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LG LUTE4619SN Service Manual

Slide-in electric range
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30" Slide-in Electric Range
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
MODEL:
LUTE4619SN
Any reproduction, duplication, distribution (including by way of email, facsimile or other electronic means), publication, modification, copying or transmission of
this Service Manual is STRICTLY PROHIBITED unless you have obtained the prior written consent of the LG Electronics entity from which you received this
Service Manual. The material covered by this prohibition includes, without limitation, any text, graphics or logos in this Service Manual.
Copyright © 2017 LG Electronics Inc. All rights reserved. Only training and service purposes
February, 2017
P/NO.: MFL37118385
Printed in Korea

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  • Page 1 Any reproduction, duplication, distribution (including by way of email, facsimile or other electronic means), publication, modification, copying or transmission of this Service Manual is STRICTLY PROHIBITED unless you have obtained the prior written consent of the LG Electronics entity from which you received this Service Manual.
  • Page 2 FORWARD This LG Service Manual, “30” Slide-in Self Cleaning Electric Double Range,” provides the technician with information on the operation and service of the Slide-in Self Cleaning Electric Double Range. It is to be used as a training Service Manual. For specific information on the model being serviced, refer to the “Owner’s Manual”...

  • Page 3: Table Of Contents

    TABLE OF CONTENTS (Page) GENERAL ....................................1-1 • Important Safety Instructions ......................................1-1 • Model & Serial Number Label and Tech Sheet Locations ............................. 1-5 • Specifications ..........................................1-6 USING YOUR RANGE .................................2-1 • General Information ........................................2-1 • Control Panel Features ........................................2-2 •...
  • Page 4 (Page) • Removing the Back Cover ......................................3-2 • Removing the Oven Relay Pcb, Power Pcb, Power Relay ............................3-3 • Removing the Controller ........................................ 3-4 • Removing the Main Pcb and Key Pcb Assembly ................................3-5 • Removing Knob and Infinite Switch ....................................3-7 •...
  • Page 5 (Page) SCHEMATIC DIAGRAM ..............................5-1 • Lower BAKE/CONV. BAKE/CONV. ROAST .................................. 5-2 • Upper Selfclean ..........................................5-2 • Lower Selfclean ..........................................5-3 • Oven Lamp ............................................ 5-3 • Bridge Cook-top Element ....................................... 5-3 • CR Cook-top Element ........................................5-3 • RR Cook-top Element ........................................5-4 •...

  • Page 6: General

    GENERAL ImpORTANT SAFETy INSTRuCTIONS Read and follow all instructions before using your oven to prevent the risk of fire, electric shock, injury to person, or damage when using the range. This guide don’t cover all possible conditions that may occur. For further assistance contact your service agent or manufacturer. This is the safety alert symbol.
  • Page 7 GENERAL ImpORTANT SAFETy INSTRuCTIONS CAUTION • Always use Pot Holders or oven mitts when removing food from the Warming Drawer. - You can be burned as cookware and plates will be hot. • Be careful when you work on the electric range handling the sheet metal part. - Sharp edge may be present and you can cut yourself.
  • Page 8 GENERAL ImpORTANT SAFETy INSTRuCTIONS • Be sure your appliance is properly installed and grounded by a qualified technician. WARNING • Do not repair or replace any part of the appliance unless specifically recommended in the manual. • DO NOT store items of interest to children in cabinets All other servicing should be referred to a qualified technician.
  • Page 9 GENERAL ImpORTANT SAFETy INSTRuCTIONS SELF-CLEAN OVENS WARNING • Do Not Clean Door Gasket – The door gasket is essential for a good seal. Care should be taken not to rub, damage, or move the gasket. • DISCONNECT power supply cord from the outlet before •...

  • Page 10: Model & Serial Number Label And Tech Sheet Locations

    GENERAL mOdEL & SERIAL NumBER LABEL ANd TECh ShEET LOCATIONS The Model/Serial Number label and Tech Sheet locations are shown below. Model & Serial Number Location Tech Sheet Location...

  • Page 11: Specifications

    GENERAL SpECIFICATIONS Model Number LUTE4619SN Category Double oven range Overall Width 30" Installation type Slide-in Color availability Control Oven Metal Touch Cooktop Knob Display Electronic clock & timer Control lock capability Audible preheat signal Special function Setting (8 categories) 1. Change hour mode on Clock 2.
  • Page 12 GENERAL SpECIFICATIONS Model Number LUTE4619SN Oven Capacity(cu.ft) 3.0(Upper) / 4.3(Lower) Broil element 3000 W(Upper) / 3800 W(Lower) Bake element 2400 W(Upper) Convection system No(Upper) / Yes(Lower) Convection element 2500(Lower) # of Rack Positions 2(Upper) / 4(Lower) Interior oven light 1(Upper) / 1(Lower)

  • Page 13: Using Your Range

    uSING yOuR RANGE GENERAL INFORmATION Upper oven Rating Label Model numbers are recorded on the rating label. Before ordering parts, Broil element write down the correct model and serial number from rating label. This avoids incorrect shipments and delays. Please refer to parts reference material when ordering replacement parts.

