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Error code reference

LG Refrigerator Error Code 23E

C-FAN (Condenser Fan) Error

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C-FAN (Condenser Fan) Error — feedback signal line contact error, motor wire separation, or motor error during fan operation.

First step from the service manual

Measure voltage between Main PCB CN76-5 (Sky-blue) and CN76-1 (Gray); should read between 7V and 12V.

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

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What 23E means on a LG refrigerator

The 23E error code on an LG refrigerator indicates a condenser fan (C-FAN) motor fault. The condenser fan is responsible for drawing air across the condenser coils at the rear or bottom of the unit, dissipating heat from the refrigerant as it moves through the system. When the main PCB detects an abnormal signal from this fan circuit, it logs error 23E and may reduce or disable cooling to prevent compressor damage from overheating. The three primary fault conditions are: a contact error in the feedback signal line, physical separation of the motor wiring harness, or an internal motor failure during operation.

The primary diagnostic entry point is a voltage check at the main PCB connector CN76. Measuring between pin CN76-5 (Sky-blue wire) and CN76-1 (Gray wire) should yield between 7V and 12V during normal operation. A reading outside this range points to either a wiring issue between the board and the motor or a failure within the motor itself. If voltage is present and within spec but the fan still does not spin or the error persists, the motor is likely defective. If voltage is absent or low, the fault may lie in the wiring harness connections or the PCB output circuit.

Condenser fan failures are often accelerated by dust and debris accumulation around the motor, which causes thermal stress and bearing wear over time. A motor with worn bearings may draw excessive current, generate abnormal feedback signals, and ultimately seize. Wiring harness issues, including loose connector pins at CN76 or chafed wire insulation from vibration, can intermittently break the feedback signal and trigger the error even when the motor itself is functional.

Source: manufacturer service documentation.

Common causes of 23E

  1. 01

    Loose or disconnected wiring harness

    Wiring / connection

    The connector at main PCB CN76 or the motor-side plug can work loose due to vibration, interrupting the feedback signal. Inspect both ends of the harness for loose pins, corrosion, or visible separation.

  2. 02

    Failed condenser fan motor

    Part replacement

    Internal motor failure, including seized bearings or open windings, will prevent the fan from spinning and cause an abnormal or absent feedback signal. If voltage at CN76-5 to CN76-1 reads within 7V to 12V but the motor does not run, the motor itself needs replacement.

  3. 03

    Damaged or chafed motor wiring

    Wiring / connection

    Wires running to the condenser fan can develop cracks or breaks in the insulation from repeated vibration or contact with sharp edges. Continuity testing along the harness can confirm whether a wire break is causing the feedback line contact error.

  4. 04

    Debris obstructing the fan blade

    Wiring / connection

    Dust buildup, small objects, or ice accumulation near the condenser fan can physically block the blade, causing the motor to stall and the PCB to register a motor error. Inspect the fan area and clear any obstructions before replacing components.

  5. 05

    Faulty main PCB

    Part replacement

    If voltage at CN76-5 to CN76-1 is absent or significantly outside the 7V to 12V range and the wiring and motor check out correctly, the main PCB output circuit may be defective. Board replacement is typically a last-resort diagnosis after all other causes are ruled out.

See the test procedure for each cause

Frequently asked questions about 23E

What does 23E mean on a LG refrigerator?
The 23E code indicates a condenser fan error. It is triggered when the main PCB detects a problem with the feedback signal from the condenser fan motor, which can be caused by a wiring contact fault, a disconnected motor wire, or a motor that has failed during operation. The condenser fan is critical for removing heat from the system, so this error can lead to cooling problems if not addressed promptly.
Can I fix the 23E error myself on a LG refrigerator?
Some causes of the 23E error are DIY-friendly. You can safely inspect the condenser fan area for debris or obstructions and check that the wiring harness connectors are fully seated. However, diagnosing the fault precisely requires a multimeter to measure voltage at PCB connector CN76, which is better suited to technicians or experienced DIYers comfortable working near electrical components. Motor replacement also requires disassembly of the rear panel or base compartment depending on your model.
Is it safe to keep using my refrigerator while it shows a 23E error?
Continued use is not recommended. Without a functioning condenser fan, heat cannot be properly removed from the refrigerant circuit, which can cause the compressor to overheat and sustain damage. Food safety is also at risk if the refrigerator loses its ability to maintain proper temperatures. It is best to address the error as quickly as possible.
Will resetting my LG refrigerator clear the 23E error?
A reset may temporarily clear the error code from the display, but it will not fix the underlying hardware fault. If the condenser fan motor, its wiring, or the feedback signal line has a physical problem, the 23E code will return once the refrigerator resumes normal operation and the PCB detects the fault again. A reset is only useful as a first step to confirm whether the fault is intermittent.
How much does it cost to repair a LG refrigerator showing a 23E error?
Repair costs depend on the root cause. If the fix is simply reseating a loose connector or clearing debris from the fan, you may have no parts cost at all, though a service call typically runs between $75 and $150. A replacement condenser fan motor generally costs between $30 and $90 for the part, with labor adding to the total. If the main PCB needs replacement, total repair costs can range from $200 to $400 or more depending on the specific model.

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