The fact that your fridge runs fine on 120V but not on
LP suggests a problem with the flame burner chamber,
specifically, rather than a general system failure.
Places to look are the jet orifice, burner, and the
intake & chimney flues.

I solved a similar problem a few years ago by hooking
up a shop vac to the chimney flue, followed by the
fresh-air intake tube, to remove collected crud and
rust flakes from the burner chamber. It's been working
well ever since. Your particular case may not be so
easily remedied, but it's worth a try.

There are a lot of good troubleshooting and R&R
articles at: http://www.vanagon.com/

Go to: Info > Articles & Essays > Refrigerator Info

Good luck!

Jeffrey Earl
1983 diesel Westfalia "Vanasazi"
http://www.vanthology.com/

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