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Old 08-20-2011, 09:31 PM   #1
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Smile Electrical problem AC related to 12 volt?

Hi
We just purchased a 2006 safari. We have used it twice now and both times had problems with the AC. The first time we could not get the AC to work and stay on. We took it in to a Service Man and he found nothing wrong. We check the Campground for voltage etc. We even put the refrig on gas and turn everything off but the AC.
This last time out. We were gone for 5 nights. We found that if we turned the 12volt light on above the sink the AC came on. If we turned it off it would imediately shut off and stay off. It would not come back on, no matter how hot and hw far you turned the thermostat down.
Has anyone ever experienced a similar problemlike this? Could this be a bad thermostat or something with the wiring? We were told everything worked fine so we are not sure how it worked before.
Any information would be appreciated.
Thanks
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Old 08-20-2011, 11:22 PM   #2
jm2
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wow! that's a sort of unusual condition for the a/c!

I really don't know your unit at all, but I'd start with the instructions in your manual for the a/c. then I'd be getting a set of 12vDC and 120 vAC circuit drawings for your unit - also might be in your factory manual? if not, AS customer service in JC, Ohio should be helpful with that.

next would be someone who's good with an electrical meter to trace & test. I'm guessing that somehow. somewhere, there's a misconnected 12vDC supply lead into your controls.... the right supply wire is probably in the existing harness in the ceiling or the wall?

let us know what you find?

best,
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Old 08-21-2011, 08:43 AM   #3
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was the light on when the service man checked it?

i'd check to see if someone wired the air conditioner 12v to the switched light circuit.
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Old 08-22-2011, 06:35 AM   #4
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I can't remember if the the 12V light was on or not with the service man. There is a good chance it was so he could see.
We are going to just go over and talk to him today with the information and see what he says.
Thanks
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Old 08-22-2011, 07:01 AM   #5
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was the light on when the service man checked it?

i'd check to see if someone wired the air conditioner 12v to the switched light circuit.

Would the thermostat, (temp control) be the only 12v for the AC?, if so I think Rich nailed it. Find that wire at the light and put it on the non switched side.

Bob
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Old 08-23-2011, 04:03 PM   #6
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I found out alittle more information. No the Serviceman did not have the lights or any of the 12V items on.
Later on second outting...
We did notice that the 12v items produced a drag on the fantastic fan and like the radio when you switded the lights etc. This morning we connected the unit with power for the 110 supply as we don't have 30 amp at our home. We fired up the furnace and wanted to see what would happen when we tried turning on the lights. Oddly enough instead of a drag it made it increase in power, but remember we are running off battery and only 110 plug from house. Our Batteries (2) are Lifeline sealed Solar RV batteries because we have the factory installed solar system. Does this sound like a charging problem, converter? The Batteries show a charge.
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Old 08-23-2011, 05:04 PM   #7
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I found out alittle more information. No the Serviceman did not have the lights or any of the 12V items on.
Later on second outting...
We did notice that the 12v items produced a drag on the fantastic fan and like the radio when you switded the lights etc. This morning we connected the unit with power for the 110 supply as we don't have 30 amp at our home. We fired up the furnace and wanted to see what would happen when we tried turning on the lights. Oddly enough instead of a drag it made it increase in power, but remember we are running off battery and only 110 plug from house. Our Batteries (2) are Lifeline sealed Solar RV batteries because we have the factory installed solar system. Does this sound like a charging problem, converter? The Batteries show a charge.
starship.

I think we may be getting a little off-track here. Even if you don't have a 30Amp outlet, (which is only needed for the microwave & AC), when your plugged into the household 110v outlet the Airstream converter is supplying the 12v to all components AND charging the batteries. I would leave it plugged in for at least 24hrs and then look at the 12v supply for the thermostat, that is probably the one thats connected to the light switch, it can be wired to a constant 12v supply.

Bob
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Old 08-23-2011, 07:44 PM   #8
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Bob Do you think there still could be a wiring problem?
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Old 08-24-2011, 06:02 AM   #9
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Question I neglected, have we got this right?, the AC ONLY works when the light is ON, and when on the thermostat is working properly?
If thats correct the thermostat is most likely wired to the switched 12v supply. The question is where, if it's at the light itself it should be a pretty straight forward fix.

Is the thermostat on the AC or a stand-alone like this?

Pic's of the light switch might help.

Bob
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Old 08-25-2011, 02:47 PM   #10
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Bob
The AC worked for the Serviceman at his shop without the light on.

It would only work for us when we had the light on at the Campgrounds.

The Thermostat looks like the one you showed it operates the AC, Heat pump, and Furnace.
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Old 08-25-2011, 04:57 PM   #11
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Starship,

Well, if it worked for the serviceman in the shop with the light out....

Then ground control to Major Tom.....we have a problem.

The light orbiting around my head just went out also.

You can't run the AC at home 'til you get a 30a outlet.

Lets wait.....when thats done we can play more.

Bob
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Old 08-27-2011, 09:51 AM   #12
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How long did you wait after turning the thermostat to "cool". Ours sometimes has a long delay before the AC actually comes on. Any chance that delay could be at play here?
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Old 08-27-2011, 11:45 AM   #13
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The long delay is, I believe, normal to the combination H/P ,A/C units. Mine takes about a minute to start. My friend's unit is that way also.
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Old 08-27-2011, 01:49 PM   #14
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