A:Answer A CF error code indicates that the feedback signal is less than 65 seconds during the fan's operation. This refers to the fan at the back, bottom of the refrigerator that discharges heat from the condenser. Please contact LG Customer Support by direct message via Twitter (@LGUSSupport) or Facebook Messenger (https://www.facebook.com/LGUSA/). Please be sure to provide your contact information, model/serial numbers and date of purchase and we will be happy to assist you. ^Daphane