Whirlpool Dishwasher F6E4 — Float Switch Open
Whirlpool Dishwasher · Error code F6E4
What F6E4 Means
The overfill float switch is reporting an open circuit, often because the float is stuck up or its switch has failed.
Most Likely Fix
Water inlet valve fault
Tools: screwdriver, nut driver, pliers
Diagnose first: Shut off water supply before replacing. Verify supply valve is open and screen filter at valve inlet is clear.
Find this part on Amazon →Symptoms
- F6E4 on display
- Dishwasher won't fill
- Cycle aborts immediately
Common Causes
Debris under the float in the front-right of the tub holds it up.
Microswitch under the float has gone open.
Connector under the dishwasher backed off.
How to Fix It
- Open the door and lift the float (front-right of tub floor) — it should move freely and drop back down.
- Remove any debris around the float well; clean with a damp cloth.
- If the float moves freely but F6E4 persists, pull the toe-kick and reseat the harness at the overfill switch under the tub.
- Test the switch with a multimeter — it should change state when the float is lifted.
- Replace the overfill float switch if it does not change state.
Parts You May Need
If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.
More Whirlpool Dishwasher Codes
Verified against manufacturer documentation: applianceaid.com
Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician.