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LG WM1815CS Service Manual
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LG WM1815CS Service Manual

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See also: Owner's Manual

WASHING MACHINE

SERVICE MANUAL

CAUTION
!
READ THIS MANUAL CAREFULLY TO DIAGNOSE
PROBLEMS CORRECTLY BEFORE SERVICING THE UNIT.
MODEL: WM1812CW/WM1814CW/WM1815CS
Website: http: //www.LGEservice.com
E-mail: http: //www.LGEservice.com/techsup.html
100

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Summary of Contents for LG WM1815CS

  • Page 1: Washing Machine

    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: WM1812CW/WM1814CW/WM1815CS...
  • Page 2 JUN. 2004 PRINTED IN KOREA P/No.:3828ER3027F...

  • Page 3: Table Of Contents

    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.........................16 7-1. BEFORE PERFORMING SERVICE ...................16 7-2. QC TEST MODE.........................16 7-3.

  • Page 4: Specifications

    1. SPECIFICATIONS ITEM WM1812CW/WM1814CW WM1815CS COLOR BLUE WHITE TITANIUM POWER SUPPLY AC 120 V, 60 Hz PRODUCT WEIGHT 173 lbs. (78.5 kg) WASHING 280 W ELECTRIC POWER DRAIN MOTOR 80 W CONSUMTION – WASH HEATER WASH 46 rpm REVOLUTION SPEED...

  • Page 5: Features & Technical Explanation

    2. FEATURES & TECHNICAL EXPLANATION 2-1. FEATURES ■ Direct Drive System The advanced Brushless DC motor directly drives the drum without belt and pulley. ■ Tilted Drum and Large Door Opening Tilted drum and large opening make it possible to load and unload clothing more easily.

  • Page 6: Water Level Control

    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 washing rinsing time temperature FUZZY...

  • Page 7: Child Lock

    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 ACCESSORIES...

  • Page 9: Installation & Test

    4. INSTALLATION & TEST Before servicing, 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.
  • Page 10 HOW TO CONNECT THE INLET HOSE Verify that 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”...

  • Page 11: Test Operation

    TEST OPERATION Preparation for Press the POWER button. Press the Start/Pause washing. button. Connect the power plug to Listen for a click to determine if the outlet. the door has locked. Connect the inlet hoses. Check the water Check the automatic Check the water supply.

  • Page 12: Operation

    5. OPERATION EST. TIME REMAINING BEEPER, DELAY WASH, EXTRA RINSE button • This display shows: • Use the Beeper button to turn the Beeper On/Off. a) the estimated time remaining • Delay Wash allows the start of any cycle to be delayed for 1~9 in the cycle when operation.

  • Page 13: Wiring Diagram/Program Chart

    6. WIRING DIAGRAM PROGRAM CHART Cool-down **Approx. (Minutes) * Wash time is in minutes. ** The total working time will vary with the load size, water temperature and ambient temperature.

  • Page 14: Troubleshooting

    7. TROUBLESHOOTING 7-1. BEFORE PERFORMING SERVICE Be careful of electric shock when disconnecting parts while troubleshooting. The voltage of each terminal is 120 V AC and DC when the unit is plugged in. 7-2. QC TEST MODE. The washer must be empty and the controls must be in the off state. 1.

  • Page 15: Error Display

    7-4. ERROR DISPLAY If you press the START/PAUSE button when an error is displayed, any error except will disappear and the machine will go into the pause status. In case of if the error is not resolved within 20 sec., or the in case of other errors, if the error is not resolved within 4 min., power will be turned off automatically and the error code will blink.
  • Page 16 ERROR SYMPTOM CAUSE OVER • MAIN PWB ASSEMBLY is out of order. CURRENT • Winding in the STATOR ASSEMBLY is short-circuited. ERROR • The connector (3-pin, male, white) in the MOTOR HARNESS is not connected to the connector (3-pin, female, white) of STATOR ASSEMBLY. •...

