What to check, in order
- Restart it
Unplug the fridge, wait 60 seconds and plug it back in, straight into a wall socket rather than a power strip or multi-socket adaptor. It can take up to 5 minutes to restart fully.
- Open the water supply
Make sure the tap feeding the fridge is fully open and water is flowing through the hose.
- Check the hose
It shouldn't be kinked anywhere between the fridge and the supply.
- Check the water pressure
LG US asks for a cold water supply at 20 to 120 psi (138 to 827 kPa). As a check, an 8 oz cup should fill from the dispenser in 3.5 to 8 seconds; longer points to low pressure.
When to call an engineer
If the tap, hose and pressure are all fine and the code stays. LG says to contact its customer support.
Good to know
- LG US suggests changing the water filter every 3 to 6 months. If water is slow, it also suggests taking the filter out and trying again to see whether the flow improves.
Parts people end up buying
Only if the checks above point to a part. Match it to your model number first: it's on a label inside the fridge, usually on a side wall, or on the back.
- Water filterSearch on Amazon
Affiliate links: as an Amazon Associate I earn from qualifying purchases, at no extra cost to you. It never changes a verdict.
Quick answers
What does the LG Er gF error code mean?
The water flow sensor isn't working properly. LG says it can be caused by a closed water tap, a kinked hose or the wrong water pressure.
Can I fix LG Er gF myself?
Easy (about 20 minutes). Start with: restart it; open the water supply; check the hose. If the tap, hose and pressure are all fine and the code stays. LG says to contact its customer support.
Is LG Er gF worth repairing?
Usually free. It's usually the water supply rather than the fridge, which costs nothing to put right.
Checked against
- LG US: refrigerator digital and analog error codes
- LG US: refrigerator water dispensing slowly
- LG UAE: how to troubleshoot the error codes on your refrigerator
Last reviewed October 2026. Manufacturers update their pages, and your manual is the final word. Spotted a mistake? Email contact@appliance-error-codes.com.