Sounds like you have the Dometic or Norcold rv frig if it will run on propane not an apartment frig, if so set it on "auto" on the center control panel & then it automatically switches to propane when you unplug from shore power.
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Fulltimed 10+ years
Sold '13 Thor Redwood 36 FB
Traded '13 GMC Denali DRW D/A
Replacement undetermined
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