LNXC23766D is LG’s model number for this Door-in-Door refrigerator. LG’s own US product page flags this exact model discontinued (read 24 September 2026); it is out of production but not out of the field, and it is exactly the kind of model that has nowhere else to turn for support. On this platform, the FS fault code is one of the more common reasons it gets a service call.
Service calls on this refrigerator most often trace to one of a short list: the FS, rS or dS fault codes. We confirm which one applies against the model and serial number before ordering a part.
Key Features
- Frost-free cooling with a fan-driven air path between compartments
- Electronic temperature control with a digital or touch display
- Door-in-Door refrigerator
- Rated at 23 cu. ft.
Most Common Issues on This Model
01
FS fault code — freezer sensor
02
rS fault code — refrigerator sensor
03
dS fault code — freezer defrost sensor