LG WM2688H Series Service Manual Download

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CONTENTS

1. SPECIFICATIONS .........................................................................................................................3

2. FEATURES & TECHNICAL EXPLANATION ................................................................................ 4

3. PARTS IDENTIFICATION ............................................................................................................ 7

4. INSTALLATION & TEST ............................................................................................................... 8

5. OPERATION ................................................................................................................................11

6. WIRING DIAGRAM/PROGRAM CHART .....................................................................................14

7. TROUBLESHOOTING.................................................................................................................15

7-1. BEFORE PERFORMING SERVICE ...................................................................................15

7-2. QC TEST MODE.................................................................................................................15

7-3. HOW TO CHECK THE WATER LEVEL FREQUENCY ......................................................15

7-4. ERROR DISPLAY ...............................................................................................................16

8. ERROR DIAGNOSIS AND CHECK LIST ....................................................................................18

8-1. DIAGNOSIS AND SOLUTION FOR ABNORMAL OPERATION ........................................18

8-2. FAULT DIAGNOSIS AND TROUBLESHOOTING ..............................................................21

9. DISASSEMBLY INSTRUCTIONS ...............................................................................................29

10. EXPLODED VIEW .....................................................................................................................40

10-1. CABINET & CONTROL PANEL ASSEMBLY ....................................................................40

10-2. DRUM & TUB ASSEMBLY................................................................................................41

10-3. DISPENSER ASSEMBLY .................................................................................................42

Summary of Contents for WM2688H Series

Page 1: ...ING MACHINE SERVICE MANUAL READ THIS MANUAL CAREFULLY TO DIAGNOSE PROBLEMS CORRECTLY BEFORE SERVICING THE UNIT MODEL WM2688H M CAUTION Website http www LGEservice com E mail http www LGEservice com techsup html ...

Page 2: ...101 DEC 2005 PRINTED IN KOREA P No 3828ER3048Q ...

Page 3: ...EFORE PERFORMING SERVICE 15 7 2 QC TEST MODE 15 7 3 HOW TO CHECK THE WATER LEVEL FREQUENCY 15 7 4 ERROR DISPLAY 16 8 ERROR DIAGNOSIS AND CHECK LIST 18 8 1 DIAGNOSIS AND SOLUTION FOR ABNORMAL OPERATION 18 8 2 FAULT DIAGNOSIS AND TROUBLESHOOTING 21 9 DISASSEMBLY INSTRUCTIONS 29 10 EXPLODED VIEW 40 10 1 CABINET CONTROL PANEL ASSEMBLY 40 10 2 DRUM TUB ASSEMBLY 41 10 3 DISPENSER ASSEMBLY 42 ...

Page 4: ... Stain Cycle WATER CIRCULATION Incorporated OPERATIONAL WATER PRESSURE 14 5 116 psi 100 800 kPa CONTROL TYPE Electronic WASH CAPACITY cu ft 3 47 4 0 IEC DIMENSIONS 27 W X 29 3 4 D X 3811 16 H 5013 16 D door open DELAY WASH up to 19 hours DOOR SWITCH TYPE PTC Solenoid WATER LEVEL 10 steps by sensor LAUNDRY LOAD SENSING Incorporated ERROR DIAGNOSIS Incorporated AUTO POWER OFF Incorporated CHILD LOCK...

Page 5: ... and water consumption SteamFreshTM cycle removes wrinkles from dry clothes RollerJets Washing ball enhances the wash performance and reduces damage to the clothing The jets spray and help tumble clothes to enhance washing performance while maintaining fabric care Automatic Wash Load Detection Automatically detects the load and optimizes the washing time Built in Heater Internal heater helps to ma...

Page 6: ...m then proceeds Spinning does not proceed until the water in the tub drains to a certain level 2 4 DOOR CONTROL The door can be opened by pulling the door handle whenever washer is not in operation When the cycle is completed the DOOR LOCKED light will turn off If a power failure has occurred while in operation the door will unlock after 5 minutes Clicking sounds can be heard when the door is lock...

