LG WM2077CW Service Manual
LG WM2077CW Manual
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- LG WM2077CW | Service Manual - Page 1
Website: http: //www.LGEservice.com E-mail: http: //www.LGEservice.com/techsup.html WASHING MACHINE SERVICE MANUAL ! CAUTION READ THIS MANUAL CAREFULLY TO DIAGNOSE PROBLEMS CORRECTLY BEFORE SERVICING THE UNIT. MODEL: WM2277H*/WM2077CW WM2177H*/WM2677H*M WD-11270BD 100 - LG WM2077CW | Service Manual - Page 2
APR. 2004 PRINTED IN KOREA P/No.:3828ER3018Y 101 - LG WM2077CW | Service Manual - Page 3
TO CHECK THE WATER LEVEL FREQUENCY 17 7-4. ERROR DISPLAY ...18 8. ERROR DIAGNOSIS AND CHECK LIST 20 8-1. DIAGNOSIS AND SOLUTION FOR ABNORMAL OPERATION 20 8-2. FAULT DIAGNOSIS AND TROUBLESHOOTING 23 9. DISASSEMBLY INSTRUCTIONS 32 10. EXPLODED VIEW ...41 10-1. CABINET & CONTROL PANEL ASSEMBLY 41 - LG WM2077CW | Service Manual - Page 4
kPa) CONTROL TYPE Electronic WASH CAPACITY [cu. ft.] DIMENSIONS DELAY WASH 3.32 (3.83 IEC) 3.22 (3.72 IEC) 27" (W) X 29 3/4" (D) X 3811/16" (H), 5013/16" (D, door open) up to 19 hours up to 12 hours up to 9 hours DOOR SWITCH TYPE PTC + Solenoid WATER LEVEL 10 steps (by sensor) LAUNDRY - LG WM2077CW | Service Manual - Page 5
Drum and Extra Large Door Opening Tilted drum and extra large door opening make it possible to load and unload easily. Water Circulation Spray detergent solution and water onto the load repeatedly. Clothes are soaked more quickly and thoroughly during the wash cycle. Detergent suds are eliminated - LG WM2077CW | Service Manual - Page 6
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 - LG WM2077CW | Service Manual - Page 7
seconds to lock/unlock control. When Child lock is set, CHILD LOCK lights and all buttons are disabled except the Power button. You can lock the 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 - LG WM2077CW | Service Manual - Page 8
3. PARTS IDENTIFICATION ACCESSORIES Water Circulation Nozzle A Safety Cover (PLC Moderm) 7 - LG WM2077CW | Service Manual - Page 9
, ask the customer what the trouble is. Check the setup (power supply is 120 V AC, remove the transit bolts....). Check with the troubleshooting guide. Plan your service method by referring to the disassembly instructions. Service the unit. After servicing, operate the appliance to see whether - LG WM2077CW | Service Manual - Page 10
the rubber washer is inside of the valve connector. Tighten the inlet hose securely to prevent leaks. CONNECT THE DRAIN HOSE Make sure that the hose is not twisted. Avoid submerging the end of the hose. The end of the drain hose should be placed less than 96" from the floor. CONNECT POWER PLUG - LG WM2077CW | Service Manual - Page 11
the START/PAUSE button. Check if water is supplied through the detergent dispenser. Water removal Power off and the power on. Press the SPIN SPEED button. Press the START/PAUSE button. Check the spin and drain functions. Listen for a click to determine if the door is unlocking. If SVC is needed - LG WM2077CW | Service Manual - Page 12
5. OPERATION WM2277H*/WM2177H* WM2077CW WM2677H*M 11 - LG WM2077CW | Service Manual - Page 13
the power On/Off. • This display shows: a) the estimated time remaining in the cycle when operating. b) an error code when an error has been detected. • Use this option to preven Press and hold PRE WA lock/unlock control. • When Child lock is set, C buttons are disabled exc can lock the washer - LG WM2077CW | Service Manual - Page 14
