[rames14]

Foldbak, it is if you have an RV fridge. Disregard if you have a residential fridge. The RV fridges use an ammonia based refrigerant. More air flow makes them more efficient and the ARP is designed to shut the fridge off if it gets to the boiling point. Most RV fires are traced back to the RV fridge. They are especially prone to overheating when not level (think grades in the mountains). The ARP monitors the boiler temp and shuts it down if it gets too hot then restarts it. Many of us old timers have them and most newbies don’t know about it.