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삼 흥 정 판 Internal Use Only Website http://biz.lgservice.com 30” Freestanding Gas Range SERVICE MANUAL MODEL: LDG3015ST LDG3015SB LDG3015SW CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. January, 2011 P/NO : MFL63290106 Printed in Korea...
SAFETY PRECAUTIONS • Repairs of the appliance should be carried out by a licensed technician only. Incorrect repairs may result in dangerous situations. If you need repairs, contact an LG Service Center or your dealer. • If the power cord is defective, it must be replaced by a qualified service agent with a UL listed range cord.
GENERAL IMPOR ANT SAFETY INSTRUCTIONS IMPOR ANT 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.
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GENERAL IMPOR ANT SAFETY INSTRUCTIONS IMPOR ANT SAFETY INSTRUCTIONS • Be sure your appliance is properly installed and grounded WARNING by a qualified technician. • Do not repair or replace any part of the appliance unless • DO NOT store items of interest to specifically recommended in the manual.
GENERAL IMPOR ANT SAFETY INSTRUCTIONS IMPOR ANT SAFETY INSTRUCTIONS SURFACE COOKING UNITS SELF-CLEAN OVENS • If the top burner flame goes out,gas is still flowing to the • Do Not Clean Door Gasket – The door gasket is essential burner until the knob is turned to the “OFF” position.Do not for a good seal.
GENERAL MODEL & SERIAL NUMBER LABEL MODEL & SERIAL NUMBER LABEL AND TECH SHEET LOCA TIONS AND TECH SHEET LOCA TIONS The Model/Serial Number label and Tech Sheet locations are shown below. * Nameplate is located on reverse of control panel. Flip up to read nameplate from front of range. Model &...
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GENERAL SPECIFICA TIONS SPECIFICA TIONS Model Number LDG3015ST LDG3015SB LDG3015SW Category Non Convection Overall Width 30" Installation type Freestanding Color availability Black White Control Oven Push button key pad Cooktop Knob Display LED Green Electronic clock & timer Control lock capability...
USING YOUR RANGE GENERAL INFORMA TION GENERAL INFORMA TION Rating Label Broil Mode(For the Upper oven only) Broil burner operates during broil mode. Broil can Model numbers are recorded on the rating label. be used to cook foods which are normally broiled. Rating label is located on the lower door right side.
USING YOUR RANGE CONTROL P ANEL FEA TURES CONTROL P ANEL FEA TURES Upper oven 13. LOWER SELF CLEAN: Use the SELF CLEAN function of the UPPER OVEN to clean the inside 1. BAKE: To use traditional bake function. of the LOWER OVEN automatically. 2.
USING YOUR RANGE 1. TO TURN ON THE SURFACE BURNER 5. TIMER ON/OFF 1. Be sure all the surface burners are placed in TIMER Desired TIMER their respective positions. ON/OFF time ON/OFF 2. Push the control knob in and turn it to the To cancel timer at any time, touch TIMER ON/OFF pad.
USING YOUR RANGE 2) PREHEATING ALARM LIGHT ON/OFF 11. OVEN LOCKOUT 1. Press SETTING pad 3 times. Press and hold the START pad for 3 seconds 2. Press “1” pad to switch between (to activate or reactivate LOCKOUT) ON and OFF 3.
COMPONENT ACCESS This section instructs you on how to service each component inside the range. The components and their locations are shown below. COMPONENT LOCA TIONS COMPONENT LOCA TIONS Display SMPS Relay PCB Main PCB Door locking motor & micro switch Oven Sensor Spark module Burner pipe...
COMPONENT ACCESS REMOVING THE BACK, CONTROL COVER REMOVING THE BACK, CONTROL COVER AND KEY P AD ASSEMBL AND KEY P AD ASSEMBL 8. Remove the 2 screws of the eyebrow from the WARNING controller sub assembly and remove the eyebrow. •...
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COMPONENT ACCESS REMOVING THE SP ARK MODULE (IG TRANS) REMOVING THE SP ARK MODULE (IG TRANS) AND POWER CONTROL BOARD (PCB) AND POWER CONTROL BOARD (PCB) 4. There are 4 PCB's (power control board). When WARNING you check PCB, check the proper pcb in default mode and check main pcb.
