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LG·refrigeratormedium severity
LG Error Code Er gF
Flow sensor error
Common Causes
- 1Water flow sensor failure
Step-by-Step Troubleshooting
- 1
Locate the water flow sensor on the dispenser water line, typically mounted behind the fresh food compartment rear panel
- 2
Check the water supply line for kinks, frozen sections (especially in unheated garages), or crimped copper tubing at the wall connection
- 3
Remove the water filter and attempt to dispense water — if water flows without the filter, the filter housing or a clogged filter is restricting flow
- 4
Test the flow sensor by measuring resistance across its terminals — it should change as water passes through (turbine-type hall effect sensor)
- 5
Inspect the dispenser water line for a frozen section behind the refrigerator door — a common LG issue when the door heater fails
Pro Diagnostic Tip
LG flow sensors in dispenser models measure actual water throughput to control portion size. If the sensor reads zero flow but water is actually dispensing, the issue is the hall effect sensor magnet, not the water supply. The sensor wheel may have debris preventing rotation.
You Might Also Notice
- •Water dispenser not working
- •Water dispenses very slowly
- •Ice maker not filling
- •Intermittent water flow at dispenser
Parts, Cost & Difficulty
Repair Difficulty
Moderate — Some Experience NeededEstimated Repair Cost
$140–$250
Parts + labor. Free diagnosis with repair.
Parts That May Need Replacement
AJU75152603 (Water Flow Sensor)AJU55759305 (Water Inlet Valve)ADQ73613401 (Water Filter)
Do You Have the Right Tools?
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Frequently Asked Questions
What does LG error code Er gF mean?
LG error code Er gF indicates: Flow sensor error. This is a medium-severity issue affecting your refrigerator.
How do I fix LG error code Er gF?
Locate the water flow sensor on the dispenser water line, typically mounted behind the fresh food compartment rear panel Then, Check the water supply line for kinks, frozen sections (especially in unheated garages), or crimped copper tubing at the wall connection Then, Remove the water filter and attempt to dispense water — if water flows without the filter, the filter housing or a clogged filter is restricting flow There are 2 more steps — see the full troubleshooting guide above. This repair typically requires professional tools and expertise.
How do I know if my refrigerator has error Er gF?
Besides the error code on the display, common signs include: Water dispenser not working; Water dispenses very slowly; Ice maker not filling. If you notice any of these symptoms, check your refrigerator's display panel for error code Er gF.
How much does it cost to fix LG Er gF?
Repair costs for LG Er gF typically range from $140 to $250 depending on the specific cause and parts needed. EasyBear offers free diagnosis when you proceed with the repair. Call (415) 795-7300 for a same-day appointment.