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Old 04-29-2018, 09:03 AM   #1
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no 12 volts

I have a 2011 Puma 19FS.. Default breaker went out, unplugged for months, replaced default breaker and outlets working 120v.. my battery showed bad, so I unhooked from RV and tested the convertor, it is putting out 12v to the fuse panel.. 12v are going out of fuse panel at each fuse but I do not have lights, AC control panel, refrigerator control panel or radio.. what's the problem, manual shows no trouble shooting to solve..
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Old 04-29-2018, 09:17 AM   #2
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A few things to try.

I would start by replacing the battery with a good one.
Then check voltage at the battery with the TT connected to shore power. You should see something like 13.8V. If in the 12.6 volt range, then it is likely the reverse polarity fuses blew. These are the two large 30-40A fuses either in the distribution panel or on the back of the converter. You can also check the resettable breaker on the tongue. There should be a small button on the side to reset it. Many times connecting shore power with a very dead battery will result in blowing the fuses.
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Old 04-29-2018, 11:46 AM   #3
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thanks for taking your time to help.. I understand a battery is not necessary to get your 12v system working if it is plugged up to 120v, the convertor supplies 12v to the fuse panel and will keep battery charged if there is one.. I have 12v at the fuse panel without the battery wired to the panel and 12v going through all fuses.. that source is from the converter.. I've checked the fuse there at the tongue 30 amp one and it is good.. does a good battery have to be in the circuit for the 12v system to work.. thanks again for taking the time to help..
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Old 04-29-2018, 12:00 PM   #4
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The converter will supply 12 volts to your trailer without a battery connected. If you have a battery disconnect it usually has to be on for the 12 volts system to work even if you don't have a battery connected. Also as mentioned check the two reverse polarity fuse in the distribution panel if OK...30 or 40 amps...see picture (40 amp orange fuses).
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Old 04-29-2018, 12:38 PM   #5
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12v problems

thanks again.. not sure I understand your statement "If you have a battery disconnect it usually has to be on for the 12 volts system to work even if you don't have a battery connected."

are you saying there must be a good battery in the circuit for my system to work on 12v.. when I put the neg cable back on the panel the volts drop to six volts from the convertor, that's with the cables on a bad battery I have unhooked cables at the battery and the lleads from the battery on the 12v panel that say Neg. even Pos. I checked and there is 12v on the fuses you spoke about.. and they are good..
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Old 04-29-2018, 12:43 PM   #6
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You keep saying 12V. Is that the actual voltage you are measuring? The converter should be providing more than 12V if it is working properly.
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Old 04-29-2018, 04:01 PM   #7
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I'll check for sure, I think where the convertor leads screw into the panel I get 12 volts.. I'll get back on this sometime Monday.. thanks for your help..
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Old 04-30-2018, 11:50 AM   #8
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no 12v system in my 2011 Puma 19FS

I'll start over.. three months ago found no power to the trailer while storing with 120v hooked up.. I have trouble shot my 120v system and the GFI outlet was bad, replaced.. Have 120v on all outlets, micro wave and to the convertor.. No lights working in unit (maybe they are all 12v), the convertor with the battery removed from the system is putting out 13.5 volts to the fuse panel, all fuses are good in the panel and where the wires come to the panel I read 12v. the control panel for the A/C, refrigerator or the stereo is not working, I understand they are 12v..

It seems to me somewhere after all the 12v wires leave the fuse panel they have been cut or burn up or there is a breaker/fuse bad..

Help
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Old 04-30-2018, 12:00 PM   #9
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Have you checked those reverse polarity fuses? They are the red 40 amp fuses in the middle of the pic posted by fonzie in post #4.
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Old 04-30-2018, 12:31 PM   #10
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Yes.. if they were bad I should not have 12v at the wire leads going from the fuse panel would I?? I have 12v going out of my fuse panel and 12v on each side of those reverse fuses (mine are 30 amp)
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