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LG WM1812CW, Service Manual

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LG WM1812CW Service Manual Download Page 33

32

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 Harness.

Disassemble the Back cover.

Unscrew a screw from the Tub.

Unplug the white connector from the thermistor.

Pull it out by holding the bracket of the

thermistor.

CONNECTOR

Summary of Contents for WM1812CW

Page 1: ...NE SERVICE MANUAL READ THIS MANUAL CAREFULLY TO DIAGNOSE PROBLEMS CORRECTLY BEFORE SERVICING THE UNIT MODEL WM1812CW WM1814CW WM1815CS CAUTION Website http www LGEservice com E mail http www LGEservice com techsup html ...

Page 2: ...101 JUN 2004 PRINTED IN KOREA P No 3828ER3027F ...

Page 3: ...6 7 2 QC TEST MODE 16 7 3 HOW TO CHECK THE WATER LEVEL FREQUENCY 16 7 4 ERROR DISPLAY 17 8 ERROR DIAGNOSIS AND CHECK LIST 19 8 1 DIAGNOSIS AND SOLUTION FOR ABNORMAL OPERATION 19 8 2 FAULT DIAGNOSIS AND TROUBLESHOOTING 22 9 DISASSEMBLY INSTRUCTIONS 31 10 EXPLODED VIEW 40 10 1 CABINET CONTROL PANEL ASSEMBLY 40 10 2 DRUM TUB ASSEMBLY 41 10 3 DISPENSER ASSEMBLY 42 3 4 7 8 11 12 13 13 13 13 14 16 16 19...

Page 4: ...e Extra Rinse Rinse Spin Delay Wash CUSTOM PROGRAM WATER CIRCULATION OPERATIONAL WATER PRESSURE 4 5 116 psi 800 kPa CONTROL TYPE Electronic WASH CAPACITY 2 96 cu ft 3 42 cu ft IEC DIMENSIONS 27 W X 301 32 D X 38 11 16 H 50 13 16 D door open DELAY WASH up to 9 hours DOOR SWITCH TYPE PTC Solenoid WATER LEVEL 9 steps by sensor LAUNDRY LOAD SENSING Incorporated ERROR DIAGNOSIS Incorporated AUTO POWER ...

Page 5: ...arge opening make it possible to load and unload clothing more easily Time Released Dispenser Detergent fabric softener and bleach are dispensed separately at the right time during wash cycle Automatic Wash Load Detection Automatically detects the load and optimizes the washing time Child Lock The Child lock prevents children from pressing any button to change the settings during operation 추가선택 예약...

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: ... kHz It can be canceled when the frequency is more than 23 8 kHz When the temperature inside the tub is higher than 45 C and water level is not 25 5 kHz It can be canceled when the water level is 25 5 kHz or the temperature inside the tub is lower than 40 C 2 7 CHILD LOCK Use this option to prevent unwanted use of the washer Press and hold OPTION button for 3 seconds to lock unlock control When Ch...

Page 8: ...7 3 PARTS IDENTIFICATION ACCESSORIES 울 란제리 란제리 ...

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: ...ked 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 present temperature will clockwise and counterclockwise through the detergent dispenser be displayed Check the water Check the automatic Check the...

Page 12: ...e through available options To change the soil level press the Soil Level button repeatedly until the desired setting is on OPTION button Prewash Use this option for loads that need pretreatment It adds 16 minutes prewash and drain POWER button Use this button to turn power On Off Quick Cycle The Quick offers a quick cycle time Rinse Spin Use this option to rinse and then spin BEEPER DELAY WASH EX...

Page 13: ... Cool down Approx Minutes Wash time is in minutes The total working time will vary with the load size water temperature and ambient temperature 12 6 WIRING DIAGRAM PROGRAM CHART ...