  • Page 14: Control Panel Features

    uSING yOuR RANGE CONTROL pANEL FEATuRES WARM SINGLE SINGLE ZONE BRIDGE TRIPLE BRIDGE A. LEFT FRONT CONTROL KNOB: Use to control Left Front and Bridge E. RIGHT FRONT CONTROL KNOB: Use to control Right Front Element. Elements. F. OVEN MODE KNOB: Turn the knob to select oven operating mode. B.

  • Page 15: Using The Cooktop

    uSING yOuR RANGE uSING ThE COOkTOp COOkING AREAS uSING ThE COOkTOp ELEmENTS The cooking areas on your range are identified by permanent circles on the CAUTION glass cooktop surface. For the most efficient cooking, fit the pan size to the element size.
  • Page 16 uSING yOuR RANGE Turning on the Bridge Element The Warming Zone There is one dual element located in the left front position. Use the dual The Warming Zone, located in the back center of the glass surface, will element as a single or bridge element. The bridge element heats the front keep hot, cooked food at serving temperature.

  • Page 17: The Recommended Surface Cooking Setting

    uSING yOuR RANGE ThE RECOmmENdEd SuRFACE COOkING SETTING Setting Recommended Use • Bring liquid to a boil 8.5-Hi • Start cooking • Hold a rapid boil, frying, deep fat fry 5.5-8.0 • Quickly brown or sear food • Maintain a slow boil 3.5-5.0 •...
  • Page 18 uSING yOuR RANGE CONTROL pANEL FEATuRES 1 Smart Diagnosis™ 6 - /+ Use during the Smart Diagnosis feature. Press the plus button to increase cooking time or oven temperature. Press the minus button to decrease cooking time or oven temperature. 2 Cook Time / Clock 7 START / Oven Light •...

  • Page 19: Setting The Clock

    uSING yOuR RANGE GENERAL 1. SETTING ThE CLOCk 5. SETTING 1) Hour Mode 1. Press and hold Cook Time for three seconds. 2. Press plus(+) or minus(-) to select the desired time. Plus(+) to 1. Press and hold Start Time for three seconds. increase the time and minus(-) to decrease the time.

  • Page 20: Broil (For Both The Upper & Lower Oven)

    uSING yOuR RANGE 4) Preheating Alarm Light On/Off 6. TImEd COOk, dELAyEd TImEd COOk 1. Press and Hold the Start Time for three seconds. (For the upper & Lower Bake, Lower CONv. Bake & Roast) 2. Press Start Time repeatedly until PrE Appears in the display BAKE 3.

  • Page 21: Warm (For Lower Oven Only)

    uSING yOuR RANGE 10. wARm (For Lower oven only) WARM START Lower oven 11. pROOF (For the Lower oven only) PROOF START 12. LOCkOuT 1. Lock : Press and Hold the Lower CLEAR/OFF for three seconds. 2. Lockout : Press and Hold the Lower CLEAR/OFF for three seconds.

  • Page 22: Component Access

    COmpONENT ACCESS This section instructs you on how to service each component inside the range. The components and their locations are shown below. COmpONENT LOCATIONS Surface Elements Upper Broil Heater Door Locking Motor & Micro Switch Oven Sensor Oven Light Upper Door Latch Upper Door Switch Assembly...

  • Page 23: Removing The Back Cover

    COmpONENT ACCESS REmOvING ThE BACk COvER 4. Remove the remaining 10 screws WARNING • DISCONNECT power supply cord from the outlet before servicing. • Replace all panels and parts before operating. • RECONNECT all grounding devices. - Failure to do so can result in severe personal injury, death or electrical shock.
  • Page 24 COmpONENT ACCESS REmOvING ThE OvEN RELAy pCB, pOwER pCB, pOwER RELAy 4. To remove the Oven Relay PCB, Disconnect 8ea connectors. WARNING • DISCONNECT power supply cord from the outlet before servicing. • Replace all panels and parts before operating. •...

