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Old 07-15-2015, 07:37 PM   #1
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Question Electrical @#$%^

My trailer has been stored by the house with shore power plugged in, but the battery fuse pulled.

I turned on the frig in auto mode and it started just fine. An hour later when I go out to install the battery fuse I notice that there is no power to the frig. I install the fuse and all power in the trailer comes on and the frig starts in gas mode.

I investigate to discover that the GFI inside my garage powering the circuit for the trailer had tripped.

I know the frig electronics runs off of 12V power, but is it by design that the frig will only run off of battery power, vice 12V converter power?

frig is up and running on 120V power now and all is well. It just makes me wonder.

Tim
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Old 07-15-2015, 07:42 PM   #2
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If the GFI hadn't tripped all would have been fine, when the GFI tripped in the garage you lost power to the converter. The converter or battery will supply the necessary 12 v. What caused the GFI to trip?
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Old 07-15-2015, 07:43 PM   #3
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The control circuit is 12v DC. No matter if it is on gas or electric.
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Old 07-15-2015, 07:51 PM   #4
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GFI circuits usually do not get along with campers very well. It has to do with ground bonding in the camper. GFI's don't tolerate it very well. Sometimes you can get away with it. Sometimes not. Looks like you found the 'not'.

Best thing to do is install a dedicated, non-GFI 30 amp circuit and receptacle on your garage.

Do not confuse this with the GFI circuit that is part of the camper itself. That is NOT the GFI I am referring to.
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Old 07-15-2015, 08:42 PM   #5
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Quote:
Originally Posted by norty1 View Post
The control circuit is 12v DC. No matter if it is on gas or electric.
X2

GFI's trip all the time especially in areas with high moisture. If it trips again replace the outlet.
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Old 07-15-2015, 08:57 PM   #6
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This is the second time this has happened to me. The frig won't work unless the battery is connected. I had assumed that the converter would provide sufficient 12V power to the electronics, but apparently not.

I will have to research how much power the frig electronics draw.
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Old 07-15-2015, 09:44 PM   #7
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Tjp, these guys are pros. I agree that the GFCI is probably not liking your TT. The fridge draws little power on 12v/propane. If it's feasible I'd leave the batt connected. It'll charge and take over if the A/C fails. Downside is you need to check on the breaker frequently to make sure things are good. That said, I plug the 5th and it's predecessor into a GFCI circuit with no problems, just no AC.
There's a chance your 120v heater in the fridge has a problem and is tripping the breaker. Try another circuit (non GFCI) to verify.
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Old 07-15-2015, 10:00 PM   #8
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Question, why pull the battery fuse, when at home connected to shore power?

The converter will power the frig controls when operating on propane, along with all the other 12v electronics.
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Old 07-16-2015, 05:24 AM   #9
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Quote:
Originally Posted by tjpolsin View Post
This is the second time this has happened to me. The frig won't work unless the battery is connected. I had assumed that the converter would provide sufficient 12V power to the electronics, but apparently not.

I will have to research how much power the frig electronics draw.
If everything is working correctly the converter WILL power the refrigerator control electronics. If it is not doing so now you still have a problem that needs to be found. The refrigerator electronics draws very little power. Your problem will not be there.
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Old 07-16-2015, 06:10 AM   #10
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Originally Posted by tjpolsin View Post
This is the second time this has happened to me. The frig won't work unless the battery is connected. I had assumed that the converter would provide sufficient 12V power to the electronics, but apparently not.

I will have to research how much power the frig electronics draw.
I am assuming that GFI had tripped both times. GFI's are very fickle. Like some others have said, get on a non GFI curcuit. GFI's are not a reliable source of power.
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