of the cycle the washer is operating. • Lights whenever the door of the washer is locked. • The door can be unlocked by pressing the Start/Pause button to stop the washer. Select a water temperature based on the type of oad you are washing. To change the spin speed, press the Spin Speed button - LG WM2077CW | Service Manual - Page 15
6. WIRING DIAGRAM/PROGRAM CHART WM2277H* WM2077CW BL GN BN / YL GN / YL RD 1 2 3 123 NOISE FILTER 123 WH 1 2 3 BK GN WH POWER CORD 14 BL GN BN / YL GN / YL RD 1 2 3 123 NOISE FILTER 123 WH 1 2 3 BK GN WH POWER CORD - LG WM2077CW | Service Manual - Page 16
/ YL WASHING HEATER GN / YL GN / RD YL 123 123 NOISE RD FILTER 123 YL BL RD BK WH 1 2 3 4 2 3 3 2 4 1 5 WH BK BK 8 7 6 5 YL 1 2 4 3 2 1 WH PLC MODEM PRESSURE SWITCH BN BK BK SB P T C SOLE NOID P T C BK GN WH DRAIN PUMP CIRCULATION PUMP DOOR LOCK SWITCH POWER CORD - LG WM2077CW | Service Manual - Page 17
Cool-down * * **Approx. (Minutes) * Wash time is in minutes. ** The total working time will vary with the load size, water temperature and ambient temperature. 16 - LG WM2077CW | Service Manual - Page 18
for main wash turns on. 6 times Inlet valve for hot water turns on. 7 times Inlet valve for bleach turns on. 8 times Tumble counterclockwise. 9 times Heater turns on for 3 sec. 10 times Circulation pump turns on. 11 times Drain pump turns on. 12 times Power off and unlock the door - LG WM2077CW | Service Manual - Page 19
• Not fully drained within 10 minutes. 4 OVER FLOW ERROR PRESSURE 5 SENSOR ERROR 6 DOOR OPEN ERROR 7 HEATING ERROR • Water is overflowing (water level frequency is over 213). If is displayed, the drain pump will operate to drain the water automatically. • The SENSOR SWITCH ASSEMBLY is - LG WM2077CW | Service Manual - Page 20
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. • Loose Ball Sensor Connector. • Ball Sensor is out of order. Displayed only when - LG WM2077CW | Service Manual - Page 21
8. ERROR DIAGNOSIS AND CHECK LIST 8-1. DIAGNOSIS AND SOLUTION FOR ABNORMAL OPERATION SYMPTOM No power Water inlet trouble GUIDE FOR SERVICE CALL Is the power plug connected firmly to 120 V AC outlet? YES Power failure? or Breaker opened? Is the outlet controlled by a switch? NO Visit to service. - LG WM2077CW | Service Manual - Page 22
SYMPTOM Door error GUIDE FOR SERVICE CALL Was the load too large? Drain trouble Visit to service. Visit to service. 21 - LG WM2077CW | Service Manual - Page 23
from the appliance. (In this condition, wash and spin do not operate normally) GUIDE FOR SERVICE CALL Is a low-sudsing detergent used? When excessive suds are sensed, the suds removing implementations such as drain, water input, pause will operate, without rotating the drum. Liquid laundry - LG WM2077CW | Service Manual - Page 24
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 Connector Is the supplied voltage 110/120 - LG WM2077CW | Service Manual - Page 25
in high speed, verify that it is stable. If you do not have the unbalance part, put 4.5 to 6.5 lbs (2 to 3 kg) of clothing. Once loaded, press power, Rinse+Spin and the start/pause button in sequence. When the machine is spinning in high speed, verify that it is stable. YES If it is not stable - LG WM2077CW | Service Manual - Page 26
vibration and noise as follows: 1) Put an unbalance part (rubber) inside of the drum. 2) Start the QC test mode (Refer to section 7-2). 3) Press Delay Wash button, then ' ' is displayed. 4) Press the Spin Speed button repeatedly to select Extra High. 5) Press the Quick Cycle button, the spin - LG WM2077CW | Service Manual - Page 27
