Kenmore 796.4107 31 Series Service Manual
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Kenmore 796.4107 31 Series Service Manual

Kenmore 796.4107 31 Series Service Manual

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WASHING MACHINE
SERVICE MANUAL
CAUTION
READ THIS MANUAL CAREFULLY TO DIAGNOSE
PROBLEMS CORRECTLY BEFORE SERVICING THE UNIT.
MODEL : 796.4107#31#

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Summary of Contents for Kenmore 796.4107 31 Series

  • Page 1 WASHING MACHINE SERVICE MANUAL CAUTION READ THIS MANUAL CAREFULLY TO DIAGNOSE PROBLEMS CORRECTLY BEFORE SERVICING THE UNIT. MODEL : 796.4107#31#...
  • Page 2 JULY.2012 PRINTED IN KOREA P/No.: MFL67307945...

  • Page 3: Table Of Contents

    CONTENTS Specifications ..........................3 Features and Technical Explanation .................... 4-6 Parts Identification ........................... 7 Installation and Test ........................8-10 Operation ..........................11-17 5-1. Control Panel Features ..................... 12-13 5-2. Cycle Guide ........................... 14 5-3. Special Functions ........................15 5-4. Explanation of Each Process .................... 16-17 Wiring Diagram / Program Chart ....................

  • Page 4: Specifications

    1.SPECIFICATIONS ITEM 796.4107#31# COLOR 2 : White, 3 : Stone Silver POWER SUPPLY AC 120 V, 60 Hz PRODUCT WEIGHT 227lb (103kg) WASHING 280 W ELECTRIC POWER DRAIN MOTOR 80 W CONSUMPTION WASH HEATER 1000W REVOLUTION WASH 46 rpm SPEED SPIN 0-1,300 rpm CYCLES...

  • Page 5: Features And Technical Explanation

    2. FEATURES & TECHNICAL EXPLANATION 2-1.FEATURES Ultra Capacity The larger drum enables not just higher head drop and stronger centrifugal force, but also less tangling and wrinkling of the laundry.Heavier loads,such as king size comforters,blankets,and curtains,can be washed. Direct Drive System The advanced brushless DC motor directly drives the drum without belt and pulley.
  • Page 6 2-2. NEURO FUZZY WASHING TIME OPTIMIZATION To get the best washing performance, optimal time is determined by the water temperature, the selected washing temperature, and the size of the load. water temperature washing time the best selected NEURO- washing rinsing time washing FUZZY temperature...
  • Page 7 2-5. THE DOOR CAN NOT BE OPENED While program is operating. When a power failed and power plug is taken out in operation While Door Lock lights turn on. White the motor is in the process of intertial rotating, through the operation is paused. 2-6.

  • Page 8: Parts Identification

    3.PARTS IDENTIFICATION Shipping Bolts Power Plug • If the supply cord is damaged, it must be replaced by the manufacturer or its authorized service technician in order to avoid a hazard. Drain Hose Control Panel Dispenser Back of Washer Drum Cold Water Inlet Door Seal Door...

  • Page 9: Installation And Test

    4. INSTALLATION & TEST Before servicing, ask the customer what the trouble is. When installing or repairing the washer, put on long sleeve gloves and safety glasses. Check the setup (power supply is 120V, remove the transit bolts, level the washer...) Check with the troubleshooting guide.
  • Page 10 HOW TO CONNECT THE INLET HOSE • Check the rubber seals on both sides of the hose. • Connect the water hoses to the faucets. • Turn on the water tap to remove foreign substance such as dirt, sand, or sawdust in the water line, and than check the water temperature.
  • Page 11 TEST OPERATION Preparation for Press the POWER button. Press the washing. START/PAUSE button. • Connect the power plug to • Listen for a click to determine if the outlet. the door has locked. • Connect the inlet hose. " Check the water heating Check the automatic Check the water supply.

  • Page 12: Operation

    5. OPERATION 5-1. CONTROL PANEL FEATURES...

  • Page 14: Cycle Guide

    5-2. CYCLE GUIDE The cycle gulde below shows the default settings, avallable options and recommended fabric types for each cycle. Allowable modifier adjustments are shown below the default setting for each cycle. =Available option 796.4107#31# =Default setting Fabric or Disp. Load Wash Wash...
  • Page 15 5-2. CYCLE GUIDE CYCLE GUIDE The cycle gulde below shows the default settings, avallable options and recommended fabric types for each cycle. Allowable modifier adjustments are shown below the default setting for each cycle. =Available option =Default setting Fabric or Disp.
  • Page 16 5-3. CYCLE OPTIONS To use the Save Energy feature, press and hold the Pre Wash button for five seconds.

