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Error code reference

LG Refrigerator Error Code ICE MAKER FUNCTION ERROR

Ice maker kit malfunction

LG codesLG refrigerator codes

Ice maker kit malfunction — more than 3 occurrences of ice ejection or horizontal leveling errors.

First step from the service manual

Only applicable to models with ice maker; press Test S/W to attempt normal ice ejection and water supply to cancel the 3-time error mode.

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 ICE MAKER FUNCTION ERROR means on a LG refrigerator

The ICE MAKER FUNCTION ERROR on an LG refrigerator indicates a malfunction within the ice maker kit assembly. Specifically, this error is triggered when the refrigerator's control system logs more than three consecutive occurrences of either ice ejection failures or horizontal leveling errors. Ice ejection errors occur when the ejector motor fails to push formed ice cubes out of the tray properly, while horizontal leveling errors indicate the ice maker assembly is not maintaining the correct physical orientation to fill, freeze, or eject ice correctly.

This error is exclusive to LG refrigerator models equipped with an ice maker kit and is tracked cumulatively by the control board. Once the fault threshold of three occurrences is reached, the unit enters a locked error mode and suspends ice maker operation. The underlying causes typically involve mechanical failures in the ejector motor, ice tray assembly issues, wiring faults between the ice maker and main control board, or the ice maker assembly being physically out of level. Water supply irregularities can also contribute by producing incomplete ice formations that jam the ejector mechanism.

The first diagnostic step is to press the Test Switch (Test S/W) on the ice maker assembly. This initiates a forced test cycle that attempts a normal ice ejection sequence followed by a water fill cycle. If the test cycle completes successfully, the three-occurrence error counter is reset and the ice maker resumes normal operation. If the test cycle fails or the error returns shortly after, further component-level diagnosis of the ejector motor, wiring harness, and ice maker mounting is required.

Source: manufacturer service documentation.

Common causes of ICE MAKER FUNCTION ERROR

  1. 01

    Ice Ejector Motor Failure

    Part replacement

    The ejector motor drives the mechanism that pushes ice cubes out of the tray. If the motor is worn, seized, or receiving insufficient power, ejection failures accumulate and trigger the error. Listen for the motor running during a test cycle and check for physical obstructions in the ejector path.

  2. 02

    Ice Maker Assembly Out of Level

    Wiring / connection

    The horizontal leveling sensor detects when the ice maker is not properly aligned. If the ice maker bracket is loose, bent, or incorrectly installed, leveling errors are logged repeatedly. Check the mounting hardware and verify the assembly sits flush and level within the freezer compartment.

  3. 03

    Wiring Harness or Connector Fault

    Wiring / connection

    A damaged, corroded, or loose wiring harness connection between the ice maker assembly and the main control board can cause intermittent communication errors that register as ejection or leveling faults. Inspect all connectors at the ice maker and trace the harness for pinches or breaks.

  4. 04

    Restricted or Insufficient Water Supply

    Wiring / connection

    Low water pressure or a partially clogged water inlet valve can result in incomplete ice cube formation. Undersized or malformed cubes can jam the ejector tray, leading to repeated ejection failures. Verify household water pressure and inspect the inlet valve screen for mineral deposits.

  5. 05

    Ice Maker Kit Assembly Defect

    Part replacement

    Internal mechanical defects within the ice maker kit itself, such as a cracked tray, broken ejector arm, or failed sensor, can cause persistent faults that survive reset attempts. If the error returns immediately after a successful test cycle, the kit assembly likely requires replacement.

See the test procedure for each cause

Frequently asked questions about ICE MAKER FUNCTION ERROR

What does ICE MAKER FUNCTION ERROR mean on a LG refrigerator?
This error means the LG refrigerator's control system has recorded more than three failures involving the ice maker, specifically ice ejection errors or horizontal leveling errors. When this threshold is reached, the refrigerator enters an error mode and suspends ice maker operation. The error applies only to models equipped with an ice maker kit and requires a test cycle or component repair to resolve.
Will resetting my LG refrigerator clear the ICE MAKER FUNCTION ERROR?
A standard power reset alone may not permanently clear this error because it is triggered by a cumulative count of three or more faults. The correct reset procedure is to press the Test S/W button on the ice maker assembly, which forces a test ejection and water fill cycle. If that cycle completes successfully, the error counter resets. However, if the underlying cause is not fixed, the error will return once three more faults are logged.
How do I fix the ICE MAKER FUNCTION ERROR on my LG refrigerator?
Start by pressing the Test S/W button on the ice maker to initiate a test cycle and attempt to reset the error. If the test cycle completes, monitor the ice maker for recurring faults. If the error returns, inspect the ejector motor for signs of failure, check that the ice maker assembly is properly leveled and securely mounted, examine the wiring harness for damage, and verify adequate water supply pressure and a clean inlet valve screen.
Is it safe to keep using my LG refrigerator while the ICE MAKER FUNCTION ERROR is active?
Yes, the ICE MAKER FUNCTION ERROR affects only the ice maker function and does not impact the refrigerator or freezer cooling systems. Your food will remain properly refrigerated and frozen. You can continue using the appliance normally while you diagnose and repair the ice maker issue.
How much does it cost to repair the ICE MAKER FUNCTION ERROR on an LG refrigerator?
Repair costs depend on the root cause. If the fix is as simple as re-leveling the ice maker assembly or cleaning the water inlet screen, there may be little to no parts cost involved, with labor fees typically ranging from $75 to $150. If the ejector motor or the full ice maker kit assembly requires replacement, parts and labor combined typically range from $150 to $400 or more depending on the specific model and local labor rates.

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