How an LG ice maker reports a fault
LG does not sell a standalone ice maker in the US — the ice maker is part of your LG refrigerator, including the Craft Ice round-ice system. That means its fault codes are refrigerator-display codes, and most ice trouble is read from observable production symptoms rather than a code. Recognising the pattern is the start of any LG ice maker repair, and it usually tells you whether the cause is the water supply, the filter, the freezer temperature or the assembly itself.
The codes you will see on the fridge display
IF (sometimes shown as 1F) points at the ice-maker fan, which keeps the ice compartment cold; if it stalls, production drops. gF flags a water-flow or low-pressure problem — a closed or kinked supply, a clogged line, or low household pressure — and is one of the most common reasons an ice maker stops. It/iT indicates an ice-maker assembly defect, a service item rather than a DIY fix. These appear on the refrigerator’s own display, not a separate panel.
Production symptoms (the primary diagnostics)
Most ice complaints are observable rather than coded: not making ice, slow or low production, small, hollow or clumped cubes, a frozen-up maker, no dispensing, leaking, or Craft Ice that is not coming out round. The usual causes are the water line and inlet valve, an overdue genuine LG water filter (change roughly every six months), a freezer that is not cold enough (ideally around −4°F), a worn door gasket — critical on French-door makers in the fresh-food zone — or the harvest assembly and control board.
What to check, and when to call
Confirm the water supply is open and the line is not kinked or frozen, change the filter if it is due, and check the freezer is cold enough and the door seals. A persistent IF or gF code, an It assembly fault, no harvest, or a leak you cannot trace needs an experienced technician with genuine parts. Walk through the guides on an ice maker not working, Craft Ice not making ice and a leaking ice maker, see the error codes library, then book ice maker repair. Confirm your model on the manufacturer’s site at lg.com/us.