Lg Refrigerator Error IS

⚡ Quick Answer: The LG refrigerator IS error indicates a fault with the ice maker's internal temperature sensor. This issue often results in irregular or halted ice p... ⚠️ Difficulty Varies

What Does Error IS Mean?

The LG refrigerator IS error indicates a fault with the ice maker's internal temperature sensor. This issue often results in irregular or halted ice production and may cause unusual noises from the ice compartment. While this error does not affect the main cooling functions of the refrigerator and freezer, addressing the temperature sensor issue is crucial for restoring normal ice-making operations.

Common Symptoms:

  • Code displayed prominently on the control panel when ice maker isn’t functioning normally
  • Ice production stops or is irregular
  • Ice maker may not dispense ice while code persists
  • No direct impact on main cooling (fridge/freezer) beyond ice making failure

Possible Causes

  • Ice maker temperature sensor fault or disconnection (high)

How to Fix Error IS

DIY Fix Perform basic checks and reset

  1. Ensure the ice maker is enabled in settings (toggle if applicable).
  2. Check the ice maker compartment for obvious ice jams or blockages.
  3. Unplug the refrigerator from power for 5–10 minutes to reset the control board.
  4. Plug the refrigerator back in and monitor if the ‘IS’ code clears.

Technician Only Diagnose and replace ice maker sensor if faulty

  1. Access the ice maker assembly following model‑specific guidelines.
  2. Measure the resistance of the ice maker temperature sensor and compare with expected values for the ambient temperature.
  3. Inspect wiring harnesses and connectors for damage or disconnection.
  4. If the sensor is out of specification or damaged, replace the ice maker temperature sensor or the entire ice maker assembly.
  5. Verify operation and that the ‘IS’ code does not reappear.

Parts needed: Ice maker temperature sensor, Ice maker assembly harness/connectors

🛑 When to Call a Pro:
  • If the error code persists after reset and basic checks
  • If there is visible damage to wiring or components inside the ice maker
  • If replacement parts are required but you are not experienced with refrigerator repairs

Technical Specifications

wattage 100W
component Ice Maker Assembly
resistance 10-20 ohms
part_number AJU73213301
voltage_rating 120V AC

Common Questions

What does IS error mean on LG refrigerator?

The IS error indicates a problem with the ice maker's temperature sensor, affecting ice production.

Can I fix LG refrigerator IS error myself?

Yes, you can perform basic checks and reset the ice maker; however, complicated issues may require professional help.

How much does it cost to fix IS error?

Repair costs range from ¥5,000 to ¥20,000+ for the sensor or assembly part, excluding labor.

When should I call a technician for IS?

If the error persists after resetting, or if there are visible damages, it's best to call a technician.

Sources & References

Data last verified: 2026-01-10

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