CONSUMER SERVICES TECHNICAL EDUCATION GROUP PRESENTS L-66 ELECTRONIC THREE-SPEED AUTOMATIC WASHERS with CATALYST CLEANING ACTION™ JOB AID Part No.
INTRODUCXTION This Job Aid, “ELECTRONIC THREE-SPEED AUTOMATIC WASHERS with CATALYST CLEANING ACTION™,” (Part No. 4322673), has been compiled to provide the most recent information on design, features, troubleshooting, service and repair procedures. For additional information on the basic washer components, refer to Job Aid #787930. For additional information on AccuWash, Automatic Temperature Control, refer to Job Aid #4322334.
TABLE OF CONTENTS SAFETY ............................................ III SECTION ONE FEATURES ............................................ 1 SECTION TWO THEORY OF OPERATION ................................. 7 SECTION THREE COMPONENT ACCESS COMPONENT LOCATION ............................................................... 15 ACCESSING CRITICAL COMPONENTS ........................................ 16 SECTION FOUR COMPONENT TESTING & DIAGNOSIS SERVICE DIAGNOSTIC TESTS ...........................................
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Section One FEATURES Catalyst Cleaning™ CATALYST CLEANING™ allows detergent to soak and penetrate the entire load giving improved stain and soil removal. CATALYST CLEANING™ uses laundry detergent in a unique way. Water flushes the detergent from the dispenser to dissolve the detergent. Then the concentrated detergent mixture is sprayed on to the load while the washer spins at low speed. CATALYST CLEANING™ will last one to five minutes, depending on the cycle selected.
QUIET PAK™ The QUIET PAK™ System is designed to reduce water sounds and mechanical noises. The cabinet and base are insulated with sound-dampening materials over which an additional tub wrap is added for superior vibration and sound-dampening characteristics. RING GUARD SOUND ABSORBING TUB WRAP BLEACH VENTURI The bleach venturi causes a siphoning action to draw bleach from the bleach dispenser.
PRESSURE TRANSDUCER TRANSDUCER HARNESS PLUGS The water level transducer is located at the left end of the console area and is used to regulate the level of wash and rinse water in the tub. The electronic pressure transducer converts air pressure created in the pressure dome to a low voltage square wave signal. The microcomputer on the control board reads the signal directly. The microcomputer then translates the frequency into inches of water.
BALANCE RING Balance Ring shown upside-down The Balance Ring is a special dual chambered ring with the traditional water ballast in the top chamber and an oil charge with steel balls in the lower chamber. The additional ballast is required to counteract the clothing load during the Catalyst Cleaning mode. The ring is attached to the spin basket and is not available as a separate component.
DISPENSERS Bleach Dispenser Fabric Softener Dispenser Clothing Diverter Splash Shield Detergent Dispenser Bleach, Detergent and Fabric Softener dispensers are provided to allow the consumer to load the laundry additives with the clothing load. The dispensers allow the additives to be introduced to the laundry load at the proper time in the cycle. A diverter is molded into the tub ring to push the dry clothing into the basket during the Catalyst Cleaning portion of the cycle.
INLET AND DISPENSER VALVE ASSEMBLY Bleach Dispenser Outlet Valve (with Back-Flow Restrictor) Fabric Softener Dispenser Outlet Valve Detergent Dispenser Outlet Valve Fresh Water Outlet Valve (with Back-Flow Restrictor and Thermistor) Cold Water Inlet Valve Hot Water Inlet Valve A new inlet valve assembly is used on this model. It is made up of the hot and cold inlet valves and the dispenser valves that operate the dispensers as well as the fresh water fill.
Section Two THEORY OF OPERATION CONTROL PANEL Fig. 2-1 OPERATING THE CLOTHES WASHER Choosing Cycles Use the SELECT CYCLE keypads to choose the wash cycle for the type of fabrics being washed. Fig. 2-2 GENERAL INFORMATION The Electronic Control allows the consumer to add or subtract agitation time in all cycles. • • • For most loads, use the time recommended in the preset settings. For heavy soil and sturdy fabrics, more time can be used. For light soil and delicate fabrics, less time can be used.
WHITEST WHITES Detergent and bleach are dispensed at the proper time for the best possible performance. This cycle introduces liquid chlorine bleach sooner to the load than the other cycles for improved whitening of heavily soiled white fabrics. The default motor speeds for agitation and spin are both high speed. The preset wash time for this cycle is 10 minutes. NORMAL This cycle provides between 4 and 18 minutes of wash time for normally soiled cottons and linens.
Choosing Options Use the OPTIONS control to select the desired options for the wash cycle. CATALYST CLEANING™ CATALYST CLEANING™ allows detergent to soak and penetrate the entire load giving improved stain and soil removal. This option will last one (1) to five (5) minutes depending on the cycle selected. The washer then stops spinning and fills to the selected water level and continues washing with the selected cycle.
