LG LUTG4519SN Service Manual
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LG LUTG4519SN Service Manual

Slide-in gas double range
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30" Slide-In Gas Double Range
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
MODEL:
LUTG4519SN
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
P/NO.: MFL37118384
February,2017
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 Gas Double Range” provides the technician with information on the operation and service of the Slide-In Self Cleaning Gas 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 ~ 1-7 •...

  • Page 4: General

    GENERAL (Page) COMPONENT ACCESS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3-1 ~ 3-34 •...
  • Page 5 GENERAL (Page) CONVERSION TO LP GAS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5-1 ~ 5-5 COMPOSITION OF CONTROL - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6-1 ~ 6-6 SVC TEST MODE - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7-1 ~ 7-3 TROUBLESHOOTING - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 8-1 ~ 8-25...

  • Page 6: Important Safety Instructions

    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 GENERAL IMPORTANT SAFETY INSTRUCTIONS CAUTION • Use caution when handling the sheet metal part while serviching the range. - Some part may have sharp eddge, which could result injury. • Be careful not to bend the fan blade - Doing so can result in vibration, noise, and poor performance of convection when operating. •...
  • 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 touch burners, grates or interior surfaces of oven. All other servicing should be referred to a qualified technician.
  • Page 9 GENERAL 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 (On Upper Rear Cover) -1-5-...

  • Page 11: Specifications

    GENERAL SPECIFICATIONS Model Number LUTG4519SN 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 (7 categories) 1. Change hour mode on Clock 2.
  • Page 12 GENERAL SPECIFICATIONS Model Number LUTG4519SN Oven Capacity(cu.ft) 2.6cu.ft(Upper)/4.3cu.ft(Lower) Broil element 14.5k / 12.5k Bake element 14.5k / 12.5k Convection System 14k / 12k Convection element No(Upper) / Yes(Lower) # of Racks 2(Upper)/4(Lower) Interior oven light 1(Upper)/1(Lower) Proof Yes(Lower) warm Yes(Lower)

  • Page 13: Using Your Range

    USING YOUR RANGE GENERAL INFORMATION Rating Label Lower Oven Convection Bake / Roast Mode(For the Lower oven only) Model numbers are recorded on the rating label. Before ordering parts, Convection bake should be used for cooking casseroles and roasting write down the correct model and serial number from rating label. This meats.

  • Page 14: Control Panel Features

    USING YOUR RANGE CONTROL PANEL FEATURES A. LEFT FRONT CONTROL KNOB: Use to control Left Front Burner E. RIGHT FRONT CONTROL KNOB: Use to control Right Front Burner B. LEFT REAR CONTROL KNOB : Use to control Left Rear Burner F.
  • Page 15 USING YOUR RANGE CONTROL PANEL FEATURES  - /+  Smart Diagnosis Use during the Smart Diagnosis feature. Press the plus button to increase cooking time or oven temperature.  Cook Time / Clock Press the minus button to decrease cooking time or oven temperature. •...

  • Page 16: To Turn On On The Surface Burners

    USING YOUR RANGE GENERAL 1. TO TURN ON THE SURFACE BURNER 3 START, CLEAR OFF (FOR BOTH THE UPPER & LOwER OvEN) 1. Be sure all the surface burners are placed in their respective positions. 1. Press START button to start oven. 2.

  • Page 17: Broil (For The Upper Oven Only)

    USING YOUR RANGE 3) Adjusting the Oven Temperature 3. Press plus(+) or minus(-) to select ℉(Fahrenheit) or The oven temperature can be adjusted from -35°F (-19°C) to 35°F ℃(Centigrade). (19°C). 4. Press Start to accept the change. 7. TIMED COOK, DELAYED TIMED COOK Note: The thermostat adjustments made with this feature will just change Bake, (For the Upper &...

  • Page 18: Warm (For Both Upper & Lower Oven)

    USING YOUR RANGE 11.wARM(For Lower oven only) WARM START Lower oven 12. PROOF(For the Lower oven only) PROOF START 13. 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 19: 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. Door Locking Motor & Micro Switch Oven Light Burner Body Broil Burner Igniter(Broil) Pipe Spark module Upper Broil Heater Upper Door Switch Door Locking Motor Lower Door Latch...

