I have the CR110 model and agree that it does run a lot, but I just assumed that's the nature of the 12v DC compressors.
This may be a stupid question but I have to ask. At the top center of the door there's a device that looks kind of like an edge on disk. In one position the fridge door closes tight in the other the closed door is held open just enough to vent and avoid the odors that accumulate in a standing fridge. You don't by chance have it in vent mode, do you?
See figure 9 on page 6 of this PDF
CR Series manual
