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8.TROUBLESHOOTING

Содержание 796.4107 31 Series

Страница 1: ...WASHING MACHINE SERVICE MANUAL MODEL 796 4107 31 CAUTION READ THIS MANUAL CAREFULLY TO DIAGNOSE PROBLEMS CORRECTLY BEFORE SERVICING THE UNIT ...

Страница 2: ...JULY 2012 PRINTED IN KOREA P No MFL67307945 ...

Страница 3: ...Troubleshooting 21 35 8 1 Safety Caution 21 8 2 Error Mode Summary 21 22 8 3 Troubleshooting Summary 23 8 4 Troubleshooting With Error 24 30 8 5 Troubleshooting Else 31 35 9 Component Testing Information 36 48 9 1 Filter Assembly Line Filter 36 9 2 Door Look Switch Assembly 37 38 9 3 Stator Assembly 39 41 9 4 Pump Motor Assembly 42 9 5 Inlet Valve Assembly 43 9 6 Heater Assembly 44 9 7 Thermistor ...

Страница 4: ...ASHER MY CYCLE AUTO SOAK SAVE ENERGYK CYCLES WASH RINSE TEMPERATURES SPIN SPEEDS OPERATIONAL WATER PRESSURE CONTROL TYPE WASH CAPACITY cu ft DIMENSIONS DELAY WASH DOOR SWITCH TYPE CHROME DOOR FRAME WATER LEVEL LAUNDRY LOAD SENSING ERROR DIAGNOSIS AUTO POWER OFF STEAM OPTIONS WASHING DRAIN MOTOR WASH HEATER WASH SPIN REVOLUTION SPEED ELECTRIC POWER CONSUMPTION 796 4107 31 To reduce the risk of inju...

Страница 5: ...rushless DC motor directly drives the drum without belt and pulley Tilted Drum and Extra Large Door Opening Tilted drum and extra large opening make it possible to load and unload clothing more easily Automatic Wash Load Detection Automatically detects the load and optimizes the washing time Built in Heater Internal heater helps to maintain water temperature at its optimum level for selected cycle...

Страница 6: ...m then proceeds Spinning does not proceed until the water in the tub drains to a certain level water temperature washing time rinsing time the best washing performance spin rhythm time load size NEURO FUZZY selected washing temperature SENSING EFFECT PROCESSING DETERMINATION The door can be opened by pulling the door handle whenever washer is not in operation When the cycle is completed the DOOR L...

Страница 7: ... completion of water supply For tough stained clothes sick room lines or baby clothes Normal Casual Heavy Duty Whitest Whites Bulky Comforter Kids Wear Rugged Sanitize This option features upgraded washing performance with low energy and water consumption Do not load delicates such as wool silk and easily discolored clothes The drum light comes on when the power button is pressed It goes off when ...

Страница 8: ...for Safety Hot Water Inlet Cold Water Inlet Back of Washer Drum If the supply cord is damaged it must be replaced by the manufacturer or its authorized service technician in order to avoid a hazard ACCESSORIES Wrench Tie strap Option to secure drain hose to standpipe inlet hose or laundry tub Caps 4 for covering shipping bolt holes Hot and Cold Water Hoses Non skid pads ...

Страница 9: ...uctions Service the unit After servicing operate the appliance to see whether it functions correctly Remove the 4 shipping bolts with the supplied wrench Do first lower side to remove easily Keep the shipping bolts and spanner for future use Insert the 4 caps provided into the hole Turn clockwise to raise counterclockwise to lower Turn the leveling feet to adjust the appliance STANDARD INSTALLATIO...

Страница 10: ...heck the water temperature Connect the hoses to the water inlets The end of the drain hose should be placed less than 96 cm from the floor Make sure that the hose is not twisted Connect the power plug to the wall outlet Avoid connecting several electric devices as doing so may cause a fire Avoid submerging the end of the hose HOW TO CONNECT THE INLET HOSE CONNECT THE DRAIN HOSE CONNECT POWER PLUG ...

Страница 11: ...let hose Listen for a click to determine if the door has locked Press the Wash Temp button and the present temperature will be displayed Check if the drum rotates clockwise and counterclockwise Check if water is supplied through the detergent dispenser If SERVICE is needed during check remove the remaining water by pulling out the hose cap Listen for a click to determine if the door is unlocking P...

Страница 12: ...5 OPERATION 13 5 1 CONTROL PANEL FEATURES ...

