How do I adjust the rinse aid dispenser level?
The dispenser has five adjustment levels (L0 to L4) and is programmed at the factory for level 2. To adjust, ensure the appliance is off, press POWER and Remote Start simultaneously to enter Option Setting Mode, press Dry Boost to change the rinse aid dispenser setting, and press START to save. Adjust the setting higher if you have hard water and notice calcium buildup on your dishes.
From the official LG Drain Series Dishwasher manual, page 33
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