Whirlpool GVW9959K-0 Motor and Motor Control System Test, Machine Control Relay, Motor Controller

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Motor and Motor Control System Test

These tests check the machine controller power to the motor controller, the motor controller board, the wiring connections between the control board and the drive motor, and the drive motor itself.

Machine Control Relay

1.Check for 120VAC on the power cord connection to the line filter. If no AC power is present, replace the power cord.

2.Check for 120VAC on the line filter connection to the machine controller. If no AC power is present, replace line filter.

3.Check for 120VAC to the control board. With the washer off but connected to the AC outlet, measure the AC voltage between Pins 4 and 2 at connector P16.

•If 120VAC is present, continue with remaining Trouble Shooting Tests as needed.

•If voltage is not present, check circuit breaker or fuse box, power cord connection at outlet and washer.

4.Set the probes of a volt-ohmmeter between P16-5 (BK/WH) and P16-1 (WH/BU) on the ma- chine controller. Start the washer by pressing HEAVY DUTY and then START. Confirm that 120VAC is present when the relay clicks closed. Press STOP/CANCEL twice to stop the cycle.

5.Set the probes of a volt-ohmmeter between P1-1 (BK/WH) and P1-2 (WH/BU) on the motor controller. Start the washer by pressing HEAVY DUTY and then START. Confirm that 120VAC is present when the relay clicks closed. Press STOP/CANCEL twice to stop the cycle.

Motor Controller

Check power to motor controller board:

•P1 of the motor control board should have 120VAC across its two terminals when the motor controller is powered. Replace the control board if connector is broken.

Check link between machine controller and motor controller:

•With the power disconnected, check continuity between P4 of the machine controller and P2 of the motor controller. Replace upper harness if open wire is found.

Check Fuse:

•With the power disconnected, check for an open fuse. The conformal coating may need to be scratched away from the bare metal of the fuse.

•If fuse is open, replace the motor controller.

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Contents Page Introduction Table of Contents Safety MODEL/SERIAL Number Plate Serial Number DesignatorModel Number Designator Model Number G V W 9 9 5 9 K Q Installation ConsiderationsSection ONE For a permanently connected washerTools needed Parts Supplied DrainSystem ConnectingtheDrainHose InstallationChecklist Use&CareInformation Theory of Operation Section TWONutation Control PanelOperational Cycle Default Wash and Spin Option DescriptionsSoil Level Water Temp Assured Water TempATC Thresholds Whitest WhitesEnd of Cycle Signal Additional OptionsMachine Controller Motor ControllerDrive Motor Peekaboo Mode LevelerUniversal Joint Interlock Switches Drive SystemShield Capacitor Pressure Switches LOG Valve AssemblyOPR FLD Recirculation and Drain Water Pump/Pump MotorOuter Tub RecirculationDrain Changing Cycles and OptionsChanging Cycles after pressing Start Changing Options after pressing StartOperational Cycle Notes Drive Motor Notes Pump Drive Description Water Description Water Pump Drive Duration Description Water Pump Drive Pump Drive Description Action Speed Pump Drive Description Delicate/Casual SPIN+RECIRC+FILL Wash Detergent PS Controlled Recirc Spin Handwash Garments are labelled Hand Wash becauseSoak Cycle Extra RinseExtend Spin Cycle When to use Rinse & Spin To use or change Rinse & Spin settingsSuds Lock Detection/Cleanout Rinse & SpinComponent Access Special TOOLS/PARTS Required for ServiceSection Three Component LocationAccessing Components in the Console Electrostatic Discharge ESD Sensitive ElectronicsRemoving the Console Removing Console ComponentsRemoving the Machine Control Board Removing the Motor Control BoardRemoving the Pressure Switches Removing the Log Valve AssemblyAccessing Components Beneath the Washer TOP Raising the Washer Top to the Service PositionRemoving Components in the Tub Ket. FigReassembling Tub Components 18bTab Accessing Components Beneath the TUB Components Accessible with Front Cabinet Panel RemovedRemoving the Front Cabinet Panel Servicing Components from the Bottom of the Washer Removing the Drive MotorRemoving the Thrust Plate Motor mounting bracket to the motor plateRemoving the Brake Assembly/Nutate Shaft 32 shows all the components of the thrust plate assemblyRemoving the Pump and Pump Motor Replacing the CapacitorReplacing the Outer Tub Troubleshooting and Diagnosis Troubleshooting ChartSection Four Overfills Won’t NutateWon’t Spin Motor OverheatsTemperature Won’t DrainWasher Vibrating Incorrect WaterPower Failure Processor ResetError Load is WrinkledLid Switch Error Long DrainAverage Current LimitSelf Diagnostic Routines Automatic Service Diagnostics ModeOpen Lid Suds LockManual Diagnostic Mode PressSOAK Cycle Signal Soak Cycle SignalRunning Nutate or Spin Pump Drain/Recirculation Nutate and Recirculate TestWater Inlet and Dispenser VALVE, Operating PS Test Console Switches and Indicators Test If none of the LEDs light upIf a particular group of LEDs does not light up If a single LED does not light up KEY Switch Matrix Checking Touchpad FunctioningSales Demo Mode Checking Drive and Pump Motor ContinuityTroubleshooting Tests 120VAC Electrical SupplyWater Inlet and Dispenser Solenoid Test Motor and Motor Control System Test Machine Control RelayMotor Controller Automatic Temperature Control Test Drive Motor and Wiring HarnessIf the fill valves are working properly Operating and Over Fill Pressure Switch Test Drain/Recirculation TestPage Page Wiring Diagram Tech TipsSection Five Component Resistance Chart Warranty InformationUnited States Rprt