  • Page 17: Special Functions

    5-4. SPECIAL FUNCTION To use the Clean Washer feature, press and hold the Accela-Wash button for five seconds. To use the Control Lock feature, press and hold the Stay Fresh button for five seconds. To use the Auto Soak feature, press and hold the Steam Treat button for five seconds. Extra Rinse button for seconds.

  • Page 18: Explanation Of Each Process

    5-5. EXPLANATION OF EACH PROCESS Process Explanation Stay Electrical power is supplied Washer is ready to work and the micom is in the active mode. Water After loading laundry and selecting a course and a cycle, water is Supply supplied and drum rotates. When a user selects Pre-wash course, water is supplied through pre wash valve.
  • Page 19 Intermittent • To reach the correct set speed, the motor rotates clockwise and spin counterclockwise directions after spin process starts. • If the water level frequency is lower than 23.0 kHz, a washer senses suds and starts suds removal process. Rinse •...
  • Page 20 6. TROUBLESHOOTING SUMARTY...

  • Page 22: Test Mode

    7.TEST MODE SPIN SPEED SOIL LEVEL WASH/RINSE DELAY WASH...

  • Page 23: Troubleshooting

    8.TROUBLESHOOTING 8-1. SAFE Y CAU ION here’s built-in AC 120V and DC power in output terminal of PWB assembly in common. Be careful electric shock when disconnecting parts while trouble shooting. (Wear Electro Static Discharge gloves when working.) After cutting off the power when changing PWB assembly, disconnect or assemble. Be careful static when handling PWB assembly, and use Electro Static Discharge plastic pack when delivering or keeping it.
  • Page 24 • The connector (3-pin, male, white) in the MOTOR LOCKED MOTOR HARNESS is not connected to the connector (3-pin, ERROR female, white) of STATOR ASSEMBLY. • The electric contact between the connectors (3-pin, male, white) in the MOTOR HARNESS and 4-pin, female, white connector in the MAIN PWB ASSEMBLY is bad or unstable.

  • Page 25: Troubleshooting With Error

    8-4. TROUBLESHOOTING WITH ERROR INLET VALVE ERROR Is the voltage at the inlet Replace the valve coil 120VAC with the INLET VALVE valve energized? ASSEMBLY. displayed? Check the AIR When you press both CHAMBER Wash Temp button and and the tube DELAY STRAT button (clogged).
  • Page 26 DRAIN ERROR SPIN SPEED SOIL LEVEL, Wash Temp DELAY WASH...
  • Page 27 HEATING ERROR Reconnect or Is the connector connected to repair thermistor disconnected or the connector. disassembled? displayed? Check the connectors at the Reconnect or main PCB, the heater and the repair thermistor. Are the the connector. connectors loose or disconnected? Steam generator thermistor Steam generator heater Wash thermistor...
  • Page 28 - part of motor LOCKED MOTOR ERROR displayed? LE ERROR Reconnect Check the connectors below. Motor the connector. Is the connector disconnected (connector / or disassembled? wire / motor ) (motor hall sensor connector, Replace Is rotor magnet cracked? motor drive connector.) the ROTOR.
  • Page 29 OOR OPEN ERROR Replace gasket s the spring in the door displayed? or hinge. latch hook on the door Remove foreign strong and tight? objects. Reconnect or Check the connectors at the repair main PCB and the door the connector switch.
  • Page 30 UNBALANCE ERROR OVER FLOW ERROR displayed? displayed? Check the AIR Put laundry While a cycle is running, Does the laundry lean CHAMBER evenly press the Wash temp and toward one side, not evenly and the tube In the DRUM DELAY START buttons put in the DRUM assembly? (clogged).
  • Page 31 PRESSURE SENSOR ERROR displayed? PE ERROR Reconnect or Is the connector connected repair to pressure sensor the connector. disconnected or disassembled? Replace the Is the resistance of the pressure pressure sensor out of switch. range? (pin 1~ pin 3) (21~23 Ω ±10%) Fix the air Is the AIR CHAMBER and chamber...

