Error code reference

Whirlpool Dishwasher Error Code F4

Drain system defective

Whirlpool codes Whirlpool dishwasher codes

Drain system defective - drain pump starts but after 4 minutes the water presence indicator (WI) is still in high state. Drain pump (DPM) defective, siphon blocked, control board defective, or OWL defective.

First step from the service manual

Check drain pump operation, check for blockages in siphon, verify water presence indicator (WI).

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

MyPros+ Max

Get the full diagnostic procedure for F4.

Step-by-step tests with expected resistance, voltage, and continuity values
Wiring diagram references and connector pinouts from the OEM service manual
Verified part numbers when replacement is required

Get the full procedure

$29/month · Cancel anytime · Or $9.95 3-day pass

M+

M+ Max·Whirlpool Dishwasher

F4 on my Whirlpool WDT730PAHZ

M+

Drain system defective - drain pump starts but

From Tech Sheet W12673782, p.34:

1.Check drain pump operation, check for blockages in siphon, verify water presence indicator (WI).

2.Measure drain pump winding resistance at connector J7 on the main control. Expected: 12 to 16 ohms at room temperature.

3.Back-probe the pump driver output under load. Verify the board switches the pump at 120 VAC during the drain portion of the cycle.

Part W10876537

Drain pump assembly

78,000+ service manuals · 160,000+ error codes · 55+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass

First step from the service manual

Get the full diagnostic procedure for F4.

Related Whirlpool dishwasher codes