  • Page 25: Removing The Controller

    COmpONENT ACCESS REmOvING ThE CONTROLLER 5. To remove the knob, Pull out the knob of range. WARNING • DISCONNECT power supply cord from the outlet before servicing. • Replace all panels and parts before operating. 6. Pull the controller from the range •...
  • Page 26 COmpONENT ACCESS REmOvING ThE mAIN pCB ANd kEy pCB ASSEmBLy 4. Controller wire should be held by the wire holding structure of controller WARNING assembly. • DISCONNECT power supply cord from the outlet before servicing. • Replace all panels and parts before operating. •...
  • Page 27 COmpONENT ACCESS 5. To remove the Key PCB assembly Remove the 7 screws of the Main PCB supporter. Buzzer PCB Encoder Touch Bridge Key PCB Wi-fi PCB REASSEMBLY NOTE : When you reinstall the Key PCB Assembly make sure that the upper brackets of it are inserted into the correct guide then reinstall the lower bracket screw.

  • Page 28: Removing Knob And Infinite Switch

    COmpONENT ACCESS REmOvING kNOB ANd INFINITE SwITCh c) Remove the 2 screw of Knob Housing WARNING d) Remove the 2 screw on the controller • DISCONNECT power supply cord from the outlet before servicing. • Replace all panels and parts before operating. •...
  • Page 29 COmpONENT ACCESS REmOvING ThE CERAmIC GLASS COOkTOp, ThE SuRFACE ELEmENT ANd ThE hOT SuRFACE LAmp c) Remove 2 connectors which connect controller harness with cooktop WARNING harness. • DISCONNECT power supply cord from the outlet Left Right before servicing. • Replace all panels and parts before operating. •...
  • Page 30 COmpONENT ACCESS d) Remove the 3 screws on the main duct from the cooling motor WARNING • DISCONNECT power supply cord from the outlet before servicing. • Replace all panels and parts before operating. • RECONNECT all grounding devices. - Failure to do so can result in severe personal injury, death or electrical shock.
  • Page 31 COmpONENT ACCESS e) Remove the door latch from the burner box and unhook the actuating 8. To remove the door switch rod. a) Disconnect the wires from the terminal b) Remove the door switch from the range. To do this, squeeze tabs and use a ratchet extension or a small socket, and tap it out of the hole with a hammer.

  • Page 32: Removing The Broil Element

    COmpONENT ACCESS REmOvING ThE BROIL ELEmENT 5. Release 2 hooks and remove 4 screws. WARNING 4 Screws • DISCONNECT power supply cord from the outlet before servicing. • Replace all panels and parts before operating. • RECONNECT all grounding devices. - Failure to do so can result in severe personal injury, death or electric shock.
  • Page 33 COmpONENT ACCESS 7. Remove 2 screws and heater cover (mesh). 8. Pull up the broil heater and remove from the Spring. Heater cover Broil heater 2 Screws Spring 3-12...

  • Page 34: Removing The Broil Element (For The Lower Oven)

    COmpONENT ACCESS REmOvING ThE BROIL ELEmENT (For the Lower oven) 5. To remove the broil element: WARNING a) Remove the 4 screws from the front and rear brackets. • DISCONNECT power supply cord from the outlet 2 Front bracket screws before servicing.

  • Page 35: Removing The Exposed Bake Element (For The Upper Oven Only)

    COmpONENT ACCESS REmOvING ThE ExpOSEd BAkE ELEmENT (For the upper oven only) 5. To remove the upper bake element: WARNING a) Remove the 2 screws from the rear bracket. • DISCONNECT power supply cord from the outlet 2 Screws before servicing. •...

  • Page 36: Removing The Convection Element, Fan Blade And Fan Motor (For The Lower Oven Only)

    COmpONENT ACCESS REmOvING ThE CONvECTION ELEmENT, FAN BLAdE ANd FAN mOTOR (For the Lower oven only) 1. Disconnect power and remove oven racks. CAUTION 2. Pull the range out of its mounting location so that you can access the rear of the unit. •...

  • Page 37: Removing The Oven Light & Socket Assembly (For Both The Upper & Lower Oven)

    COmpONENT ACCESS REmOvING ThE OvEN LIGhT & SOCkET ASSEmBLy (For both the upper & Lower oven) WARNING CAUTION • DISCONNECT power supply cord from the outlet • Be careful not to scratch or chip the oven liner before servicing. paint when you remove the oven light socket in •...

  • Page 38: Removing The Latch Drive Assembly (For Both The Upper & Lower Oven)

    COmpONENT ACCESS REmOvING ThE LATCh dRIvE ASSEmBLy (For both the upper & Lower oven) dOOR LOCkING mEChANISm WARNING The door lock assembly is located at the back side of range. • DISCONNECT power supply cord from the outlet The structural elements are as below. before servicing.

