Whirlpool MFW 9600S manual TOUCHPAD/LED Assembly, Central Control Unit CCU, Motor Control Unit MCU

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TOUCHPAD/LED ASSEMBLY

The Touchpad/LED Assembly is removed as a single assembly and is connected to the Cen- tral Control Unit by a ribbon cable. This assem- bly contains all of the buttons, LEDs and ribbon cable and printed circuit boards for the user to operate the washer. This interfaces the con- sumer inputs to the Central Control Unit.

Ribbon Cable

Touchpad/LED

Assembly

CENTRAL CONTROL UNIT (CCU)

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

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

The CCU sends the customer selection input to the Motor Control Unit for proper motor opera- tion.

Central Control Unit

MOTOR CONTROL UNIT (MCU)

The Motor Control Unit is located inside a plastic control box located in the lower front corner of the washer cabinet. The control box is shown with the access door open.

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 operat- ing at the proper speed and direction.

Motor Control Unit

DRIVE MOTOR

The drive motor is a three-phase asynchro- nous 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.

Drive Motor

3-4

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Contents Epic Goals and Objectives ForwardTable of Contents Wiring Diagram General Safety FirstModel & Serial Number Designations Model NumberSerial Number Model & Serial Number Label Tech Sheet Locations Specifications Maytag Corporation Major Appliance Warranty Page 79372 12345665417289192438675445627 932726757947867 75445627834473$4487968258928 #678#87968258928Electrician+ 2273 1233456768479346724$%&%*$% ,&## 2$&+1234546#2&%2$!#2 &-.0$$+&. /+2+$ &+&+$&#0 787 3887878 #$%2&&8$87Theory of Operation AIR Vent System Pressure Switch Central Control Unit CCU TOUCHPAD/LED AssemblyMotor Control Unit MCU Drive MotorPump Motor ECO ValveSuspension System Heating Element Temperature Sensor Door LOCK/SWITCH AssemblyInterlock Switches 72717 9717719978234567896358769795947 42OFF567897977979992869795947679476 346286979594767947Modifier6.766765677866767 123456789382945875694878594587 345647 123455367892234563789682 7397826739868934345#5&6 $747Sturdy colorfast fabrics 123456712345678935 88#$ 888897779 897789777 77 7#Ordisconnect83783power 83783### 123456376468with liquid detergent64326%9894 %24 352631234567 35 37 5 67 9728879 8312345674674Component Locations Component AccessTo remove the console Removing the Console and the Touchpad / LED AssemblyTo remove the touchpad / LED assem- bly Door Lock/Switch Assembly Bellows Retaining Wire To remove the door lock/switch as- sembly To remove the front panel and bellowsOn the next Remove the end of the dispenser tube from the bellows Removing the Flowmeter To remove the detergent dispenser motor Removing the Detergent Dispenser Motor & AssemblyTo remove the detergent dispenser as- sembly Removing the Inlet Valves Removing the Central Control Unit Removing the Interference Filter Removing the Pressure Switch Removing the Motor Controller Wire Standoff Removing the Temperature Sensor Heating Element To remove the temperature sensorTo remove the heating element Removing the Drain Pump Assembly Removing the Airtrap Removing AN Interlock Switch Rotate Switch Up Switch Holder Locking Tabs Removing the Drive Motor Pivot Stud Removing the TUB and Basket Assembly Align Tabs With Slots Support Weight While Removing Front Slot Front Holes Rear Half Of Tub Basket Front Half Of Tub Reassembly Notes Page Water Level Setting Test Points Component TestingDetergent Dispenser Motor & SwitchTo test the door switch To test the door lock main switchesTo test the door lock/unlock solenoids Interference Filter Drain Pump MotorTemperature Results Interlock Switch Diagnostics Diagnostic GuideElectrostatic Discharge ESD Sensitive Electronics Display Explanation and Recommended Procedure FAILURE/ERROR Display CodesLong Drain Motor Control Unit Error Dispenser Circuit Error CCU / Touchpad / LED Assembly Error Sud Diagnostic Test Starting the Test ModeTest Program Control Water Temperature Sensor Motor Continuity TestManually Unlocking Door Lock System To remove Central Control Unit CCU To remove the touchpad/LED assemblyTo reassemble CCU To remove Motor Control Unit MCUProblem Troubleshooting ChartDrum will Incorrect Page Wiring Diagram Page United States Product Specifications Warranty Information Sources