Lg Refrigerator Error Er rt

⚡ Quick Answer: The LG refrigerator error code Er rt indicates a malfunction in the room temperature sensor, which can lead to incorrect temperature readings and inad... ✅ DIY Fixable

What Does Error Er rt Mean?

The LG refrigerator error code Er rt indicates a malfunction in the room temperature sensor, which can lead to incorrect temperature readings and inadequate cooling performance. This error occurs when the sensor is shorted, open, or reporting invalid data to the control board, preventing optimal temperature regulation in the fresh-food compartment. Symptoms include the error code displayed on the control panel and rising temperatures within the refrigerator.

Common Symptoms:

  • Error code Er rt displayed on control panel
  • Temperature in fresh‑food compartment rising above set level
  • Refrigerator cooling performance impacted or fluctuating

Possible Causes

  • Faulty or open/shorted room temperature sensor (thermistor) (medium)
  • Loose or damaged wiring/connector to the room temperature sensor (medium)

How to Fix Error Er rt

DIY Fix Power cycle and basic checks

  1. Unplug the refrigerator from power for 5–10 minutes to reset electronics.
  2. Check that doors are fully closed and vents are unobstructed.
  3. Ensure the ambient room temperature around the fridge is within normal operating range (not extremely hot or cold).

Technician Only Inspect/replace room temperature sensor and wiring

  1. Access the refrigerator’s internal sensor area (typically near the top of the fresh food compartment).
  2. Test the sensor with a multimeter for expected resistance values (according to model specifications).
  3. Inspect wiring harness and connectors for continuity, shorts, or damage.
  4. Replace the room temperature sensor and/or wiring if faulty.
  5. Reassemble and verify error code no longer displays.

Parts needed: Room temperature sensor (thermistor), Wiring harness/connector

🛑 When to Call a Pro:
  • If error persists after power cycling and basic checks.
  • If there are signs of wiring damage beyond simple access.
  • If you are uncomfortable performing diagnostics beyond basic reset.

Technical Specifications

wattage
component Temperature Sensor
resistance 5k to 10k ohms
part_number LG 6615JB2005F
voltage_rating 5V DC

Common Questions

What does Er rt error mean on LG refrigerator?

The Er rt error signifies a problem with the room temperature sensor, affecting cooling and causing incorrect temperature displays.

Can I fix LG refrigerator Er rt error myself?

Yes, you can try power cycling the fridge or checking for door closures and vent obstructions as initial troubleshooting steps.

How much does it cost to fix Er rt error?

The estimated repair cost ranges from ¥5,000 to ¥18,000, depending on the sensor and labor costs in your region.

When should I call a technician for Er rt?

You should call a technician if the error persists after basic troubleshooting or if there's visible wiring damage.

Sources & References

Data last verified: 2026-01-10

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