Its really not a fix. Its a device that shuts off power to the refer if it fails. It doesnt fix anything
Yes it does. It fixes Norcold's massive lawsuit liability problem. Or attempts to, anyway.
A vehicle recall "fix" is only intended to make the vehicle safe to use, not to make it perform as you expected when you paid your money. It doesn't have to keep your food cold as long as it doesn't cause you injury.
Sadly, the recall module isn't even perfect at its limited goal. There have been at least a couple fires on units that have the recall "fix" module installed.