Lg Refrigerator Error Er FS

⚡ Quick Answer: The LG refrigerator error code Er FS indicates a failure in the freezer temperature sensor (thermistor), leading to inaccurate temperature readings an... ✅ DIY Fixable

What Does Error Er FS Mean?

The LG refrigerator error code Er FS indicates a failure in the freezer temperature sensor (thermistor), leading to inaccurate temperature readings and improper cooling. This error may manifest as a display of dashes or blanks for the temperature, along with warmer freezer and refrigerator compartments. If not addressed, it can result in extended compressor run times and possible frost build-up. Prompt attention to this issue is essential for maintaining optimal appliance performance.

Common Symptoms:

  • Error code 'Er FS' displayed on control panel
  • Inaccurate or missing freezer temperature reading (dashes or blanks)
  • Freezer and refrigerator compartments warmer than expected
  • Potential extended compressor run times or frost build‑up

Possible Causes

  • Faulty freezer temperature sensor (thermistor) (medium)
  • Damaged or loose wiring/connectors between freezer sensor and main control board (medium)
  • Main control board misreading sensor circuit (low)

How to Fix Error Er FS

DIY Fix Basic checks and reset

  1. Unplug or turn off power to the refrigerator for several minutes to clear minor system irregularities.
  2. Check that freezer door seals properly and is closed completely during operation.
  3. Observe if the error returns after power is restored; if it persists, proceed to deeper checks.

Technician Only Diagnose and repair freezer sensor circuit

  1. Access the freezer compartment and locate the freezer temperature sensor (thermistor).
  2. Visually inspect the sensor, wiring harness, and connectors for damage, corrosion, or loose connections.
  3. Test sensor resistance with a multimeter and compare to expected values per service manual.
  4. Replace the freezer temperature sensor if faulty.
  5. Repair or replace any damaged wiring or connectors.
  6. If sensor and wiring check out, inspect the main control board’s sensor circuit for faults.

Parts needed: Freezer temperature sensor (thermistor), Wiring harness/connectors, Main control board (if necessary)

🛑 When to Call a Pro:
  • If you are uncomfortable accessing internal components or handling electrical parts.
  • If sensor and wiring checks do not resolve the error and control board diagnosis is required.
  • If symptoms include unusual noises, smells, or significant temperature loss in compartments.

Technical Specifications

wattage N/A
component Freezer Temperature Sensor
resistance 5k to 10k ohms
part_number LG 6615JB2005A
voltage_rating N/A

Common Questions

What does Er FS error mean on LG refrigerator?

The Er FS error indicates a failure in the freezer temperature sensor, leading to inaccurate temperature readings and warmer compartments.

Can I fix LG refrigerator Er FS error myself?

Yes, you can perform basic checks like resetting the power and ensuring the freezer door seals properly. If the error persists, further investigation is needed.

How much does it cost to fix Er FS error?

Repair costs for the Er FS error can range from ¥5,000 to ¥30,000+, depending on parts and labor in your region.

When should I call a technician for Er FS?

Call a technician if you're uncomfortable with internal repairs, if basic checks do not resolve the issue, or if you notice unusual noises or smells.

Data last verified: 2026-01-10

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