  • Page 32: Troubleshooting Else

    8-5. TROUBLESHOOTING ELSE CAUTION 1. Be careful of electric shock if disconnecting parts while troubleshooting. 2. First of all, check the connection of each electrical terminal with the wiring diagram. 3. If you replace the MAIN PWB ASSEMBLY, reinsert the connectors correctly. NO POWER Replace the Is LED on while the power...
  • Page 33 BUTTON DOESN’T WORK Check the connectors at the Reconnect or main PCB and the line filter. Repair Are the connectors loose or the connector. disconnected? Check the connectors Replace the between the main PCB and main PCB. the display PCB. Are the connectors loose or disconnected? Replace the main PCB.
  • Page 34 IBRATION & NOISE IN SPIN Put an unbalance part (rubber) inside of drum and start QC test mode and run in high spin. emove the Have all the transit bolts ( efer to section 7-2.) transit bolts and base packing been When the machine is and Base removed?
  • Page 35 ETERGENT OES NOT FLOW IN efer to Is water supplied? NO WATE SUPPLY Are receptacles correctly connected to the Check the wiring. terminals of the INLET VALVE ASSEMBLY? Put the detergent in the correct place. Has detergent been put in the correct compartment of the dispenser? Is the detergent caked or hardened? Clean the dispenser.
  • Page 36 IQUID DETERGENT/SOFTENER/B EACH DOES NOT F OW IN efer to Is water supplied? NO WATE SUPPLY Check the wiring on the Are the plugs correctly connected to the terminals of dispenser. the INLET VALVE ASSEMBLY? Put it in the correct Is liquid detergent/softener/bleach put in the correct compartment.

  • Page 37: Component Testing Information

    9.COMPONENT TESTING INFORMATION ARNING When Resistance (Ohm) checking the Component, be sure to turn the power off, and do voltage discharge sufficiently. -1. FILTER ASSEMBLY (LINE FILTER) Circuit diagram Test points Result...

  • Page 38: Door Look Switch Assembly

    9-2. DOOR LOCK SWITCH ASSEMBLY Wiring Circuit in the MAIN PWB / Wiring Diagram diagram MAIN PWB MICOM Relay Relay Common terminal of valve Door switch The door lock switch assembly consists of a heating PTC, a bimetal, Function a protection PTC, and a solenoid. It locks the door during the wash cycle. 1.
  • Page 39 Test points (5) (3) Result Test Points Result Remarks 700-1500 Ω (2) to (4) At 77 °F °C 60-90 Ω (3) to (4) At 77 °F °C (4) to (5) Infinity (2) to (4) 120 Vac Voltage Input...

  • Page 40: Stator Assembly

    9-3. STATOR ASSEMBLY Wiring Circuit in the MAIN PWB / Wiring Diagram diagram MAIN PWB NA1NA MICOM Function The Direct Drive motor can be driven from stopped to maximum speed in infinite steps in either direction. There are 36 poles on the stator; 12 permanent magnets spaced around the rotor. There are no brushes to wear out.
  • Page 41 The hall sensor determines the speed and direction of the motor. It also can read that the load is off balance when the drum speed fluctuates. Test point - Voltage Testing Hall Sensor at Stator Result (Hall Sensor) (2) (4) (1) (3) (5) If measuring voltage from the Main PCB Assembly to the Hall Sensor, use the following steps:...
  • Page 42 7. To measure output signal voltage from the hall sensor, carefully move test leads to terminals 1 to 4, blue and gray. Slowly rotate motor rotor by hand. You should read a pulsing 10 V . If 10 V is measured from 1 to 4, move lead on blue wire to red wire, terminal 2.

  • Page 43: Pump Motor Assembly

    9-4. PUMP MOTOR ASSEMBLY Wiring Circuit in the MAIN PWB Wiring Diagram diagram MAIN PWB 1 2 3 1 2 3 1 2 3 4 1 2 3 3 2 1 MICOM 3 2 1 CONNECTOR Pump Driving circuit DRAIN CIRCULATION PUMP PUMP...

  • Page 44: Inlet Valve Assembly

    9-5. INLET VALVE ASSEMBLY...

