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Old 10-01-2018, 09:59 PM   #41
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Brand: Thor Motor Coach
Model: Aria 3901
State: Idaho
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I'm just sad for you.
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Old 10-01-2018, 10:16 PM   #42
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Brand: Thor Motor Coach
Model: Aria 3901
State: Maine
Posts: 21
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Originally Posted by DrTerriEdwards View Post
We do have that issue, but now another one. Our windshield was damaged by a hail storm and we ordered a factory one to replace. It was to be put on last Thursday. The one ordered did not fit. The company says it is Thorís fault due to the shape of the window and Thor said to try another manufacturer. The problem is, we cannot drive the RV and we live in it. Since last Thursday and until someone helps us, we are parked behind a shop owned by Wade's RV in Oklahoma. We are almost ready to quit on our dream of travel. We still get wet in bed when it rains, and we can see outside under the furniture, because no seals were installed inside on the slides. We are not happy with our 2019 Aria 3901, to say the least. We are very positive people, but we are wearing down stuck by a pile of tires and with no septic. : (
I am so sorry you are having so much trouble. We also bought an 3901 Aria and had nothing but trouble with it. I told my wife, I am not spending my retirement years fighting with this unit which will never be right. After owning for 1 year, we traded for a Tiffin product and are now happy again. It cost us a lot to trade out of it but I am so glad we did. Good luck. I hope you find happiness in your travels. Life is short, don't suffer, TRADE.
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Old 10-01-2018, 10:27 PM   #43
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Brand: Thor Motor Coach
Model: Palazzo 33.3 34'bunkhouse
State: Alabama
Posts: 1,716
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Originally Posted by Tebo53AZ View Post
Mine was kicking all the time. Bought and installed a heavy duty commercial GFI and it has worked fine ever since
This is a good example of why I think that the raw 'assumption' that just because you have a modified sine wave inverter you somehow can't operate GFCI outlets, or especially the 'newer' type....but my thought is that it is really the OUTLET that is the issue, and/or the wiring, but NOT the inverter itself...

try changing out the GFCI to a 'regular' type, and I'm sure you'll have no further issues... that seems a lot simpler and much more economical that thinking you have to change out an inverter.

Our Magnum ME2012 has worked flawlessly for over four years and 85,000 miles and a LOT of dry-camping overnights, 580 hours of generator use, and many various and different types of shore power, 15a, dual 15/15amp, 20a, 30amp, dual 20/30 amps, dual 30/30amp, 50amp(100amps), etc., and never any issue with our GFCI outlet/circuit.
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Old 06-02-2019, 04:55 PM   #44
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State: Arkansas
Posts: 16
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My Aria is 2 yrs. old now and still has the same issue with tripping the GFi.
Called and called and email Thor Customer Service and they contacted one of their top engineers and he said they were unaware of any GFI issues with Aria. I sent them several threads of other Aria owners complaining about it and now I get SILENCE. NO CONTACT. They must have tried checking one and all got electrocuted.
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Old 06-02-2019, 05:49 PM   #45
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State: Arizona
Posts: 11
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I think they are using a cheap off the shelf one. As soon as I changed it out for a commercial rated one, it has never tripped unless I use a tester on it
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Old 06-03-2019, 01:21 PM   #46
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Brand: Thor Motor Coach
Model: Aria 3901
State: Iowa
Posts: 17
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Mulva, Disconnect the power cord so you are running off the inverter. Plug something into the outlet above and to the left of the sink. If the outlet works nevermind. If it don't work see my earlier post in this thread. You can call 319-269-1438 if you have questions.
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Old 06-03-2019, 02:31 PM   #47
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Model: Fleetwood Storm 32V - pre
State: Alabama
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I concur with the suggestion to try replacing the GFI outlet. Especially if everything has been fine for the last two years and youíve not done anything differently. They do go bad sometimes - especially the cheap ones. And there can be little doubt that Thor buys cheap and in bulk so thereís bound to be the occasional bad one. Itís cheap and easy to try.
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Old 07-28-2019, 11:15 PM   #48
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State: Arkansas
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I continue to listen to ďother thanĒ Aria owners comment on the GFI issues and downplay the aggravation and concern that other Aria owners have. Itís frustrating to NOT HAVE a solution. Thor is useless, their dealers are clueless, and to exchange the GFI doesnít do anything to help the situation. Iíve had electricians look at the problem. They think that Thor should know the issues and have a solution, BUT when questioning Thor, they will tell you that they havenít heard of these issues. Bullshit, I say. They know about it and it requires a modification and they arenít in the business of providing support or resolution, just selling as many as they can. Wonít catch me buying another Thor anything, nor recommending Thor to anyone.
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Old 07-29-2019, 12:00 AM   #49
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Model: Hurricane 32A
State: Florida
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I do understand the frustration... I see multiple distinct issues reviewing this thread...
- Possible incompatibility of some GFI outlets with MSW inverters...
- Improperly wired (shared) neutrals between GFI/non GFI circuits...

