What IF means
The fan that moves cold air from the freezer to the ice maker isn't working, so ice making is affected.
Also shown as: Er IF, depending on the model.
Likely causes
- Fan blocked by ice
- Fan fault
Safe first checks
- Request service. LG lists IF among the codes that need a technician.
When to stop
Keep the doors closed meanwhile.
Checked against: LG USA Support: LG Refrigerator digital and analog error codes. Codes can differ by model and year, so confirm with your owner's manual.