opened? NO YES When you press both SPIN SPEED button and SOIL LEVEL button simultaneously, is the water YES level frequency below 246? NO Is electrical connection. NO Replace the MAIN PWB ASSEMBLY. DETERGENT DOES NOT FLOW IN Is water supplied? YES NO Refer to NO WATER SUPPLY Are receptacles - LG WM2077CW | Service Manual - Page 28
/BLEACH DOES NOT FLOW IN Prewash Hot water Bleach Main wash 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? Refer to NO WATER SUPPLY Check the wiring on the - LG WM2077CW | Service Manual - Page 29
coil is 10-20 Ω) NO YES Repair the DRAIN HOSE ASSEMBLY. YES Remove foreign material. YES Reconnect or repair the connector YES Replace the DRAIN PUMP ASSEMBLY. When checking voltage between connectors during NO spin, is the voltage 120 V AC as in the figure? Replace the MAIN PWB ASSEMBLY. 28 - LG WM2077CW | Service Manual - Page 30
WASH HEATER TROUBLE HEATING CONTINUOUSLY ABOVE THE SETTING WATER TEMPERATURE Extra Hot: 70 °C 25 (1) When checking the THERMISTOR on the tub, is the THERMISTOR loose? 29 Push the THERMISTOR tightly to the rubber. - LG WM2077CW | Service Manual - Page 31
or repair the connector. Connector NO Is the coil of the right side of drain pump open or short circuited? (Coil R is 18-30 Ω) YES Replace PUMP MOTOR ASSEMBLY. NO When checking voltage between the connectors during spin, is the voltage 120 V AC, NO as the figure? Replace the MAIN PWB - LG WM2077CW | Service Manual - Page 32
(2) SPIN TROUBLE Check during spin if the frequency of the water level is 248 or more. Press the START/PAUSE button 2 times in QC Test mode, is the drum spinning at low speed? Check the SENSOR SWITCH ASSEMBLY or HOSE (Pressure). If the problem is on the SENSOR SWITCH ASSEMBLY or the HOSE, replace - LG WM2077CW | Service Manual - Page 33
9. DISASSEMBLY INSTRUCTIONS Be sure to unplug the machine out of the outlet before disassembling and repairing the parts. TOP PLATE ASSEMBLY Unscrew 2 screws on the back of the top plate. Pull the top plate backward and upward as shown. DRAWER CONTROL PANEL ASSEMBLY Disconnect the Display PWB - LG WM2077CW | Service Manual - Page 34
Disconnect the POWER connector and SENSOR SWITCH ASSEMBLY. Remove the Protect Cover. CONNECTOR PROTECT COVER Disconnect the connectors. Unscrew 1 screw on the back. Disassemble the Main PWB. 33 - LG WM2077CW | Service Manual - Page 35
Disassemble the top plate assembly. Pull out the drawer. Push out the DISPENSER ASSEMBLY after unscrew 2 screws. Unscrew the nut at the lower part of the dispenser. Disassemble the 4 connectors from the valves. Wire Color Blue Housing (OR-BK) White Housing (WH-BK) Blue Housing (GY-BK) Red Housing ( - LG WM2077CW | Service Manual - Page 36
Unscrew the 4 screws from 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. 35 - LG WM2077CW | Service Manual - Page 37
Open the door. Disassemble 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. 36 - LG WM2077CW | Service Manual - Page 38
of the hinge, and pull out the hinge cover. Unscrew a screw from the lower side of door. Disassemble the door upward. Be careful! The door is heavy. Open the door and disassemble the CLAMP ASSEMBLY. Unscrew the 2 screws. NOTE • Reconnect the connector after replacing the DOOR SWITCH ASSEMBLY. 37 - LG WM2077CW | Service Manual - Page 39
hose, the bellows and the circulation hose assembly from the pump assembly. Disassemble the pump assembly in arrow direction. Disassemble the cabinet cover. Separate 2 connectors from the heater. Loosen the nut and pull out the heater. CAUTION • When assembling the - LG WM2077CW | Service Manual - Page 40
