So how'd you guys power the absorption fridge in the dor
That's a funny story....how'd you power it? Did you just have a 20lb(5gal) propane tank in the door room with you?
The little cube ones like my camp trailer uses, will run for 30 days on a 5gal tank of propane, so that's about $18/mo to keep food cold.
RV fridges take a beating from being banged around during driving/towing, and then they sit, unused, surface rusting on the tubes and fins for umpteen months or years at a time. Usually, what kills them is being operated out of level. Not everyone knows that you can't do that, or understands that it permanently damages them. When they are out of level, the ammonia liquid can't circulate properly. It winds up puddling up, inside the tubing, and then creating ammonia crystals. These crystals wind up traveling around inside the tubes and then packing to the tiny orifaces in the tubing. Once this happens, the refrigerator either: a) won't work at all. b) works only marginally, producing worse cold the hotter it is outside c) working okay or marginally, and then suddenly stopping to make any cold until it's shut off, and/or towed/driven around/taken out and turned upside down for a while.....something that jars the crystals loose so they temporarily aren't blocking whatever passage they were blocking.
But the burner tubes are also a favorite nesting place for spiders who apparenly like the smell of propane. They'll pack a nest egg sack inside the burner tube, completely blocking the flow of propane. The burner tubes also rust out from heating and cooling cycles, and the thin burner slits just fall out.
All kinds of little failure points.
Absorption fridges can be rebuilt, for about $500ish for the big ones. It's just not cost effective to rebuild the smaller cube versions because you can buy a new one for less than having one rebuilt.
The people that gave me the Servel had just purchased a modern version, smaller and shorter, like what would be in a big travel trailer, and they paid $1,200 for it. Ouch. A place in the SF Bay Area rebuilds or sells the rebuilds at $650+ depending on model and size.