LG Refrigerator Error Code ICE PIPE HEATER Error

This error means the refrigerator has detected a fault in the ice pipe heater circuit inside the freezer compartment. The heater keeps the water supply line to the ice maker from freezing. The fault can be caused by a failed heater element, a wiring disconnection, a contact problem at the PCB connector, or a short circuit. Ice maker operation is typically affected when this error is active.

A power reset may temporarily clear the error code from the display, but if the underlying fault in the heater circuit still exists, the code will return. The root cause, whether it is a failed heater, damaged wiring, or a faulty connector, must be diagnosed and repaired for the error to stay cleared permanently.

Repair costs depend on what component has failed. If only the wiring or connector needs to be cleaned or reseated, costs may be limited to a service call fee, typically in the range of 75 to 150 dollars. If the ice pipe heater element itself needs replacement, parts and labor combined can range from 150 to 350 dollars or more depending on the technician and your location. Diagnosing the resistance at CN79 first helps determine the exact component at fault.

Start by disconnecting the CN79 connector on the main PCB and measuring resistance between the Blue and White wires. A reading of 72 ohms, plus or minus 7 percent, indicates the heater is good and the problem is in the connector, wiring, or PCB. A reading outside that range points to a failed heater element that will need to be replaced. Also inspect the connector pins and the wiring harness through the freezer for damage or corrosion.

This error is not an immediate safety hazard in most cases, but it should be addressed promptly. A failed ice pipe heater can cause the water supply line to freeze, blocking water flow to the ice maker and potentially causing damage to internal components over time. A short circuit condition, if present, should be repaired as soon as possible to avoid further electrical damage.