Re: American Whirlpool fridge Fridge freezer ‘CF’ Error.
The whirlpool fault code description says:
Code “CF” blinking on the freezer display, RED alarm LED blinking and buzzer ON.
Communication failure between Main Board and User Interface.
Verify the connections.
Replace the User Interface and if the problem persist to replace the Main Board.
It is also worth checking the connector at the top of the freezer door under the hinge cover, not unusual to have a bad connection on these causing this problem. If not its maybe a dodgy board, I have had a few in the past.
Chay