  • Page 20: 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 21: Removing The Oven Relay Pcb, Power Pcb, Power Relay

    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 22: 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. • RECONNECT all grounding devices. 6.

  • Page 23: Removing The Main Pcb And Key Pcb Assembly

    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 24 COMPONENT ACCESS 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. -3-6-...

  • Page 25: Removing The Cooktop Plate

    COMPONENT ACCESS REMOVING THE COOKTOP PLATE 5. Remove the vent bracket 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 26: Removing The Cooling Fan

    COMPONENT ACCESS REMOVING THE COOLING FAN 7. You can find cooling fan. Please be assembled with a screws 3(EA) the WARNING cooling fan. • DISCONNECT power supply cord from the outlet before servicing. • Replace all panels and parts before operating. •...

  • Page 27: Removing The Cooktop Parts

    COMPONENT ACCESS REMOVING THE COOKTOP PARTS d) Remove the valve screw and remove the valve. WARNING • DISCONNECT power supply cord from the outlet before servicing. • Replace all panels and parts before operating. • RECONNECT all grounding devices. Fitting - Failure to do so can result in severe personal injury, death or electrical shock.
  • Page 28 COMPONENT ACCESS 5. To remove the ignition switch: a) remove the back cover, cooktop plate and manifold panel (see page 3-2, 3-4 and 3-7 for the procedure). b) Pry on the 2 release tabs and slide the switch off the valve stem. c) Remove the 2 connectors and remove the ignition switch.

  • Page 29: Removing The Door Latch & Upper Door Switch(For The Upper Oven Only)

    COMPONENT ACCESS REMOVING THE DOOR LATCH & UPPER DOOR SWITCH(For the Upper oven only) 7. To remove the upper door latch: WARNING a) Remove the 2 screws from the upper door latch and remove the latch. • DISCONNECT power supply cord from the outlet before servicing.
  • Page 30 COMPONENT ACCESS 8. To remove the upper door switch: a) If not already done, remove the back cover, cooktop plate, manifold panel and cooling fan(see page 3-2, 3-4, 3-6 and 3-8 for the procedure). b) Remove the upper case. c) Remove the upper 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 31: Removing The Door Latch & Lower Door Switch(For The Lower Oven Only)

    COMPONENT ACCESS REMOVING THE DOOR LATCH & LOWER DOOR SWITCH(For the Lower oven only) a) Remove 2 screws to widen the space between Upper & Lower WARNING cavities. • DISCONNECT power supply cord from the outlet before servicing. • Replace all panels and parts before operating. •...
  • Page 32 COMPONENT ACCESS e) Remove 2 screws to replace the lower latch. c) Remove the lower 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. Door Switch 2 Screws f) Pull out the Lower latch from the bar.

  • Page 33: Removing The Broil Burner Assembly(For The Upper Oven Only)

    COMPONENT ACCESS REMOVING THE BROIL BURNER ASSEMBLY(For the Upper oven only) 5. To remove the broil burner assembly: WARNING a) Remove the back cover by removing the screw. b) Remove the 3 screws in the order for easily removing. • DISCONNECT power supply cord from the outlet c) Remove 1 screw from the igniter bracket.

  • Page 34: Oven Bottom, The Frame Guide And The Upper Bake Burner Assembly(For The Upper Oven Only)

    COMPONENT ACCESS OVEN BOTTOM, THE FRAME GUIDE AND THE UPPER BAKE BURNER ASSEMBLY (For the Upper oven only) 1. Turn off the electrical supply and gas supply going to the range. 2. Remove the upper oven door and racks from inside of the oven. 3.

  • Page 35: Lower Bake Burner Assembly (For The Lower Oven Only)

    COMPONENT ACCESS LOWER BAKE BURNER ASSEMBLY (For the Lower oven only) 1. Turn off the electrical supply and gas supply going to the range. 5. Remove the screw from nozzle holder of the back side. 2. Remove the lower door.(see page 3-24 for the procedure) 3.

