LG LCSP1110ST Repair & Common Issues

LCSP1110ST is LG’s model number for this countertop microwave. 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 F3 fault code is one of the more common reasons it gets a service call.

Service calls on this microwave most often trace to one of a short list: the F3 fault code, keypad or touch control going unresponsive, or vent fan or light failing on an over-the-range model while heating still works. We confirm which one applies against the model and serial number before ordering a part.

Key Features

Electronic touch control with a digital display and clock
Turntable-driven even heating
Countertop microwave

Most Common Issues on This Model

01

F3 fault code — control fault LG documents specifically for microwaves

02

Keypad or touch control going unresponsive

03

Vent fan or light failing on an over-the-range model while heating still works

Error Codes Common to This Model

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FAQ

LG LCSP1110ST FAQ

On this platform, F3 points at control fault LG documents specifically for microwaves. Confirm the exact code shown before assuming it is the same fault another LG microwave would show for the same letters — LG does not use one fault-code scheme across every appliance line.

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. Most faults on this platform are isolated to one component rather than the whole unit, so a working diagnosis usually answers that question better than the model's age alone.