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Error code reference

LG Refrigerator Error Code 39E

Ice Maker(FZ) Function Error

LG codesLG refrigerator codes

Ice Maker(FZ) Function Error — freezer ice maker error occurred more than 3 times.

First step from the service manual

Replace the Ice Maker and check if it operates normally.

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

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  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
  • Verified part numbers when replacement is required
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What 39E means on a LG refrigerator

The 39E error code on an LG refrigerator indicates a freezer ice maker function error that has been detected and logged more than three times. This threshold-based triggering means the control board is not registering a one-time or intermittent glitch but rather a persistent, repeating failure within the ice maker assembly located in the freezer compartment. Once the fault cycle count exceeds three occurrences, the board flags the 39E code and halts normal ice making operations to prevent further mechanical stress or water-related damage.

The freezer ice maker is a self-contained assembly that includes a motor, a thermostat, a heating element for harvest cycles, and various sensors that communicate cycle completion back to the main control board. When any of these internal components fail or fall out of acceptable operating parameters, the ice maker cannot complete its harvest cycle correctly. This type of repeated functional failure points strongly toward a fault within the ice maker unit itself rather than an upstream component like the water inlet valve or ice maker wiring harness, which is why the primary diagnostic step is to replace the ice maker assembly and confirm normal operation afterward.

Source: manufacturer service documentation.

Common causes of 39E

  1. 01

    Failed Ice Maker Assembly

    Part replacement

    The ice maker unit itself is the most likely culprit when the 39E error repeats more than three times. An internal component failure within the assembly, such as the harvest motor, thermostat, or heating element, prevents the ice maker from completing its cycle correctly.

  2. 02

    Ice Maker Wiring or Connector Issue

    Wiring / connection

    Loose, damaged, or corroded wiring connections between the ice maker and the control board can cause repeated communication failures that trigger the 39E code. Inspect the wiring harness and connectors at the ice maker for damage or poor contact before replacing the assembly.

  3. 03

    Ice Maker Sensor or Thermostat Fault

    Part replacement

    The ice maker relies on internal temperature sensing to time its harvest cycles. If the thermostat or sensor within the unit has drifted or failed, the control board will not receive the expected cycle completion signal, causing repeated errors.

  4. 04

    Freezer Temperature Too High

    Wiring / connection

    If the freezer compartment is not maintaining a cold enough temperature, the ice maker cannot freeze water properly and will repeatedly fail to complete cycles. Check that the freezer is holding at or near 0 degrees Fahrenheit and that the evaporator fan is running.

  5. 05

    Main Control Board Communication Fault

    Part replacement

    In less common cases, a fault on the main control board can cause it to misread or fail to receive ice maker cycle signals, generating repeated 39E errors even when the ice maker itself is functional. This is typically diagnosed after ice maker replacement does not resolve the code.

See the test procedure for each cause

Frequently asked questions about 39E

What does 39E mean on a LG refrigerator?
The 39E code means the freezer ice maker has experienced a function error more than three times. The refrigerator control board tracks ice maker cycle failures and triggers this code when the problem is persistent rather than a one-time occurrence. It indicates the ice maker is not completing its cycles correctly and needs to be diagnosed or replaced.
Can I fix the 39E error myself, or do I need a technician?
A knowledgeable DIYer can start by inspecting the wiring harness and connectors at the ice maker for visible damage or loose connections. If no wiring issue is found, the primary fix is replacing the ice maker assembly. Ice maker replacement on LG refrigerators is a moderate-difficulty repair, but if the error persists after replacing the ice maker, a technician should evaluate the main control board.
Is it safe to use my LG refrigerator while the 39E code is showing?
Yes, the 39E error is specific to the ice maker function and does not affect the overall cooling performance of the refrigerator or freezer. Your food will remain safely stored while this code is active. The only impact is that the ice maker will not produce ice normally until the issue is resolved.
How much does it cost to fix a 39E error on a LG refrigerator?
If the repair involves replacing the ice maker assembly, parts alone typically range from $60 to $200 depending on the specific LG model. Adding professional labor, the total repair cost generally falls between $150 and $400. If the issue turns out to be a wiring connection that only needs cleaning or reseating, the cost can be minimal.
Will resetting my LG refrigerator clear the 39E error code?
A reset may temporarily clear the 39E code from the display, but the code will return if the underlying ice maker fault is not corrected. Because the code is triggered after more than three failure cycles, simply resetting the unit without repairing or replacing the ice maker will result in the error appearing again once the ice maker attempts and fails another cycle.

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