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Old 06-27-2012, 11:13 AM   #1
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No Power

While connected to shore power, our 2007 27' FB Classic Limited lost power over night. The batteries are old, maybe even the originals. Is this a battery replacement issue only, or is there some other problem, such as the converter. Seems to me that if you're plugged in, you should still have juice.
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Old 06-27-2012, 11:37 AM   #2
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If you have power at the 120 volt wall outlets then it is time to be looking for battery/converter problems. Assuming that you have already checked for tripped breakers etc.

If you do not have power at the wall outlets then you are likely not getting any power to the trailer
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Old 06-27-2012, 02:54 PM   #3
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There is 120 power to the outlets. If I replace the batteries, how will I know if the converter is working? After reading some of the other posts, sounds like it might be a good idea to replace the one-stage paralax converter also. If my converter is not working correctly, will I damage the new batteries?
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Old 06-27-2012, 03:04 PM   #4
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one of the little 12 volt plug in meters will tell you a lot about the converter and the batteries for about $20. If you are getting around 13.5 volts in the 12 volt system with it plugged in then the converter is probably working. If not, probably it is bad. Is there a switch to cut the converter off? Somtimes it is that simple. I now just keep a 12 and a 120 volt meter plugged in to the appropiate outlets. Lets me know when the batteries are discharged enough to start hurting them also.
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Old 06-28-2012, 01:56 PM   #5
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Bill,
I decided to purchase 2 new AGM batteries and installed them. With batteries connected and shorepower on, my multimeter reads 12.59 at the posts of each battery. Does that mean my converter is not working?
John
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Old 06-28-2012, 05:58 PM   #6
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If your meter is correct then your converter is not working, could be turned off, unplugged, a bad fuse or dead.
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Old 06-28-2012, 07:15 PM   #7
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Quote:
Originally Posted by vhaalen
Bill,
I decided to purchase 2 new AGM batteries and installed them. With batteries connected and shorepower on, my multimeter reads 12.59 at the posts of each battery. Does that mean my converter is not working?
John
A fully charged battery, with no load applied will read about 12.7 volts. The output of the converter with the batteries attached will generally be about 13.6 volts. Some may read as high as 14.4 volts when in a full charge cycle, and as low as 13.2 volts in a float cycle.

Be sure your Use/Store switch is in the Use mode to permit charging. Reset the breaker (switch it On-Off-On) that supplies the converter to be sure it's on. Test the 2 fuses on the DC fuse panel located above the converter. If all checks okay and you don't read 13+ volts, the converter is suspect.
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Old 06-28-2012, 07:48 PM   #8
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Once you confirm your problem is the converter, if I were you, I'd put the Battery Disconnect Switch to "Store" position to protect your new AGM batteries and obtain and install a new converter as soon as possible.

I went through this 4 years ago as seen here.
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