Page 14: ...splay indicating 241 a Water level frequency of 241 x 1 kHz 24 1 kHz The digits indicate the water level frequency x 1 kHz Check Point Display Status None Turns on all lamps and locks the door 1 time Tumble clockwise rpm 40 50 2 times Low speed Spin rpm 3 times High speed Spin rpm 4 times Inlet valve for prewash turns on Water level frequency 25 65 5 times Inlet valve for main wash turns on Water ...

Page 15: ...utes 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 wa...

Page 16: ...e 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 9 LOCKED MOTOR ERROR Loose Ball Sensor Connector Ball Sensor is out of order Displayed only when the START PAUSE button is first pressed in the QC Test Mode 10 BALL SENSOR ERROR The washer experienced a p...

Page 17: ... 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 18: ...17 SYMPTOM GUIDE FOR SERVICE CALL Door error Drain trouble Was the load too large Visit to service Visit to service ...

Page 19: ...to reduce 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 LOW SUDSING 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 w...

Page 20: ...WB 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 ...

Page 21: ... that the washer is stable 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 n...

Page 22: ...n 6 Press the Beeper button repeatedly to set spin speed 600 700 800 900 1000 rpm and check if there is vibration and noise 7 If there is no vibration and noise increase the spin speed by pressing Beeper button 8 If there is vibration and noise press the Cycle selector button to reduce the Spin Speed reduce by 50 and 100 rpm In case of 600 rpm it can not reduce the spin speed 9 If vibration and no...

Page 23: ...age 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 conne...

Page 24: ...MBLY or ROTOR ASSEMBLY Refer to NO WATER SUPPLY Check the 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 softener bleach put in the correct compartment of the drawer Is the softener bleach...

Page 25: ...SEMBLY Replace the MAIN PWB ASSEMBLY 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 resistance of the coil is 10 20 Ω When checking voltage between connectors during spin is the voltage 120 V AC as in the figure DRAIN MALFUNCTION ...

Page 26: ...um 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 PAUSE button is pressed to start the cycle Is DOOR SWITCH ASSE...

Page 27: ... machine out of the outlet before 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 connectors from the Main PWB Assembly Pull out the drawer and unscrew 2 screws Lift the left side of the Control Panel Assembly and pull it out ...

Page 28: ...27 Unscrew the 4 screws from the Control Panel Assembly Disassemble the Main PWB Assembly Unscrew the 5 screws from the Control Panel Assembly Disassemble the Display PWB Assembly ...

Page 29: ...t of the dispenser Disassemble the 4 connectors from the valves Unscrew 2 screws from the back of the cabinet Disassemble two connectors from the Filter Assembly Unscrew a screw from the TOP BRACKET Wire Color Blue Housing OR BK White Housing WH BK Blue Housing GY BK Red Housing BL BK DISPENSER ASSEMBLY NOISE FILTER CONTROL PANEL ASSEMBLY DRAWER ...

Page 30: ...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 31: ... 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 32: ...LAMP ASSEMBLY Unscrew the 2 screws Disassemble the cabinet cover Separate the pump hose the bellows and the circulation hose assembly from the pump assembly Disassemble the pump assembly in arrow direction DOOR LOCK SWITCH ASSEMBLY Be careful The door is heavy NOTE Reconnect the connector after replacing the DOOR SWITCH ASSEMBLY ...

Page 33: ...ngle screw from the lower right side of the cabinet Disconnect the connector from PWB Harness Disassemble the Back cover Unscrew a screw from the Tub Unplug the white connector from the thermistor Pull it out by holding the bracket of the thermistor CONNECTOR ...

Page 34: ... 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 35: ...34 10 1 CABINET CONTROL PANEL ASSEMBLY 10 EXPLODED VIEW A105 A495 A450 A490 A134 A131 A152 A141 A303 A201 A220 ...

Page 36: ...35 10 2 DRUM TUB ASSEMBLY K123 K143 K115 K111 K342 K131 K130 F466 F463 F315 F465 K125 F464 K121 K122 K311 F468 K346 K344 K340 F145 K105 F467 ...

Page 37: ...36 10 3 DISPENSER ASSEMBLY HOT RED COLD BLUE ...

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