  • Page 39: Removing The Oven Temperature Sensors (For Both The Upper & Lower Oven Temperature Sensor)

    COmpONENT ACCESS REmOvING ThE OvEN TEmpERATuRE SENSORS (For both the upper & Lower oven temperature sensor) 1. Turn off the electrical supply going to the range. WARNING 2. Open the oven door and remove the racks from the oven. 3. Pull the range away from the wall so that you can access the rear panel. •...

  • Page 40: Removing & Replacing The Lift-Off Oven Door (For The Upper Door)

    COmpONENT ACCESS REmOvING & REpLACING ThE LIFT-OFF OvEN dOOR (For the upper door) 5. Lift the door up until it is clear of the hinges. CAUTION about 30° • Be careful when removing and lifting the door. • DO NOT lift the door by the handle. - The door is very heavy.

  • Page 41: Removing & Replacing The Lift-Off Oven Door (For The Lower Door)

    COmpONENT ACCESS REmOvING & REpLACING ThE LIFT-OFF OvEN dOOR (For the Lower door) To replace the door: CAUTION 1. Firmly grasp both sides of the door at the top. • Be careful when removing and lifting the door. 2. With the door at the same angle as the removal position, seat the indentation of the hinge arms into the bottom edge of the hinge slots.

  • Page 42: Removing The Upper Oven Door Handle & Glass (For The Upper Door)

    COmpONENT ACCESS REmOvING ThE uppER OvEN dOOR hANdLE & GLASS (For the upper door) 4. Remove the three bottom screws from the door liner. WARNING • DISCONNECT power supply cord from the outlet before servicing. • Replace all panels and parts before operating. •...
  • Page 43 COmpONENT ACCESS 7. To remove a hinge receptacle assembly and glass b) Remove the 2 handle bracket screws. a) Remove the 4 top liner screws b) Place the door liner assembly on a padded work surface with the hinge receptacles over the edge. c) Lift the hinge receptacle out of the door liner slot.

  • Page 44: Reassembly The Upper Door Glass & Hinge Receptacle (For The Upper Door)

    1. Insert one pane of glass in inner cover. (Glass position : Surface printed 1. Cover the inner cover with the door frame. with “단면LG” should be placed on bottom.) 2. Pull up the bottom of the hinge receptacle to align the hole with the hole in the frame, then insert and tighten the bottom screw.

  • Page 45: Removing The Oven Door Handle & Glass (For The Lower Door)

    COmpONENT ACCESS REmOvING ThE OvEN dOOR hANdLE & GLASS (For the Lower door) 4. Remove the 5 bottom screws from the door liner. WARNING • DISCONNECT power supply cord from the outlet before servicing. • Replace all panels and parts before operating. •...
  • Page 46 COmpONENT ACCESS 7. To remove the hinge hanger assembly and glass a) Place the door liner assembly on a padded work surface with door frame facing up. (same as Step 2) b) Remove the 2 bottom liner screws. c) Remove the 2 top liner screws. Door frame 2 top liner screws Hinge hangers assembly...

  • Page 47: Reassembling The Lower Door Glass & Hinge Hanger (For The Lower Door)

    COmpONENT ACCESS REASSEmBLING ThE LOwER dOOR GLASS & hINGE hANGER (For the Lower door) RESSEMBLY METHOD OF INNER DOOR GLASS : RESSEMBLY METHOD OF HINGE HANGER : 1. See steps 1-2 on page 3-25) 1. Cover the inner cover with door frame. 2.

  • Page 48: Removing The Oven Door Gasket (For The Upper & Lower Door Gaskets)

    COmpONENT ACCESS REmOvING ThE OvEN dOOR GASkET (For the upper & Lower door gaskets) WARNING Gasket clip • DISCONNECT power supply cord from the outlet before servicing. • Replace all panels and parts before operating. • RECONNECT all grounding devices. - Failure to do so can result in severe personal injury, death or 3.

  • Page 49: Removing A Side Panel

    COmpONENT ACCESS REmOvING A SIdE pANEL 6. Remove the screws from the left or right side panel. WARNING • DISCONNECT power supply cord from the outlet before servicing. • Replace all panels and parts before operating. • RECONNECT all grounding devices. - Failure to do so can result in severe personal injury, death or electrical shock.
  • Page 50 COmpONENT ACCESS 8. Pull the back of the side panel out from the range approximately 10˚. 9. Push forward and remove the side panel. 3-29...

