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Error code · Dishwasher

Whirlpool Built-In Dishwasher F6E4: Float Switch and Leveling

F6E4 on Whirlpool built-in dishwashers, including the WDT750SAHZ, lists the water float switch as the potential cause. The float switch sits in the tub and tells the control when the water level is too high. If…

Medium · inspection needed
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Code
F6E4
Appliance
Dishwasher
Brand
Whirlpool
Warranty
30-day workmanship

What F6E4 means

F6E4 on Whirlpool built-in dishwashers, including the WDT750SAHZ, lists the water float switch as the potential cause. The float switch sits in the tub and tells the control when the water level is too high. If the dishwasher is out of level, or the float is stuck or its circuit is interrupted, the control raises F6E4 and stops. Owners see the code, and the dishwasher may refuse to run.

Common causes of F6E4

  • Dishwasher not level in the opening
  • Float and its movement in the tub
  • Float switch wiring and connector
  • Control reading of the float circuit
✓ One safe check you can try

1. Make sure the dishwasher sits level front to back and side to side, using a level on the rack rails. Do not tilt it with water inside. 2. Cycle the power: unplug for 30 seconds and plug back in, or switch the breaker off for 30 seconds if hard-wired. 3. Close the door and start a cycle. 4. If F6E4 returns, book a visit.

! Why to stop there
  • Leveling is something you can check, but a stuck float or loose wiring is not visible from the outside
  • Overfilling is possible if the float is not telling the truth, so we do not suggest repeated runs
  • We inspect the float and circuit, then give a written price before work
Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.
→Same appliance

Other Dishwasher codes

F7E2Whirlpool Dishwasher Code F7E2: Wash Motor Not Responding F8E1Whirlpool Dishwasher F8E1 or H20: Not Detecting Water F8E2Whirlpool Built-In Dishwasher F8E2 and the Fill Valve Circuit F8E4Whirlpool Dishwasher F8E4 Error on a New Install: Fill and Float Checks F8E5Whirlpool Dishwasher Code F8E5: Fill Valve Stuck Open, Act Now F9E1Whirlpool Built-In Dishwasher F9E1 Means Water Is Draining Too Slowly F9E2Whirlpool Dishwasher Code F9E2: Drain Motor Circuit Check FAE4Whirlpool Dishwasher FAE4 or F10E4 Points to the Diverter Valve
F6E4F6E4 questions
Why does leveling matter for F6E4?

The float switch reacts to water position. A dishwasher sitting tilted can make the water level read wrong, so the control stops the cycle and shows F6E4.

Is it okay to keep restarting with F6E4?

We would not. If the float is not reading correctly, the tub can take on too much water. After a power reset and a level check, a repeat of the code calls for a visit.

Do you fix the leveling too?

Yes. If the dishwasher is out of level in its opening, we correct the leveling during the same visit, together with testing the float switch and its circuit.

Book a visit

Still seeing F6E4?

A technician diagnoses it on site and gives you the price in writing before any work starts.

(713) 589-6107