Hi,
Put one of these inside the fridge.

Here is a place with some diagrams to help with where to place exterior fans.
ARP fridge adviceMy exterior fans are at the very top of the chimney and are thermostatically controlled.
For my own peace of mind I have added the ARP protective device.
jstaffon wrote:
What do you mean "...add the fans inside" and "...add fans to the chimney"? Is that something that can be done without having to take the fridge out? Can I do this mod or do I have to have a service shop do this? I only have access to two vents on the outside of the camper. Thanks!