  • Page 51: Component Test

    COmpONENT TEST Before testing any components, perform the following checks: WARNING NOTE: 1. The most common cause for control failure is corrosion on • Disconnect power supply cord from the outlet before connectors. servicing Therefore, disconnecting and reconnecting wires will be necessary throughout test procedures.

  • Page 52: Door Locking Motor

    Components Test procedures Results Door locking Motor 1. Refer to page 3-17 for the servicing procedure Normal: Approximately 2.6 kΩ ± 10% 2. Measure the resistance If not replace (Multiple meter scale: R x 1000) Abnormal: Infinite(open) below 5Ω (shorted) Micro Switch ON position (Unlock position) OFF position (Lock position)

  • Page 53: Door Switch

    Components Test procedures Results Door switch 1. Refer to page 3-10 for the servicing procedure Door open Door closed 2. Measure the resistance after cooling down (Multiple meter scale: R x 1) Continuity Infinite Oven lamp 1. Measure the resistance after cooling down Normal: Below 5 Ω.

  • Page 54: Upper Oven Bake Heater

    Components Test procedures Results Upper oven Bake heater 1. Remove wire leads Normal : Approximately 24 Ω 2. Measure resistance after cooling down Abnomal : Infinite(opened) NOTE: Ω Value was tested at room temperature (77˚F/25˚C) Be careful the element is sensitive to temperature. Lower oven Broil heater 1.

  • Page 55: Infinite Switch (Single Units): Lr Switch Rr Switch Cr Switch

    Components Test procedures Results Infinite switch (Single units): 1. Refer to page 3-7 for the servicing procedure. LR switch 2. Set the Multiple meter scale to the R x 1000. RR switch 3. Disconnect all wires from infinite switch. CR switch 4.
  • Page 56 Components Test procedures Results Infinite switch (Double 1. Refer to page 3-7 for the servicing procedure. units): 2. Set the Multiple meter scale to the R x 1000. LF switch 3. Disconnect all wires from infinite switch. 4. Push in and turn left knob to check the single type. 5.

  • Page 57: Infinite Switch (Double Units): Lf Switch

    Components Test procedures Results Infinite switch (Double 7. When turn on/turn off the knob, position measure the units): resistance between S1 to S2 LF switch 8. After check the single type, check the dual type at the same procedure. Infinite Switch Knob Position Results P1 - 2...

  • Page 58: Infinite Switch (Triple Units): Rf Switch

    Components Test procedures Results Infinite switch (Triple units): 1. Refer to page 3-7 for the servicing procedure. RF switch 2. Set the Multiple meter scale to the R x 1000. 3. Disconnect all wires from infinite switch. 4. Push in and turn left knob to check the single type. 5.
  • Page 59 Components Test procedures Results Infinite switch (Triple units): 7. When turn on/turn off the knob, position measure the resistance RF switch between S1 to S2 8. When turn on/turn off the knob, position measure the resistance between P2 to 4b 9.

  • Page 60: Variable Thermostat : Lower Oven Switch

    Components Test procedures Results Variable Thermostat : 1. Refer to page 3-7 for the servicing procedure. NOTE: Ω Value was tested at room temperature Lower oven switch 2. Set the Multiple meter scale to the R x 1000. (75F/24˚C) 3. Disconnect all wires from Variable Thermostat 4.

  • Page 61: Single Surface Units: Left Rear (Lr) And Right Rear(Rr) Element

    terminal terminal Components Test procedures Results 1. Refer to page 3-8 for the servicing procedure Single surface units: Left Rear (LR) and 2. Set the Multiple meter scale to the R x 1 Right Rear(RR) Element 3. Disconnect wires from cook-top elements 4.
  • Page 62 Components Test procedures Results 1. Refer to page 3-8 for the servicing procedure Center Rear(CR) Element : Warming Zone (Plane 2. Set the Multiple meter scale to the R x 1 Heater) 3. Disconnect wires from cook-top elements 4. Touch the ohmmeter test leads to the element terminal E1 and The meter should indicate 570Ω...

  • Page 63: Dual Surface Units: Left Front(Lf) Element

    Components Test procedures Results 1. Refer to page 3-8 for the servicing procedure Dual surface units: Left Front(LF) Element 2. Set the Multiple meter scale to the R x1 3. Disconnect wires from cook-top elements 4. Touch the ohmmeter test leads to the (E1 & 1A) and (E2 & 1A) the meter should indicate : - (E1 &...

