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Old 02-18-2016, 06:09 PM   #1
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refer tripping GFI

Got a Dometic Rm something vintage 1997, just replaced the circuit board.
Works great on Gas, but once I switch to AC GFI trips after about 2-3 minutes.
Where can I start looking?
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Old 02-18-2016, 06:40 PM   #2
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Unfortunately, you shouldn't be running the refrigerator on a GFI. The reason is that the insulation resistance of a heating element is not as good as the insulation resistance of ordinary room temperature insulation and there may be enough leakage to ground to trip the GFI.

If you can't move the refrigerator to a non-GFI protected circuit you might try replacing the heating element, in the hope that the new one will have less leakage.
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Old 02-18-2016, 09:21 PM   #3
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Peter is GFCI in the AS or home panel?
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Old 02-18-2016, 09:55 PM   #4
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Peter is GFCI in the AS or home panel?
Its factory in the Airstream panel. Got a new toy, Channing 1997 30'. How did they wire the fridge in your 1999?

Thanks Nuvite-F for the reply
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Old 02-18-2016, 10:51 PM   #5
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I'm betting thkat as the heating element warms up, a leakage to ground is created. I'd replace the element rather than move the fridge to a non-gfi circuit.
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Old 02-19-2016, 06:29 AM   #6
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I'm betting that as the heating element warms up, a leakage to ground is created. I'd replace the element rather than move the fridge to a non-gfi circuit.
Makes sense, since its an inexpensive replacement.
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Old 02-19-2016, 07:52 AM   #7
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Makes sense, since its an inexpensive replacement.
Peter.. agreed I would try replacing the GFCI as on mine.... Now, on my 1999 there were no GFCI.. inside or out. I made a mistake and "bonded" the neutral and ground... GFCI would pop within a few seconds...

One thing to note.. I have had GFCI go bad... then make sure there is no 'bonding of the wiring...

Since the AS is older, I would take an extension cord on a GFCI circuit and plug the FRIDGE ... if GFCI pops... then the problem is in the FRIDGE...
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Old 02-19-2016, 10:44 AM   #8
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Is it a 15 amp or 20 amp gfi?
15amp are well known for false trips. More so as they get older.
20 amp not so much.
I either case, I would replace the gfi with a new one.
Probably solve your problem.
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Old 02-19-2016, 11:08 AM   #9
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Looking at the title of the thread my first thought was, maybe you shouldn't be smoking that stuff in the airstream!
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Old 02-19-2016, 05:59 PM   #10
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Quote:
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Peter.. agreed I would try replacing the GFCI as on mine.... Now, on my 1999 there were no GFCI.. inside or out. I made a mistake and "bonded" the neutral and ground... GFCI would pop within a few seconds...

One thing to note.. I have had GFCI go bad... then make sure there is no 'bonding of the wiring...

Since the AS is older, I would take an extension cord on a GFCI circuit and plug the FRIDGE ... if GFCI pops... then the problem is in the FRIDGE...
Yup, popped the GFCI with an extention cord in my shop as well. Time for a new heating element.
Thanks everyone for your input
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