Whirlpool GHW9100L Drive Motor Tachometer Error, Motor Control Unit Error, Overflow Condition

Page 49

 

 

ERROR CODES

 

 

 

DISPLAY

 

EXPLANATION AND RECOMMENDED PROCEDURE

F/06

Drive Motor Tachometer Error

 

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.

 

Potential Causes

 

• Check wire harness connections between the Drive Motor/Tachometer and the

 

 

Motor ControlUnit (MCU), and between the MCU and the Central Control Unit

 

 

(CCU)

 

• Check the Drive Motor

 

Check the MCU

 

• Check the Wire Harness

F/07

Motor Control Unit Error

 

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.

 

Potential Causes

 

• Check wire harness connections between the Drive Motor and the Motor Control

 

 

Unit (MCU), and between the MCU and the Central Control Unit (CCU)

 

Check the MCU

 

• Check the Drive Motor

 

• Check the Wire Harness

 

 

F/09

Overflow Condition

 

If the Overflow contact on the pressure switch is Closed for more than 60 seconds

 

an 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.

 

Potential Causes

 

• Check the drain hose and make sure it is not plugged or kinked

 

• Check Wire Harness connections to the Drain Pump, Pressure Switch, and

 

 

Central Control Unit (CCU)

 

• Check/ Clean Drain Pump Filter of foreign objects

 

• Check for Drain Pump Failure

 

• Check the Inlet Valve for proper shut off

 

• Check the Pressure switch for proper operation

 

 

F/10

Motor Control Unit (MCU) Heat Sink Thermal Trip

 

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.

 

Potential Causes

 

• Check for Proper Installation, verify the unit is not located near a source of heat

 

 

and has proper ventilation.

 

• Check Wire Harness connections to the MCU, the motor, and Central Control

 

 

Unit (CCU)

 

• Check the Drive system for any worn or failed components

 

Check MCU

 

Check Motor

 

 

 

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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