Страница 13: ...14 ...

Страница 14: ... or option is available with every cycle A chime will sound and the LED will not light if the selection is not allowed The washer automatically adjusts the wash time for amount of laundry water pressure water heating time and other operating conditions These cycles use various wash motions to enhance cleaning and or fabric care performance The wash motions may sound different at different stages o...

Страница 15: ...lable with every cycle A chime will sound and the LED will not light if the selection is not allowed The washer automatically adjusts the wash time for amount of laundry water pressure water heating time and other operating conditions These cycles use various wash motions to enhance cleaning and or fabric care performance The wash motions may sound different at different stages of the wash cycle T...

Страница 16: ...17 To use the Save Energy feature press and hold the Pre Wash button for five seconds 5 3 CYCLE OPTIONS ...

Страница 17: ... press and hold theAccela 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 5 seconds ...

Страница 18: ...to the selected temperature the heating stops and only the drum rotates If water temperature becomes lower than selected because of re supplied water the heating starts again Fuzzy Logic decides washing time according to the laundry load water temperature and other factors A pump motor drains the water from the drum After sensing drained water amount by water level frequency spin starts When a hea...

Страница 19: ...water supply Water supply for rinse process 14 Rinse Rinsing process 15 Last drainage After spin finishes and power is not supplied to motor the drum rotates by remaining spin power If rinse hold is selected the drainage is not proceeded after rinse finishes 16 Disentangling The same as item 9 17 Intermittent spin The same as item A 18 19 20 21 22 Main spin1 The same as item B Main spin2 At the en...

Страница 20: ...6 TROUBLESHOOTING SUMARTY 21 ...

Страница 21: ...22 ...

Страница 22: ...SPIN SPEED SOIL LEVEL WASH RINSE DELAYWASH 7 TEST MODE 23 ...

Страница 23: ... 3 4 0 1 5 55 4 ERROR SYMPTOM CAUSE 01 1 1 01 6 3 7 1 8 1 9 012 79 8 1 0 5 4 1 1 0 5 4 50 6 0 0 0 7 8 TROUBLESHOOTING 24 ...

Страница 24: ...S and 4 pin female white connector in the MAIN PWB ASSEMBLY is bad or unstable The MOTOR HARNESS between the STATOR ASSEMBLY and MAIN PWB ASSEMBLY is cut open circuited The hall sensor is out of order defective 8 EEPROM is out of order Displayed only when the START PAUSE button is first pressed in the Load Test Mode 9 g n i h s a w e l i h w d e p p o t s s i y l p p u s r e w o p e h t r e t f A ...

Страница 25: ... correct connections Refer to 9 5 wiring diagram Is the water level still 246 Is filter inlet valve clogged with foreign material Check the connectors at the main PCB and the water valve Are the connectors loose or disconnected Is the resistance of fill valve coil between 800 and 1200 Refer to 9 5 inlet valve assembly Yes Replace the INLET VALVE ASSEMBLY Replace the MAIN HARNESS Check the pressure...

Страница 26: ...27 DRAIN ERROR Wash Temp DELAY WASH SPIN SPEED SOIL LEVEL ...

Страница 27: ...thoroughly The main PCB should only be replaces as a last resort as it is unlikely to be the cause Check the thermistor resistance Is the resistance correct according to the chart Refer to 9 7 thermistor assembly Are the thermistor terminals dry and free of corrosion Steam generator heater Wash heater Steam generator thermistor Wash thermistor Check the resistance of the heater Is the resistance b...

Страница 28: ...net cracked Hall sensor Motor Drive Hall Sensor part of wire part of motor Motor Yes No Yes Yes Magnet Replace the STATOR Is the resistance values in the range of 5 to 15 Ω U V V W W V U 1 V 2 W 3 After pull out the RD4 connector check the terminal of the connector in wire Red 3P male No Replace the Hall sensor Is hall sensor out of order Refer to 9 3 Stator assembly Hall sensor Yes No Replace the...

Страница 29: ...Y Replace gasket or hinge Remove foreign objects No No If tested off the stator using the diagram above ohm check the resistors from pin 5 to pin 1 pin 2 Does either test show an open infinity the hall sensor You should measure approximately 10 000 ohms from pin 5 to pin 1 and 10 000 ohms from pin 5 to pin Replace the DOOR SWITCH ASSEMBLY No Yes Yes Is the door closing properly Is the gasket damag...