For some, replacing GFI or inverter seemed to work... but would do nothing in the case of shared neutral downstream...

Something possible to try... how many outlets require GFI protection?
(Typically those within 6í of sink or outside... guessing one in (each) bathroom... one in kitchen... one or two outside)
Thor uses one GFI to provide protection... but if you can determine to flow of outlets, on the existing GFI, move the downstream wiring to the Ďnon protectedí side... ie GFI only protecting the ONE outlet... Install a new GFI in the second outlet in line, and see if problem goes away.. eliminates the wiring between 1 and 2 as issue.... Can continue down the line adding or moving... You could have individual GFIís each protecting only one outlet - which would remove any coach neutral wiring issues.
(Or just as test swap regular and GFI outlet moving the GFI downstream until you find where it doesnít trip...)
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Old 08-01-2019, 02:53 PM   #50
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Brand: Thor Motor Coach
Model: Palazzo 33.3 34'bunkhouse
State: Alabama
Posts: 1,716
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I recently had my bath main GFCI trip, BUT, it was because I plugged into a shore power GFCI 20amp outlet - the two do not always play well together - and it's not something 'wrong' with my Modified Sine Wave inverter, the Magnum ME2012, or the onboard GFCI in the bath, or the wiring in the RV - it's because two GFCI 'outlets' don't like each other, one is outside, one is inside.

Now, my GFCI only controls 'some' of my outlets, as another circuit or two have their own 'normal' breakers. When the GFCI tripped, when I plugged in, nothing changed in my coach, because I had nothing plugged into the bath outlet, nothing plugged in and ON in the kitchen, nothing in the outside bay outlet, etc., so I 'noticed' no change.
It only became evident when my wife had no power at the coffee maker the next morning... prompting me to remember that hearing the 'pop' when I plugged into the shore power GFCI the day before should have reminded me.

For me, it was not a big deal as I was only on this shore power GFCI outlet to run this test. I've been on GFCI shore power outlets before, and nothing changed... this one proves that 'some' GFCI outlets just don't play well together - which one you 'get' may determine whether it will work, or not. I don't know if it's because of differing manufacturing of the outlets, how they are built, wired, etc., or maybe if the neutral is switched on one, versus the other.

Now, this had no impact on my Inverter, or impact FROM my inverter, even though I have this GFCI circuit AND the other outlet circuits run thru the Inverter's output sub-panel, and through the same sub-panel's main 30amp breaker.

Who knows, but the MSW inverter has nothing to do with GFCI issues - it simply passes thru 120v shore or gen power from the ATS(auto transfer switch), or from the Inverter when it is providing the power. Could a 'redesign' of an MSW inverter create issues with some GFCI outlets? Possibly. It wouldn't be Magnum or the inverter's fault. It wouldn't be the GFCI outlet manufacturer's fault. It would be just a sad situation. Could the RV manufacturer 'test' this before completing the build. Sure. Maybe they do, and maybe it works fine at the factory.
Maybe there was simply a loose wire at the Inverter that was not caught, before replacing it with another. I imagine replacing it with another MSW unit might have actually shown a solution. But, that's just my guess.

I think changing from a MSW to a PSW inverter is only correcting the symptoms, but probably not changing any underlying 'problem' of why the two don't work well together. The GFCI outlet is more than likely the culprit, as much as we might not want to believe it is.
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Old 08-07-2019, 09:21 PM   #51
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Brand: Thor Motor Coach
Model: Aria 3901
State: Colorado
Posts: 50
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Fyi I viewed a 2020 Aria this week and noticed they have changed the inverter from the modified ME2012 to pure sine MS2012 inverter.
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