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LG EM430S Service Manual

Built-in oven
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See also: Instruction and Installation Manual
Internal Use Only
Website: http://biz.lgservice.com
BUILT-IN OVEN
SERVICE MANUAL
MODEL: EM430S
CAUTION
BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
July, 2009
P/NO : MFL30426714
Printed in Korea

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Summary of Contents for LG EM430S

  • Page 1 Internal Use Only Website: http://biz.lgservice.com BUILT-IN OVEN SERVICE MANUAL MODEL: EM430S CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. July, 2009 P/NO : MFL30426714 Printed in Korea...

  • Page 2: Safety Precautions

    • In the event of a fault or damage to the appliance, and do not attempt to operate it. • Repairs of the appliance should be carried out by a licensed technician only. Wrong repairs may result in considerable danger. If you need repairs, contact an LG Service Center or your dealer.

  • Page 3: Safety During Operation

    • Young children should be supervised to ensure that they do not play with the appliance. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 4 • The appliance must not be disposed of with household rubbish. • You can obtain information about collection dates or public refuse disposal sites from your local refuse department or council. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 5: Table Of Contents

    REPLACEMENT PARTS LIST- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 9-1 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 6: Specifications

    44 Kg (Included packing weight : 5 Kg) * ECN (Engineering Change Number) code: ECN code may be issued in order to change parts or specification, if necessary. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 7 Conventional heat : Grill outer + Bottom heater Defrost : Convection fan Bottom heat : Bottom heater Large grill : Grill inner + Grill outer LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 8: Description Of The Feature

    Note : Rating plate can be located at left-hand inner edge of the door or front-side of the oven. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 9: Control Panel

    1. Timer button 5. Less button 2. Clock button 6. More button 3. Operating mode knob 7. Temperature knob 4. Time display LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 10: Accessories

    Slide the pan or wire grill in at the desired level. The oven levels are numbered from the bottom up to the top. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 11: Side Runners

    2. Align the front recess with the front screw hole. Insert and fasten a screw ockwise. 3. Attach the other in the same way. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 12: Principle Of Main System

    When the oven is switched off, the fan is also switched off. Switching the oven off Set the Operating mode knob to "O" to switch the oven off. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 13 Q: The fan makes a noise during cooling the oven. A: Remove the obstruction from the circumference of the fan for proper rotation. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 14: Oven Lamp System

    3. Refit the glass cover. Note : Make sure that all parts are correctly in place. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 15: Function Switch

    All electrical contacts of the switch should be equal to the contacts of the below schematic diagram. If there are some problems of oven operating, check the wiring of the function switch. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 16: Power Transformer

    1. Put the capillary tube only into the liquid test bath. (adjustable temperature equipment) 2. Ambient temperature around other parts should maintain 23°C. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 17: Electrical Connections

    There are two type of earth in this oven connections. Earth connections are consist of earth terminal tap and earth terminal ring. 220~240V 220~240V 220~240V 220~240V 220~240V LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 18: Convection System

    Convection fan Convection heater Fixing nut 1780rpm at 230V, built The fixing nut is locked counterclockwise. Chamber fixing screw Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 19: Door System

    Step. 4 Hold the door securely at both sides and lift upwards off the hinge guides. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 20 Make sure that the notches on the locking clamps hook into the slots on the door as illustrated. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 21 Door top cover Step. 2 Lift the innermost pane up and out from the door carefully. Then remove the insulator. insulator LGE Internal Use Only 5-10 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 22 Handle them very carefully to avoid the risk of breakage. Door top cover Spacer mount bracket Insulator Pane #1 Pane #2 Pane #3 Copyright © 2007 LG Electronics. Inc. All right reserved. 5-11 LGE Internal Use Only Only for training and service purposes...
  • Page 23 LGE Internal Use Only 5-12 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 24: Control System

    1. Pull out two knobs from the controller assembly. 2. Release the 4 screws and disassemble the function switch and the variable thermostat from the controller assembly. Copyright © 2007 LG Electronics. Inc. All right reserved. 5-13 LGE Internal Use Only...
  • Page 25 Then, loosen tensions of the 7 hooks for fixing pcb and take out the pcb. 4. controller parts which are seperated. LGE Internal Use Only 5-14 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 26: General Trouble Shooting

    Check the connection of relay or convection heater may be defective. convection heater. If not any defection, replace convection heater or the PCB. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 27 Connection of the lamp or function Check the wiring. switch may be defective. Lamp may be burned out. Replace the lamp. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 28: Electric Circuit Drawing

    ELECTRIC CIRCUIT DRAWING INN : grill - inner heater Function Operating switch Operating parts OUT : grill -outer heater 1,2,6,7,8 C.M, C.H, LAMP, F.M BTM : bottom heater 3,5,6,7,8 BTM, OUT, LAMP, F.M C.H : convection heater 4,5,6,7,8 INN, OUT, LAMP, F.M C.M : convection motor F.M : fan motor 1,4,5,6,7,8...

  • Page 29: Exploded View

    #EV# EXPLODED VIEW INSTRUCTION PARTS MODEL: INSULATOR PARTS CONTROLLER PARTS INTERIOR PARTS DOOR PARTS CAVITY PARTS -8-1-...

  • Page 30: Door Parts

    #EV# DOOR PARTS 150062 15012A 152101 150062 WMT018 13550T WMT018 WMP029 154101 13806D WMP029 150061 WWZ084 WMT015 13650A WWZ084 148902 148901 150061 14891A 13806D WMP029 WMP029 -8-2-...

  • Page 31: Controller Parts

    #EV# CONTROLLER PARTS 24781S 268711 26600R 250201 24980A 23790D 23572A 26931A 250201 24941A 24941A 268771 -8-3-...

  • Page 32: Cavity Parts

    #EV# CAVITY PARTS 34810C 33550T 33808A 535502 WSZ002 34810M 550121 54620A 35006A 56411A 53446A WMP033 350263 35230A 350262 535501 WSZ230 63302A 34774L WSZ230 -8-4-...

  • Page 33: Interior Parts

    #EV# INTERIOR PARTS 54974T 56913A 55209A 550122 36640B 550123 WNZ026 WNZ015 WNZ026 54681R 55900N WWZ087 33920F WNH008 353003 WSZ221 WSZ221 WNH201 55900C 54350S WNZ026 WWZ085 WWZ085 53504A WSZ221 333902 353001 54810H WSZ221 350261 353002 333901 -8-5-...

  • Page 34: Insulator Parts

    #EV# INSULATOR PARTS 56549F 34930W 55262A 535503 55900A WNZ018 56930V -8-6-...

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