Written by
Marcus Lindqvist Appliance Care EditorPublished October 26, 2026
VERIFIED
Error codeIF (Er IF, F1)
ApplianceRefrigerator
F1, IF and Er IF all mean the same thing: trouble with the fan that sends freezer air to the ice tray. When it is blocked, ice production suffers, and the refrigerator has a sensor for spotting that blockage. Refrigerators of any kind are covered.
Frost and alignment
Frost building on that fan is one suspected cause. Crooked doors invite frost, which is why LG sends owners to its guidance on leveling the cabinet and aligning the doors. French door models add one more item: look along the gasket beside the door for tears and damage.
When leveling does not help
Should neither leveling nor alignment remove the code, repair service is the remaining route.
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The ice maker’s temperature sensor reports as IS, and its motor as It. On kimchi units a frosted fan elsewhere shows up as LF.
San Francisco repair for LG refrigerator IF codes
If leveling leaves IF on the display, call (415) 223-7887 from the city or the surrounding Bay Area. Tell us what you did with the doors and gasket, and have the model number ready. See LG refrigerator repair.
Model compatibility: LG reuses codes across series and model years, so IF (Er IF, F1) 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
The ice maker fan has a fault, and frost around it is one cause LG names.
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.
You submit a request with your appliance model and symptom, we confirm an appointment window, and a technician performs an on-site diagnosis. You then receive a clear estimate and decide whether to proceed before any repair begins.
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Replacement parts are selected for the exact model and confirmed with you before ordering or installation.
Service areas are listed on the Locations page. Contact us with your ZIP code to confirm current coverage for your address.
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