The filter icons on the LG LRMVS3006 come in two kinds. The water filter icon lights when it is time to replace the cartridge, about every six months, and after replacing it you hold the Water Filter button for three seconds to turn the light off. The Fresh Air Filter icon lights for the air filter, also about every six months, and you hold the Fresh Air Filter button three seconds to reset it. LG lists the cartridges: LT1000P, LT1000PC, LT1000PCS or ADQ747935** for water, and LT120F for air.
Differential
Likely causes of “LG refrigerator water-filter light will not reset or filter message remains”, and how to tell them apart
- 1
The water filter is due for replacement
What separates it The Replace Filter icon lights, water is slow or the ice is smaller
How to confirm Replace the cartridge and hold the Water Filter button for three seconds to clear the icon
- 2
The air filter is due for replacement
What separates it The air filter icon lights or odors persist inside the fresh food section
How to confirm Replace the air filter and hold the Fresh Air Filter button three seconds to reset the sensor
- 3
A new filter that was never reset
What separates it The icon stays on after a fresh cartridge was fitted
How to confirm Press and hold the matching filter button for three seconds until the icon goes off
- 4
A poorly seated cartridge
What separates it Water sputters or leaks around the filter after fitting it
How to confirm Remove and refit the cartridge and cover so the tabs and hooks engage fully
Before you touch a setting
Record this first — changing settings destroys the evidence
- Which icon is lit: the water filter or the air filter
- When each filter was last changed and which cartridge number is fitted
- Whether water is slow or ice pieces are smaller than usual
Try in this order
0 of 5 completedIdentify the icon
ReversibleThe Replace Filter icon for water and the Replace Filter icon for air are different symbols. LG says to replace either about every six months or when the icon lights.
Replace the water filter
ReversibleRemove the door bin, remove the disposable filter and fit the new cartridge from the LG list. LG says replacing the filter drains about 1 oz, so wrap a cloth around the front end of the filter cover.
Reset the water filter icon
ReversibleAfter replacing, press and hold the Water Filter button for three seconds to turn the light off.
Replace the air filter
ReversibleTurn the air filter cover counter-clockwise to release it, take out the old filter, place the new filter with the side marked FRONT facing outward, and lock the cover clockwise. Then hold the Fresh Air Filter button for 3 seconds.
Flush the water system
ReversibleAfter a new water filter, dispense 2.5 gallons (10 liters) in cycles of 30 seconds on and 60 seconds off, about five minutes in total, to clear air and contaminants.
Model-specific
What is true of this model and not of its siblings
- Filter part numbers from the manual
- Water filter: LT1000P, LT1000P*, LT1000PC, LT1000PCS, ADQ747935**; replace about every six months and reset with the Water Filter button held 3 seconds. Air filter: LT120F; reset with the Fresh Air Filter button held 3 seconds.
- Parts for this problem on the LRMVS3006 (RepairClinic, 2026-09-21)
- water filter housing assembly with water inlet v, part number ADQ73913310, at $215.47; air filter cover, part number ADQ75493301, at $113.35.
- Other models this page answers
- These steps also fit models LRFVS3006 refrigerator, LRFCS25 refrigerator, LG STUDIO SRFVC2406 refrigerator, LRSXS2706 side-by-side refrigerator, LF29S8330, LF21G6200.
Stop boundary
When this stops being a self-service repair
- !If the icon stays lit after a new filter, a three-second reset and correct fitting, call LG customer service
- !If water leaks around the cartridge after fitting and re-seating, close the water valve and call LG
- !If water pressure is below 40 psi on a filtered model, call a plumber
Evidence ledger
Sources behind this answer
LG USA support page listing this model's manuals and warranty.
Parts and list prices as shown on RepairClinic's parts search for this model number on 2026-09-21.
Exact questions
Common questions
How often should I replace the water filter?+
LG says about every six months, when the Replace Filter icon turns on, when dispenser output falls, or when the rated gallons have been dispensed.
How do I reset the water filter light?+
After replacing the filter, press and hold the Water Filter button for three seconds.
Which water filter cartridges fit?+
LG lists LT1000P, LT1000P*, LT1000PC, LT1000PCS and ADQ747935** as replacement cartridges.
Which air filter fits?+
LG lists LT120F as the replacement air filter.
Why is there a small leak when I change the filter?+
LG says replacing the water filter causes a small amount of water, around 1 oz (25 cc), to drain.
Do I flush the new filter?+
Yes. Dispense 2.5 gallons (10 liters), about five minutes, in 30-second bursts with 60 seconds off.
Where can I buy the filters?+
LG says visit your local dealer or distributor, or search 'water filter' on lg.com.