  • Page 64: Triple Surface Unit: Right Front(Rf) Element

    Components Test procedures Results 1. Refer to page 3-8 for the servicing procedure Triple surface unit: Right Front(RF) Element 2. Set the Multiple meter scale to the R x 1 3. Disconnect wires from cook-top elements 4. Touch the ohmmeter test leads to the (E1 & 1A) and (E2 & 1A) and (E3 &...
  • Page 65 Components Test procedures Results 6. Touch the ohmmeter test leads to limiter terminals 1B and 2B. Triple surface unit: Right Front(RF) Element With the temperature below 150 ˚F, the meter should indicate an open circuit(infinite). With the temperature above 150 ˚F, the meter should indicate continuity (0Ω).

  • Page 66: Schematic Diagram

    SChEmATIC dIAGRAm WARNING NOTE: Schematic diagram shows POWER MUST BE DISCONNECTED BEFORE SERVICING THE APPLIANCE. oven door opened and FAILURE TO DO SO CAN RESULT IN DEATH OR ELECTRICAL SHOCK. unlocked.All elements are set to “OFF”.

  • Page 67: Lower Bake/Conv. Bake/Conv. Roast

    STRIp CIRCuITS Complete the following steps before checking electric oven circuit : 1.Check the line voltage, household fuse or circuit breaker. 2.Check for loose wiring or mis-wiring within electric range. NOTE: The following individual circuits are for use in diagnosis, and are shown in the ON position. Lower BAKE/CONV.

  • Page 68: Lower Selfclean

    Lower Selfclean Oven Lamp Bridge Cook-top Element CR Cook-top Element...

  • Page 69: Rr Cook-Top Element

    RR Cook-top Element Upper BROIL/EASY Clean RF Cook-top Element Lower Broil...

  • Page 70: Upper Bake/Warm

    Upper BAKE/WARM Clock Display On...

  • Page 71: Composition Of Control

    COmpOSITION OF CONTROL wiring diagram...
  • Page 72 COmpOSITION OF CONTROL Composition of control Front Back main pCB Relay pCB SmpS pCB Touch pCB (p/N : EBR81445903) (p/N : EBR80595411) (p/N : EBR80595701) (p/N : EBR82864102) Encoder pCB Buzzer pCB wi-Fi pCB metal Touch System pCB (p/N : EBR80327001) (p/N : EBR76332902) (p/N : EBR82056903) (p/N : EBR82864201)

  • Page 73: Main Pcb

    COmpOSITION OF CONTROL main pCB (p/N : EBR81445903) CN52 CN21 CN64 CN53 CN63 CN40 CN51 CN60 CN50 CN41 CN61 CN03...

  • Page 74: Oven Relay Pcb

    COmpOSITION OF CONTROL Oven Relay pCB (p/N : EBR80595411) CN53 CN51 CN52...

  • Page 75: Smps Pcb

    COmpOSITION OF CONTROL SmpS pCB ( p/N : EBR80595701) CN02 CN01 Touch pCB ( p/N : EBR82864102)

  • Page 76: Encoder Pcb

    COmpOSITION OF CONTROL Encoder pCB Buzzer pCB ( p/N : EBR80327001) ( p/N : EBR76332902) CN41 CON1 wi-Fi pCB metal Touch System pCB ( p/N : EBR82056903) ( p/N : EBR82864201...

  • Page 77: Service Test Mode

    SERvICE TEST mOdE Sequence of SvC Test mode To enter the test mode, follow these steps: (4) Select the “t0” by press the + button. (1) Press the Upper or Lower CLEAR/OFF key. (2) Press the button in the following order : + →...
  • Page 78 SERvICE TEST mOdE Current inspecting Relay’s information is displayed (6) Start the test by press the START button again. ● Active Load Icon ● Software Version (7) Whenever you input the START button, the relay operation sequence should be as seen below. ※...
  • Page 79 SERvICE TEST mOdE BASIC ChECk SummARy Symtom : Door lock fail Symtom : Oven lamp not opertating Symtom : Seonsor error or no heating Symtom : Oven hot Symtom : no heating Symtom : Shorted probe sensor...

  • Page 80: Troubleshooting

    TROuBLEShOOTING ChECk ThE FAILuRE COdE ■ When the oven has a malfunction while cooking, If the oven does not have any failure, the Oven will look Cooking will be canceled and log data of F-code will be like FIG. 2 recorded in EEPROM.

  • Page 81: Failure Code Summary

    TROuBLEShOOTING FAILuRE COdE SummARy Code Description explanation Check point F1 (Upper) 1.Wiring Sensor open Oven Thermistor is open F4 (Lower) 2.Oven Sensor F2 (Upper) Sensor short 1.Wiring Oven Thermistor is shorted. F5 (Lower) 2.Oven Sensor 1. If ‘25 key short’ occurred 3 times in 90 seconds. 1.Wiring Key short 2.