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. Unscrew the 4 screws from the back cover. Unscrew the single screw from the lower-right side of the cabinet. Disconnect the connector from PWB - LG WM2077CW | Service Manual - Page 41
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 pin with new one. 40 - LG WM2077CW | Service Manual - Page 42
10. EXPLODED VIEW 10-1. CABINET & CONTROL PANEL ASSEMBLY A485 A455 A410 A152 A450 F210 A150 A154 A110 A111 F215 F110 A495 A102 A103 A490 A104 A105 A151 A153 A130 A140 A390 A131 A141 A101 A100 A430 A133 A440 A310 A300 A303 A200 41 A155 A201 A220 - LG WM2077CW | Service Manual - Page 43
10-2.DRUM & TUB ASSEMBLY K351 K350 K360 K143 K123 F140 K411 K410 K110 K111 K140 K571 K572 K115 K141 F310 K610 K611 F466 F315 F465 K570 K320 K310 K311 K560 K510 K512 K131 K340 K130 K530 F463 F464 K135 K122 K125 K121 K105 F467 K342 K346 K344 K345 F145 F468 K520 F461 K540 - LG WM2077CW | Service Manual - Page 44
10-3. DISPENSER ASSEMBLY F300 F462 F323 F322 F321 F227 F226 F220 F225 F440 F436 F431 F170 F160 F430 F441 F435 F120 HOT (RED) A275 F130 COLD (BLUE) A276 F432 43 - LG WM2077CW | Service Manual - Page 45
LG MODEL: WD-11270BD.ABWEEUS Run_Date : 2004-04-09 YOUR MODEL: WM2277HW SPECIFICATION: 120V 60Hz S AL LOC DESCRIPTION PARTS No. Q'TY REMARKS *001 MANUAL ASSEMBLY,OWNERS 3829ER3021Q 1 *002 BOX,CARTON 3890EZ3524A 1 *003 SPANNER 3W20018B 1 *004 MANUAL,SERVICE 3828ER3018Y 0 *005 MANUAL - LG WM2077CW | Service Manual - Page 46
ASSEMBLY K115 SPIDER K121 BEARING,BALL K122 BEARING,BALL K123 BOLT ASSEMBLY K125 SEAL K140 COVER ASSEMBLY,TUB K141 SEAL K143 SCREW,DRAWING K310 THERMISTOR ASSEMBLY K320 HEATER ASSEMBLY K340 MOTOR ASSEMBLY,PUMP K343 CLAMP K344 CASING,PUMP K345 MOTOR ASSEMBLY,PUMP K346 FILTER(MECH - LG WM2077CW | Service Manual - Page 47
LG MODEL: WD-11275BD.ABPEEUS Run_Date : 2004-04-09 YOUR MODEL: WM2277HB SPECIFICATION: 120V 60Hz S AL LOC DESCRIPTION PARTS No. Q'TY REMARKS *001 MANUAL ASSEMBLY,OWNERS 3829ER3021Q 1 *002 BOX,CARTON 3890EZ3524A 1 *003 SPANNER 3W20018B 1 *004 MANUAL,SERVICE 3828ER3018Y 0 *005 MANUAL - LG WM2077CW | Service Manual - Page 48
ASSEMBLY K115 SPIDER K121 BEARING,BALL K122 BEARING,BALL K123 BOLT ASSEMBLY K125 SEAL K140 COVER ASSEMBLY,TUB K141 SEAL K143 SCREW,DRAWING K310 THERMISTOR ASSEMBLY K320 HEATER ASSEMBLY K340 MOTOR ASSEMBLY,PUMP K343 CLAMP K344 CASING,PUMP K345 MOTOR ASSEMBLY,PUMP K346 FILTER(MECH - LG WM2077CW | Service Manual - Page 49
LG MODEL: WD-10270BD.ABWEEUS Run_Date : 2004-04-09 YOUR MODEL: WM2077CW SPECIFICATION: 120V 60Hz S AL LOC DESCRIPTION PARTS No. Q'TY REMARKS *001 MANUAL ASSEMBLY,OWNERS 3829ER3024Q 1 *002 BOX,CARTON 3890EZ3524A 1 *003 SPANNER 3W20018B 1 *004 MANUAL,SERVICE 3828ER3018Y 0 *005 MANUAL - LG WM2077CW | Service Manual - Page 50
K122 BEARING,BALL K123 BOLT ASSEMBLY K125 SEAL K140 COVER ASSEMBLY,TUB K141 SEAL K143 SCREW,DRAWING K310 THERMISTOR ASSEMBLY K340 MOTOR ASSEMBLY,PUMP K343 CLAMP K344 CASING,PUMP K346 FILTER(MECH) K350 STATOR ASSEMBLY K360 ROTOR ASSEMBLY K410 SPRING,HINGE K411 HOLDER K510 GASKET K520
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WASHING MACHINE
SERVICE MANUAL
READ THIS MANUAL CAREFULLY TO DIAGNOSE
PROBLEMS CORRECTLY BEFORE SERVICING THE UNIT.
MODEL: WM2277H*/WM2077CW
WM2177H*/WM2677H*M
WD-11270BD
CAUTION
Website: http: //www.LGEservice.com
E-mail: http: //www.LGEservice.com/techsup.html
!