How to Reset the Water Filter Light on an LG Refrigerator
Quick answer
After installing and flushing the new filter, press and hold the Water Filter (or Filter) button on the control panel for about 3 to 5 seconds, until you hear a chime or the indicator turns off. If nothing happens, the panel is probably locked: hold Lock for 3 seconds first. Wi-Fi models can also reset the filter in the LG ThinQ app.
Why the light stays on after a new filter
The filter indicator is a reminder, not a sensor. It counts down to the next change and stays on until you reset it, even with a new filter installed. Some models beep once when you press the button and again when the reset is accepted.
Reset by control panel
- Water Filter or Filter button: press and hold it for about 3 seconds. Some models need up to 5 seconds, or until a second beep.
- No Filter button: on some models the reset is on a button labelled ICE PLUS, Express Frz. or Light/Filter. Your owner's manual names the right one.
- LG ThinQ app (Wi-Fi models): open the fridge in the app, go to Useful Features, then Filter Management, then Filter Usage, and reset the water filter. The same screen resets the air filter.
If the light won't reset
- Unlock the control panel first: hold the Lock button for 3 seconds, then try the reset again.
- Press the center of the button's label and keep holding: LG's soft-touch buttons may ignore an off-center press, and a short tap only shows the filter status.
- Some LG models only allow a reset once the indicator has counted down to zero, even if you changed the filter early.
- If the light still won't clear, LG suggests contacting LG support.
The air filter light is separate
Many LG refrigerators also have an air filter indicator. After changing the LT120F air filter, hold the Air Filter button for 3 seconds to reset it.
The right filter for your LG fridge
LG LT1000P Refrigerator Water Filter
Fits LFCS27596S, LMXS28626S, LRMXS2806S, LRFXC2606S, LRSOS2706S, LF30S8210S, LF29H8330S, LRFWS2906S and 15 more LG models.
Save on your next change: Genuine 2-pack (LT1000P2) Genuine 3-pack (LT1000P3)
As an Amazon Associate I earn from qualifying purchases. We verify the genuine filter only. Non-genuine results aren't checked by us: confirm the listing names your model and an NSF/ANSI certification. Multi-pack links are Amazon searches for the manufacturer's own pack: check the brand and pack size on the listing.
LG LT700P Refrigerator Water Filter
Fits LFDS22520S, LFX28968ST, LFXC24726S, LMXS27626S.
Save on your next change: Genuine 3-pack (LT700P-3)
As an Amazon Associate I earn from qualifying purchases. We verify the genuine filter only. Non-genuine results aren't checked by us: confirm the listing names your model and an NSF/ANSI certification. Multi-pack links are Amazon searches for the manufacturer's own pack: check the brand and pack size on the listing.
LG LT800P Refrigerator Water Filter
Fits LSXS26326S, LMXS30776S, LSXS26366S.
Save on your next change: Genuine 3-pack (LT800P-3)
As an Amazon Associate I earn from qualifying purchases. We verify the genuine filter only. Non-genuine results aren't checked by us: confirm the listing names your model and an NSF/ANSI certification. Multi-pack links are Amazon searches for the manufacturer's own pack: check the brand and pack size on the listing.
LG LT600P Refrigerator Water Filter
Fits LSC24971ST, LSC27931ST, LMX25984ST, LFX25961AL.
Save on your next change: Genuine 3-pack (LT600P-3)
As an Amazon Associate I earn from qualifying purchases. We verify the genuine filter only. Non-genuine results aren't checked by us: confirm the listing names your model and an NSF/ANSI certification. Multi-pack links are Amazon searches for the manufacturer's own pack: check the brand and pack size on the listing.
Don't see your model? Search by model number or browse all LG models.
Frequently asked questions
How long do I hold the LG water filter reset button?
About 3 seconds on most models and up to 5 seconds on some, until you hear a chime or the indicator changes. Letting go early just displays the filter status.
Why won't my LG water filter light reset?
The control panel is usually locked: hold Lock for 3 seconds to unlock it first. Some models also won't reset until the filter indicator has reached zero.
Do I have to change the LG filter before resetting the light?
No, the reset works either way. But the light is LG's reminder to replace the filter about every 6 months, so if it's been that long or the water flow has slowed, replace the filter first.
Related guides
Sources
- Reset water filter indicator light (LG Canada)
- How to replace the water filter in your LG refrigerator (LG USA)
- Water filter installation: refrigerator (LG USA help library)
Steps can vary by model and production year. When in doubt, follow your owner's manual.