Page 7: ... washer while it is operating 2 8 WATER CIRCULATION When Washing and Rinsing function of shower at the upper part of Gasket When Washing it continuously operates for 3 minutes and intermittently When Rinsing it continuously operates after completion of water supply 2 9 STEAM For tough stained clothes underwear or baby clothes Steam Wash is available with Sanitary Bulk Large Perm Press Cotton Norma...

Page 8: ...7 3 PARTS IDENTIFICATION ACCESSORIES Steam Nozzle Drum Light Door Seal HIGH WASHING HIGH HOT COLD STEAM DOOR LOCK EST TIME REMANING 5 NORMAL CHILD LOCK DELAY WASH 1 21 Safety Cover PLC Modem ...

Page 9: ... whether it functions correctly STANDARD INSTALLATION The appliance should be installed as follows REMOVE THE SHIPPING INSTALL THE APPLIANCE ADJUST THE BOLTS ON A FLAT AND FIRM SURFACE LEVELING Remove the 4 shipping bolts Turn the leveling feet to adjust with the supplied wrench the appliance Do first lower side to remove easily Keep the shipping bolts and spanner for future use Insert the 4 caps ...

Page 10: ...rely to prevent leaks CONNECT THE DRAIN HOSE CONNECT POWER PLUG The end of the drain hose should be placed less than 96 from the floor Connect the power plug to the wall outlet Avoid connecting several electric devices as doing so may cause a fire Make sure that the hose is not twisted Avoid submerging the end of the hose ...

Page 11: ...Check the spin and drain functions Listen for a click to determine if the door is unlocking Listen for a click to determine if the door has locked If SVC is needed during check remove the remaining water by pulling out the hose cap Preparation for Press the POWER button Press the Start Pause washing button Press the WASH RINSE button Check if the drum rotates Check if water is supplied and the pre...

Page 12: ...11 5 OPERATION WM2688H M ...

Page 13: ...Cycle selector knob to select the cycle designed for different types of fabric and soil levels Use this button to Start Stop the washer It shows elapsed time of the cycle the washer is operating Power Button Status Indicator Start Pause Cycle Selector Knob ...

Page 14: ...Automatically provides a rinse WATER PLUS Add extra water to the wash and rinse cycles for superior results Select a water temperature based on the type of load you are washing To change the spin speed press the Spin Speed button repeatedly to cycle through available options To change the soil level press the Soil Level button repeatedly until the desired setting is on Press repeatedly to adjust t...

Page 15: ...4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 5 6 1 2 3 1 2 3 1 2 3 1 2 3 10 11 6 7 8 9 2 3 4 5 1 2 1 3 2 1 3 NA NA NA NA BL NA 10 1112 13 6 7 8 9 2 3 4 5 1 10 1112 13 6 7 8 9 2 3 4 5 1 10 1112 13 6 7 8 9 2 3 4 5 1 10 6 7 8 9 2 3 4 5 1 10 6 7 8 9 2 3 4 5 1 2 3 1 2 3 1 1 2 3 4 1 2 3 4 3 2 1 3 2 1 1 2 3 1 2 3 4 4 MOTOR LAMP PRESSURE SENSOR THERMISTOR POWER CORD HOUSING 3 2 3 2 1 1 1 2 1 GND L S 2 1 1 1 2 1 U V ...

Page 16: ...heck Point Display Status None Turns on all lamps and locks the door 1 time Tumble clockwise rpm 42 50 2 times Low speed Spin rpm 55 65 3 times High speed Spin rpm 125 135 4 times Inlet valve for prewash turns on Water level frequency 25 65 5 times Inlet valve for main wash turns on Water level frequency 25 65 6 times Inlet valve for hot water turns on Water level frequency 25 65 7 times Inlet val...

