About this guide
- Written by ApplianceWorth Editorial Team
- Technical contact Victor — appliance technician
- Record updated 2026-07-01
- Applies to LG refrigerators
- Confidence medium
- Also displayed as 1F, EIF, ERIF
- Sources Manufacturer service documentation and field-repair experience · Methodology · Report a correction
The record-update date is a database timestamp, not proof of a fresh model-specific technical review. Check the applicability below and your manufacturer’s instructions before acting on a guide.
What this code means
The refrigerator control is no longer receiving the expected feedback from the ice-compartment fan. On segmented displays, IF can look like 1F.
Most likely causes
- Ice buildup is physically stopping the fan blade
- The ice-compartment fan motor has failed or seized
- A door-air leak or defrost problem is creating recurring frost
- The fan wiring, connector or main control is not receiving/sending the expected signal
Safe checks for the owner
- Keep refrigerator doors closed and move highly perishable food if temperatures are rising.
- Listen for abnormal fan noise and look for visible frost near accessible ice-compartment vents.
- Do not chip ice with a sharp tool or apply high heat to plastic panels.
Estimated U.S. repair cost
$280–$580, depending on model, access, parts availability and local labor.