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Error code reference

LG Refrigerator Error Code R-14

R-FAN Error

LG codesLG refrigerator codes

R-FAN Error - occurs when related fan motor operates but feed back signal wire contact is defective, motor wire is slipped out, or motor is defective.

First step from the service manual

Check voltage between MAIN PCB CN76 #4 (Orange) and #1 (Gray); should be within 7V~12V.

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

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What R-14 means on a LG refrigerator

The R-14 error code on an LG refrigerator indicates an R-FAN (refrigerator compartment evaporator fan) error. This fault is specifically triggered not by a complete fan failure, but by a feedback signal problem while the fan motor is still operating. The refrigerator's main PCB monitors a signal wire from the fan motor to confirm rotation speed and operation. When that feedback signal is interrupted or absent, the control board logs R-14 even if the motor itself is mechanically spinning.

The three primary causes are a defective feedback signal wire contact, a motor wire that has slipped out of its connector, and an internally defective motor. The first diagnostic step is to check the voltage at the main PCB connector CN76 between pin 4 (Orange wire) and pin 1 (Gray wire). A healthy system will read between 7V and 12V at this connector. A reading outside this range points to a wiring or connection fault between the PCB and the fan motor assembly.

If the voltage at CN76 is within specification, attention shifts to the fan motor itself. A motor that produces correct supply voltage at the connector but fails to generate a proper feedback signal is likely internally defective and requires replacement. Technicians should also carefully inspect the full length of the orange and gray wires for pinching, corrosion at terminals, or connectors that have partially unseated, as these conditions can produce an intermittent R-14 fault even when voltage readings appear borderline acceptable.

Source: manufacturer service documentation.

Common causes of R-14

  1. 01

    Loose or disconnected motor wire connector

    Wiring / connection

    The fan motor wiring connector at the main PCB (CN76) or at the motor itself may have slipped out or become partially unseated. Inspect both ends of the orange and gray wires for secure, fully seated connections.

  2. 02

    Defective feedback signal wire contact

    Wiring / connection

    Corrosion, a bent terminal pin, or damage along the feedback signal wire can break the circuit between the fan motor and the PCB. A visual inspection and continuity check of the signal wire will identify this fault.

  3. 03

    Defective R-FAN motor

    Part replacement

    If supply voltage at CN76 pins 4 and 1 reads within the 7V to 12V range but the error persists, the fan motor is internally defective and is not generating a proper feedback signal. Motor replacement is required.

  4. 04

    Voltage out of range at CN76

    Part replacement

    A reading below 7V or above 12V between CN76 pin 4 (Orange) and pin 1 (Gray) indicates the main PCB is not supplying correct power to the fan circuit, which may point to a faulty PCB or wiring harness issue.

See the test procedure for each cause

Frequently asked questions about R-14

What does R-14 mean on a LG refrigerator?
R-14 is an R-FAN error code indicating a problem with the refrigerator compartment evaporator fan's feedback signal. It occurs when the fan motor is operating but the main PCB cannot read the signal confirming proper motor function. The cause is typically a loose wire connector, a damaged signal wire, or a defective fan motor. The first diagnostic step is checking the voltage at main PCB connector CN76, which should read between 7V and 12V.
Can I fix the R-14 error myself on my LG refrigerator?
A knowledgeable DIYer can check and reseat the wiring connectors at the fan motor and at PCB connector CN76, which resolves the error if a slipped connector is the cause. Testing voltage at CN76 requires a multimeter and basic electrical knowledge. If the motor itself is confirmed defective, replacing the R-FAN motor is a moderately involved repair that requires accessing the evaporator compartment inside the refrigerator.
Is it safe to keep using my refrigerator when the R-14 error is displayed?
Continued use is not recommended without addressing the error. If the refrigerator compartment fan is not operating correctly, the fresh food section may not maintain safe temperatures, which can lead to food spoilage. Monitor compartment temperatures closely and address the fault as soon as possible.
How much does it cost to repair an LG refrigerator R-14 error?
If the fix is simply reseating a loose connector, there is no parts cost involved. If the R-FAN motor needs replacement, parts typically range from $30 to $80 depending on the specific model, with professional labor adding $100 to $200 or more. A PCB replacement, if the board is found to be at fault, is a more expensive repair, often ranging from $150 to $350 in parts alone.
Will resetting my LG refrigerator clear the R-14 error code?
A power reset may temporarily clear the R-14 code, but the error will return if the underlying fault has not been corrected. The code is generated by an active wiring or motor problem, so the only way to permanently clear it is to repair or replace the defective component, whether that is a connector, the signal wire, or the fan motor itself.

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