Pressure switch error — water level sensor malfunction detected
The F3E2 error on the Whirlpool WDT730PAHZ indicates pressure switch error — water level sensor malfunction detected. This typically occurs due to failed water level pressure switch or float switch. Most homeowners fix this in 15–20 min by following the steps below.
Common Causes of F3E2
- 1Failed water level pressure switch or float switch
- 2Float switch stuck in the raised position simulating overfill
- 3Air hose connecting the float to the pressure switch kinked or cracked
- 4Control board pressure switch circuit failure
How to Fix F3E2
- 1
Step 1
Unplug the dishwasher before reaching inside the tub
- 2
Step 2
Unplug the unit for 5 minutes to allow the control board to reset
- 3
Step 3
Remove the bottom rack and inspect the float switch — a small plastic dome or cap near the front corner of the tub
- 4
Step 4
Manually press and release the float several times to confirm it moves freely without sticking
- 5
Step 5
Run a test wash cycle after restoring power to see if the error clears
- 6
Step 6
Call a technician if the error persists — the pressure switch or float assembly needs professional testing and replacement
Tools Needed
When to Call a Technician
Float moves freely and error still returns — the pressure switch, air hose, or control board circuit needs replacement
Frequently Asked Questions
Common questions about Whirlpool F3E2 error
The F3E2 error on the Whirlpool WDT730PAHZ means the dishwasher's water level sensor, also called a pressure switch or float switch, is malfunctioning. This sensor tells the control board how much water is in the tub during filling. A faulty reading can prevent the dishwasher from filling correctly or cause it to stop mid-cycle.
Yes. With the dishwasher disconnected from power, remove the bottom rack and locate the small plastic float cap near the front corner of the tub floor. Press it down and let it spring up freely several times. If it sticks in the up position, cleaning around its base with a damp cloth often frees it. If it remains stuck, the float assembly may need replacement.
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