COMPONENT ACCESS REMOVING THE COOKT OP PLA REMOVING THE COOKT OP PLA 5. Lift top up at front. 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.
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COMPONENT ACCESS REMOVING THE CASE ASSEMBL REMOVING THE CASE ASSEMBL (COOKT OP BURNER ASSEMBL (COOKT OP BURNER ASSEMBL 4. Remove the tubing fitting (5/8-inch). WARNING 5. Remove 5 phillips head screws. • DISCONNECT power supply cord from the outlet before servicing. •...
COMPONENT ACCESS REMOVING THE COOKT OP P REMOVING THE COOKT OP P 4. To remove the valve: WARNING a) Remove the manifold panel (See the step 3 on page 3-5). • DISCONNECT power supply cord b) Remove the fitting that you need to remove. from the outlet before servicing.
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COMPONENT ACCESS 5. To remove the ignition switch: a) Remove the manifold panel (See the step 3 on page 3-5). b) Pry on the 2 release tabs and slide the switch off the valve stem. c) Remove the connector and remove the ignition switch.
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COMPONENT ACCESS REMOVING THE DOOR LA TCH & UPPER DOOR SWITCH REMOVING THE DOOR LA TCH & UPPER DOOR SWITCH (For the Upper oven only) (For the Upper oven only) b) Remove the door latch from the Upper cavity WARNING and unhook the actuating rod.
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COMPONENT ACCESS REMOVING THE DOOR LA TCH & LOWER DOOR SWITCH REMOVING THE DOOR LA TCH & LOWER DOOR SWITCH (For the Lower oven only) (For the Lower oven only) b) Remove 2 screws to widen the space between WARNING Upper &...
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COMPONENT ACCESS 6. To remove the door switch: a) Remove the door switch from the range. To do this, squeeze tabs and use a long nose plier or a snapring plier, and tap it out of the hole with a hammer. b) Disconnect the wires from the terminals.
COMPONENT ACCESS REMOVING THE BROIL BURNER ASSEMBL REMOVING THE BROIL BURNER ASSEMBL (For the Upper oven only) (For the Upper oven only) 5. To remove the broil Burner assembly: WARNING a) Remove the wire cover by removing the screw. b) Remove the 5 screws in the order for easily •...
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COMPONENT ACCESS OVEN BOTT OM, THE FRAME GUIDE AND THE UPPER OVEN BOTT OM, THE FRAME GUIDE AND THE UPPER BAKE BURNER ASSEMBL Y (For the Upper oven only) BAKE BURNER ASSEMBL Y (For the Upper oven only) 1. Turn off the electrical supply and gas supply 6.
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COMPONENT ACCESS OVEN BOTT OM, THE FRAME GUIDE AND THE LOWER OVEN BOTT OM, THE FRAME GUIDE AND THE LOWER BAKE BURNER ASSEMBL Y (For the Upper oven only) BAKE BURNER ASSEMBL Y (For the Upper oven only) 1. Turn off the electrical supply and gas supply 6.
COMPONENT ACCESS REMOVING THE OVEN LIGHT & SOCKET ASSEMBL REMOVING THE OVEN LIGHT & SOCKET ASSEMBL (For both the Upper & Lower oven) (For both the Upper & Lower oven) WARNING CAUTION • DISCONNECT power supply cord • Be careful not to scratch or chip the from the outlet before servicing.
COMPONENT ACCESS REMOVING THE LA TCH DRIVE ASSEMBL REMOVING THE LA TCH DRIVE ASSEMBL (For the Upper oven only) (For the Upper oven only) DOOR LOCKING MECHANISM WARNING The door lock assembly is located at the back side • DISCONNECT power supply cord of range.
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COMPONENT ACCESS REMOVING THE LA TCH DRIVE ASSEMBL REMOVING THE LA TCH DRIVE ASSEMBL (For the Lower oven only) (For the Lower oven only) 6. Remove the 3 mounting screws from the latch drive. WARNING • DISCONNECT power supply cord from the outlet before servicing.