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

    COMPONENT ACCESS REMOVING THE CONVECTION FAN BLADE AND FAN MOTOR (For the Lower oven only) 1. Remove the burner cover U.(See step 1~4 on page 3-17) 3. To remove the fan motor assembly : 2. To remove the fan blade : a) Pull the range out of its mounting location so that you can access the rear of the unit.
  • Page 37 COMPONENT ACCESS REMOVING THE OVEN LIGHT & SOCKET ASSEMBLY WARNING CAUTION • DISCONNECT power supply cord from the outlet • Be careful not to scratch or chip the oven liner paint before servicing. when you remove the oven light socket in the next •...

  • Page 38: Removing The Door Lock Assembly(For The Upper Oven Only)

    COMPONENT ACCESS REMOVING THE DOOR LOCK ASSEMBLY(FOR THE UPPER OVEN ONLY) 6. Unhook the Latch rod from the cam. WARNING DOOR LOCKING MECHANISM • DISCONNECT power supply cord from the outlet The door lock assembly is located at the back side of range. before servicing.

  • Page 39: Removing The Door Lock Assembly (For The Lower Oven Only)

    COMPONENT ACCESS REMOVING THE DOOR LOCK ASSEMBLY (FOR THE LOWER OVEN ONLY) 6. Unhook the Latch rod from the cam. 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 40 COMPONENT ACCESS REMOVING THE OVEN TEMPERATURE SENSORS (FOR BOTH UPPER & LOWER OVEN) 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 41: 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. WARNING about 30° • Be careful when removing and lifting the door. • DO NOT lift the door by the handle. - The door is very heavy.

  • Page 42: 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: WARNING 1. Firmly grasp both sides of the door at the top. • Be careful when removing and lifting the door. • DO NOT lift the door by the handle. 2.

  • Page 43: Removing The Upper Oven Door Handle & Glass (For The Upper Door)

    COMPONENT ACCESS REMOVING THE UPPER OVEN DOOR HANDLE & GLASS (For the Upper door) 6. To remove the door handle WARNING a) Remove 2 screws from air guide. • DISCONNECT power supply cord from the outlet 2 Screw before servicing. •...
  • Page 44 COMPONENT ACCESS c) Complete to remove the door handle. d) Lift the inner glass and bracket out of the inner cover. Inner cover 7. To remove a hinge receptacle assembly and glass a) Remove the 4 top liner screws (See step 3 on page 2-25) b) Place the door liner assembly on a padded work surface with the hinge receptacles over the edge.

  • Page 45: Reassembling The Upper Door Glass & Hinge Receptacle (For The Upper Door)

    1. Insert one pane of glass in inner cover. 1. Cover the inner cover with the door frame. (Glass position : Surface printed 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 46: 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 47 COMPONENT ACCESS d) Lift the door frame out of the inner cover. e) Remove the hinge hanger assembly and lift the inner glass and bracket out of the inner cover. Inner cover Inner oven door glass and bracket -3-29-...

  • Page 48: Reassembling The Door Glass & Hinge Hanger(For The Lower Door)

    COMPONENT ACCESS REASSEMBLING THE DOOR GLASS & HINGE HANGER(FOR THE LOwER DOOR) REASSEMBLY METHOD OF INNER DOOR GLASS : REASSEMBLY METHOD OF HINGE HANGER : 1. See steps 1-2 on page 3-29) 1. Cover the inner assembly into the door frame. 2.

  • Page 49: Removing The Oven Door Gasket

    COMPONENT ACCESS REMOVING THE OVEN DOOR GASKET Gasket clip 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 3.

  • Page 50: 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 51 COMPONENT ACCESS 8. Pull the back of the side panel out from the range approximately 10˚. 9. Push forward and remove the side panel. -3-33-...

  • Page 52: Remove The Oven Valve (Safety Valve) & Gas Pressure Regulator

    COMPONENT ACCESS REMOVE THE OVEN VALVE (SAFETY VALVE) & GAS PRESSURE REGULATOR c) Remove 4 connectors. WARNING d) Remove 2 screws and than lift the oven valve. • DISCONNECT power supply cord from the outlet 4. To remove the Gas pressure regulator. before servicing.

