Samsung Refrigerator Error Code Ice Duct Heater

This error means the Main PCB has detected an open circuit, short, or connection failure in the ice duct heater circuit. The ice duct heater keeps the dispenser chute from freezing over. The board identifies the fault by monitoring the heater circuit connected to the CN70 connector, specifically the Brown and Gray wires, which should measure 63 ohms at 230V within a 7% tolerance.

The refrigerator's cooling and food storage functions may continue to operate normally since this error is specific to the ice duct heater circuit. However, ice may clump, block the dispenser chute, or fail to dispense correctly. Leaving the fault unaddressed for an extended period can worsen ice blockages and potentially strain related components.

A reset may temporarily clear the error code from the display, but the fault will return if the underlying problem with the heater circuit has not been corrected. The Main PCB continuously monitors the CN70 heater circuit, so the error will reappear as long as the resistance reading remains outside the acceptable range. A proper repair or component replacement is required to permanently clear the code.

A knowledgeable DIYer can perform the initial diagnostic step by unplugging the refrigerator, disconnecting the CN70 connector from the Main PCB, and measuring resistance between the Brown and Gray wires with a multimeter. If the reading is far outside the 63 ohm target or shows no continuity, the heater or harness needs replacement. Replacing the heater element or harness is a moderate repair, but working near the PCB and electrical components carries risk if you are not comfortable with appliance electronics.

Repair costs vary depending on the failed component. A replacement ice duct heater element or wiring harness typically ranges from $20 to $80 in parts. If a professional technician is needed, total repair costs including labor can range from $100 to $250 or more depending on your location and the extent of the repair.