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Old 07-30-2021, 04:47 PM   #1
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Inverter Fault

Good evening all. As luck would have it, the wife and I are to leave in the morning for a trip to Gulf Shores, AL and then probably on over to the Destin, FL area. Upon opening the cabinet door that houses the monitor panel, switches for the slide-outs and the Magnum Inverter/Charger Management Control Center. The display on the Inverter panel is showing "BACK FEED FAULT" and the Red Fault Light is illuminated and the Charging light is flashing. I've checked everything I know to check and even did a reset on the inverter according to an RV dealer in the area. I'm at a loss. Any help on this problem is greatly appreciated. Thank you.
Also, I've lost 110 VAC to the outlets in the Kitchen slide-out as well as the GFI in the bathroom. Thanks again.

Mike Files
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Old 07-30-2021, 07:25 PM   #2
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even did a reset on the inverter according to an RV dealer in the area. I'm at a loss.

There are two resets. Soft reset is via the button on the inverter.
A hard reset is done by disconnecting all DC power from the inverter and is a more extensive reset.
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Old 08-02-2021, 06:27 AM   #3
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Will I get the same result by completely disconnecting the house batteries? Or is that what you meant? Thanks!
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Old 08-02-2021, 06:39 AM   #4
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I had to totally disconnect all 12 volts before mine reset.
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Old 08-02-2021, 08:22 AM   #5
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I have had good luck calling Magnum's technical support when every other option has failed.
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Old 08-02-2021, 11:06 PM   #6
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Quote:
Originally Posted by mfiles View Post
Will I get the same result by completely disconnecting the house batteries? Or is that what you meant? Thanks!
You might. However I would disconnect the house and chassis batteries to make sure there is no back feed from the chassis batteries. This is the case on my coach.

Also make sure you are disconnected from shore power
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Old 08-03-2021, 06:26 AM   #7
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Thanks! Will let you know how it works out.
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Old 08-04-2021, 06:59 AM   #8
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Thank you! I did the hard reset via cutting shore power, disconnecting the ground from the chassis batteries and the coach batteries. Waited about 2-3 minutes then re-attached the battery grounds then shore power last. Worked like a charm! All systems working as they should. Thanks again!
Mike
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Old 08-04-2021, 02:04 PM   #9
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Glad to hear it worked for you.
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