  • Page 53: Component Test

    COMPONENT TEST Before testing any components, perform the following checks: 3. Resistance checks must be made with power cord unplugged from NOTE: outlet, and with wiring harness or connectors disconnected. 1. The most common cause for control failure is corrosion on connectors.

  • Page 54: Door Locking Motor

    COMPONENTS TEST PROCEDURE RESULTS Door locking Motor 1. Refer to page 3-13 for the servicing procedure Normal: Approximately 2. Measure the resistance after cooling down 2.6 kΩ ± 10% (Multiple meter scale: R x 1000) If not replace Abnormal: Infinite(open) below 5Ω...

  • Page 55: Door Switch

    COMPONENTS TEST PROCEDURE RESULTS Door switch 1. 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: Approximately 25.7 Ω ± 10% If not replace (Multiple meter scale: R x1) Igniter Type-1 1.

  • Page 56: Oven (Safety) Valve

    COMPONENTS TEST PROCEDURE RESULTS Oven (safety) valve 1. Refer to page 3-34 for servicing procedure. Normal: Approximately 1 ~ 3 Ω 2. Measure the resistance after cooling down.(Multiple meter scale If not replace : R x 1) Ignition switch 1. Refer to pages 3-9, 3-10 for servicing procedure. approximately other 40°...

  • Page 57: Conversion To Lp Gas

    MODEL BTU RATE ORIFICE CODE This range leaves the factory set for use with natural gas. When LUTG4519SN BURNER converting to LP gas, keep these instructions in case you need to convert 10,000 back to natural gas. And save the orifices removed from the appliance for 9,100 future use.
  • Page 58 CONVERSION TO LP GAS ※ CONVERSION POINT ※ Orifice Locations for LP Gas ④ 1. Regulator [LUTG4519SN] 2. Bake burners 3. Broil Burner 4. Surface burners ③ ② ① -5-2-...
  • Page 59 CONVERSION TO LP GAS CONVERTING FOR LP SEALED BURNER 30” GAS RANGE 1. CONVERT REGULATOR GETTING STARTED WARNING Do not remove the pressure regulator from the range. 1. PREPARE RANGE FOR CONVERSION 1) Turn off gas supply to the range. 2) Turn off the electrical power to the range.
  • Page 60 CONVERSION TO LP GAS 2. CONVERT BAKE BURNER ORIFICES 1) Remove oven door, oven bottom, frame guide, oven burner assembly. OVEN LOWER BURNER (BAKE) 2) Remove the orifice spud from nozzle holder using a 13/32” or 10 mm wrench. ① 3) Install the LP orifice spud (F) to the nozzle holder.
  • Page 61 CONVERSION TO LP GAS 4. CONVERT SURFACE BURNERS Burner cap Set Screw Choke VENT TRIM BURNER CAP GRATE REAR COVER Burner base BURNER HEAD Fig.1 VENT TRIM 6) Put the old orifice spuds into conversion kits and place back on the range for possible future conversion.
  • Page 62 CONVERSION TO LP GAS NOTE: When converting the unit back to natural gas the upper bake 8. ADJUST SURFACE BURNER LOW FLAME (SIMMER) SETTING burner’s air shutter should also be fully open. 1) Light all surface burners. 2) Turn the knob on the burner being adjusted to LO. To adjust the air shutter on the broil burner for LP gas, loosen the 3) Remove knob.

  • Page 63: Composition Of Control

    COMPOSITION OF CONTROL Wiring Diagram -6-1-...
  • Page 64 COMPOSITION OF CONTROL Composition of control Back Front Main PCB Relay PCB SMPS PCB Touch PCB ( P/N : EBR81445904) ( P/N : EBR80595412) ( 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)
  • Page 65 COMPOSITION OF CONTROL Main PCB ( P/N : EBR81445904) CN52 CN21 CN64 CN53 CN63 CN51 CN40 CN60 CN50 CN41 CN61 CN03 -6-3-...
  • Page 66 COMPOSITION OF CONTROL Oven Relay PCB ( P/N : EBR80595412) CN53 CN51 CN52 -6-4-...
  • Page 67 COMPOSITION OF CONTROL SMPS PCB ( P/N : EBR80595701) CN02 CN01 Touch PCB ( P/N : EBR82864102) -6-5-...
  • Page 68 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 -6-6-...

