How do I fix error code E rt on a LG refrigerators?

1. undefined: Check RT sensor connector at Main PCB for loose or disconnected pins. Reconnect if necessary. 2. undefined: With power off, measure RT sensor resistance. At room temperature (~68°F/20°C) expected value is approximately 13 kΩ. 3. undefined: If resistance is 0 Ω (short), replace the RT sensor. 4. undefined: If resistance is infinite (open), check harness continuity and replace the sensor. 5. undefined: Note: E rt error is retained on display until manually cleared — it does not auto-clear after 3 hours.

LG Refrigerators

Error Code E rt

Room Temperature (Ambient) Sensor Error

Moderate

Address soon - your appliance may not work properly

How to Fix

1
Check RT sensor connector at Main PCB for loose or disconnected pins. Reconnect if necessary.
2
With power off, measure RT sensor resistance. At room temperature (~68°F/20°C) expected value is approximately 13 kΩ.
3
If resistance is 0 Ω (short), replace the RT sensor.
4
If resistance is infinite (open), check harness continuity and replace the sensor.
5
Note: E rt error is retained on display until manually cleared — it does not auto-clear after 3 hours.