WATER LEVEL Up to five (5) different water levels can be selected ranging from SMALL LOAD to LARGE LOAD. In most cycles, reducing the water level will result in the motor operating at a slower agitation speed. See chart on page 9. WASH/RINSE TEMP CONTROL This allows the selection of four (4) different wash and rinse water temperature combinations based on the type of load being washed.
Operating Controls Press the START keypad to start the washer after a cycle has been selected. Press the PAUSE/CANCEL keypad to pause or stop the washer at any time. Press the START keypad to complete the cycle from where it was stopped. Press the PAUSE/CANCEL keypad twice to turn the washer off.
OPERATIONAL CYCLES P. PRESS/CASUAL EXTRA DELICATE HAND WASH QUICK WASH WHITEST WHITES SOAK D D S S S D D D S S S S S S S S S S S D S S S S S S S S S S S S D S D S S S S S S S S S S S S S S S D S S S D S D S D S D S S D S S S S D S D S S S S D S S S S More Normal D S S D S D S D S D S D S D S D Less S S S S S S S S S S S S S SOAK 12 min. only S S CATALYST CLEAN AUTO TEMP. D D S D S D S D on on D D D D S D RINSE OPT.
AGITATE SPEEDS CYCLES HEAVY DUTY NORMAL (see notes) PERM PRESS/CASUAL EXTRA DELICATE QUICK WASH HAND WASH WHITEST WHITES SOAK RINSE/SPIN SPIN ONLY WATER LEVELS SUPER + Hi 4 Hi, Med / 1 Hi, Med Med Low Med Intermit Hi Med Med NA 4 Hi 4 Hi, Med / 1 Hi, Med Med Low Med Intermit Hi Med Med NA MEDIUM Hi Med 2 Med Low SMALL Med Low Med Low Med Intermit Hi Med Med NA Low Low Low Intermit Med Med Med NA Low Low Low Intermit Med Med Med NA NOTES: • • • • Speeds are dependent on water level and cycle selec
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Section Three COMPONENT ACCESS COMPONENT LOCATION ELECTRONIC CONTROL BOARD WATER LEVEL TRANSDUCER RECIRCULATION PRESSURE SWITCH OUTLET VALVES RECIRCULATION PRESSURE DOME INLET VALVES OUT-OF-BALANCE SWITCH DIVERTER VALVE Fig.
ACCESSING COMPONENTS IN THE CONSOLE 1. Disconnect the power supply to the washer. 2. Remove the two (2) Phillips Head screws securing the lower left and right rear corners of the console to the washer top. (Fig. 2) 3. Fig. 2 Tilt the console back on the hinges that secure the top of the console to the washer back. All components in the console are now accessible for service.
3. To remove the Electronic Control Board from the control bracket, squeeze the sides of both mounting clips and pull up on the entire assembly. (Fig. 4) DEPRESS Fig.
ACCESSING COMPONENTS IN THE WASHER CABINET Components inside the washer cabinet can be accessed by completely removing the outer cabinet as one unit. Refer to Figure 5 for the following instructions. Fig. 5 1. Remove the console mounting screws and tilt the console into the service position. 2. Unplug the lid switch harness connector from the receptacle in the washer top. INSET 1 CLIP 3.
NOTE:If the washer must be operated with the cabinet removed, the dispenser hoses previously disconnected must be held into the basket to avoid water spray. Install a jumper wire (Part No. 285784) in the lid switch harness connector as shown. IMPORTANT: Use extreme caution when operating the washer with the cabinet removed as electri cal shock may occur.
Removing the Bleach and Fabric Softener Dispenser Assembly 1. Disconnect the two (2) inlet hoses from the bleach and fabric softener dispenser assembly. 2. Disengage the tabs around the perimeter of the assembly from the washer top and remove the assembly from the topside of the washer top. Removing the Detergent Dispenser 1. Disconnect the inlet hose from the detergent dispenser cup. 2.
BLEACH DISPENSER OUTLET VALVE (with Back-Flow Restrictor) FABRIC SOFTENER DISPENSER OUTLET VALVE DETERGENT DISPENSER OUTLET VALVE FRESH WATER OUTLET VALVE (with Back-Flow Restrictor and Thermistor) COLD WATER INLET VALVE HOT WATER INLET VALVE Fig. 10 1. Shut off the water supply and disconnect the hot and cold inlet hoses. 2. Remove the two (2) hex-head screws securing the valve assembly to the feature panel. (Fig. 11) The assembly will remain in place until it is lifted slightly. 3.
Removing the Out-of-Balance Switch The Out-of-Balance Switch is located on the inside surface of the feature panel. 1. Reach into the bottom of the plastic protective cover of the Out-of-Balance Switch and disconnect the wiring harness plug from the switch terminals. 2. Remove the hex-head screw on the outside surface of the feature panel. (Fig. 12) 3. Slide the Out-of-Balance Switch so the tabs of the mounting bracket disengage from the key slots as show in Figure 12 and remove the switch assembly.
RECIRCULATION PRESSURE SWITCH RECIRCULATION SPRAY TUB INLET RECIRCULATION HOSE RECIRCULATION PRESSURE DOME FROM PUMP DIVERTER VALVE Fig. 17 NOTE: The Diverter Valve is equipped with a plastic protective cover. If the diverter valve is serviced or replaced the protective cover MUST be reinstalled.
