Whirlpool Dishwasher Error Code F8E4 - Float Switch Stuck / Drip Pan Full

Medium Severity

The overfill float switch has been triggered by water pooling in the bottom drip tray pan beneath the wash tub.

Appliance: Whirlpool Dishwashers

Estimated Time: 25 minutes

Tools Required: Towel, 1/4 inch nut driver

⚠ Common Symptoms & Observations

Clean light flashes 8 times, pauses, flashes 4 times; drain pump runs continuously; dishwasher will not start a new cycle.

🔍 Root Causes for Code F8E4 / 8-4

Leak from diverter motor grommet seal
excess foam from liquid hand soap
faulty water inlet valve overfilling tub
misaligned door gasket.

🔧 Step-by-Step DIY Troubleshooting & Fix Guide

Cut power at the circuit breaker.

Remove the lower kickplate below the dishwasher door.

Check the plastic drip pan on the floor. If water is present, soak it up with a towel or shop vac.

Check the diverter motor shaft located directly under the center sump for water droplets.

🔄 Master Reset Procedure for Whirlpool

Once dry, run the Whirlpool Diagnostic Test: Press any 3 buttons in sequence: 1-2-3, 1-2-3, 1-2-3 (with less than 1 second between clicks) with the door open, then close the door to start auto-calibration.

Technician Tip: If the error code reappears immediately after a hard reset, the control board has detected an active electrical open circuit or failed component that requires physical inspection.