Product review (4 stars): Symptom: Freezer too cold, fresh food compartment normal.
This is a generic control board for several brands of fridge, the only difference is, how you initial configure the board and the instruction is included. A search on the web points my problem to the control board and/or maybe the thermostat sensor. I unplugged my fridge and let it warm up so I can disassemble the freezer's rear panel and look at what's what. Found nothing out of the ordinary, vacuumed accumulated dust from radiator, and lo and behold fridge came back up normal again, so returning board. This is my first problem with my 6 years old KitchenAid Architect II.  At usd$70+ this is very reasonable compared to prices on the web.

There is an engineering write-up on the web about conducting tests with this board, it's a bit technical, but is free. My solution ended up being unplugging the old board, clean the contact, plug it back in, a trick I learn fixing TVs, seems to have permanently solved my problem!

UPDATE: well my fix lasted 18 months and the problem is back, makes me raise me eyebrows, like dude is this an original design problem? a simple cold solder joint thing? because I got soldering iron galore, but no, no one repairman on the web are peeping, the Sicilian silence of the Appliance Brotherhood, so I broke down an bought a new board to replace, hope this permanently fixes it.  Spent another $10 to buy from an Amazon ship. Amazon return policy is so user friendly, well worth the extra$.