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Error code reference

LG Refrigerator Error Code F-FAN

Freezer fan motor (BLDC) abnormal

LG codesLG refrigerator codes

Freezer fan motor (BLDC) abnormal - motor defect, lead wire hook form fault, contact structure fault, short or open cable conductor (no motor signal for more than 115 seconds).

First step from the service manual

Turn off product, remove fan grille, manually check fan motor rotation condition.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What F-FAN means on a LG refrigerator

The F-FAN error code on an LG refrigerator indicates an abnormal condition in the freezer fan motor, which is a brushless DC (BLDC) type motor. The refrigerator's control board monitors the motor's feedback signal continuously, and when no valid motor signal is detected for more than 115 seconds, the F-FAN fault is triggered. This fan is responsible for circulating cold air from the evaporator coils throughout the freezer and refrigerator compartments, so a failure here directly impacts cooling performance across both sections.

The fault can originate from several points in the motor circuit. A defective motor itself, whether from bearing wear, winding failure, or internal BLDC driver damage, will produce no usable feedback signal. Physical issues with the lead wire connections are also common causes: the hook-form connector attachment at the motor housing can become unseated, and the contact structure between the wiring harness and motor terminals can corrode or lose continuity. A short or open conductor anywhere along the cable run will similarly prevent the control board from receiving the motor signal.

The first recommended diagnostic step is to power off the unit, remove the fan grille in the freezer compartment, and manually spin the fan blade. Resistance or complete inability to rotate suggests a seized motor bearing or mechanical obstruction such as ice buildup. Free rotation with no visible damage shifts focus toward the wiring, connectors, and contact points between the motor and the control board.

Source: manufacturer service documentation.

Common causes of F-FAN

  1. 01

    Ice buildup blocking the fan blade

    Wiring / connection

    Ice accumulation around the evaporator fan can jam the blade and prevent rotation, cutting off the motor signal. Manually spinning the blade after a defrost cycle or with a hair dryer pointed at the area will reveal this cause.

  2. 02

    Defective BLDC fan motor

    Part replacement

    Internal motor failure, including worn bearings, damaged windings, or a failed BLDC driver circuit, will cause the motor to produce no feedback signal. A motor that feels stiff, makes grinding noise, or does not spin freely when checked manually is likely defective and needs replacement.

  3. 03

    Loose or damaged lead wire hook-form connector

    Wiring / connection

    The hook-form connector that secures the motor lead wire to the housing can become unlatched due to vibration or improper reassembly after a previous repair. Inspect the connector at the motor for proper seating and secure engagement.

  4. 04

    Faulty contact structure at motor terminals

    Wiring / connection

    Corrosion or physical damage at the contact points between the wiring harness and the motor terminals can cause intermittent or complete signal loss. Clean the terminals and check for bent or pushed-back pins in the connector housing.

  5. 05

    Short or open circuit in the motor cable

    Part replacement

    A damaged cable run between the fan motor and the control board, caused by chafing, pinching, or moisture intrusion, can produce a short or open conductor that eliminates the motor signal entirely. Inspect the full cable length and test for continuity.

See the test procedure for each cause

Frequently asked questions about F-FAN

What does F-FAN mean on a LG refrigerator?
F-FAN indicates that the freezer fan motor, a brushless DC type, has not produced a valid signal for more than 115 seconds. The control board detects this absence of feedback and triggers the fault code. The cause can be a failed motor, a wiring connection problem, or a shorted or open cable conductor. This fan is critical for circulating cold air, so the error often coincides with warming temperatures inside the unit.
Can I fix the F-FAN error myself?
Some causes are DIY-friendly, particularly ice blockages and loose connectors. Start by turning off the refrigerator, removing the freezer fan grille, and manually checking whether the blade spins freely. If ice is blocking the fan, a manual defrost may resolve the issue. If the motor feels seized or the wiring is damaged, motor replacement or cable repair is required and may be better handled by a qualified technician.
Will resetting the refrigerator clear the F-FAN code?
A power reset may temporarily clear the display, but the code will return if the underlying fault is not resolved. Because the error triggers after 115 seconds of no motor signal, the control board will detect the same condition again once the unit restarts. A reset alone is not a fix and should only be used as part of the diagnostic process to observe whether the fault reappears.
Is it safe to use my refrigerator while the F-FAN code is active?
Running the refrigerator with an active F-FAN error is not recommended for food safety. Without the freezer fan circulating air from the evaporator, both the freezer and fresh food compartments will lose their ability to maintain safe temperatures. Food spoilage can occur relatively quickly, especially in warmer ambient conditions. It is best to address the fault promptly or transfer perishables to another unit in the meantime.
How much does it cost to repair an F-FAN error on an LG refrigerator?
Repair costs vary depending on the root cause. If only a connector needs reseating or ice needs to be cleared, costs may be limited to a service call fee, typically in the range of $75 to $150. If the BLDC fan motor itself needs replacement, parts plus labor can bring the total to roughly $150 to $350 depending on the model and local labor rates. Wiring harness repairs fall somewhere in between depending on the extent of the damage.

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