Installation steps, filter comparisons, contaminant facts, and troubleshooting — everything in one place.
1. What Is the LG LT600P Filter?
The LT600P (Part No. 5231JA2006A/B/F/G) is a genuine OEM refrigerator water filter designed for specific LG and Kenmore French Door and Side-by-Side refrigerators. It uses activated carbon block filtration to reduce chlorine taste, lead, sediment, and other common tap water impurities — delivering cleaner, better-tasting water and ice directly from your fridge.
It is also sold under Kenmore equivalents 46-9990 and fits models in the 795.78403.800 and 79773 series.
2. Where Is the Filter Located?
LG refrigerator water filter LT600P is located inside the refrigerator compartment, typically in the upper-left corner of the fresh food section. You will see a round cartridge housing with a twist-lock cap. On some Side-by-Side models, it may be positioned in the upper-right corner.
3. How to Replace the Filter
Replacing the filter is a tool-free process that takes under two minutes. Follow these steps:
- Turn off the ice maker before starting to prevent water spillage during the swap.
- Locate the filter in the upper-left corner of your fridge fresh food compartment.
- Grip the old filter and rotate it counterclockwise (1/4 turn) to unlock it from the housing.
- Pull the filter straight out and discard it. Have a small towel ready — a few drops of water may drip.
- Remove the protective cap from your new filter.
- Align the new filter with the housing slot and push it in firmly.
- Rotate clockwise (1/4 turn) until it locks securely in place. You will feel a click or firm stop.
- Flush the system by dispensing 2–3 gallons (about 5 minutes) of water to clear any carbon fines and air pockets.
- Reset the filter indicator light — hold the Filter Reset button on your control panel for 3–5 seconds until the light turns off or changes to green.
- Turn the ice maker back on and discard the first two batches of ice.
4. How Often Should You Replace LG Refrigerator Water Filter LT600P?
LG recommends replacing the filter every 6 months or 300 gallons — whichever comes first. For a household of 4 people drinking the recommended daily water intake, 300 gallons is typically reached in about 5–6 months.
- The filter indicator light turns red or orange
- Water tastes or smells like chlorine or plastic
- Water flow from the dispenser is noticeably slower
- Ice cubes appear cloudy or have an off taste
- It has been more than 6 months since the last replacement
Waiting too long allows contaminants to pass through a saturated carbon block. Stock up with a 2-pack or 3-pack to stay ahead of replacements year-round.
5. What Contaminants Does the Filter Remove?
The filter uses an activated carbon block to reduce a range of contaminants commonly found in municipal tap water:
| Contaminant | NSF Standard | Reduction |
|---|---|---|
| Chlorine taste & odor | NSF/ANSI 42 | ✅ Certified |
| Lead | NSF/ANSI 53 | ✅ Certified |
| Sediment & particulates | NSF/ANSI 42 | ✅ Certified |
| Cysts (Cryptosporidium, Giardia) | NSF/ANSI 53 | ✅ Certified |
| Turbidity (cloudiness) | NSF/ANSI 42 | ✅ Certified |
| Asbestos | NSF/ANSI 53 | ✅ Certified |
6. Is the Filter NSF Certified?
Yes. The filter is certified to NSF/ANSI Standard 42 (aesthetic effects — chlorine, taste, odor, particulates) and NSF/ANSI Standard 53 (health effects — lead, cysts, asbestos). NSF certification means the filter has been independently tested and verified to perform as claimed — not just by the manufacturer.
7. LT600P vs LT700P vs LT800P vs LT1000P: Which Filter Do You Need?
LG has released several filter generations over the years. Choosing the wrong one means it simply will not fit your fridge. Here is how they compare:
| Feature | LT600P ★ | LT700P | LT800P | LT1000P |
|---|---|---|---|---|
| Part Number | 5231JA2006 | ADQ36006101 | ADQ73613401 | ADQ74793501 |
| Installation Type | Twist-in (1/4 turn) | Push-in (no turn) | Push-in (no turn) | Push-in (no turn) |
| Filter Location | Upper-left interior | Upper-left interior | Bottom grille | Bottom grille |
| Lifespan | 6 mo / 300 gal | 6 mo / 200 gal | 6 mo / 200 gal | 6 mo / 200 gal |
| NSF Certified | 42 & 53 | 42 & 53 | 42 & 53 | 42 & 53 |
| Fridge Era | Older LG models | Mid-gen LG models | Newer LG models | Latest LG models |
| Kenmore Equivalent | 9990 / 46-9990 | 9690 / 46-9690 | 9081 / 46-9081 | 9980 / 46-9980 |
| Interchangeable? | No | No | No | No |
LT600P vs LT700P: Key Difference
The LT600P water filter uses a twist-in mechanism (rotate 1/4 turn to lock), while the LT700P uses a push-in mechanism (press straight in, no rotation). Both sit in the upper-left interior of the fridge, but the housings are different shapes and are not compatible with each other.
LT600P vs LT800P: Key Difference
The LT800P is located in the bottom grille of the refrigerator — a completely different position from the LT600P interior location. If your filter is at the bottom front of the fridge, you need the LT800P, not the LT600P.
LT600P vs LT1000P: Key Difference
The LT1000P is LG's most recent filter generation, also located in the bottom grille. It fits the latest LG InstaView and CRAFT ICE models. If your fridge was purchased after 2018, you likely need the LT1000P rather than the LT600P.
8. Compatible Models
The filter is compatible with a wide range of LG French Door and Side-by-Side refrigerators. Common fridge models:
9. Troubleshooting: Common LG Fridge Water Problems
Fridge water tastes bad
A chlorine, plastic, or stale taste almost always means the filter is expired or was not flushed after installation. Replace the filter and flush 2–3 gallons before drinking.
Fridge water smells bad
Sulfur or musty odors can indicate a saturated carbon filter or bacterial growth in a stagnant filter. Replace immediately and sanitize the water line if the smell persists.
Slow water flow from fridge
Slow dispensing is the most common sign of a clogged filter. A new one should restore normal flow (0.5 gpm). Also check that the water supply valve behind the fridge is fully open.
LG water filter not working after install
If water will not dispense after installing a new filter, the filter may not be fully seated. Remove it, re-insert, and rotate firmly until it clicks. Also check that the filter indicator was reset.
Water leaking from filter area
A leak usually means the filter is cross-threaded or not fully locked. Remove and re-install carefully, ensuring the 1/4-turn twist is complete. If leaking continues, inspect the housing O-ring for damage.
Cloudy ice or bad-tasting ice
Discard the first two batches of ice after a filter change. Cloudy ice after that can indicate high mineral content in your water supply — this is a water hardness issue, not a filter defect.
Ready to Replace Your LG LT600P Filter?
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How often should I replace LG LT600P refrigerator water filter?
Does the LT600P water filter remove lead?
Is the filter NSF certified?
Where is the water filter located in the fridge?
What is the difference between the LT600P and LT700P?
What contaminants does the filter remove?
Why does my LG fridge water taste bad after installing the new filter?
Can I use the water for cooking and making coffee?
What happens if I do not replace the filter on time?
Is the filter compatible with Kenmore refrigerators?
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