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
- Unplug the refrigerator from power for 5–10 minutes to reset electronics.
- Check that doors are fully closed and vents are unobstructed.
- 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
- Access the refrigerator’s internal sensor area (typically near the top of the fresh food compartment).
- Test the sensor with a multimeter for expected resistance values (according to model specifications).
- Inspect wiring harness and connectors for continuity, shorts, or damage.
- Replace the room temperature sensor and/or wiring if faulty.
- Reassemble and verify error code no longer displays.
Parts needed: Room temperature sensor (thermistor), Wiring harness/connector
- 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.
Next step
Choose the next step for Er rt
Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.
Most relevant component to inspect
Temperature Sensor
Monitors the internal temperature to ensure correct operation and prevent overheating.
- Typical part-only price
- $15 - $35
- DIY difficulty
- Easy
- Estimated time
- 15-30 mins
Where can I find the model number?
Check the rating label around the door, lid, frame, rear panel, or inside the appliance cabinet. Use the complete model number, including suffixes.
Verify the complete model and part number on the retailer's compatibility page before ordering.
Other parts options
Check related components first; use model search as a fallback.
Wiring Harness
Connects controls, sensors, motors, and other electrical components inside the appliance.
Model-compatible Refrigerator parts
Enter the complete model number to browse compatible replacement parts. This is a model-based parts search, not a diagnosis that a specific component failed.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. We may earn a commission from other qualifying purchases or service requests made through links on this page, at no additional cost to you. Recommendations are based on repair relevance, not commission rate.
Optional routine care
Maintenance supplies
These products support cleaning or routine upkeep. They are separate from the possible repair components above and are not claimed to fix this error code or symptom.
Refrigerator Condenser Coil Brush
For routine cleaning of accessible condenser areas where the manufacturer permits it. It does not repair a sealed-system or compressor fault.
Model-Compatible Refrigerator Water Filter
A routine replacement item on models with a water filter. Match the complete appliance model and existing filter number before ordering.
Compatibility check required: use the complete appliance model and compare the existing filter, bag, or specification before ordering.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Recommendations are based on routine-care relevance, not commission rate.
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: 2026-07-26
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