Written by
Maya Chen Editorial TeamPublished September 5, 2026Updated October 20, 2026
Error codeFS
ApplianceRefrigerator
Quick answer
FS on an LG refrigerator is a freezer temperature sensor fault that needs professional inspection.
Model compatibility: LG reuses codes across series and model years, so FS 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
Freezer temperature sensor fault: a short or disconnection of the freezer sensor.
FS on an LG refrigerator is a freezer temperature sensor fault, described as a short or a disconnection of the freezer sensor. LG says it reduces how well the appliance performs. It is listed for refrigerators generally.
Display and next step
Analog panels show it with -17°C, -18°C, -20°C and -23°C. LG lists no troubleshooting for the owner; it asks for a professional inspection and a repair service. A technician checks the connection of each sensor.
An LG refrigerator showing FS in Los Angeles can be booked in at (310) 742-8008. Read out the code and the model number, and say what you tried first. See also LG refrigerator repair.
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.
