LG refrigerator Er gF code: water flow sensor error

The water flow sensor is reading no flow or the wrong flow. It is usually a closed supply valve, a kinked water line or water pressure outside LG's range, rather than a failed part.

Likely causes

Listed from most to least common.

1. Water supply valve closed or only partly open
2. Water line kinked behind the fridge
3. Water pressure too low or too high
4. Clogged water filter
5. Flow sensor failed

How to fix the Er gF code

Unplug the refrigerator or switch it off at the breaker before removing any panel or filter.

1. 1

   Step 1: Reset the refrigerator

   Unplug the refrigerator for 60 seconds and plug it into a wall outlet, not a power strip. Allow up to 5 minutes for it to restart.

2. 2

   Step 2: Open the water supply

   Make sure the shutoff valve feeding the fridge is fully open and the water line is not kinked when you push the fridge back.

3. 3

   Step 3: Check the water pressure

   LG fridges need 20 to 120 psi, or 40 to 120 psi on models with a water filter. If the ice tray overfills, partly close the supply valve to lower the pressure.

4. 4

   Step 4: Replace an old filter

   If the water filter is more than 6 months old, replace it, as a clogged filter cuts flow.

You'll need: Flashlight.

Parts that may need replacing

Check your model number on the label inside the door or on the back before ordering.

• LG refrigerator water filterCheck prices
• Refrigerator water lineCheck prices

When to call a technician

If the valve is open, the line is clear and pressure is in range but gF still shows, the flow sensor or inlet valve needs service.

A typical repair for this code costs $150–$300 in the US, including parts and labor. Prices vary by area and model.

Models this applies to

• French door refrigerators (LF, LR and LM series)
• Side-by-side refrigerators (LS and LRS series)
• InstaView Door-in-Door models
• Linear and inverter linear compressor models

Codes can differ slightly between models. Your owner's manual is the final word and is available from LG support.

Common questions