Error code reference

Whirlpool Dishwasher Error Code FA

OWI (Optical Water Indicator) defective

OWI (Optical Water Indicator) defective - flowmeter signals receipt of 3.4 liters of water but OWI signal (water in sump) is missing.

First step from the service manual

Clean the OWI lens, run water inlet for 10 sec and wash pump (SPM) for 10 sec; if still no signal, FA fault is confirmed.

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

MyPros+ Max

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

M+

M+ Max·Whirlpool Dishwasher

FA on my Whirlpool WDT730PAHZ

M+

OWI (Optical Water Indicator) defective

From Tech Sheet W12673795, p.47:

1.Clean the OWI lens, run water inlet for 10 sec and wash pump (SPM) for 10 sec; if still no signal, FA fault is confirmed.

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

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