COMPONENT ACCESS REMOVING THE OVEN TEMPERA TURE SENSORS REMOVING THE OVEN TEMPERA TURE SENSORS (For both the Upper & Lower oven) (For both the Upper & Lower oven) WARNING • DISCONNECT power supply cord from the outlet before servicing. • Replace all panels and parts before operating.
COMPONENT ACCESS REMOVING & REPLACING THE LIFT -OFF OVEN DOOR REMOVING & REPLACING THE LIFT -OFF OVEN DOOR (For the Upper door) (For the Upper door) To replace the door: CAUTION Step. 1 • Be careful when removing and Be sure both hinges are lifting the door.
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COMPONENT ACCESS REMOVING & REPLACING THE LIFT -OFF OVEN DOOR REMOVING & REPLACING THE LIFT -OFF OVEN DOOR (For the Lower door) (For the Lower door) To replace the door: CAUTION Step. 1 • Be careful when removing and Firmly grasp both sides of the door at the top. lifting the door.
COMPONENT ACCESS REMOVING THE UPPER OVEN DOOR HANDLE & GLASS (For the Upper door) REMOVING THE UPPER OVEN DOOR HANDLE & GLASS (For the Upper door) 6. To remove the door handle & trim (for Stainless model) a) WARNING Remove the 4 door handle screws and lift the door handle off door trim and slide up the door trim.
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COMPONENT ACCESS 8. To remove a hinge receptacle assembly: c) Lift the inner oven door glass and bracket a) Remove the 4 top liner screws assembly out of the door liner. (See step 3 on page 3-20) b) Place the door liner assembly on a padded work surface with the hinge receptacles over the edge.
COMPONENT ACCESS REMOVING THE LOWER OVEN DOOR HANDLE & GLASS (For the Lower door) REMOVING THE LOWER OVEN DOOR HANDLE & GLASS (For the Lower door) 6. To remove the door handle & trim (for Stainless model) a) WARNING Remove the 4 door handle screws and lift the door handle off door trim and slide up the door trim.
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COMPONENT ACCESS 8. To remove a hinge hanger assembly: d) Lift the inner oven door glass and bracket a) Remove the 4 top liner screws assembly out of the door liner. (See step 3 on page 3-22) b) Place the door liner assembly on a padded work surface with the hinge hangers over the edge.
COMPONENT ACCESS REMOVING THE OVEN DOOR GASKET REMOVING THE OVEN DOOR GASKET 3. Pull the ends of the gasket out of the liner holes. WARNING Liner Hole • DISCONNECT power supply cord from the outlet before servicing. • Replace all panels and parts before operating.
COMPONENT ACCESS REMOVING A SIDE P ANEL REMOVING A SIDE P ANEL 7. Remove the 6 screws from the left or right side WARNING panel. • DISCONNECT power supply cord from the outlet before servicing. • Replace all panels and parts before operating.
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COMPONENT ACCESS REMOVE THE OVEN V VE (SAFETY V REMOVE THE OVEN V VE (SAFETY V & GAS REGULA & GAS REGULA c) Remove the 3 connectors. WARNING d) Remove the 3 screws and than lift the oven valve. • DISCONNECT power supply cord from the outlet before servicing.
COMPONENT TEST Before testing any of components, perform the following checks: NOTE: 1. The most common cause for control failure is corrosion on connectors. Therefore, disconnecting and reconnecting wires will be necessary throughout test procedures 2. ALL units in the first few days of use should be checked for mis-wiring or loose connections 1.
Components Test procedures Results Door latch Door latch Micro Switch 1. Refer to page 3-15, 3-16 for the servicing open Locked (normally open type) procedure 2. Measure the resistance (Multiple meter scale: R x 1000) Continuity Infinite NOTE: After checking for the continuity of switch, make sure that they are connected correctly Oven Sensor 1.
Components Test procedures Results Normal: Approximately Oven lamp 1. Measure the resistance after cooling down 5 Ω ± 10% (Multiple meter scale: R x1) If not replace Normal: 45 Ω ~ 400 Ω Broil or bake igniter 1. Refer to page 3-11, 3-12, 3-13 for servicing procedure. (Room Temperature 2.