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Section Four COMPONENT TESTING AND DIAGNOSIS SERVICE DIAGNOSTIC TESTS The control must be in the OFF state before pressing the keys to initiate the diagnostic tests. To start the test routine, press the following key pads in this sequence: WASH/RINSE > ACCUWASH > WASH/RINSE > ACCUWASH within five (5) seconds. The LED will display DT The required diagnostic test(s) can now be activated. Any diagnostic test can be stopped by pressing the STOP/CANCEL keypad.
SERVICE DIAGNOSTIC TESTS COMPONENT Pressure Transducer/ Agitate Test Neutral Drain /Spin Test KEY PAD DISPLAY CONTROL ACTION NORMAL ER Hot, cold and fresh water valves are on until a low water level is reached, and the small load water level LED comes on. T3 Agitation occurs at high speed. The small load LED is on. repeat T3 Agitation occurs at med. speed. The small load LED is on. repeat T3 Agitation occurs at low speed. The small load LED is on.
ERROR CODES DISPLAY FF (Fill Failure) EXPLANATION If the transducer signals a high or a low water level for more than 16 seconds the washer will shut off and FF will flash. • Press the RINSE OPTIONS button and select DRAIN/SPIN to drain washer. • Check the water level transducer hose and wire connections. • Also check the pressure dome hose to be sure they are properly connected. • Check the water level transducer, see TEST #7.
TROUBLESHOOTING TEST PROCEDURES Test #1 - 120 VAC Electrical Supply Check for 110-125 VAC to the control board. 1. With the washer off but connected to the AC outlet, measure the AC voltage between Pins 2 and 1 at connector P5. 2. If 110-125 VAC is present, continue with the remaining Troubleshooting Tests as needed. If voltage is not present, check circuit breaker or fuse box, power cord connection at outlet and washer.
2. If the resistance is outside of range, replace the valve assembly. Test #3 - Off-Balance Solenoid Switch Test 1. Unplug the washer and disconnect connectors P5 and P6 from the control board before checking the resistance. Make the checks at contacts shown. NOTE: Off balance arm must be depressed to read solenoid resistance. Move basket to rear of unit to actuate arm. SOLENOID Off Balance Coil RESISTANCE MEASURE BETWEEN 1200Ω Lid Sw Harness P5 contact 3 GY/WH GY Test #4.
Test #5 - Console Touch Switches and Indicator Test Refer to the Service Diagnostic Tests and run the Console Switches and Indicator Test routine. Start the test by pressing the Start button. 1. No LEDs light up a) Visually check that connectors P3 and P4 are inserted all the way into the control board. b) If these connections are good, remove P3 and P4 from the control board while the power is still on.
4. Beeps are NOT heard TOUCHPAD + LEAD - LEAD If beeps are not heard but associated LED(s) turn on and off, it is possible that the beeper circuit has failed or that the control board has failed.
Test #6 - Automatic Temperature Control (ATC) Test This test checks the water inlet relays, the temperature sensor, and the control board. A: Test the fill valves 1. Check that the hot and cold water valves are working. Use the procedure in Test #2. Note: This test MUST be done with the Automatic Temperature Control off. 2. If working properly, go to B. THERMISTOR RESISTANCE CHART Temperature Resistance Degrees (F) (Ohms) 40 126k - 135k 50 97k - 102k B: Test the temperature sensor 1.
Test #7 - Water Level Transducer Test The FF diagnostic code is displayed on console or, the customer complains of unexpected water levels. Customer complains of unexpected water levels. A. Verify the complaint with the following procedure by checking for proper water level fills.
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Section Five TECH TIPS WIRING DIAGRAM WARRANTY INFORMATION 1 year Parts and Labor - entire unit 2-5 yr. Parts only - Gearcase assembly Top and Lid rust Electronic Controls-includes Keyswitch 2-10yr Parts only - Outer tub Lifetime Parts only- White porcelain spin basket for chipping or rust.
MODEL/SERIAL NUMBER PLATE LOCATOR The Model/Serial Number Plate is located at the back of the opening of the washer top underneath the lid.
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PRODUCT SPECIFICATIONS AND WARRANTY INFORMATION SOURCES IN THE UNITED STATES: FOR PRODUCT SPECIFICATIONS AND WARRANTY INFORMATION CALL: FOR WHIRLPOOL PRODUCTS: 1-800-253-1301 FOR KITCHENAID PRODUCTS: 1-800-422-1230 FOR ROPER PRODUCTS: 1-800-447-6737 FOR TECHNICAL ASSISTANCE WHILE AT THE CUSTOMER’S HOME CALL: THE TECHNICAL ASSISTANCE LINE: 1-800-253-2870 HAVE YOUR STORE NUMBER READY TO IDENTIFY YOU AS AN AUTHORIZED SERVICER FOR LITERATURE ORDERS: PHONE #: 1-800-851-4605 __________________________________
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