  • Page 82: Checking Flow Chart By Failure

    TROuBLEShOOTING ChECkING FLOw ChART By FAILuRE Symptom Check point 1. Power Failure (Dead) 1. Check Electrical Wiring 2. No Display 2. Check the SMPS PCB Input Voltage with CN01 CN03 CN02 CN01 Main PCB CN03 Pin No. Voltage Vf(4.3V) -33V CN02 Thermostat CN01...

  • Page 83: Power Failed (Dead), No Display

    TROuBLEShOOTING Power Failed (Dead), No display? Check the AC input of SMPS PCB. Go to 7 Plug the unit (On the next Page) - SMPS PCB CN01 (Pin 1 and 3) Check the button beep. 120V AC? Touch the Clear button, Replace the Main PCB Can hear the beep sound? Reconnect.
  • Page 84 TROuBLEShOOTING Check the connecting states Replace the Main PCB between CN02 of SMPS PCB and CN03 of Main PCB. Is it OK? Reconnect. If defective harness, replace or fix. If the same phenomenon occurs even though after fixed connection, you should replace the Main PCB...
  • Page 85 TROuBLEShOOTING Symptom Check point 1. No heating 1.Check Electrical Wiring 2. F9, F19 2.Check Heater’s Resistance. 3.Check the Sensor. Ⓐ Ⓓ Ⓔ Ⓑ Bake Heater (Upper) Ⓒ Broil Heater (Upper) Ⓖ Ⓘ Ⓙ Ⓕ RY11 RY13 Conv. Heater (Lower) Ⓗ RY12 Broil Heater...
  • Page 86 TROuBLEShOOTING Symptom Check point 1. No heating 1.Check Electrical Wiring 2. F9, F19 2.Check Heater’s Resistance. 3.Check the Sensor. CN61 CN60...

  • Page 87: Oven Does Not Heat, F9, F19

    TROuBLEShOOTING Oven does NOT heat, F9, F19 Is the connection of heater normal? Replace the Failed heater Measure the resistance of each heater. Unplug the unit (The resistance is shown below) Reconnect. Is the Connector disconnected or loose? If defective harness, (1) Between Main PCB and Relay PCB (CN51) Replace or fix (2) Electric wiring of relay PCB All taps.
  • Page 88 TROuBLEShOOTING Unplug the unit Range Of resistance Resistance[Ω] Heater Approximately Is the resistance of thermistor normal? Replace the defective Upper Broil Thermistor Check: Upper Bake Conv. Heater Pins 4 and 5 of CN60 and pins 5 and 6 of CN61 in main PCB Lower Broil 14.7...
  • Page 89 TROuBLEShOOTING Symptom Check point 1. Door Lock System Failure 1. Check the Electrical wiring 2. F10, F20 2. Check the Motor’s Resistance 3. Check the Relay PCB (Door Lock Relay) CN60 CN61 8-10...
  • Page 90 TROuBLEShOOTING Symptom Check point 1. Door Lock System Failure 1. Check the Electrical wiring 2. F10, F20 2. Check the Motor’s Resistance 3. Check the Relay PCB (Door Lock Relay) 8-11...

  • Page 91: Door Lock System Failure,F10 Or F20

    TROuBLEShOOTING Unplug the unit Door Lock System Failure,F10 or F20 ? Reconnect. Plug in the unit Is the Connector disconnected or loose? If defective harness, Check the following: replace or fix Note : (1) Between Main PCB and Relay PCB (CN51) (2) Electric wiring CN52 and CN53 of relay Just after self-clean start, the door lock motor starts to rotate.
  • Page 92 TROuBLEShOOTING Replace the Replace the Is the door lock switch (micro switch) Is the resistance of the lock motor micro switch lock motor normal? normal ? measure the resistance of door lock measure the resistance of lock motor switch T normally open type Normal : approximately 2.6kΩ...
  • Page 93 TROuBLEShOOTING Symptom Check point 1. Sensing Fail 1. Check the Electric Wiring 2. F1, F4 2. Check the Test Mode 3. F2, F5 3. Check the Sensor’s Resistance CN61 CN60 8-14...

