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Dometic rm4223 won't run on 110v and trips GFI in trailer

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Dometic rm4223 won't run on 110v and trips GFI in trailer Randy Peppers 7-18-08  
Dometic rm4223 won't run on 110v and trips GFI in trailer. 12 volt system is not working also. Any help would be very much appreciated.

Thank you, Randy
Re: Dometic rm4223 won't run on 110v and trips GFI in trailer Henry 9-10-08  
I have exactly the same problem, with both the RM4223 and the 12V converter. I tested my converter, it is bad. It is a 20A and I am going to replace it with a 30A model, probably ELX-30. I left the 12VDC on at the same time the 120VAC was on with the fridge. I figure the 120V heating element is bad.
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