Whirlpool Duet Diagnostic Test Mode

NOTE: The control must be in the OFF state before pressing the touch-pad sequence to start the test.
1. Close the door.
2. Press the Control On button.
3. Select the DRAIN/SPIN cycle.
4. Select NO SPIN by pressing the SPIN SELECT button, as needed.
5. Push Prewash Option button four times within five seconds. C:00 will show in the display.
NOTE: If Model does not have PREWASH Mode as an option, press RINSE/HOLD.
If the Starting procedure fails, push PAUSE/CANCEL button. Then repeat the starting sequence again.
To advance to the next step of the test procedure, push Prewash Option button two times.

Whirlpool Duet Test Overview

Indication	Control Action	Actuators to be Checked
C:00	Door is Locked	Door Lock System
C:01	Filling by cold water inlet valve	Flowmeter, Cold water inlet valve
C:02	Distribution system is set to Prewash position	Dispenser motor, Dispenser contact
C:03	Fill by hot water inlet valve	Hot water inlet valve
C:04	Basket rotates clockwise at wash speed	Motor, MCU control
C:05	Heater is switched ON. Basket rotates clockwise with wash speed. If there is not enough water in the tub, the water inlet valve will be switched ON to fill-in the minimum water quantity. NOTE: On GHW 9100 Models only the Temperature Sensor will be checked	Heater, Temperature Sensor
C:06	Drain Pump is ON	Drain Pump
C:07	Basket rotates counterclockwise from 35 to 90 rpm within 15 seconds	Motor, MCU control
C:08	Basket rotates counterclockwise with max. speed Basket speed > 1100 rpm	Motor, MCU control

Whirlpool Duet Component Testing

CENTRAL CONTROL UNIT (CCU)

duest washing machines repair test points

"How Do I Use A Voltmeter?"

NOTE: Connector Test Points Are Numbered 1234567 From Right To Left When The Connector Is Plugged In Looking From Behind

Whirlpool Duet Dispenser Switch and Motor
Switch Test Points 6 & 5 = 0 ohms
Motor Test Points 3 & 1 = 1400 ohms

Whirlpool Duet Door Lock/Unlock Solenoids
Unlock Solenoid = 60 ohms
Lock Solenoid = 60 ohms

Whirlpool Duet Door Lock Main Switches
To check the door lock main switches, the door must be locked. Begin by selecting a cycle and press START. You will hear the door lock solenoid engage. Unplug the washer from the wall outlet and check for continuity at the following points.
Main Switch 1 Test Points 5 & 4 = 0 ohms
Main Switch 2 Test Points 2 & 1 = 0 ohms

Whirlpool Duet Drain Pump Motor
15 ohms

Whirlpool Duet Door Switch
Door Open = 0 ohms
Door Closed = Infinity

Whirlpool Duet Heating Element
Between Terminals or test points 1 & 2 = 15 ohms

Whirlpool Duet Motor Control Unit (MCU)
Motor Connector Test Points 1 & 2 = 6 ohms
Motor Connector Test Points 1 & 3 = 6 ohms
Motor Connector Test Points 2 & 3 = 6 ohms
Motor Connector Test Points 4 & 5 = Tachometer

Whirlpool Duet Temperature Sensor

Temperature	Proper Resistance Level
32°F(0°C)	35.9K Ω
86 ° F (30° C)	9.7K Ω
104° F (40° C)	6.6K Ω
122° F (50° C)	4.6K Ω
140° F (60° C)	3.2K Ω
158° F (70° C)	2.3K Ω
203° F (95° C)	1K Ω

(How to use a Voltmeter)

Whirlpool Duet Water Valve Solenoids

Hot Water Valve Solenoid = 800 ohms
Cold Water Valve Solenoid = 800 ohms