Whirlpool GHW9100L, GHW9200L manual Touch Pad/LED Assembly, Central Control Unit CCU, Drive Motor

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Touch Pad/LED Assembly

Touchpad/LED

Assembly

Fig. 3-10

Ribbon Cable

The Touch Pad/LED Assembly, (Fig. 3-10), is removed as a single assembly and is connected to the Central Control Unit by a ribbon cable. This assembly contains all of the buttons, LEDs and ribbon cable and printed circuit boards for the user to operate the washer. This interfaces the consumer inputs to the Central Control Unit.

Central Control Unit (CCU)

The Central Control Unit is located at the top rear of the washer and is enclosed in a control box. (Fig. 3-11)There are no serviceable parts inside the control box. If diagnostic tests indicate any component of the CCU is defective, the entire con- trol box must be replaced.

The CCU receives input from the touchpad/LED assembly and directly controls the dispenser, drain pump, water inlet valves, door locking and unlocking solenoids, and heating element relay. The CCU monitors the pressure switch, flowme- ter, temperature sensor and door lock switches.

The CCU sends the customer selection input to the Motor Control Unit for proper motor operation.

The MCU operates the drive motor at varying speeds and direction based on inputs received by the CCU to complete the cycle selected. The MCU also monitors a tachometer on the motor to confirm that the drive motor is operating at the proper speed and direction.

Fig. 3-12

Drive Motor

The drive motor (Fig. 3-13)is a three-phase asyn- chronous induction type that operates at various speeds and direction based on input voltages and frequencies. A tachometer on the motor shaft sends a feedback signal to the Motor Control Unit indicating the rotation speed and direction.

Fig. 3-11

Motor Control Unit (MCU)

Fig. 3-13

The Motor Control Unit is located is inside a plas- tic control box located in the lower front corner of the washer cabinet. (Fig. 3-12)The control box is shown with the access door open.

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Contents Front-Loading Automatic Washer Model Numbers Goal and Objectives ForwardTable of Contents Page General Important Safety InformationModel Number G H W 9100 L W Whirlpool Model & Serial Number DesignatorsWhirlpool Pedestal Warranty SpecificationsWhirlpool Washer Warranty WarrantyInstallation Requirements Installation InformationTools and Parts Optional PedestalCustom undercounter installation Washer DimensionsRecessed area or closet installation Standpipe drain system wall or floor view 1Remove Transport System Installation InstructionsFor a permanently connected washer Connect the Inlet Hoses Route the Drain HoseSecure the Drain Hose To prevent drain water from going back into the washerLevel the Washer Complete InstallationInstallation Instructions Installing the Pedestal Page Introduction Theory of OperationAir Vent System Customer Interface and Cycle Selection Pressure SwitchCycle Description Rinse/Spin SoakDrain/Spin Option Selection Prewash OptionsModifiers Water Temperature GuideCentral Control Unit CCU Touch Pad/LED AssemblyDrive Motor Motor Control Unit MCUSuspension System Pump MotorEco Valve Door Lock/Switch Assembly Heating Element Temperature SensorPanel Interlock Switches Heating Element RelayPage Component Location Component AccessWasher TOP Washer BackAccessing Components in the Console Component Access10 Screw Removing the Washer Door and Door SwitchFrom the TUB Assembly Removing the BootReplacing the Boot Door Switch Removing the Detergent Dispenser Assembly Removing the Pump Assembly Removing Central Control Unit Pressure SwitchRemoving the Drive Motor Removing the Shock Absorbers Accessing Motor Control UnitRemoving the TUB Basket Assembly Removing the Heating Element Temperature SensorRemoving the Heating Element Relay Front Shock Absorber Rear Shock Reassembling Reinstalling TUB Assembly Connector Location Component TestingCentral Control Unit Component Checks Dispenser Switch and Motor Test Points ReadingWater Level Test Points Reading Water Inlet Solenoids Test Points Reading Door Lock Main SwitchesDrain Pump Motor Test Points Reading Door Lock/Unlock Solenoids Test Points ReadingMotor Control Unit Door Switch Test Points ReadingHeating Element Relay Solenoid Test Points Reading Dispenser Line FilterHeating Element Relay Solenoid Pressure SwitchSuds Detection Diagnosis & TroubleshootingDuring Drain Routine During Spin Extract RoutineLocking Door Locking and UnlockingUnlocking Child Security RoutineUnbalance Detection Routine Error Codes Motor Control Unit Error Drive Motor Tachometer ErrorOverflow Condition Motor Control Unit MCU Heat Sink Thermal TripDispenser Circuit Error Serial Communication ErrorEeprom Error Motor Control Unit MCU ErrorDoor Unlock Error Door Lock ErrorSeven, Tech Tips Starting the test mode Diagnostic TestTest Program Control during Execution Overview Test ProgramMotor Continuity Test Water Temperature SensorProblem Possible CAUSE/TEST Troubleshooting GuideBasket WON’T Rotate Reading the Cycle Charts Pump Whirlpool GHW9200L Normal/Casual Quick Wash Whirlpool GHW9200L Whirlpool GHW9100L Normal/Casual Spin Cycle LS1 Spin ProfilesSpin Cycle LS2 Spin Cycle LS4 Spin Cycle LS3Spin Cycle ES Wiring Diagram Page Manual Door Latch Tech TipsDoor Plunger To Manually unlock the door lock systemPage Product Specifications Warranty Information Sources Corporation