  • Page 69: Svc Test Mode

    SVC TEST MODE 1 Sequence of SVC Test Mode (4) Select the “t0” by press the + button. 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 70 SVC TEST MODE (7) Whenever you input the START button, the relay (6) Start the test by press the START button again. operation sequence should be as seen below. ●Active Load Icon ●Software Version ※ Relay Operation Sequence RY 4 RY 3 RY 5 RY 6 RY 7 RY 10...
  • Page 71 SvC TEST MODE 2 Basic Check Summary Symptom : Symptom : Oven hot(F6, F16) no heating(F9, F19) -. Check: All heater relays are -. Check : All heater relays open/shorted and DLB relay are open Symptom : Sensor error or no heating (F1,F2,F9, F19) -.
  • Page 72 TROUBLESHOOTING GENERAL 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 73: Troubleshooting

    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 74: Checking Flow Chart By Failure

    TROUBLESHOOTING CHECKING FLOw CHART BY FAILURE Symptom Check Point 1. Power Failure 1. Check Electrical Wiring (Dead) 2. Check the SMPS PCB Input Voltage with CN01 2. No Display CN03 CN01 CN02 Main PCB CN03 Pin No. Voltage Vf(4.3V) -33V CN02 Thermostat CN01...

  • Page 75: Power Failed(Dead), No Display

    TROUBLESHOOTING GENERAL 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) 120V AC? Check the button beep. Touch the Clear button, Replace the Main PCB Can hear the beep sound? Reconnect.
  • Page 76 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 -8-5-...
  • Page 77 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) Ⓖ Ⓘ Ⓙ Ⓕ RY13 RY11 Conv. Heater (Lower) Ⓗ RY12 Broil Heater...

  • Page 78: No Heating, F9

    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 -8-7-...
  • Page 79 TROUBLESHOOTING Oven does NOT heat, F9, F19 Replace the Failed Is the connection of heater normal? heater Unplug the unit Measure the resistance of each heater. (The resistance is shown below) Reconnect. Is the Connector disconnected or loose? If defective harness, (1) Between Main PCB and Relay PCB Replace or fix (CN51)
  • Page 80 TROUBLESHOOTING Unplugged the unit Range Of resistance Heater Resistance[Ω] Approximately Upper Broil Is the resistance of thermistor normal? Replace the defected Upper Bake Themistor Conv. Heater Check: Pins 4 and 5 of CN60 and pins 5 and 6 of Lower Broil 14.7 CN61 in main PCB Normal- approximately 1.09kΩ...
  • Page 81 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 82 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 83: Door Lock System Failure, F10, F20

    TROUBLESHOOTING Door Lock System Failure,F10 or F20 ? Reconnect. Is the Connector disconnected or loose? If defective harness, Unplug the unit replace or fix Check the following: Note : (1) Between Main PCB and Relay PCB (CN51) Just after self-clean start, the door lock motor starts (2) Electric wiring CN52 and CN53 of relay PCB to rotate.
  • Page 84 TROUBLESHOOTING Is the door lock switch (micro switch) Is the resistance of the lock motor Replace the micro Replace the lock motor normal? normal ? switch measure the resistance of lock motor Normal : approximately 2.6kΩ measure the resistance of door lock switch T normally open type Abnormal : infinite or below 5 Ω...
  • Page 85 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 86: Sensing Fail, F1, F2, F2, F5

