Water remains in the bottom of the tub between cycles, slowly seeping back after draining.

Safety First: Turn off power before working under the sink or on the drain hose.

• 1. Verify high loop: Ensure the drain hose is routed up to the underside of the countertop before going down to the sink or disposal.
• 2. Inspect check valve: Many Frigidaire models have a check valve in the sump or drain hose. Inspect and clean or replace if stuck open.
• 3. Check disposal connection: Ensure the disposal is not backing water into the dishwasher; clear any clogs in the disposal.

Correct hose routing and a functioning check valve usually resolve backflow issues.