What's Happening

Main board and display board lost communication. Loose ribbon cable most common.

How to Fix It

Unplug for 5 minutes. Check ribbon cable. Replace board if secure.

Frequently Asked Questions
What does CF mean on a KitchenAid fridge?
CF means the boards can't communicate. Display may flash or go blank.
Can a loose cable cause CF?
Yes. Check the ribbon cable first.
Will the fridge still cool?
It may, but you can't adjust settings.