    TROUBLESHOOTING Sensing Fail, F1 (F4), F2 (F5)? Is the resistance of thermistor normal? Replace the defective Unplug the unit Thermistor Check: Pins 4 and 5 of CN60 and pins 5 and 6 of CN61 in main PCB Normal- Is the Connector disconnected or loose? Yes Reconnect or adjust the approximately 1.09kΩ...
  • Page 87 TROUBLESHOOTING Is the value of thermistor normal? (Refer below) Go to No 1 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 : + → - → Upper CLEAR/OFF(Upper CLEAR/OFF hold for 3 seconds) (3) Press the START/Oven Light button again.
  • Page 88 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 89: 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 CN61 CN60 -8-18-...
  • Page 90 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 Is the resistance of thermistor normal? Replace the defective Thermistor Check: Upper Broil Pins 4 and 5 of CN60 and pins 5 and 6...
  • Page 91 TROUBLESHOOTING Is the value of thermistor normal? Replace the (Refer below) Relay PCB Is the DLB relay normal? Replace the Relay PCB Check with the test mode To enter the test Measure the resistance mode, follow these steps: (1) Press the Upper or Lower CLEAR/OFF key. Normal: infinite (2) Press the button in the following order : + →...

  • Page 92: Convection Fan Not Working, F7

    TROUBLESHOOTING Symptom Check Point 1. Convection Fan not working 1.Check the Resistance of the Relay. 2. F7 2.Check the Motor’s Resistance CN42 CN53 -8-21-...
  • Page 93 TROUBLESHOOTING Convection fan not work, F7? Is the fan motor relay normal? Replace the failed heater Measure the resistance of fan motor relay Unplug the unit and Live Normal: infinite Abnormal : shorted Check the resistance of each fan motor Replace the Fan motor Normal? (Measure the resistance after cooling down.
  • Page 94 TROUBLESHOOTING Is the Connector disconnected or Replace the Main PCB loose? (Check all connectors and harnesses that are associated with the convection fan.) Reconnect. If defective harness, replace or fix. If the same phenomenon occurs even though after fixed connection, you should replace the Main PCB -8-23-...

  • Page 95: Key Not Working, F3 Error

    TROUBLESHOOTING Symptom Check Point 1. Key not working 1. Check the Door Locking System. 2. F3 Error 2. Check the Electric Wiring. CN53 -8-24-...
  • Page 96 TROUBLESHOOTING F3 error (Button short error) Replace the Control panel. Or button does not input (With Glass Touch PCB) And then check button operation using key test mode Unplug the unit (1) Press the Upper or Lower CLEAR/OFF key. (2) Press the button in the following order : + → - → Upper CLEAR/OFF(Upper CLEAR/OFF hold for 3 seconds) Check the connecting states between Reconnect or adjust the...

  • Page 97: Appendix

    APPENDIX 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 VFD 2.

  • Page 98: Exploded View

    #EV# EXPLODED VIEW INTRODUCTION MODEL: Customer Model Product Code SVC Model CONTROLLER PARTS 3913 W229 9506 9504 9381 9384 8511 5080 5532 9381 W229...
  • Page 99 #EV# UPPER DOOR PARTS 102S W243 170L 1000 102L 173U 1008 1020 1015 173U 1021 1035 1009 W222 102S 1801 1035 170R...
  • Page 100 #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 101 #EV# CONTROLLER PARTS 5206 5067 2402 2001 2053 5016 260K 2015 2006 2054 2002 2374 2040 260M 2037 208P 2090 2050 244P 208C 208P 208P 244C 208P 244P 244P 208P 244P 244P...
  • Page 102 #EV# COOKTOP PARTS 3946 3944 3944 521L 3947 W323 3992 3991 3993 3960 3992 3995 7384 3994 W323 3961 3962 3964 3976 3978 3979 3977 3965 521R G058 2041 3973 3980 3972 3950 3974 3951 3952 3984 3982 G035 3981 381A G039 G039...
  • Page 103 #EV# UPPER CAVITY PARTS 5124 5501 5063 551U 5504 2058 5921 591U 5504 W291 546L 546R 5078 5502 5511 5535 4002 5905 5515 5021 5961 W230 W291 5463 5539 W291 W290 5451 5535 5505 590U 5516 320U 5019 5944 590U 5958 W291 5078...
  • Page 104 #EV# CAVITY PARTS 5032 5019 9384 551L 3057 3063 5010 5197 5903 5904 3006 5510 5502 381X 5511 W129 5332 5556 W102 5501 5039 5408 5063 5509 591L 5512 5405 4002 5955 5505 3924 W230 3057 5802 W291 5450 5407 533L 5510 5545...

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