Er gF Moderate Easy DIY

LG Refrigerator Er gF — Water flow sensor / low water pressure

LG Refrigerator · Error code Er gF

What Er gF Means

The flow sensor in the water dispense circuit didn't detect adequate flow during a dispense — usually a closed/kinked supply line, clogged filter, or low household water pressure.

Symptoms

  • Er gF on display
  • Dispenser produces little or no water
  • Ice maker may stop producing ice
  • Water filter status normal but no flow

Common Causes

1
Closed or partially open supply valve

Saddle valve or shutoff at the wall not fully open.

2
Kinked water line

Common behind the refrigerator after a recent move.

3
Old/clogged water filter

Filter past 6 months severely restricts flow.

4
Low household water pressure

LG requires 20–120 psi at the inlet.

5
Failed inlet valve or flow sensor

Solenoid coil weak or sensor circuit failed.

How to Fix It

  1. Confirm the water supply valve is fully open.
  2. Pull the unit out and check the water line behind it for kinks.
  3. Replace the water filter if it's older than 6 months.
  4. Test household pressure at a nearby faucet (need 20+ psi).
  5. Disconnect the supply at the inlet valve and flush a cup into a bucket — verify flow.
  6. If flow is good to the valve but dispenser still fails, replace the inlet valve assembly (which includes the flow sensor on most LG models).

Parts You May Need

If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.

Common replacement LG water filter (LT1000P / LT800P) View on Amazon→ Common replacement Water inlet valve assembly View on Amazon→

More LG Refrigerator Codes

22 22 — Compressor relay / inverter control fault 33 33 — Compressor / defrost test fault 67 67 — Door open / not fully closed 88 88 — Power-on display test (not a fault) Er CF Er CF — Condenser Fan Fault Er CO Er CO — Compressor / Communication Fault

All LG codes → All refrigerator codes →

Verified against manufacturer documentation: lg.com

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician.