Then I opened up the lower portion and low and behold, there were fins there they were along with the “thermistor” that the linked blog (Wandrin) was talking about. I have an arrow pointing to it:
I took a picture of the front of it closed with the doors shut:
And an enlarged view showing the name of the unit:
Mine has the same adjustment, so now thanks to the two blogs mentioned above; I will know how to adjust the temperature in my unit if needed. Thanks guys, any and all information is useful to some of us now and to most of us sooner or later. Now, you all have a great day, you hear.