low ambient control
Dm3862, nDm1062 & nDr1292
The refrigerator is equipped with an exclusive feature that allows for trouble-free operation in low ambient temperature (like below 50°F) for extended periods of time. once the out- door temperature is above 50°F, the low ambient switch should be turned off.
I think all this does is leave the light on when the dorz shut.
climate control system
Dm2652, Dm2662, Dm2663, Dm2852, Dm2862, Dm3862, nDm1062 & nDr1292 During the summer months of high temperatures and humidity, the metal frame between the freezer and fresh food compart- ments may have water droplets forming. The number of water droplets will increase if the vehicle is not air conditioned dur- ing these months. The refrigerator comes standard with a 12 V DC climate control that will evaporate the water droplets when they form. The climate control can be left on continuously or used only when temperatures require it. Note that when turned on, the climate control will draw 12 V DC power continuously. Turn it off when a charging source is not available.