  • Page 17: Error Diagnosis And Check List

    8. ERROR DIAGNOSIS AND CHECK LIST 8-1. DIAGNOSIS AND SOLUTION FOR ABNORMAL OPERATION SYMPTOM GUIDE FOR SERVICE CALL No power 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.
  • Page 18 SYMPTOM GUIDE FOR SERVICE CALL Door error Was the load too large? Visit to service. Drain trouble Visit to service.
  • Page 19 SYMPTOM GUIDE FOR SERVICE CALL Suds overflow from the Is a low-sudsing detergent used? appliance. (In this condition, wash and spin do not operate normally) LOW-SUDSING Is the proper amount of detergent used as recommended? Recommend to reduce the amount of detergent.

  • Page 20: Fault Diagnosis And Troubleshooting

    8-2. FAULT DIAGNOSIS AND TROUBLESHOOTING 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 Check the fuse or reset Is the supplied voltage 120 V AC?
  • Page 21 VIBRATION & NOISE IN SPIN Have all the transit bolts and base packing Remove the transit bolts been removed? and Base packing. Is the washer installed on a solidly constructed Move the washer or floor? reinforce the floor. Check if the washer is perfectly level as follows: Base Packing Level Check the leveling of the washer with a Level...
  • Page 22 If it still has severe vibration and noise, regulate a specific spin speed that generates excessive 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 ‘...

  • Page 23: No Water Supply

    NO WATER SUPPLY Is water supply shut-off? Is the tap opened? Open the tap. When you press both SPIN SPEED button and Check the AIR CHAMBER SOIL LEVEL button simultaneously, is the water and the tube (clogged). level frequency below 246? Is the inlet valve filter clogged? Clean the filter.
  • Page 24 SOFTENER/BLEACH DOES NOT FLOW IN Refer to Is water supplied? Prewash Bleach NO WATER SUPPLY Hot water Check the wiring on the Are the plugs correctly connected to the terminals of dispenser. the INLET VALVE ASSEMBLY? Main wash Put it in the correct Is softener/bleach put in the correct compartment of compartment.

  • Page 25: Drain Malfunction

    DRAIN MALFUNCTION Repair the DRAIN HOSE Is the drain hose twisted or frozen? ASSEMBLY. Is the impeller of the drain pump clogged? Remove foreign material. Reconnect or repair the Is the connector disconnected, disassembled? connector Replace the DRAIN Is the coil of the drain pump too high or low? PUMP ASSEMBLY.
  • Page 26 SPIN TROUBLE Check the SENSOR SWITCH ASSEMBLY or HOSE (Pressure). Check during spin if the frequency of the water If the problem is on the SENSOR level is 248 or more. SWITCH ASSEMBLY or the HOSE, replace the SENSOR SWITCH ASSEMBLY or the HOSE.

  • Page 27: Disassembly Instructions

    9. DISASSEMBLY INSTRUCTIONS Be sure to unplug the machine out of the outlet before disassembling and repairing the parts. CONTROL PANEL ASSEMBLY TOP PLATE ASSEMBLY 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.
  • Page 28 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 DISPENSER ASSEMBLY Disassemble the top plate assembly. Pull out the drawer. Push out the DISPENSER ASSEMBLY after unscrew 2 screws. CONTROL PANEL DRAWER ASSEMBLY 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)
  • Page 30 CABINET COVER Unscrew the 3 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.
  • Page 31 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.

  • Page 32: Door Lock Switch Assembly

    DOOR Open the door. Unscrew the 2 screws from the Cabinet Cover. Disassemble the door upward. Be careful! The door is heavy. DOOR LOCK SWITCH ASSEMBLY Open the door and disassemble the CLAMP ASSEMBLY. Unscrew the 2 screws. NOTE • Reconnect the connector after replacing the DOOR SWITCH ASSEMBLY.
  • Page 33 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 Unscrew the 4 screws from the back cover. Unscrew the single screw from the lower-right side of the cabinet.
  • Page 34 Disassemble the back cover. Remove the bolt. Pull 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.

  • Page 35: Exploded View

    10. EXPLODED VIEW 10-1. CABINET & CONTROL PANEL ASSEMBLY A450 A105 A490 A495 A141 A152 A131 A134 A201 A220 A303...

  • Page 36: Drum & Tub Assembly

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

  • Page 37: Dispenser Assembly

    10-3. DISPENSER ASSEMBLY HOT (RED) COLD (BLUE)

This manual is also suitable for:

Wm1812cwWm1814cw

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