A:Answer The LG Smart Top Control Dishwasher with 1-Hour Wash & Dry, QuadWash® Pro, TrueSteam® and Dynamic Heat Dry™, Model # LDPH7972S features a Safety Float Switch that actuates in order to prevent the dishwasher from overflowing. In the event of water leakage, the dishwasher makes an alert sound for 10 seconds, and runs the drain pump intermittently. The display will show an AE or E1 error code to indicate a possible leak...^Ivan