How To Activate Whirlpool Duet Laundry Washer Diagnostic Tests
Information taken from: http://applianceassistant.com
NOTE: The control must be in the OFF state before pressing the touch-pad sequence to start the test. 1. Close the washer door. 2. Press the Duet Control On button. 3. Select the DRAIN/SPIN cycle. 4. Select NO SPIN by pressing the SPIN SELECT button, as needed. 5. Push PREWASH button, if existing; or, RINSE/HOLD button four times within five seconds.C:00 will show in the display. NOTE: If the starting procedure fails, push PAUSE/CANCEL button. Then try starting the sequence again. To advance to the next step of the test procedure, push RINSE/HOLD button two times.
Actuators to be Checked
Washer Door is Locked
Washer Door Lock System
Filling with cold water inlet valve
Duet washer flowmeter, Cold water inlet valve
Distribution system is set to Prewash position
Dispenser motor,Dispenser contact
Fill with hot water inlet valve
Hot water inlet valve
Duet washer basket rotates clockwise at wash speed
Duet washer Motor, MCU control
Washer's 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 GHW9100 Models only the Temperature Sensor will be checked
Duet washer Heater, Temperature Sensor
Duet drain Pump is ON
Duet washer Drain Pump
Duet washer basket rotates counterclockwisefrom 35 to 90 rpmwithin 15 seconds
Basket rotates counterclockwisewith max. speedBasket speed > 1100 rpm
Duet washer Motor,
Whirlpool Duet Washing Machine Part TestingCENTRAL CONTROL UNIT (CCU)
Whirlpool Duet Dispenser Switch and MotorSwitch Test Points 6 & 5 = 0 ohmsMotor Test Points 3 & 1 = 1400 ohms
Whirlpool Duet Door Lock/Unlock SolenoidsUnlock Solenoid = 60 ohmsLock Solenoid = 60 ohms
Whirlpool Duet Door Lock Main SwitchesTo 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 ohmsMain Switch 2 Test Points 2 & 1 = 0 ohms
Whirlpool Duet Drain Pump Motor15 ohms
Whirlpool Duet Door SwitchDoor Open = 0 ohmsDoor Closed = Infinity
Whirlpool Duet Heating ElementBetween Terminals or test points 1 & 2 = 15 ohms
Whirlpool Duet Motor Control Unit (MCU)Motor Connector Test Points 1 & 2 = 6 ohmsMotor Connector Test Points 1 & 3 = 6 ohmsMotor Connector Test Points 2 & 3 = 6 ohmsMotor Connector Test Points 4 & 5 = Tachometer
86 ° F (30° C)
104° F (40° C)
122° F (50° C)
140° F (60° C)
158° F (70° C)
203° F (95° C)
Whirlpool Duet Water Valve SolenoidsHot Water Valve Solenoid = 800 ohmsCold Water Valve Solenoid = 800 ohms
If after 30 seconds the control does not detect water entering machine and then valves will be turned off and the error code will be displayed.
If the control has turned the water valves on and after 8 minutes the flow meter has detected 10.5 gallons of water passing through it, but has not detected the pressure switch trip, the valves will be turned off and the error code will flash.
If the drain time exceeds 8 minutes, the water valves are turned off and “F/02″ is flashed.
NOTE: After 4 minutes the “Sud” error will be displayed, then 4 minutes later the F02 error code will be displayed.
If during the water heating step in wash cycle, the water temperature sensor (NTC) value is out of range, or the heating element circuit has failed, the “F/05″ error code will be displayed.
The control is unable to properly detect motor speed and the machine will shut down. If a failure occurs during high-speed spin, the door will be unlocked after 3 minutes.
The Central Control Unit has detected a short in the motor control unit. If a failure occurs during high-speed spin, the door will be unlocked after 3 minutes.
If the Overflow contact on the pressure switch is Closed for more than 60 seconds and Overflow condition will occur. In an Overflow condition, the Door will remain locked, and the Drain Pump will run constantly, even if PAUSE/CANCEL is pressed twice and the Display is cleared. Unplug the unit to service.
If the thermal protector on the MCU heat sink gets too hot, it will open the thermal protector on the heat sink which will stop motor functions and an “F/10″ will be displayed.
Communication between the Central Control Unit (CCU) and the Motor Control Unit (MCU) cannot be sent correctly.
If the dispenser motor is not able to be driven to it’s proper position.
The Central Condrol Unit (CCU) receives it’s data from an EEPROMonboard the CCU. If there is an error reading this data, it will cuse this error.
If the MCU detects multiple resets or errors during a wash cycle, it will go into this error mode.
The motor control unit senses a suds lock condition by analyzing the current draw on the drive motor. If “Sud” is displayed a potential suds lock is detected. This may signify a bad pump, an extra heavy load, excessive detergent, or excessive suds.
A Door Lock Error occurs if the door cannot be unlocked. It will try to lock it 6 times before displaying the error.
A Door Unlock Error occurs if the door cannot be unlocked. It will try to unlock the door 6 times before displaying the error.