CONVERSION TO LP GAS 2. CONVERT THE PRESSURE REGULATOR WARNING WARNING • Turn off the electrical supply and gas supply going to the range. • Do not remove the pressure • Replace all panels and parts before regulator from the range. operating.
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CONVERSION TO LP GAS 1) Remove grates, burner caps and burner WARNING heads. 2) Remove the brass orifice spud in the chimney • Turn off the electrical supply and of each burner using a 5/16" or 8mm nut gas supply going to the range. driver.
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CONVERSION TO LP GAS 5. CONVERT THE OVEN BURNER ORIFICES WARNING 1) UPPER OVEN BAKE BURNER • Turn off the electrical supply and a) Remove oven door, oven bottom, frame guide, nozzle case and oven burner gas supply going to the range. assembly (See the page 3-12).
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CONVERSION TO LP GAS 6. Turn on the Electrical and Gas Supply to WARNING continue with flame adjustment. • Turn off the electrical supply and 7. ADJUSTING THE AIR SHUTTER gas supply going to the range. For bake burner, adjust the Air Shutter for LP gas, loosen the Philips head screw and rotate the •...
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CONVERSION TO LP GAS 4) Insert a small, flat bladed screwdriver into the WARNING valve shaft as shown in Fig. 1. Turn the adjustment screw until the flame • Turn off the electrical supply and reaches the desired size. gas supply going to the range. 5) Replace the knob.
DIAGNOSIS THROUGH SCHEMATIC Symptom : No heating (F-9, F-19) - check: Heater and relay Open/ short Symptom : Oven hot (F-6, F-16) - check: heater Relays Short Symptom : Oven lamp not operating -. Check:Lamps coil’s resistance : Normal : approximately 20~40Ω) Symptom : Dead -.
CHECK THE FAILURE CODE (F-code) ■ When the oven has some failure on cooking, -. Oven may stop operating and F-code will display in display window. -. Some F-codes display immediately(F-3,F-9,F-19), but other codes will store in EEPROM memory and not displayed ■...
SAFETY CAUTION & ERROR CODE SUMMARY 1.1 Safety Caution • Unless SVC manual indicate that ‘power is on’, normal state is power off. 1.2 Error Code Summary Code Description Operation Opened Sensor Upper Oven Thermistor remains open for over 1 min, after cook starts during cooking.
CHECKING FLOW CHART BY FAILURE No display (No power) Control Dead Check AC input of SMPS PCB - SMPS PCB CN1 (pin 1 and 3) Select a function Any beeping Sound? Replace the Oven system PCB (EBR72822702) 120V AC? Normal? Replace the DISPLAY PCB Replace the SMPS PCB (EBR72822801)
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CHECKING FLOW CHART BY FAILURE No display (No power) Check the connection of L1 and N from power inlet. Normal? Fix or replace the lead wire Check and fix the connection 1. Between Oven SYSTEM and SMPS PCB, 2. Between DISPLAY and Oven system PCB Normal? Replace the Oven SYSTEM PCB (EBR72822702)
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CHECKING FLOW CHART BY FAILURE Symptom Check Point 1. No heating 1. Check Electric Wiring 2. F-9 2. The Igniter’s Resistance. 3. F-19 3. Check the Sensor. (Thermister) Check the sensor 10-4...
CHECKING FLOW CHART BY FAILURE Oven does not heat (including F-9, F-19 Error) No heating Disconnect power Check the electric wiring 1. Harness of Relay connection. 2. Each Igniter’s connection. 3. Oven System and Relay PCB connection(CN11, CN12) UPPER UP_Broil UP_Broil UP_Broil UP_Broil...
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CHECKING FLOW CHART BY FAILURE Oven does not heat (including F-9, F-19 Error) Check the resistance of each igniter (measure the resistance after cooling down) Normal:approximately 45Ω~400Ω Broil ignitor Baker ignitor Normal? Replace the failed ignitor Check the resistance of Gas valve Normal:approximately 1~1.5Ω...
