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Error code reference

LG Refrigerator Error Code R5

Failure of Fan Motor at freezer compartment

LG codesLG refrigerator codes

Failure of Fan Motor at freezer compartment — no motor signal (motor could be locked). Compressor operates normally, Freezer Motor OFF, Defrost Heater operates normally.

First step from the service manual

Check freezer fan motor signal and wiring; check if motor is locked.

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

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  • Wiring diagram references and connector pinouts from the OEM service manual
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What R5 means on a LG refrigerator

The R5 error code on an LG refrigerator indicates a failure of the freezer compartment evaporator fan motor. Specifically, the control board is detecting no signal from the fan motor, which means either the motor has stopped spinning entirely or its feedback signal is not reaching the board. According to the fault behavior, the compressor continues to operate normally and the defrost heater functions as expected, isolating the fault specifically to the freezer fan motor and its associated circuit. Without this fan running, cold air cannot be circulated from the evaporator coil into the freezer and fresh food compartments, causing temperatures to rise even while the compressor runs.

The most critical diagnostic distinction with R5 is whether the motor is electrically failed, mechanically locked, or experiencing a wiring/connection fault. A locked motor occurs when the fan blade is physically obstructed, often by ice buildup around the evaporator coil or a foreign object, preventing rotation entirely. The motor may still receive power in this condition but cannot spin, generating no tachometer or Hall-effect feedback signal to the control board. Alternatively, the motor windings can fail open or short, or the wiring harness connecting the motor to the board can suffer damage from ice, vibration, or rodent activity.

Diagnosis should begin with inspecting the freezer fan motor signal wire and full wiring harness for continuity, damage, or loose connections. The fan blade should be checked for obstructions and the motor shaft tested for free rotation. If the motor is locked due to ice accumulation, a manual defrost cycle may resolve the issue temporarily, but recurring ice buildup points to an underlying defrost system problem. If the motor itself has failed electrically, replacement of the fan motor assembly will be required.

Source: manufacturer service documentation.

Common causes of R5

  1. 01

    Ice buildup locking the fan blade

    Wiring / connection

    Excessive frost accumulation around the evaporator coil can physically jam the fan blade, preventing rotation and cutting off the motor signal. Inspect the evaporator compartment for heavy frost and check whether the blade spins freely by hand.

  2. 02

    Failed freezer evaporator fan motor

    Part replacement

    The motor windings can fail open or short internally, causing the motor to stop running entirely. If the blade spins freely but the motor does not run when powered, the motor assembly needs replacement.

  3. 03

    Damaged or disconnected wiring harness

    Wiring / connection

    The wiring between the fan motor and the main control board can become damaged by ice, vibration, or physical wear, interrupting the signal circuit. Check all connectors and wiring for continuity, corrosion, or visible damage.

  4. 04

    Fan blade obstruction other than ice

    Wiring / connection

    A foreign object or a dislodged component in the freezer compartment can contact and block the fan blade. Remove freezer contents and inspect the fan area for any physical obstruction.

  5. 05

    Faulty main control board

    Part replacement

    If the motor, wiring, and fan blade all check out correctly, the control board may not be properly sending power to or reading the signal from the fan motor. This is the least common cause and should only be considered after all other components are confirmed good.

See the test procedure for each cause

Frequently asked questions about R5

What does R5 mean on a LG refrigerator?
The R5 code indicates that the freezer compartment evaporator fan motor has failed or is not sending a signal back to the control board. The refrigerator's compressor and defrost heater continue to operate normally, but without the fan running, cold air cannot circulate through the freezer or fresh food sections. The motor may be mechanically locked, electrically failed, or there may be a wiring issue in the fan circuit.
Can I fix the R5 error on my LG refrigerator myself?
Some causes of the R5 error are DIY-friendly, such as clearing ice that is blocking the fan blade or reseating a loose wiring connector. You can perform a manual defrost by unplugging the refrigerator for 24 to 48 hours to melt any ice obstruction and then check if the error clears. However, if the fan motor itself has failed electrically or the control board is at fault, replacing those components requires moderate technical skill and the correct replacement part for your model.
Is it safe to keep using my LG refrigerator while the R5 code is active?
It is not recommended to continue using the refrigerator normally with an active R5 error. Because the freezer fan is not circulating air, food temperatures in both the freezer and fresh food compartments will rise, creating a food safety risk. The compressor running without airflow can also cause it to work harder than intended. The issue should be diagnosed and resolved as soon as possible.
How much does it cost to repair the R5 error on an LG refrigerator?
Repair costs vary depending on the root cause. A replacement evaporator fan motor for an LG refrigerator typically costs between $30 and $100 for the part alone, and professional labor can add $100 to $200 or more depending on your location and the technician. If the main control board is at fault, parts alone can range from $100 to $300 or higher. If ice obstruction is the only cause, the repair may cost nothing beyond your time.
Will resetting my LG refrigerator clear the R5 error code?
Unplugging the refrigerator and restoring power may temporarily clear the R5 code from the display, but the error will return if the underlying cause has not been corrected. A reset should not be used as a substitute for diagnosis. If the fan motor is locked due to ice and the ice is fully melted before restarting, the reset may result in a lasting fix, but an electrically failed motor or wiring fault will trigger R5 again once the unit restarts.

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