Coleman Niagara - refrigerator / gfi problems

[wkatez]

Hello campers,
 
 I'm having a problem with the Dometic 3-way refrigerator  on my 2001 Coleman Niagara.
 
 Every time I turn refrigerator on with the  110vac power selection it immedialtely blows the on board gfi.
 
 The unit  does seem to work on the 12vdc circuit but cools v-e-r-y s-l-o-w. The propane  burner will also light but it is even slower than the 12vdc.
 
 I'd love to  get the 110vac circuit working before next week's trip. My local Coleman dealer  can't give me a service appointment until mid-September, so I'm trying to figure  this out on my own.
 
 Here's what I have done in the way of  diagnostics:
 
 I tried unplugging the refrigerator from within the camper  body and plugged it into a short expension cord from my garage. It blew the  garage gfi instantly. (The garage gfi is known good because it was just replaced  last week after being fried by lightning and it is running all of my ham radio  and computer equipment.)
 
 So, I assume the problem is in the refrigerator  110vac circuit and not the onboard gfi or the actual refrigerator (because it  does cool on 12vdc.)
 
 Has anyone had this problem?
 
 Does anyone  have a suggestion of a possible solution?
 
 Is it safe to run the  refrigerator on the 12vdc (through the shore-power converter) for the entire  week?
 
 Thank you in advance for your assistance.

[AustinBoston]

The unit  does seem to work on the 12vdc circuit but cools v-e-r-y s-l-o-w. The propane  burner will also light but it is even slower than the 12vdc.

The propane setting should be able to freeze the eggs on an 85 degree day, so the burner may need cleaning/adjusting.  Your experience with 12 volts is typical.

Is it safe to run the  refrigerator on the 12vdc (through the shore-power converter) for the entire  week?

I'm not sure if it would be good for the converter, but if you got it working properly, the propane setting should be much more effective.

Sorry i can't tell you what to look for on the 120V electrical side.

Austin