BTW, when pulled out of the unit, the heating element works when connected on AC. Waiting for my new board to arrive. I highly suspect this was the replacement board as it was from amazon warehouse deals (ie. return from customers and not a refurbished item). I will let you know. I think I have done all the testings needed to be done on both boards.
If the error persists, I will just hack the fridge and control the heating element with a AC freezer temperature controler (about $50) and be done with it.
Cheers to all.
