LG · Refrigerator (Top Freezer)

LG Refrigerator (Top Freezer) rT error code

Difficulty: Hard · Cost: $80–$200 · Duration: Requires professional service

The rT error means your LG refrigerator has detected a fault with the room temperature sensor — the component that reads the ambient temperature around the unit to help regulate its cooling performance. A short or open circuit in this sensor means the refrigerator cannot factor in the surrounding room temperature when adjusting its cooling, which can affect efficiency and temperature accuracy. This error requires a technician to inspect and replace the faulty sensor.

Common causes

Room temperature sensor has developed a short circuit
Open circuit in the room temperature sensor wiring
Room temperature sensor has malfunctioned or failed completely

How to fix it

1

Unplug the refrigerator from the outlet and wait 5 minutes
2

Plug it back in and check if the error has cleared
3

If rT returns after resetting the room temperature sensor or its wiring needs inspection and replacement by a technician