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Thank you for your interest in the LG 26 cu. ft. Bottom Freezer Refrigerator (LRDCS2603S) model. To use a reverse osmosis (RO) system without the filter in your LG LRDCS2603S refrigerator, you can use a water filter bypass plug. This plug, with the part number ABN73019101, attaches to the water filter head and creates a direct path for water flow. It allows the water to flow to the dispenser and ice maker without going through the filtration system. This plug is specifically designed to accommodate the use of an RO system in the refrigerator without needing the filter. You can download its owner's manual through this link for more information: https://www.lg.com/us/support/product/lg-LRDCS2603S.ASTCNA0. ^Cris
Sorry, there was a problem. Please try again later.I have not tried it but the instructions say you can remove the filter and operate ok.
Sorry, there was a problem. Please try again later.