LG · Refrigerator
LG Refrigerator IF Error Code
Ice maker fan not spinning
What this error means
IF (often shown as Er IF or 1F) means the ice maker fan motor did not report RPM to the board for more than 65 seconds. That fan pushes cold air into the ice bucket area—without it, ice production stops and the display alerts you.
How IF is detected
When IF appears on a LG refrigerator, the control board has confirmed that water did not leave the machine within the programmed drain window. On LG LRMVS3006S, LG LFXS26973S, and similar variants, the drain pump runs for a fixed interval—often three to seven minutes on washers and dishwashers—while a pressure switch or turbidity sensor verifies the tub or sump is empty. If water remains, the cycle stops to prevent spin with a full tub or overflow on the next fill.
Most IF calls are resolved without parts: unplug and leave doors open 8–12 hours on towels to melt ice around the fan. Restricted drain paths mimic pump failure because the impeller spins against a blocked hose or filter. Document whether the pump hums audibly during the drain step; a humming pump with no water movement points to a clogged filter or kinked hose, while silence may indicate a failed pump motor or loose wiring at the harness.
After clearing blockages, run a short cycle and listen at the drain hose for steady water flow. If IF returns on the next load with a clean filter and straight hose, measure resistance at the pump motor connector per the service manual for your model before ordering a replacement pump assembly.
Common causes
- Ice buildup around fan blades after door left ajar
- Failed DC fan motor in the ice maker duct
- Defrost system fault refreezing the evaporator weekly
- Door gasket leak letting humid air into the freezer
Step-by-step fixes
- 1Unplug and leave doors open 8–12 hours on towels to melt ice around the fan
- 2Verify the ice maker is ON and the freezer temp is set to 0°F or lower
- 3After thaw, listen for fan whir when the ice maker calls for cooling
- 4Replace the ice maker fan motor if blades spin by hand but motor stays silent powered
When to call a technician
IF returning within a week after manual defrost points to defrost heater or bi-metal sensor failure—not just the fan.
Affected models
- LG LRMVS3006S
- LG LFXS26973S
- LG LRFXS2503S
Prevention & maintenance
- Clean drain filters and hose terminations monthly on high-use refrigerators to prevent IF from lint and food debris buildup.
- Record when IF appears in the cycle and whether it clears after a 60-second power reset on your LG refrigerator—that detail speeds diagnosis if you call service.
- Keep the model and serial number from the rating plate when ordering parts for IF; LG uses multiple revisions with different harness lengths and board firmware.
- Photograph wiring connector orientation before disconnecting any component while troubleshooting IF; reversed plugs on pumps and valves cause immediate repeat faults.