Here is why I have thermometer inside my refrigerator.
Absorption refrigerators are nice to have in an RV for travel. They will work on 110 volts electric and propane. This allows us to go just about anyplace. The down side is they are not very efficient and sometimes they just quit.
We have had this refrigerator since November of 2005 and in the last five years it has now quit working three times. The first time we were at Lees Ferry in northern Arizona on a 100 degree plus day. After trying all kinds the things I figured out that if I turned all the power off to the refrigerator, let is rest for at least a minute, it will reset itself and work again.
It has actual quit one additional time when the cooling system leaked all it’s ammonia. I purchased the cooling unit and replaced it myself at just under the price of a new refrigerator. Oh, ya I forgot the replacement cooling unit leaked after a year and I had to replace that one.