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Error code reference

LG Refrigerator Error Code IF E

Abnormality of BLDC fan motor for ice making; caused when feedback signal is not received for over 65 seconds…

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Abnormality of BLDC fan motor for ice making; caused when feedback signal is not received for over 65 seconds during BLDC fan motor operation. Possible causes include poor BLDC motor connection, drive IC, or TR.

First step from the service manual

Reset the unit and input Test 1 Mode, check air flow, check fan motor for stickiness, then check fan motor voltage at CON3 pins 12-9.

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

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What IF E means on a LG refrigerator

The IF E error code on an LG refrigerator indicates an abnormality in the BLDC (Brushless DC) fan motor responsible for ice making. The control board triggers this fault when it fails to receive a feedback signal from the fan motor for more than 65 continuous seconds while the motor should be operating. BLDC motors rely on a feedback loop to communicate rotational speed and position back to the control board. When that signal is interrupted or absent, the board cannot confirm the motor is running correctly and registers the fault.

The ice maker fan motor circulates cold air through the ice making compartment to maintain proper freezing conditions. Without this airflow, ice production slows or stops entirely. The most likely hardware causes include a loose or corroded connection at the motor wiring harness, a failed drive IC (integrated circuit) on the control board that is responsible for sending the drive signal to the motor, or a faulty transistor (TR) in the motor drive circuit. Physical obstruction, such as ice buildup jamming the fan blades, can also prevent the motor from spinning and producing a feedback signal.

Diagnosis begins with resetting the unit and entering Test 1 Mode to observe fan operation directly. The technician should check for adequate airflow and manually check the fan blade for stickiness or resistance, which would indicate a mechanical obstruction or seized motor bearing. Voltage should then be measured at CON3 pins 12 through 9 to determine whether the control board is supplying correct drive voltage to the motor. If voltage is present but the motor does not respond, the motor itself is likely faulty. If voltage is absent, the fault points to the drive IC or transistor on the control board.

Source: manufacturer service documentation.

Common causes of IF E

  1. 01

    Ice buildup jamming the fan blade

    Wiring / connection

    Frost or ice accumulation around the ice maker fan can physically block the blades from spinning, cutting off the feedback signal to the board. Checking for stickiness or resistance when manually rotating the fan blade will confirm this cause.

  2. 02

    Loose or corroded wiring connection at the fan motor

    Wiring / connection

    A poor connection at the motor harness can interrupt both the drive signal and the feedback signal. Inspecting and reseating the connector, particularly checking CON3 pins 12 through 9, is an essential early diagnostic step.

  3. 03

    Failed BLDC fan motor

    Part replacement

    The motor itself may have a seized bearing or internal winding failure, preventing it from spinning even when correct drive voltage is supplied. If voltage is confirmed at CON3 but the motor does not run, the motor needs replacement.

  4. 04

    Faulty drive IC on the control board

    Part replacement

    The drive IC is the integrated circuit responsible for generating the signal that runs the BLDC motor. If it fails, the motor receives no drive signal and produces no feedback, triggering the IF E fault. Absence of voltage at CON3 pins 12 through 9 points to this component.

  5. 05

    Failed transistor (TR) in the motor drive circuit

    Part replacement

    A shorted or open transistor in the motor drive circuit can disrupt power delivery to the fan motor. This is closely related to drive IC failure and is evaluated as part of the same control board diagnostic process.

See the test procedure for each cause

Frequently asked questions about IF E

What does IF E mean on a LG refrigerator?
IF E indicates an abnormality in the BLDC fan motor used for ice making. Specifically, the control board did not receive a feedback signal from that motor for more than 65 seconds during operation. This fault stops ice production and requires diagnosis of the fan motor, its wiring connections, and the motor drive circuit on the control board.
Will resetting my LG refrigerator clear the IF E error?
A reset may temporarily clear the IF E error, and LG's diagnostic process actually recommends starting with a reset and entering Test 1 Mode as the first step. However, if the underlying cause, such as a jammed fan blade, a bad connection, or a failed motor or board component, is not corrected, the error will return within 65 seconds of the fan motor failing to produce a feedback signal again.
How do I fix the IF E error on my LG refrigerator?
Start by resetting the unit and entering Test 1 Mode to observe fan behavior. Check whether the ice maker fan blade spins freely or feels sticky, which could indicate ice obstruction or a seized motor. Next, inspect the wiring connections at the motor harness and measure voltage at CON3 pins 12 through 9. Depending on findings, the fix may be as simple as clearing an ice blockage, reseating a connector, or as involved as replacing the fan motor or the control board.
Is the IF E error on an LG refrigerator a safety concern?
The IF E error is not an immediate safety hazard, but it does indicate that the ice maker fan motor is not functioning correctly. Left unaddressed, the lack of airflow in the ice making compartment will halt ice production and could contribute to temperature inconsistencies in that section of the refrigerator. It is advisable to diagnose and resolve the error promptly to avoid further issues.
How much does it cost to repair the IF E error on an LG refrigerator?
Repair costs depend on the root cause. If the issue is simply a blocked or iced-over fan blade, there may be no parts cost at all. A replacement BLDC ice maker fan motor typically costs in the range of $30 to $80 for the part alone. If the control board's drive IC or transistor has failed and the board requires replacement, parts costs can range from $100 to $300 or more, with additional labor costs if a technician performs the repair.

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