What does error code E rt mean on a LG refrigerators?

Room Temperature Sensor Error Short circuit or disconnection of RT (room temperature) sensor

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

1. undefined: Step 1: Check for loose connection at Main PCB. 2. undefined: Step 2: Measure sensor resistance — if 0 ohm (short) or infinity (open), replace sensor. 3. undefined: Step 3: If resistance is within normal range for ambient temperature, explain to customer. 4. undefined: Step 4: If all check points are normal, replace the refrigerator main PCB.

LG Refrigerators2023–present

Error Code E rt

Room Temperature Sensor Error

Moderate

Address soon - your appliance may not work properly

What This Means

Short circuit or disconnection of RT (room temperature) sensor

How to Fix

1
Step 1: Check for loose connection at Main PCB.
2
Step 2: Measure sensor resistance — if 0 ohm (short) or infinity (open), replace sensor.
3
Step 3: If resistance is within normal range for ambient temperature, explain to customer.
4
Step 4: If all check points are normal, replace the refrigerator main PCB.