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Old 04-21-2012, 02:18 PM   #11
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The things that you are saying that are not working, furnace, lighting, all require 12v DC. These items run off your battery. Having your trailer plugged into AC keeps your battery charged/charging, but the AC don't actually run what's not working. So I would start testing at the battery.

#1. Using a volt meter what voltage are you measuring at the battery? Once you confirm voltage is a minimum of 12.5 volts then perform a load test.

#2. Using a load tester make sure the battery can maintain voltage when placed under a load.

If the battery passes both of the above test, check that both connections are clean & tight at the battery terminals.

If the battery fails either of the above tests, place your battery on a good charger and fully charge the battery. The re-test. If it again fails it's a bad battery. If it passes then you know the battery is good, but the converter in you TT may not be charging the battery.

One way you can test this is with the trailer unplugged (converter off) check your battery voltage will all appliances & lights off. Then plug the trailer in (converter on, battery should be charging) and again with everything else off check battery voltage. You should be reading over 13 volts if the battery if receiving a charge.

This much should get you started, re-post your findings and we can go from there.
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Old 04-21-2012, 02:18 PM   #12
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Thanks for all the helpful advice on this...now that it is light out I can see that a 25 amp converter polarity fuse was blown. Will replace it and see if everything works. Wonder why it blew?
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Old 04-21-2012, 05:33 PM   #13
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Glad you found the problem. I knew it had to be your converter based on the symptoms you described.
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Old 04-21-2012, 06:46 PM   #14
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Quote:
Originally Posted by Saskatooner View Post
snip..... I can see that a 25 amp converter polarity fuse was blown. Will replace it and see if everything works. Wonder why it blew?
Perhaps at some point, the battery was connected in reverse. Maybe before you took delivery?
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Old 04-21-2012, 10:10 PM   #15
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It could still be hooked up in reverse. Before replacing, I would trace the negative wire from the battery and make sure it goes to the frame/ground. Or buy 2 fuses, and if it blow again right away, then trace the cable

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Old 05-22-2012, 08:31 AM   #16
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Quote:
Originally Posted by cablerum View Post
The things that you are saying that are not working, furnace, lighting, all require 12v DC. These items run off your battery. Having your trailer plugged into AC keeps your battery charged/charging, but the AC don't actually run what's not working. So I would start testing at the battery.

#1. Using a volt meter what voltage are you measuring at the battery? Once you confirm voltage is a minimum of 12.5 volts then perform a load test.

#2. Using a load tester make sure the battery can maintain voltage when placed under a load.

If the battery passes both of the above test, check that both connections are clean & tight at the battery terminals.

If the battery fails either of the above tests, place your battery on a good charger and fully charge the battery. The re-test. If it again fails it's a bad battery. If it passes then you know the battery is good, but the converter in you TT may not be charging the battery.

One way you can test this is with the trailer unplugged (converter off) check your battery voltage will all appliances & lights off. Then plug the trailer in (converter on, battery should be charging) and again with everything else off check battery voltage. You should be reading over 13 volts if the battery if receiving a charge.

This much should get you started, re-post your findings and we can go from there.
Thanks for your help on this. Now that we've had the 5th for a few weeks we notice that the reverse polarity fuse blows regardless of load...ie everything works fine for days and then a fuse blows for no apparent resaon...I haven't purchased a surge protector yet...could that be the problem? (ie high/low voltage) Is that the fuse that would blow if there were a surge condition?
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