Sub-Zero 590 freezer not getting cold enough, bad defrost terminator!

I recently had a problem with my Sub-Zero 590 refrigerator where the freezer wouldn't get cold enough. It turned out to be a problem with the defrost cycle and specifically with a bad defrost terminator. This video shows the troubleshooting and the replacement of that part. Defrost Terminator part number is 7006594. You can find it here - https://certifiedapplianceparts.com/t...