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Old 07-09-2014, 12:37 AM   #1
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Question 12V lights just QUIT!


12V lights were working just fine Sunday night.
Turned them out as we went to bed.

Woke up Monday morning to no lights...night lights in electrical outlets, OK.

Checked fuses & OK.
Breakers, OK.

No, we do not have any deep cell batteries on the trailer.
Trailer has never been & never will be towed.

Could anyone give me some idea as to what happened?
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Old 07-09-2014, 12:45 AM   #2
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Ok, just so we're on the same page.
You were running the converter/charger when it was not hooked up to a battery.
If so I'm thinking the converter/charger tripped a circuit breaker , in the 110 breaker box or on the unit it's self, or packed it in completely.
I believe in the users manual for the units there is a warning about using them when not hooked to a battery.
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Old 07-09-2014, 12:56 AM   #3
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hhmmm...interesting

We have only had the unit less than 2 months & did not have battery & 12V lights ran just fine.

Inverter/converter is still humming & purring along.

Yes, we have electricity 24/7 to the trailer.

The only MAJOR change we did this weekend was remove the old leaky water heater & replace it with a new one.

NO power to the old water heater (it was all propane) but we do need to connect to 12V for the electronic igniter on the new water heater...but we have NOT pulled any wires from anywhere, as yet.

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Old 07-09-2014, 01:15 AM   #4
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If the converter is working, you should be able test the output voltage. Most likely a circuit breaker has tripped or a fuse has blown.

Chuck
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Old 07-09-2014, 06:05 AM   #5
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The converter has a fuse (or 2) , did you check the fuse on your converter. Get a voltmeter and measure the voltage at the converter. If it is working, the voltage will be around 13.5 volts, if it is not, the voltage will be 12.9 volts or less.
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Old 07-09-2014, 10:28 AM   #6
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Ditto on the check the fuses on the convertor...they are 30 amp or larger.
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Old 07-09-2014, 10:50 AM   #7
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Quote:
Originally Posted by Fred1609 View Post
Ditto on the check the fuses on the convertor...they are 30 amp or larger.
Fred1609
Except for the thousands of RV converters that have 15A and/or 20A fuses, (or circuit breakers). on them. .

The OP should check the fuses, (whatever amp they happen to be), OR the circuit breakers, (whichever is on his converter).

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Old 07-09-2014, 11:07 AM   #8
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Except for the thousands of RV converters that have 15A and/or 20A fuses, (or circuit breakers). on them. .

The OP should check the fuses, (whatever amp they happen to be), OR the circuit breakers, (whichever is on his converter).

Mel
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Probably not on the output. If it's humming the input is working. Converter outputs need to be 30 A or more for most uses. At 12 V that is only ~360 W. Not a lot of even lights.

FWIW I wonder about using a converter without a battery for more than lighting. The battery soaks up a fair amount of ripple and noise that may be there if no battery is used. Don't know for sure but I would think twice and maybe add a big filter cap.
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Old 07-09-2014, 08:52 PM   #9
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If its the convertor that's humming.....nothing like getting down and confirming that those "large" fuses on the convertor are ok. My buddy had the same issue where lights went out and all the breakers were fine as were the smaller blade fuses. The thing about blade fuses is that they might look ok but are not serviceable. Start with the small fuses and then check your "Large" fuses on the convertor.
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Old 07-11-2014, 03:43 PM   #10
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Thank You to all whom replied!

You gave us lots to think about & double-check.

We have decided to go with a new 12V deep cell battery & connect it to a battery tender (trickle cell charger).

We will also be purchasing a few LED plug-in lights & slowly remove & get rid of the original & traditional RV interior lights.
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