LG Refrigerator Error Codes and Fixes

If your LG refrigerator is showing Er FF, Er IS or some other code on the display and it is not cooling like it should, then this guide is for you. LG fridges do not show a full message when something goes wrong. They show a short code instead, and most of these start with Er or E. On their own, they do not tell you much about what is wrong or whether you can fix it yourself.

In this guide, you can see the error codes on LG French door, side-by-side and double door refrigerators sold in the US and India, what each code means, and what you can do about it.

The control panel above the dispenser of an LG French door refrigerator with Er FS on the display — The code shows in the temperature digits on the panel above the dispenser. Here it reads Er FS, a freezer sensor fault.

Good to know: depending on your model, the same code can start with Er, E or r, so Er FF, E FF and F all mean the same thing. Models with plain LED bars instead of digits show the same faults as a pattern of lit bars, so check your manual. To make the fridge show its error code, for example after a power cut, hold the Freezer and Express Frz buttons together for 3 seconds.

Fan Motor Codes

Code	What it means	What to do
Er FF	Freezer fan not turning	Usually ice around the fan. Unplug and leave both doors open for 24 hours, then plug in. Call LG if it returns.Some models show E FF or just F.
Er rF	Fridge fan not turning	Unplug the fridge for about 5 minutes and plug it back in. Call LG if the code returns.Some models show E rF.
Er CF	Condenser (back) fan fault	Unplug the fridge for about 5 minutes and plug it back in. Call LG if the code returns.It can clear after a restart and come back about 3 hours later. That means it needs a technician.
Er IF	Ice maker fan fault	Unplug the fridge for about 5 minutes and plug it back in. Call LG if the code returns.

Sensor Codes

Code	What it means	What to do
Er FS	Freezer temperature sensor fault	Unplug the fridge for about 5 minutes and plug it back in. Call LG if the code returns.
Er rS	Fridge sensor fault (upper)	Unplug the fridge for about 5 minutes and plug it back in. Call LG if the code returns.
Er r2	Fridge sensor fault (lower)	Unplug the fridge for about 5 minutes and plug it back in. Call LG if the code returns.
Er dS	Defrost sensor fault	Unplug the fridge for about 5 minutes and plug it back in. Call LG if the code returns.
Er rT	Room temperature sensor fault	Unplug the fridge for about 5 minutes and plug it back in. Call LG if the code returns.
Er IS	Ice maker sensor fault	Unplug the fridge for about 5 minutes and plug it back in. Call LG if the code returns.The ice maker may stop dropping ice into the bucket.
Er SS	Water tank sensor fault	Unplug the fridge for about 5 minutes and plug it back in. Call LG if the code returns.

Defrost Codes

Code	What it means	What to do
Er dH	Defrost failed	Unplug it and leave the doors open so the ice melts (about a day in summer, up to three in winter). Call LG if it returns.Also shown as FdH or dHF. A blocked drain hole is a common cause.
Er H	Defrost failed	Unplug it and leave the doors open so the ice melts (about a day in summer, up to three in winter). Call LG if it returns.Same as Er dH.
Er d1	Ice on the cooling plate	Reset it first. If it stays, unplug and leave the doors open for at least 12 hours, then call LG if it returns.
Er d2	Ice on the cooling plate	Reset it first. If it stays, unplug and leave the doors open for at least 12 hours, then call LG if it returns.
Er d	Ice on the cooling plate	Reset it first. If it stays, unplug and leave the doors open for at least 12 hours, then call LG if it returns.
Er H1	Ice on the cooling plate	Reset it first. If it stays, unplug and leave the doors open for at least 12 hours, then call LG if it returns.
Er H2	Ice on the cooling plate	Reset it first. If it stays, unplug and leave the doors open for at least 12 hours, then call LG if it returns.

Ice and Water Codes

Code	What it means	What to do
Er gF	Water flow sensor error	Make sure the water tap is fully open, the hose is not kinked and the pressure is good. Then restart the fridge.
Er It	Ice maker motor fault	Unplug the fridge for about 5 minutes and plug it back in. Call LG if the code returns.
Er tt	Water tank missing or not seated	Check the water tank is fitted properly. If the code stays, call LG.

Cooling and Refrigerant Codes

Code	What it means	What to do
Er CH	Weak cooling or refrigerant leak	Close the doors fully and let it cool, then unplug for 5 minutes. Call LG if it stays.After a repair, give the freezer about 24 hours to get cold first. On a new install it can mean a sealed system problem.
Er CL	Weak cooling or refrigerant leak	Close the doors fully and let it cool, then unplug for 5 minutes. Call LG if it stays.Same as Er CH (CH points to the high side, CL to the low side).
Er FU	Freezer not getting cold	Unplug for 60 seconds and plug straight into a wall socket. Set the freezer to 0°F (-18°C) and check the door seals and vents.

Communication Codes

Code	What it means	What to do
Er CO	Main board and display not talking	Unplug the fridge for about 5 minutes and plug it back in. Call LG if the code returns.A blinking panel light can mean the same thing.
Er C1	Dispenser and display not talking	Unplug the fridge for about 5 minutes and plug it back in. Call LG if the code returns.

Other Internal Fault Codes

Code	What it means	What to do
Er Od	Internal part or wiring fault	Unplug the fridge for about 5 minutes and plug it back in. Call LG if the code returns.
Er Sd	Internal part or wiring fault	Unplug the fridge for about 5 minutes and plug it back in. Call LG if the code returns.
Er CI	Internal part or wiring fault	Unplug the fridge for about 5 minutes and plug it back in. Call LG if the code returns.
Er IU	Internal part or wiring fault	Unplug the fridge for about 5 minutes and plug it back in. Call LG if the code returns.
Er Id	Internal part or wiring fault	Unplug the fridge for about 5 minutes and plug it back in. Call LG if the code returns.
Er gS	Internal part or wiring fault	Unplug the fridge for about 5 minutes and plug it back in. Call LG if the code returns.
Er F1	Internal part or wiring fault	Unplug the fridge for about 5 minutes and plug it back in. Call LG if the code returns.
Er F2	Internal part or wiring fault	Unplug the fridge for about 5 minutes and plug it back in. Call LG if the code returns.
Er US	Internal part or wiring fault	Unplug the fridge for about 5 minutes and plug it back in. Call LG if the code returns.
Er LS	Internal part or wiring fault	Unplug the fridge for about 5 minutes and plug it back in. Call LG if the code returns.
Er E1	Internal part or wiring fault	Unplug the fridge for about 5 minutes and plug it back in. Call LG if the code returns.
Er E2	Internal part or wiring fault	Unplug the fridge for about 5 minutes and plug it back in. Call LG if the code returns.
Er r	Internal part or wiring fault	Unplug the fridge for about 5 minutes and plug it back in. Call LG if the code returns.

Demo Mode and Room Temperature Codes

Code	What it means	What to do
OFF	Display (demo) mode, no cooling	Open a fridge door, hold Refrigerator and press Ice Plus 3 times until it beeps. On 2018 and older models, hold both for 5 seconds.Not a fault. Indian models: hold both for 10 seconds. If it came on while wiping the panel, unplugging for 10 seconds can clear it.
Lo	Room is below 14°F (-10°C)	Not a fault. The fridge will not work well until the room warms up.
HI	Room is above 122°F (50°C)	Not a fault. The fridge will not work well until the room cools down.

For most codes, the first step is the same: unplug the fridge for about 5 minutes and plug it back in. If a code keeps coming back after the checks above, stop using the fridge and call LG, as it usually points to a part that needs a technician.

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