  • Page 45: Heater Assembly

    9-6. HEATER ASSEMBLY Wering Circuit in the MAIN PWB Wiring diagram diagram AIN PWB (X71) (X135) (X134) X100 Heater Tab Relay STEA Heater driving circuit WASH GENERATOR HEATER HEATER * Each circuits of loads in wiring diagram are all same. Function 1.

  • Page 46: Thermistor Assembly

    9-7. THERMISTOR ASSEMBLY Circuit in the MAIN PCB / Wiring Diagram...
  • Page 47 Result Wash Thermistor Result Remarks Test Points (tolerance 39.5 k At 86 (1) to (2) 26.1 k At 104 12.1 k At 140 8.5 k At 158 3.8 k At 203 2.8 k At 221...

  • Page 48: Disassembly Instructions

    10. DISASSEMBLY INSTRUCTIONS Be sure to unplug the machine before disassembling and repairing the parts. CONTROL PANEL 1 Unscrew 2 screws on the back of the top plate. TOP PLATE ASSEMBLY 2 Pull the top plate backward and upward as shown.
  • Page 49 MAIN PWB ASSEMBLY Disconnect the POWER connector and the pressure switch assembly. Remove the protective cover. PROTECT COVER Disconnect the connectors. Unscrew 1 screw on the back. Remove the main PWB.
  • Page 50 DISPENSER ASSEMBLY Disassemble the top plate assembly. Pull out the drawer. Push out the DISPENSER ASSEMBLY after unscrewing 2 screws. Unscrew the Clamp nut at the lower part of the dispenser. Disassemble the 4 connectors from the valves. Wire Color Blue Housing (YL-BK) White Housing (BK-WH) Blue Housing (BK-GY)
  • Page 51 CABINET COVER ① Unscrew the 6 screws from upper of the canbinet cover. ② Unscrew the screw from filter cover. ③ Put a flat ( -) screwdriver or putty knife into the hinge slots at the bottom of the cover and pry it out. ④...
  • Page 52 Open the door. Disassemble the clamp assembly. Tilt the cabinet cover. Disconnect the door switch connector. NOTE : When assembling the cabinet cover, connect the door switch connector. Lift and separate the cabinet cover. Disassemble the clamp assembly. Disassemble the gasket.
  • Page 53 DOOR ① Open the door. ② Unscrew the 6 screw from the HINGE COVER. ③ Put a flat ( -) screwdriver into the opening of the hinge, and pull out the hinge cover. DOOR LOCK SWITCH ASSEMBLY ① Open the door and disassemble the CLAMP ASSEMBLY.
  • Page 54 HEATER ① Disassemble the cabinet cover. ② Separate 2 connectors from the heater. ③ Loosen the nut and pull out the heater. ※ ※ CAUTION • When assembling the heater, insert the heater into the heater clip on the bottom of the tub.
  • Page 55 WHEN FOREIGN OBJECT IS STUCK BETWEEN DRUM AND TUB Disassemble the cabinet cover. Separate the heater from the tub. Remove any foreign objects (wire, coin, etc.) by inserting a long bar in the opening. LAMP ASSEMBLY Unscrew 2 screws on the back of the top plate. TOP PLATE ASSEMBLY Pull the top plate backward and upward as shown.
  • Page 56 MOTOR/DAMPER Disassemble the back cover. Rotor Remove the bolt. Pull out the rotor. Bolt Unscrew the 2 screws from the tub bracket. Remove the 6 bolts on the stator. Unplug the 2 connectors from the stator. Disassemble the damper hinges from the tub DAMPER HINGE, and base.

  • Page 57: Exploded View

    11. EXPLODED VIEW 11. EXPLODED VIEW G001 G002 G003 G004 G006 G007 M410 G010 F215 A485 F210 A455 A450 F110 A106 A105 A111 A110 A410 A102 A150 A152 A103 A154 A153 A101 A141 A156 A390 A151 A100 A131 A130 A430 A140 A133 A440...
  • Page 58 K350 K360 K143 K123 K351 K361 K610 F140 K411 K611 K410 K115 K141 K110 K111 K140 K117 F315 K571 K142 F310 F465 K572 K190 F463 K513 F464 K570 K122 K125 K516 K130 K320 K530 K121 K510 F360 K512 K340 K131 K135 K344 F365...
  • Page 59 F323 F322 F462 F321 F300 F180 F170 F160 F227 F226 F327 F340 F329 F225 F430 F220 F441 F120 F130 F432...

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