Written by
Maya Chen Editorial TeamPublished September 5, 2026Updated October 20, 2026
Error coderS
ApplianceRefrigerator
Quick answer
rS marks a sensor fault on the refrigerator side, upper part (R1). It lowers performance and calls for service.
Model compatibility: LG reuses codes across series and model years, so rS may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What this code means
rS is a fault in temperature detection on the refrigerator side, upper part (R1), which reduces performance.
The rS code, which can also read Er rS, indicates a fault in the temperature detection system on the refrigerator side, in the upper part (R1). The manual says it reduces the appliance’s performance.
How LG describes it
The help library calls it a short or disconnection of the refrigerator sensor and lists no troubleshooting steps; the unit needs a repair service. On analog display models, the same error shows as LEDs lit at -15°C, -17°C, -20°C and -23°C, and the instructions say it requires a professional inspection. A technician looks at the connection of each sensor for a short circuit or open connection.
Need a hand with rS in Los Angeles? Call (310) 742-8008 or start at LG refrigerator repair. Please have the model number and the exact code, Er rS or rS, ready.
Important safety warning. Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
Seeing this code on your LG appliance?
Book a specialist visit for a clear estimate and approval before any repair.
