ErrorCodeDoctor
LG · Refrigerator (Side-by-Side)

LG Refrigerator (Side-by-Side) 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. 1

    Unplug the refrigerator from the outlet and wait 5 minutes

  2. 2

    Plug it back in and check if the error has cleared

  3. 3

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

Related LG Refrigerator (Side-by-Side) error codes

1

OF F

Demo mode is active — all cooling has been disabled

easy
2

FS

The freezer temperature sensor has a short circuit or disconnection

hard
3

rS

The refrigerator temperature sensor has a short circuit or disconnection

hard
4

dS

The defrost sensor has a short circuit or disconnection

hard

rT error — frequently asked questions

What does the rT error mean on a LG refrigerator (side-by-side)?

The room temperature sensor has a short circuit or open circuit

What causes the rT error?

The rT error is usually caused by: Room temperature sensor has developed a short circuit; Open circuit in the room temperature sensor wiring; Room temperature sensor has malfunctioned or failed completely.

Can I fix the rT error myself?

This is rated a hard fix — it often requires tools, parts, or experience, and may be safer left to a professional technician.

How much does it cost to fix the rT error?

Fixing the rT error on a LG refrigerator (side-by-side) typically costs $80–$200, depending on parts and whether you do it yourself or hire a technician.

Is it safe to keep using my refrigerator (side-by-side) with the rT error?

We'd recommend addressing the rT error before continuing to use the refrigerator (side-by-side), since hard-rated issues often involve a real fault rather than a minor glitch.