Страница 30: ...not evenly put in the DRUM assembly Is the washing machine installed at an angle Note Environmental check list 1 Removal of transportation based fixed bolt 2 Confirmation on the material to see if it is capable of handling two different types of blanket materials If the water valve is energized as soon as the washer is plugged in or when the power button is pressed replace the main PCB Check the A...

Страница 31: ... Reconnect or repair the connector No No Yes Is the resistance of the pressure sensor out of range pin 1 pin 3 21 23 Ω 10 Replace the pressure switch No Yes Is the AIR CHAMBER and the tube clogged Replace the MAIN PWB assembly Fix the air chamber and remove the foreign material Yes Is PE ERROR displayed ...

Страница 32: ...e circuit breaker Yes No Is the current rating of multi outlet power strip enough Avoid connecting several electric devices Is the supplied voltage 120V AC 10 15 Alternate with explanation Yes Yes No Is the connector connected to PCB Noise filter disconnected or disassembled Reconnect or repair the connector No Replace the MAIN PWB ASSEMBLY Yes No Is LED on while the power is on Replace the DISPLA...

Страница 33: ...t the main PCB and the line filter Are the connectors loose or disconnected Check the connectors between the main PCB and the display PCB Are the connectors loose or disconnected Reconnect or Repair the connector Replace the main PCB Replace the main PCB 34 ...

Страница 34: ... 0 1 2 3 3 4 35 ...

Страница 35: ... dispenser Put the detergent in the correct place Is water supplied Is the detergent caked or hardened Are receptacles correctly connected to the terminals of the INLET VALVE ASSEMBLY Has detergent been put in the correct compartment of the dispenser 36 ...

Страница 36: ...stator Replace if necessary Check rotor for broken magnets Replace rotor if necessary Is water supplied Are the plugs correctly connected to the terminals of the INLET VALVEASSEMBLY Is liquid detergent softener bleach put in the correct compartment of the drawer Is the liquid detergent softener bleach cap clogged Is the motor bolt loosened Is there friction noise coming from the motor 37 ...

Страница 37: ... 9 COMPONENT TESTING INFORMATION 38 ...

Страница 38: ...ough terminal 3 4 PTC solenoid will make the door locked Door lock is detected when switches in terminal 4 5 are set closed CAM rotation will forcibly clear off the connection The maximum allowable number of impulse authorizations is 2 Upon the third authorization of the impulse the position of CAM goes back to the door open position Authorizing the impulse occurs in 4 5 seconds upon input for max...

Страница 39: ...40 Test points Result Test Points 2 to 4 3 to 4 4 to 5 2 to 4 Result 700 1500 Ω 60 90 Ω Infinity 120 Vac Remarks At 77 F 25 C At 77 F 25 C Voltage Input 5 3 2 4 ...

Страница 40: ...3 4 1 2 3 4 Hb Function Test points Windings Result Windings 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 Unlike a more traditional brushless motor the rotor surrounds the stator rather than being attached to it Test Points Resul...

Страница 41: ...o the Hall Sensor use the following steps 1 Unplug power cord 2 Remove rear washer panel 3 Locate Hall sensor connector on the stator behind the rotor 4 Place meter leads on terminals 5 to 4 white to gray 5 Plug in power cord close door and press power button DO NOT PRESS START 6 You should measure 10 to 15 VDC If 10 to 15 VDC is present control board white wire and gray wire are OK If not follow ...

Страница 42: ... but does not pulse or change Hall sensor has failed and must be replaced IF zero 0 voltage is measured on either test check red blue wires for continuity Repair or replace harness as needed Voltage Testing Hall Sensor from the Main PCB Assembly 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 ...

Страница 43: ... 4 1 2 3 4 BL3 SB SB SB BK BN BN DRAIN PUMP CIRCULATION PUMP BK Object Function Test points Result Each circuits of loads in wiring diagram are all same Two pump motors are used to drain the tub and to circulate the water detergent solution Drain Pump Drain Pump Circulation Pump Circulation Pump Test Points Result 1 to 2 10 20 Ω Test Points Result 1 to 2 18 30 Ω T P For Drain For Circulation 1 2 2...

Страница 44: ...45 9 5 INLET VALVE ASSEMBLY ...

Страница 45: ...election during certain wash cycles 2 The steam generator heater is designed to make the water to the steam during steam cycles Result Test points Function Wering diagram Each circuits of loads in wiring diagram are all same Wash Heater Wiring diagram Circuit in the MAIN PWB Test Points 1 to 2 12 18 Result ...

