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Error code reference

LG Refrigerator Error Code rF

Failure of Fan Motor at Refrigerator Compartment

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Failure of Fan Motor at Refrigerator Compartment - no fan motor feedback signal for more than 65 seconds during fan motor operation.

First step from the service manual

Reset the unit and enter Test 1 Mode, then open refrigerator door and check air flow.

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

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What rF means on a LG refrigerator

The rF error code on an LG refrigerator indicates a failure of the refrigerator compartment fan motor. Specifically, the control board has detected an absence of the fan motor feedback signal for more than 65 seconds while the fan motor is commanded to run. The feedback signal is a pulse sent back to the control board from the fan motor to confirm it is spinning. When this signal is absent or interrupted, the board interprets the motor as non-functional and triggers the rF fault.

The refrigerator compartment fan motor is responsible for circulating cold air from the evaporator coils throughout the fresh food section. Without proper airflow, temperatures in the refrigerator compartment rise, food spoilage can occur, and the overall refrigeration system efficiency drops significantly. The motor receives both a power supply and a feedback (tachometer) signal connection to the control board, and a fault in either of these circuits can trigger the error.

Common root causes include a failed fan motor, a wiring harness issue between the motor and the control board, excessive ice buildup around the fan blade preventing rotation, or a defective main control board that is misreading or not receiving the feedback signal. The recommended first diagnostic step is to reset the unit, enter Test 1 Mode, open the refrigerator door, and verify whether airflow is present from the fan vents. This helps distinguish between a motor that is completely failed and one that may be obstructed or intermittently faulting.

Source: manufacturer service documentation.

Common causes of rF

  1. 01

    Failed refrigerator compartment fan motor

    Part replacement

    The fan motor itself may have burned out or seized, preventing it from spinning and sending a feedback signal. You can confirm this by entering Test 1 Mode and checking for airflow with the refrigerator door open.

  2. 02

    Ice buildup blocking the fan blade

    Wiring / connection

    Ice can accumulate around the fan blade or housing, physically obstructing rotation and causing the motor to stall. Inspect the fan area for frost or ice accumulation after a manual defrost cycle.

  3. 03

    Wiring harness or connector fault

    Wiring / connection

    A damaged, corroded, or loose connector between the fan motor and the control board can interrupt the feedback signal even if the motor itself is functional. Inspect the wiring harness along its full run for pinched wires, corrosion, or unseated connectors.

  4. 04

    Defective main control board

    Part replacement

    If the control board is faulty, it may fail to read the feedback signal from an otherwise working fan motor. This is typically diagnosed after confirming the motor and wiring are intact.

  5. 05

    Obstruction near the fan blade

    Wiring / connection

    Items stored in the refrigerator compartment can shift and physically block the fan blade from spinning. Check the fan housing area for any foreign material or misplaced items before proceeding to component-level diagnosis.

See the test procedure for each cause

Frequently asked questions about rF

What does rF mean on a LG refrigerator?
The rF code on an LG refrigerator indicates a failure of the refrigerator compartment fan motor. Specifically, the control board has not received a feedback signal from the fan motor for more than 65 seconds during normal operation. This means the board cannot confirm the fan is spinning, which could result in rising temperatures inside the fresh food section. The issue may be caused by a failed motor, a wiring fault, ice obstruction, or a defective control board.
Can I fix the rF error code on my LG refrigerator myself?
Some causes of the rF code, such as a blocked fan blade or ice buildup, can be addressed without replacing parts. Start by resetting the unit and entering Test 1 Mode to check for airflow with the door open. If ice is the culprit, manually defrosting the refrigerator may resolve the issue. However, if the fan motor or control board needs replacement, those repairs are more involved and may require a qualified technician.
Will resetting my LG refrigerator clear the rF error code?
A reset may temporarily clear the rF code, but if the underlying problem is not resolved, the error will return once the control board detects the missing feedback signal again after 65 seconds of fan operation. Resetting is a useful first diagnostic step to confirm whether the fault is persistent, but it is not a fix on its own. Always follow the reset with a functional check of the fan in Test 1 Mode.
Is it safe to keep using my LG refrigerator when the rF code is displayed?
Continuing to run the refrigerator with an active rF error is not recommended, as the fan motor failure means cold air may not be circulating properly through the fresh food compartment. This can lead to temperatures rising above safe food storage levels and potential food spoilage. You should address the fault promptly or transfer perishable items to another cooler until the repair is completed.
How much does it cost to repair an rF error code on an LG refrigerator?
Repair costs vary depending on the root cause. A replacement refrigerator compartment fan motor typically ranges from $30 to $80 for the part, with labor adding $75 to $150 or more depending on your area. If the main control board is the faulty component, parts alone can range from $100 to $250 or higher. Getting a diagnostic call from a qualified technician is the best way to pinpoint the exact cause before committing to parts.

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