Page 17: ...nutes after water is supplied or it does not reach the preset water level within 25 minutes The load is too small The appliance is tilted Laundry is gathered to one side Non distributable things are put into the drum 1 2 IMBALANCE ERROR Not fully drained within 10 minutes 3 DRAIN ERROR Water is overflowing water level frequency is over 213 If is displayed the drain pump will operate to drain the w...

Page 18: ...OR HARNESS 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 LOCKED MOTOR ERROR The washer experienced a power failure 11 POWER FAILURE EEPROM is out of order Displayed only when the START PAUSE button is first pressed in the QC Test Mode ...

Page 19: ... YES YES NO NO YES NO NO Is the power plug connected firmly to 120 V AC outlet Power failure or Breaker opened Is the outlet controlled by a switch Visit to service Is displayed Is the tap opened Is the tap frozen Is the water supply shut off Is filter in the inlet valve clogged with foreign material Visit to service Clean the filter of inlet valve ...

Page 20: ...19 SYMPTOM GUIDE FOR SERVICE CALL Door error Drain trouble Was the load too large Visit to service Visit to service ...

Page 21: ...educe the amount of detergent Is liquid laundry product put in the correct compartment of the dispenser Is the cap clogged Explain proper use of liquid laundry products Clean the compartment Visit to service This appliance has an automatic suds sensing function which prevents overflow When excessive suds are sensed the suds removing implementations such as drain water input pause will operate with...

Page 22: ...B ASSEMBLY or repair wire Check the fuse or reset the circuit breaker Replace the FILTER ASSEMBLY CIRC Replace MAIN PWB ASSEMBLY Reconnect Replace the MAIN PWB ASSEMBLY NO POWER 8 2 FAULT DIAGNOSIS AND TROUBLESHOOTING 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 t...

Page 23: ...Put an unbalance part rubber inside of drum and start QC test mode and run in high spin Refer to section 7 2 When the machine is spinning in high speed verify that it is stable VIBRATION NOISE IN SPIN If it is not stable adjust feet accordingly After the washer is level tighten the lock nuts up against of the base of the washer All lock nuts must be tightened If you do not have the unbalance part ...

Page 24: ...ltage of the inlet valve connector is 120 V AC Refer to 7 2 QC TEST MODE Is water supplied Are receptacles correctly connected to the terminals of the INLET VALVE ASSEMBLY Has detergent been put in the correct compartment of the dispenser Is the detergent caked or hardened Open the tap Check the AIR CHAMBER and the tube clogged Clean the filter Replace the INLET VALVE ASSEMBLY Check electrical con...

Page 25: ...e wiring on the dispenser Put it in the correct compartment Clean the Cap and Container Is the motor bolt loosened Is there friction noise coming from the motor Is water supplied Are the plugs correctly connected to the terminals of the INLET VALVE ASSEMBLY Is liquid detergent softener bleach put in the correct compartment of the drawer Is the liquid detergent softener bleach cap clogged ...

Page 26: ...ency 255 When pressing WASH RINSE and SOIL LEVEL buttons at the same time while washing is the water level frequency between 230 243 Check the voltage between two pins while pressing the POWER button Is the voltage 120 V AC Is the drain hose twisted or frozen Is the impeller of the drain pump clogged Is the connector disconnected disassembled Is the coil of the drain pump too high or low resistanc...

Page 27: ...BK BK WH SB SB SB BL YL BL BL YL WH WH WH WH WH SB RD RD BL RD YL BK BK WH SB Push the THERMISTOR tightly to the rubber Replace the Heater Assembly When checking the THERMISTOR on the tub is the THERMISTOR loose Water Temperature C HEATING CONTINUOUSLY ABOVE THE SETTING WATER TEMPERATURE WASH HEATER TROUBLE ...

Page 28: ...connector disconnected disassembled Is the coil of the right side of drain pump open or short circuited Coil R is 18 30 Ω When checking voltage between the connectors during spin is the voltage 120 V AC as the figure Remove foreign material Remove foreign material Reconnect or repair the connector Replace PUMP MOTOR ASSEMBLY Replace the MAIN PWB ASSEMBLY ...

