Product review (3 stars): lasted for 8 months - now back to the same
Randomly my freezer would suddenly stop cooling, then the high temp light and alarm would come on. Every time it did this, I had to empty it out and defrost it (leaving a huge puddle). It started happening more and more frequently, to the point it was almost a monthly thing. All the forums pointed to this little control unit. Purchased it on Amazon, arrived quickly, installed easily and better yet, it fixed my problem. That is until yesterday. The control unit has been installed for  8 months, My guess is Frigidaire has an inherent problem with this model, causing something to go bad in the control unit, causing the freezer to never stop running, therefor freezing up the coils.
It gets a little frustrating pulling all your frozen goods out and putting them in coolers to defrost on a constant basis.
Im hopeful the part is under warranty and the seller I purchased from will replace it under warranty. If not, Im probably going to scrap this freezer and go with a different brand.