Written by
Maya Chen Editorial TeamPublished September 5, 2026Updated October 20, 2026
Error codegF
ApplianceRefrigerator
Quick answer
gF on an LG refrigerator is a water flow sensor fault. LG lists a restart and checks on the tap, hose and pressure.
Model compatibility: LG reuses codes across series and model years, so gF 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
Water flow sensor fault, possibly from a closed water tap, a kinked hose or incorrect water pressure.
The gF code on an LG refrigerator points to the water flow sensor. A closed water tap, a kinked hose or incorrect water pressure can set it off. LG also notes that an ice maker overfilling with water may mean the flow sensor is malfunctioning. The code is listed for refrigerators generally.
What LG suggests
Unplug the refrigerator and wait 60 seconds.
Turn it back on, plugged into a direct socket with no power strips or multiple sockets.
Allow up to 5 minutes for the appliance to restart fully.
Confirm the water tap is fully open and water reaches the appliance through the hose, which must not be kinked.
Check the water pressure. If it is low, partially increase it.
If gF stays on an LG refrigerator in Los Angeles, call (310) 742-8008. Have the code, the model number and anything you already tried in front of you. Details on LG refrigerator repair are online.
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.
