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Old 06-19-2011, 09:31 PM   #15
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You need to find out why the AC fan is affected by the GFCI breaker. It should not be on this breaker. This, in my opinion, is the problem.

If you don't turn on the AC fan, does the GFCI breaker trip or is it OK?

In response to your other questions, no you can't just install bigger breakers. They are sized to protect the current carrying capabilities of the wires connected to them. The same thing is true of 12v fuses. The idea is to keep the wires from melting due to overload.

By the way, nice birthday cake. Happy belated birthday!

Don't get discouraged, we'll figure this out between all of us.
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Old 06-19-2011, 09:47 PM   #16
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I agree: don't increase the size of the breaker.
When you say the fan goes off on the AC when the breaker trips. I think there is something fishy about that.
If you can unplug the converter and run the fan without tripping the breaker. Check to see if you can run the AC in the "cooling" mode. That means that both the compressor and fan motors are running. Then turn the circuit breakers off one at a time and see which one shuts off the compressor motor; you should then check to see if the fan motor is off as well.
As far as I know there should only be one circuit breaker that feeds the AC unit providing power to the fan motor and compressor motor.
If you remove the interior shroud on you AC unit, you may find an electrical drawing posted somewhere one the sheetmetal inside. If you can get a photo of the drawing and post it here we can determine if 2 breakers are required.
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Old 06-19-2011, 10:20 PM   #17
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DC wiring

In looking at the photo you posted of the converter. I have a question or two.
Do you know where the RED, BLACK and WHITE wires go that you have connected?
The reason I ask is that most trailers use the black wire for the 12 volt DC positive and the white wire is the 12 volt DC negative/common. You can verify this by going to the 12 volt fuse panel and see what color wires feed it.
Once you verify the colors, then the third color is probably the one that goes to the monitor panel. What ever color it turns out to be for the indicator light should be connected to the positive output of the converter. Because the indicator light will already be connected to the negative/common side just like all other 12 volt devices in the trailer. You may be able to determine the wire color of the indicator light by opening the monitor panel to see what the wire colors are.
Judging from the size of the three wires, the third wire does more than just power the indicator light. It probably powers the entire monitor panel. I don't have a monitor panel in my trailer so I only making an educated guess. What all is the monitor panel doing?
Battery info? Tank level info? Pump power? etc.
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Old 06-19-2011, 10:24 PM   #18
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My Excella is only a year older than you Airstream, and the breaker boxes are identical except that mine has a bar connecting the two big breakers so they respond as one. I'm guessing that yours did too originally. Mine also has one of those little blue stickers like you have at the bottom of your photo. It looks like the one on top of yours has fallen off. Mine still has one that says "AIR COND" above the twinned large breakers. See the photo I have attached below. (The photo is large enough that you can read everything if you click on it to enlarge it.) These two breakers that act as one supply all the power to the AC system.

If you are getting power to any of the AC system from another circuit, something is wrong.
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Old 06-19-2011, 10:54 PM   #19
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"As far as I know there should only be one circuit breaker that feeds the AC unit providing power to the fan motor and compressor motor". That's why I come to this site, you learn something everyday.


The photo clears up a lot. If the bar is missing maybe the PO has done some "creative modifications. Further investigation will be required. Since it doesn't make sense that the fan shuts off when the GFI trips.
UNLESS the fan is thermostatically controlled thru the monitor panel and the 12 volt power for the thermostat is provided by the converter.
Just a guess. Is there a good battery in the trailer? Do the 12 volt lights work with the converter unplugged?
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Old 06-19-2011, 11:11 PM   #20
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You folks are great. Will look more tomorrow!
1) Will not increase breaker size
2) Yep, panel is tank levels, battery condition, ac indicator light
3) I actually think the bar is there connecting those two breakers up top but will have to re-look
4) Not sure where colored wires actually go, but re-hooked them according to directions on old univolt. It said red was positive and white neg. I disconnected the black line but can reconnect to positive tomorrow
5) 1st time the breaker tripped I had nothing on but the converter. Turned on an overhead light and ---pop
6) afterwards it popped when I walked around turning on everything.
7) And I absolutely love the PO's, but there is a lot of black electrical tape in this trailer..
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Old 06-20-2011, 08:30 AM   #21
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what happens if you disconnect the converter, turn on the air c. and turn off that gfci breaker. if the air goes off it is wired to the wrong breaker. not being able to cook with the ac can be irritating along with having to reset the clock every time.
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Old 06-20-2011, 09:28 AM   #22
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Atomic clock. No resets. (-;
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Old 06-20-2011, 10:54 AM   #23
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Older GFI breakers are know for wearing out. Replace it with a modern one.
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Old 06-20-2011, 07:10 PM   #24
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OK, finally got off of work, bought a new GFCI breaker, but...My wife has informed me I HAVE to cut grass. Sigh...Back to the Airstream tomorrow...
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Old 06-20-2011, 08:32 PM   #25
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Woo Hoo.... We may have had a birthday miracle. Battery was dead in the mower (not really GOOD news) but...because I could not cut the grass I was able to go back to the inverter. Connected the mystery black wire into the positive terminal on the 9260 and Eureka! Everything works...

Now, I still want to check some things out, like do I really have the ac compressor or fan on the wrong breaker, is something else tied into the ac breaker? etc...

But all in all I think I am ok. Still need to connect the TV and make sure everything works before I raise the Final Victory flags.

One question for anyone with an InteliPower 9260. How often does your little vent fan in it run? I have not seen mine turn on yet, at all.
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Old 06-20-2011, 08:41 PM   #26
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The vent fan works off of the temp inside the trailer. the cooler it is the less it runs the hotter it is the more it runs. Having said that mine runs every once in a while cycles on and off. It is very quiet . Some times I have to get real close to it to hear it run. Glad you got it figured out. Sounds like you might want to get your wife to buy a new battery for the mower next week!!!
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Old 06-21-2011, 04:49 PM   #27
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Hi casa,

I appreciate the thanks.

I don't know how much more help this will be, it is pretty basic. I scanned the 120 volt section of a 1984 Service Manual (4 pages) and attached a pdf below. The diagrams show only one line from the AC (Grounds are not illustrated to keep the diagrams simple, I guess.) to the breaker box, but the breaker box diagrams don't really show what wires come from where in the trailer. The breaker box diagram also doesn't show the 20 amp breaker between the 30 amp Main and the 15 amp GFCI breakers that you can see in both our photos. Anyway, maybe you will find this useful.

They don't have Service Manuals for 1983, so I got the one for 1984. You can get copies from Airstream at https://store.airstream.com/product_...products_id=96. They are $60, but well worth the investment. The Owners' Manuals are also available, but I almost never look at the one I got. The Service Manual is the useful one.
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Old 06-21-2011, 06:45 PM   #28
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Thanks again Vaughn, I bought the owners manual but it is pretty pointless. I will go back and get the service manual. Dang this is an expensive free site! But I will definitely chase down the ac thing. Right now I am just tickled the converter is working. Now I can focus on installing floors...
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