,, I strongly suspect the technician no longer works there.
__________________
Home is where I park it!
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10-27-2014, 01:53 PM
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#8
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Senior Member
Newmar Owners Club
Join Date: Mar 2005
Location: Abbotsford, BC
Posts: 532
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6V on the battery side of the fuse sounds like the batteries are wired incorrectly and are not in series (to take 2 6V batteries and make them behave like one 12V battery) or in series-parallel (wire a second pair of 6V batteries in series to act like one 12V... and then wire the two pairs in parallel to double the amp-hour capacity).
12V on the other side of the fuse sounds like you're plugged into shore power and the converter/charger (or inverter/converter/charger) is charging the batteries... so 12V going into the fuse.
DEFINITELY check all the wiring to be sure things were done correctly. It sounds like there was a mistake when the new batteries were installed!
__________________
John
2005 Newmar MADP
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10-27-2014, 02:13 PM
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#9
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Community Moderator
Join Date: Aug 2011
Posts: 6,182
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This should help you check the wiring to the batteries.
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10-27-2014, 02:43 PM
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#10
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Senior Member
Damon Owners Club Workhorse Chassis Owner
Join Date: Mar 2009
Posts: 24,024
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Let me put it this way
"I have six volts on one side of the fuse and 12 on the other"
Fuse is blown, Replace.
__________________
Home is where I park it!
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10-27-2014, 03:27 PM
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#11
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Senior Member
Join Date: Feb 2010
Posts: 4,654
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Fuse blown
Wired WRONG
Correct wiring to confirm 12 volts from battery on battery side of blown fuse and 12 volts on charge supply side of blown fuse
Replace fuse ...test first with largest "cheap fuse" you have as the standard fuse may be expensive.
A number 14 wire is rated 15 amps but fuses higher.
Can be used to test here by flashing or sparking the fuse.
__________________
Tony & Lori
1989 Country Coach Savannah SE
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10-28-2014, 09:38 AM
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#12
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Member
Newmar Owners Club
Join Date: Apr 2013
Location: Barrie, Ontario
Posts: 46
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I had exactly the same problem on a 2005 new to us MADP. My big symptom was slides wouldn't work. Kind of annoying on our new home. Four 6 volts batteries were wired for 12 volts but idiot shop tech put the coach panel connection off the middle of two of the 6 volt batteries. Hence six volts to the coach. Amazing how much better things worked when we moved the panel connection to the "end" of the battery pair.
__________________
Rick and Cathy Walker with Maggie and Bella our Shitzu/Bichon cross puppies.
43' 2005 Mountain Aire 4304, Spartan chassis, Cummins 400 ISL, Blue Ox, 2011 Chev Equinox
Started Full Timing June 2013
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