ErrorCodeDoctor
LG · Refrigerator (French Door)

LG Refrigerator (French Door) gF error code

Difficulty: Medium · Cost: $0–$200 · Duration: 5–10m

The gF error means your LG refrigerator has detected a problem with the water flow sensor or the water supply pressure coming into the unit. The flow sensor monitors how much water is being delivered to the ice maker — if it malfunctions the ice maker may overfill with water or not fill correctly. Low water pressure from the household supply can also trigger this error. Increasing the water pressure resolves it in some cases but if the error persists the flow sensor will need to be inspected and replaced by a technician.

Common causes

  • Water flow sensor has malfunctioned and is giving incorrect readings
  • Household water supply pressure is too low for the refrigerator to operate correctly
  • Water inlet valve is partially blocked reducing flow to the ice maker
  • Flow sensor wiring is loose or damaged

How to fix it

  1. 1

    Check the water supply valve behind the refrigerator and make sure it is fully open

  2. 2

    If water pressure seems low partially increase it at the supply valve

  3. 3

    Check that the water supply line is not kinked or pinched

  4. 4

    Restart the refrigerator and check if the gF error clears

  5. 5

    If the ice maker has been overfilling with water the flow sensor is likely faulty and needs replacing by a technician

  6. 6

    If gF persists after checking pressure and supply contact a technician for flow sensor inspection

Related LG Refrigerator (French Door) error codes

1

OF F

Demo mode is active — all cooling has been disabled

easy
2

FS

The freezer temperature sensor has a short circuit or disconnection

hard
3

rS

The refrigerator temperature sensor has a short circuit or disconnection

hard
4

dS

The defrost sensor has a short circuit or disconnection

hard

gF error — frequently asked questions

What does the gF error mean on a LG refrigerator (french door)?

The water flow sensor has a fault or the water pressure is too low

What causes the gF error?

The gF error is usually caused by: Water flow sensor has malfunctioned and is giving incorrect readings; Household water supply pressure is too low for the refrigerator to operate correctly; Water inlet valve is partially blocked reducing flow to the ice maker; Flow sensor wiring is loose or damaged.

Can I fix the gF error myself?

It's possible for a moderately handy person, but budget 5–10m and expect some disassembly.

How much does it cost to fix the gF error?

Fixing the gF error on a LG refrigerator (french door) typically costs $0–$200, depending on parts and whether you do it yourself or hire a technician.

Is it safe to keep using my refrigerator (french door) with the gF error?

In most cases yes, but it's best to address the gF error soon — see the fix steps below to resolve it.