Product review (3 stars): Newbie Filter Replacers Troubleshooting Tips
Instructions were confusing for first time install. Had to go online to find out proper way to replace the filter which wasn't as intuitive as you'd expect.

Troubleshooting tips:
- Make sure LG refrigerator Lock light is off (open door and push button for 3 seconds)
- Remove the top shelf of the refrigerator so that the swinging door of the filter housing can fully extend to the bottom before removing the cartridge (if you simply pull without removing the shelf and fully bringing down the plastic housing, you can break the connector)
- Water runs blue so keep running it in periodic cycles until it runs clear, if you continuously run the water dispenser you can cause damage to the refrigerator connection line due to the sporadic initial pressure of the replacement filter