I assume the vegs are freezing up at night. For the most part the camper inside temp does not matter unless you are opening the door a lot, which we don't do at night. All the cooling coils and the back of the fridge is cooled to the outside temp
We had veges sometimes eggs freeze with almost all our campers during cold nights of 40 and below, while running on 120v. The 120V the fridge does have a thermostat that turns off the cooling when it come to temp but the sensor is midway up inside the fridge. Since cold seattle's the bottom of the fridge gets colder than the middle of the fridge. The center can get warm enough to turn on the sensor.
It could be a bad 120V temp sensor/thermostat, but I would think its the most common problem people have with the small RV fridges. The fridge becomes much colder at the bottom when sitting without the door opened for long periods. We were alway fighting the vegas and sometime the eggs freezing for many years. Six-plus years ago someone mention a small battery operated camco recirculation fan that sits on the bottom of the fridge and circulates the air. Since using six years ago we only had the issue a few times and that was when the outside temp was below 20 and that has only been while on propane.
The fan is a little larger than a can of pop
Camco fridge fan
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