Wow, not sure how I missed this before. So I found the breakdown schematics of my model (thanks, nice to have that on the website!) and looked at where things were and discovered the evaporator accessible from the inside. So I looked inside and noticed that there was a 1/4-1/2 inch layer of frost over the evaporator cover (attached pic). I am still not quite sure where my defrost timer is to see if it is faulty or not, but I found it in the breakdown. I removed the last few items out of the freezer (bread mostly just keeping cold instead of frozen) and turned the unit off. I will have to watch it now for a bit to let it thaw some. It is possible that the heater is not functioning properly or that the defrost is not kicking on given that I suspect that the evaporator coils are all frozen up with ice. Going to let it defrost (putting some towels down for extra water collection) and take a look at it tomorrow after work. The kids won't be excited about their freezy-pops being melted, but hey, they are encased in plastic so they should be safe :) Hopefully get them re-frozen soon.

So after some careful searching, I found the defrost timer. It is located in the back, bottom left (facing the back). See picture IMAG0909. There are two hex screws (1/4") that come out easily. The timer dial pokes through the hole in the back of the frame. I removed it for easy access and disconnected/reconnected it. My freezer had been running overnight and my test bottle of water was seriously frozen (much better than before). I checked and some frost had formed on the evaporator coils, so I slowly turned the round knob clockwise (which is the only way it will turn) until it clicked. Looking inside the fridge, I heard hissing and saw steam - very good evidence that my heater was working properly. I looked up the part here (see picture IMAG0912) and ordered it, expecting arrival sometime next week.