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Old 10-01-2014, 09:33 AM   #1
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Running the Air-Conditioners While Traveling

if we are traveling and want to run the roof air-conditions do we have to turn off the xantrex charger so we can run the generator?
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Old 10-01-2014, 09:39 AM   #2
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No. Unless there is some non standard wiring your inverter/converter should not see any difference between shore and generator power. Most people simply leave their inverter on all the time.
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Old 10-01-2014, 03:34 PM   #3
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On mine, Zantrax is very specific in stating that the inverter should be in the "OFF" position if on either shore power or generator. Since you will need the generator in order for the AC units to operate, turning off the inverter would be wise. Just my experience, your results may vary.
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Old 10-01-2014, 09:03 PM   #4
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The Magnum inverter has no such warning. As a matter of fact, it talks about the inverter kicking in in the event the power drops below a pre-set voltage level to boost it. If you have good shore power or good generator power, the inverter being on should not do anything. Shore power powers the circuits connected to the inverter. But the inverter will kick in when the power drops.

That said, I typically don't turn on my inverter if I am connected to shore power. But I do turn it on if running the generator, so that the inverter will continue AC power to my DVR when I turn off the generator, to keep it from rebooting.

The inverter does not power the AC circuits, of course.

I often run the generator to power the roof AC while going down the road. As the outside temp approaches 100 the dash air can't keep up.
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Old 10-02-2014, 09:04 AM   #5
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The Xantrex is an inverter/charger. If you turn it off when plugged into shore power, how are you going to charge your batteries?
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Old 10-02-2014, 10:48 AM   #6
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There are two functions of the Xantrex. One is to charge the batteries when connected to shore power or the generator. The second is to invert the DC power to AC, primarily when you are not connected to shore power nor running the generator. Each can be controlled separately. You can turn on the charger without turning on the inverter, and vice versa.

The default is for the charger to automatically turn on when you plug into shore power or run the generator. The inverter has to be turned on. It does not automatically turn on. The inverter is intended primarily to provide AC power to some circuits when you are not connected to shore power or running the generator.

Obviously you can't charge the batteries without shore power or the generator, so the charger is turned off during those times. And the inverter uses some power even when no AC is being used, so you may not want to use it all the time when not on shore power. So it does not turn on automatically.
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Old 10-02-2014, 10:59 AM   #7
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Every model and year of, converter/charger/inverter will differ, so always best to check the users manual, for specific instructions.

EDIT: Jeff's older RV may have a separate , inverter , with a manual by-pass like mine , not an all in one.
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Old 10-02-2014, 11:10 AM   #8
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I don't recall the details, but there's been some discussion in the past about running your generator and air conditioner while underway. It seems that the charger interferes in some way with the generator while the main engine is running. Apparently the generator gives an error error code and shuts off. This can be avoided by shutting off the inverter charger first. You should be able to find more information about this in past discussions on this site.
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Old 10-02-2014, 11:46 AM   #9
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FWIW I have also looked at a couple of Magnum manuals when folks had a question. The one's I saw automatically switched to the generator or shore power when it was available.
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Old 10-02-2014, 05:45 PM   #10
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Nothermark, that's true with mine, if the inverter was turned on. It does not automatically come on every time the shore power is disconnected.

John, on my '04 the charger comes on automatically (with the old Xantrex or the new Magnum) whenever there is shore power or the generator is started. I have never turned it off when going down the road, and never had a problem. So something is different.
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Old 10-03-2014, 07:23 AM   #11
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There has been much discussion about running the generator and engine at the same time. Feedback through the Xantrex will shut down the generator. Suggest you search the Alpine forum for details.
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Old 10-03-2014, 09:21 AM   #12
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In our Apex with Silverleaf and Vansco, I leave the inverter/charger on all the time with no generator shut down issues. I have the new SW2012 Xantrex. Silverleaf had to run a dedicated twisted pair to the TM102 because the SW2012 was sending multiple codes through the J1939 bus causing the Cummins to freak out and shut down.
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Old 10-04-2014, 04:37 PM   #13
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I have a 2005 Alpine Coach with a Xantrex Inverter. I run my roof A/C units with the generator ON & the inverter OFF. I only turn the inverter ON when the generator is OFF and I have never had a problem.
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Old 10-04-2014, 08:26 PM   #14
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Quote:
Originally Posted by tjshively View Post
I have a 2005 Alpine Coach with a Xantrex Inverter. I run my roof A/C units with the generator ON & the inverter OFF. I only turn the inverter ON when the generator is OFF and I have never had a problem.

This is how it works for us.
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