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Old 06-13-2010, 09:30 AM   #1
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Flagstaff 228D - can't get 12V items working

We just bought a used used 2001 Flagstaff 228D. I've ordered an owner's manual (which can probably answer my question), but while I'm waiting I thought I'd post this problem.

When the trailer is plugged in to 110v, none of our 12v items work in the trailer - namely the lights and the furnace (with propane on & working). Everything looks good at the power converter panel, and the 110 outlets work. I cannot find a battery, nor any place to mount or plug in a battery. But is my problem because I don't have a complete 12v circuit?

Where should the battery be? I haven't found any wires that attach to battery posts, so if I'm missing an entire connection kit, is there a plugin I should look for where the kit would plug into?

thanks for helping out a newbie!

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Old 06-13-2010, 09:49 AM   #2
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Welcome to FRF.

As far as I know, the battery should be mounted on the tongue, next to the propane tank. Also, the 12V circuits should work without a battery connection, when plugged into shore-power.

Have you checked the 12V fuses in the convertor?

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Old 06-13-2010, 10:14 AM   #3
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Also, check out this thread. It mentions a hidden fuse behind the power converter.

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Old 06-13-2010, 10:39 AM   #4
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my guess is there is no battery or it's dead and won't battery no 12V power to any of these circuits. I assume all the converter will do is charge the battery...not supply power to 12V circuits due to the amount of current required. the battery terminals are crimp on round lugs ... they wont be like a big ol' lead automotive terminal. Looking at another forum they say the battery is up front.
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Old 06-13-2010, 11:46 AM   #5
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The converter provides 12v power. No battery needed. Dead battery, no battery, all 12v circuits are hot if the main breakers are closed. Check breakers and fuses.
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Old 06-15-2010, 11:50 AM   #6
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Is the galley in the raised position? There is a safety switch under it that will prevent the lights from working if the switch isn't depressed by the galley.
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Old 06-16-2010, 12:37 AM   #7
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Thanks everybody for the tips. I'll set up the trailer this weekend and see what I can figure out. I've looked at the fuses & they didn't look burned, but I didn't check continuity, so I'll do that. The galley was in the raised position, but I'll mess with that switch (I wondered what it was for exactly) and see if it's not engaging completely. I figured the battery went on the tongue, there's space for it, but no wires and no obvious place for wires to go inside the trailer from there.

Its got to be something simple, the people we bought it from had the lights working when we went to see it.

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Old 06-16-2010, 06:07 AM   #8
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There may be a disconnect switch in the off position from battery.
Once you find the battery test voltage
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Old 06-16-2010, 07:15 AM   #9
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Lightbulb Check the reversed battery fuses

In the converter charger there are two "reverse current" fuses (orange) next to the DC circuit fuses (mostly blue 15 amps).
They do not "light" when blown.

Check outside on the tounge for a red wire. Follow it and look for a little metal box covered with a red rubber cap. Clean the connections with fine sand paper. A corroded current limiter could be the cause also.

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Old 06-16-2010, 11:00 AM   #10
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Try reading this for indicators as to the nature of your problem.
All About RV Converters

Happy Camping! ///// Richard D.
2006 4x4 Ford 250 SD / 2007 Flagstaff 827 FLS
One very patient wife and one furry child who travels with us. Forty-two years of trailering and camping, and I still have a blast.

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228d, electrical, flagstaff, tent camper, 12 Volt, battery

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