Страница 46: ...47 9 7 THERMISTOR ASSEMBLY Circuit in the MAIN PCB Wiring Diagram ...

Страница 47: ...48 Result Wash Thermistor Test Points 1 to 2 Result tolerance 5 Remarks At 86 30 At 104 30 At 140 30 At 158 30 At 203 30 At 221 30 39 5 k 26 1 k 12 1 k 8 5 k 3 8 k 2 8 k ...

Страница 48: ...sconnect the Display PWB assembly connector from the cabling 4 Pull out the drawer and unscrew 2 screws 5 Remove one screw 6 Lift the side the control panel assembly and pull it out 7 Unscrew the 8 screws from the control panel assembly 8 Disassemble the display PWB assembly TOP PLATE ASSEMBLY CONTROL PANEL ASSEMBLY DRAWER CONTROL PANEL ASSEMBLY DISPLAY PWB ASSEMBLY 10 DISASSEMBLY INSTRUCTIONS ...

Страница 49: ...AIN PWB ASSEMBLY Disconnect the POWER connector and the pressure switch assembly Remove the protective cover Unscrew 1 screw on the back Remove the main PWB Disconnect the connectors PROTECT COVER 1 2 3 4 5 ...

Страница 50: ...2 screws Disassemble two or three connectors from the NOISE FILTER Unscrew a screw from the TOP BRACKET Unscrew the Clamp nut at the lower part of the dispenser Disassemble the 4 connectors from the valves Unscrew 2 screws from the back of the cabinet Wire Color Blue Housing YL BK White Housing BK WH Blue Housing BK GY Red Housing BK Blue ...

Страница 51: ...er of the canbinet cover Unscrew the screw from filter cover Put a flat screwdriver or putty knife into the hinge slots at the bottom of the cover and pry it out Unscrew the screw from the lower side of the cabinet cover CABINET COVER ...

Страница 52: ...mbly Tilt the cabinet cover Disconnect the door switch connector Disassemble the clamp assembly Disassemble the gasket Lift and separate the cabinet cover આ NOTE When assembling the cabinet cover connect the door switch connector 5 6 7 8 9 10 11 ...

Страница 53: ...e cabinet cover Separate the pump hose the bellows and thecirculation hose assembly from the pump assembly Disassemble the pump assembly in arrow direction DOOR DOOR LOCK SWITCH ASSEMBLY PUMP Put a flat screwdriver into the opening of the hinge and pull out the hinge cover NOTE Reconnect the connector after replacing the DOOR SWITCH ASSEMBLY ...

Страница 54: ... heater HEATER THERMISTOR Disassemble the cabinet cover Unplug the white connector from the thermistor Pull it out by holding the bracket of the thermistor CAUTION When assembling the heater insert the heater into the heater clip on the bottom of the tub Tighten the fastening nut so the heater is secure ...

Страница 55: ... 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 Pull the top plate backward and upward as shown TOP PLATE ASSEMBLY 1 2 3 1 Disconnect the connector 3 Disassemble the lamp assembly 4 2 ...

Страница 56: ...them they can be re used Bolt Rotor DAMPER HINGE DAMPER Disassemble the back cover Remove the bolt Pull out the rotor 1 2 3 Unscrew the 2 screws from the tub bracket Remove the 6 bolts on the stator Unplug the 2 connectors from the stator 1 2 3 Disassemble the damper hinges from the tub and base 1 ...

Страница 57: ...ED VIEW 58 G001 G002 G003 G004 G006 G007 G010 F215 M410 A485 A455 A410 A152 A150 A450 A110 A111 F210 A102 A103 A106 A105 A101 A100 A430 A440 A155 A201 A220 A153 A154 A141 A390 A131 A151 A140 A133 A300 A200 A303 A310 A156 A130 F110 ...

Страница 58: ...71 K142 K572 K570 K320 K510 K513 K530 K130 K512 K340 K346 K349 K342 K344 K131 K135 K345 K347 K348 F145 K520 F461 K540 K550 K105 K121 K125 K122 K190 K516 F464 F463 F310 F465 F315 K117 K350 K360 K143 K123 K141 K115 K611 K610 F360 F468 K361 F365 ...

Страница 59: ...60 F300 F227 F226 F220 F432 F130 F120 F441 F430 F225 F329 F340 F327 F160 F170 F180 F321 F462 F323 F322 ...

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