If it works on propane
but not electric, you've got the expensive part covered. The electric part is just a switch, a thermostat and an electric heater element that wraps around a tube, ususally just above where the propane flame heats.
Any of those parts should be relatively inexpensive and replaceable.
Concerning the propane vs electric issue -- any that I have had work much better on propane than on electric, as if they have been optimized for propane usage.
The only caveat is the trailer, including the fridge
, need to be level so the pipes in the back can "burp" and allow the refrigerant to flow. If flow stops, heat builds up where the flame heats the piping. In time a small piece of metal slag can form. Eventually, this will grow then slough off and circulate with the refrigerant. At a specific point in the piping there is a small orifice that the gas flow through, sized per the overall design of the unit. If the chunk of slag gets caught in the orifice, guess what?
Flow stops and the refrigerator
quits working. I have read the ideas about turning the fridge
upside down causing the burping process to be re-established etc. But I wonder if it also can help to dislodge an offending slag particle from the orifice and hopefully cause it to settle in some crook or cranny where normal flow won't dislodge it again.
Just a thought. Maybe there's a refrigeration guy on the forum that knows the straight skinny on this and can help me get my head screwed back on straight concerning this issue!