  • Page 94: Sensing Fail, F1 (F4), F2 (F5)

    TROuBLEShOOTING Sensing Fail, F1 (F4), F2 (F5)? Replace the defective Is the resistance of thermistor normal? Thermistor Unplug the unit Check: Pins 4 and 5 of CN60 and pins 5 and 6 of CN61 Reconnect or adjust the Is the Connector disconnected or loose? in main PCB connection Normal- approximately 1.09kΩ...
  • Page 95 TROuBLEShOOTING Is the value of thermistor normal? Go to No 1 (Refer below) Check with the test mode To enter the test mode, follow these steps: (1) Press the Upper or Lower CLEAR/OFF key. (2) Press the button in the following order : + →...

  • Page 96: Oven Hot, F6, F16

    TROuBLEShOOTING Symptom Check point 1. Oven hot 1. Check the Resistance of the Relay. 2. F6, F16 2. Check the Sensor’s Resistance Ⓐ Ⓑ Ⓓ Ⓔ Bake Heater (Upper) Ⓒ Broil Heater (Upper) Ⓖ Ⓘ Ⓙ Ⓕ RY13 RY11 Conv. Heater (Lower) Ⓗ...
  • Page 97 TROuBLEShOOTING Symptom Check point 1. Oven hot 1. Check the Resistance of the Relay. 2. F6, F16 2. Check the Sensor’s Resistance CN61 CN60 8-18...
  • Page 98 TROuBLEShOOTING Oven hot, F6, F16? Is the Heater relay normal? Replace the Relay PCB Unplug the unit Measure the resistance of heater relay and L. Normal: infinite Abnormal : shorted Replace the defective Is the resistance of thermistor normal? Thermistor Check: Pins 4 and 5 of CN60 and pins 5 and 6 of CN61 in Upper Broil...
  • Page 99 TROuBLEShOOTING Is the DLB relay normal? Is the value of thermistor normal? Replace the Relay PCB Replace the Main PCB Measure the resistance (Refer below) Check with the test mode Normal: infinite To enter the test mode, follow these steps: Abnormal : shorted (1) Press the Upper or Lower CLEAR/OFF key.
  • Page 100 TROuBLEShOOTING Symptom Check point 1. Key not working 1. Check the Door Locking System. 2. F3 Error 2. Check the Electric Wiring. CN53 8-21...

  • Page 101: F3 Error (Button Short Error) Or Button Does Not Input

    TROuBLEShOOTING Plug in the unit F3 error (Button short error) Or button does not input Replace the Control panel. (With Glass Touch PCB) Unplug the unit And then check button operation using key test mode Reconnect or adjust the Check the connecting states (1) Press the Upper or Lower CLEAR/OFF key.

  • Page 102: Key Operation Test Sequence

    TROuBLEShOOTING kEy OpERATION TEST SEquENCE ※ How to check button operation 1. Keys should be accessed according to the above sequence and check the beep sound when key is accessed If Key is the normal operation will be the number that corresponds to the Key displayed on the 2.

  • Page 103: Exploded View

    #EV# ExpLOdEd vIEw INTRODUCTION MODEL: Customer Model Product Code SVC Model CONTROLLER PARTS 9506 9504 W229 9381 5080 5532 8511 9381 W229...
  • Page 104 #EV# UPPER DOOR PARTS 102S W243 170L 1000 102L 173U 1008 1020 1015 173U 1021 1035 1009 W222 102S 1801 1035 170R...
  • Page 105 #EV# LOWER DOOR PARTS 1801 102U 173L W243 1100 102L W222 1018 1120 1704 1115 1041 1009 W222 W101 W101 1704 173L 102L 102U...
  • Page 106 #EV# CONTROLLER PARTS 5206 2402 2001 2053 260K 2015 2006 2054 2002 2374 260B 208C 244D 2037 2090 2050 208C 208C 208C 244P 208C 244C 244P 244P 208C 244T...
  • Page 107 #EV# COOKTOP PARTS 3056 330M 3215 3204 3204 3022 3079 3204 330H 3014 330S 3204 3204 3016 5700...
  • Page 108 #EV# UPPER CAVITY PARTS 5537 5501 5063 5502 5539 5504 3006 5016 546L 5511 3205 5535 3099 4002 3208 5078 5006 W222 5504 W291 5019 W291 5515 5021 546R 5078 5516 W291 5535 5541 W222 3032 3207 3901 5032 3206 3130 3222 W291...
  • Page 109 #EV# LOWER CAVITY PARTS 5014 3057 5019 5510 5508 5518 5511 5517 3090 5037 5409 5502 3031 W291 5016 5039 5501 5531 5509 3063 5063 W129 5405 5512 4002 5408 5505 5521 W291 5401 5503 5021 5407 5406 5516 5505 5073 5512 W230...

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