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Old 07-02-2015, 07:59 PM   #1
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12 volt problems

I Have 12 v when connected to shore power, 120 ac volt, disconnect and the 12 volt system wont work, checked fuses & breakers ,batt is @ 12.5 volts.
all check out fine. any ideas
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Old 07-02-2015, 08:01 PM   #2
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see if you have a fuse in-line with the Pos Battery terminal Should be a 30 amp fuse
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Old 07-02-2015, 08:06 PM   #3
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Checked all fuses, all are good
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Old 07-02-2015, 08:11 PM   #4
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and how did you check the fuses??
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Old 07-02-2015, 08:30 PM   #5
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don't forget to check the fuse or fuses in the converter behind your breaker panel.
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Old 07-02-2015, 11:24 PM   #6
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Also check the ground from the battery to the trailer frame. Loose, or dirty connection where negative cable terminates to frame
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Old 07-06-2015, 06:45 PM   #7
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Ditto Jmooney. Just had and fixed the identical problem.
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Old 07-12-2015, 09:44 AM   #8
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I'm having the same problem. Battery charged, ground checked. Fuses checked. Water pump and lights work but no refrigerator or furnace. Full propane; outside grill works fine. I'm thinking it's the converter. What do you think?
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Old 07-12-2015, 07:51 PM   #9
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Question Similar issue experienced

I have a similar issue. I replaced my 12v converter. Now I get lights and outlet's work, but AC and fridge don't work. I understand that the AC and fridge need the 12v battery connection. Every time I connect the battery the inline fuse shorts. I just don't know where to start with looking for where the short is...

Would anyone be able to point me in the right direction? Thanks in advance!
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Old 07-12-2015, 08:00 PM   #10
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Both the converter and battery connect to the power center , Feeding DC power to the distribution buss, where each appliance loop ( lights, fridge, heater, etc.. ) have a separate inline fuse, In addition to the main fuse between the battery and the power center

If you have DC power at the power center, either because you are on shore or battery, you should be able to find 12vdc with a meter. If a single appliance is not working, start checking individual output fuses.
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