Page 29: ...ess the START PAUSE button 2 times in QC Test mode is the drum spinning at low speed Is it disconnected or disassembled Red 3pin 1 NA 4pin 2 Check the motor connector Is the resistance of the terminal the same as the figure MOTOR TERMINAL Resistance of terminal About 5 Ω 15 Ω Replace the MAIN PWB ASSEMBLY Does the spring of Latch Hook actuate Is there clicking sound once or twice when the START PA...

Page 30: ... disassembling and repairing the parts Unscrew 2 screws on the back of the top plate Pull the top plate backward and upward as shown Disconnect the Display PWB Assembly connector from Trans cable Pull out the drawer and unscrew 2 screws Taking out 1 screw Lift the side the Control Panel Assembly and pull it out Unscrew the 8 screws from the Control Panel Assembly Disassemble the Display PWB Assemb...

Page 31: ...30 Disconnect the POWER connector and SENSOR SWITCH ASSEMBLY Remove the Protect Cover Disconnect the connectors Unscrew 1 screw on the back Disassemble the Main PWB PROTECT COVER MAIN PWB ASSEMBLY ...

Page 32: ...art of the dispenser Disassemble the 4 connectors from the valves Unscrew 2 screws from the back of the cabinet Disassemble two or three connectors from the NOISE FILTER Unscrew a screw from the TOP BRACKET Wire Color Blue Housing YL BK Red Housing VT BK White Housing WH BK Blue Housing GY BK Red Housing BL BK 5 DISPENSER ASSEMBLY NOISE FILTER ...

Page 33: ...upper of the canbinet cover Unscrew the screw from filter cover Put a flat screwdriver or putty knife into the both sides of the filter cover and pull it out Unscrew the screw from the lower side of the cabinet cover CABINET COVER ...

Page 34: ... the clamp assembly Tilt the cabinet cover Disconnect the door switch connector NOTE When assembling the CABINET COVER connect the connector Lift and separate the cabinet cover Disassemble the clamp assembly Disassemble the Gasket ...

Page 35: ...hinge and pull out the hinge cover Unscrew a screw from the lower side of door Disassemble the door upward DOOR Open the door and disassemble the CLAMP ASSEMBLY Unscrew the 2 screws DOOR LOCK SWITCH ASSEMBLY Be careful The door is heavy NOTE Reconnect the connector after replacing the DOOR SWITCH ASSEMBLY ...

Page 36: ...semble the cabinet cover Separate 2 connectors from the heater Loosen the nut and pull out the heater 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 ...

Page 37: ...m the tub Remove any foreign objects wire coin etc by inserting a long bar in the opening TOP PLATE ASSEMBLY Unscrew 2 screws on the back of the top plate Pull the top plate backward and upward as shown Disconnect the connector Disassemble the lamp assembly ...

Page 38: ... out the Rotor 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 and base Separate the dampers NOTE Once removed replace the damper with new one ...

Page 39: ...moving the water inside you can pull out the plug and let the water drain away Be cautious in case of the TSG is hot temperature Remove the housing coupled the TSG Heater Water level frequency sensor Thermistor Taking out the screw of the TSG and Body Frame ...

Page 40: ...39 Body Frame Taking out the screws of Body Frame 2EA Separate the hoses from the TSG Remove the Body Frame and then separate the TSG from the washer ...

Page 41: ...40 10 1 CABINET CONTROL PANEL ASSEMBLY 10 EXPLODED VIEW A105 A201 A220 A303 M410 M400 ...

Page 42: ...41 10 2 DRUM TUB ASSEMBLY K344 K346 K345 K123 K143 K115 K111 K340 K342 K131 K512 K560 K311 F315 F465 K125 F466 F467 F463 K130 F464 K121 K122 F145 K105 F468 K135 F328 K513 ...

Page 43: ...42 10 3 DISPENSER ASSEMBLY HOT RED COLD BLUE F327 ...

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