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CHECKING FLOW CHART BY FAILURE Oven does not heat (including F-9, F-19 Error) Normal? Replace the error heater Connect the power Check the value of Thermister by using the test mode • To enter the test mode, follow these steps: 1.
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CHECKING FLOW CHART BY FAILURE Oven does not heat (including F-9, F-19 Error) Normal? Disconnect the oven sensor and check the value (measure the resistance after cooling down) Normal:approximately 1.06 kΩ at 65°F ~ 1.12 kΩ at 85°F. Normal? Replace the oven sensor Replace the Relay PCB (EBR71261602) Replace the Oven SYSTEM PCB...
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CHECKING FLOW CHART BY FAILURE Symptom Check Point 1. Door Lock System 1. Check the Electric wiring Failure 2. Check the Motor’s Resistance 2. F-10, F-20 10-9...
CHECKING FLOW CHART BY FAILURE → → F-10, F-20 Error Door lock system error Just after self-clean start,the door lock motor starts to rotate. During that time if the door lock switch does not operate properly after rotating twice, then supervising circuit detects a Door Lock failure and the F-10, F-20 error code appears.
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CHECKING FLOW CHART BY FAILURE Door lock system error → → F-10, F-20 Error Check the door locking motor (measure the resistance) normal: approximately 2.6 kΩ abnormal: infinite or below 5 Ω Normal? Replace the door locking Check the looseness of CN51 motor Normal? Reconnect...
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CHECKING FLOW CHART BY FAILURE Door lock system error → → F-10, F-20 Error Check the Oven Relay PCB’s electric connection (CN01) Check the connection between Oven System PCB and Relay PCB(CN11, CN12) Normal? Reconnect Replace the Oven Relay PCB (EBR71261602) Normal? Replace the Oven System PCB...
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CHECKING FLOW CHART BY FAILURE Symptom Check Point 1. Sensing Fail 1. Check the electric wiring 2. F-1 2. Check the test Mode 3. F-2 3. Check the Sensor (Thermistor) resistance 4. F-4 (approximately 1.06 kΩ at 65F ~ 1.12 kΩ at 85F.) 5.
CHECKING FLOW CHART BY FAILURE Oven sensing error → → F-1, F-2, F-3, F-4 error Main oven sensing failed Connect the power Check the value of Thermister by using the test mode • To enter the test mode, follow these steps: 1.
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CHECKING FLOW CHART BY FAILURE Oven sensing error → → F-1, F-2, F-3, F-4 error Normal? Disconnect the oven sensor and check the value (measure the resistance after cooling down) Normal:approximately 1.06 kΩ at 65°F ~ 1.12 kΩ at 85°F. Normal? Replace the oven sensor Replace the Oven Relay...
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CHECKING FLOW CHART BY FAILURE Symptom Check Point 1. Oven hot 1. Check the Resistance of the Relay. 2. F-6 2. Check the Sensor (thermistor) resistance 3. F-16 (approximately 1.06kΩ at 65F ~ 1.12kΩ at 85F.) Check the Sensor (thermistor) resistance 10-16...
CHECKING FLOW CHART BY FAILURE Oven hot error → → F-6, F-16 error Oven is hot (F-6, F-16) Disconnect the power and oven sensor. Check the oven sensor value (measure the resistance after cooling down) Normal:approximately 1.06 kΩ at 65°F ~ 1.12 kΩ at 85°F Normal? Replace the oven sensor Remove the Relay PCB harness...
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CHECKING FLOW CHART BY FAILURE Oven hot error → → F-6, F-16 error Normal? Replace the Relay PCB (EBR71261602) Replace the Oven SYSTEM PCB (EBR72822702) 10-18...
CHECKING FLOW CHART BY FAILURE No key input Or F-3 Key does not input(including F-3) Check the connection between Oven System PCB’s CN03 Normal? Reconnect Remove Harness and check F-3 error Is problem OK? duplicate or not,after one minute Duplicate the Error? Replace Replace the control supporter Replace Oven system...
TROUBLE SHOOTING BEFORE CALLING FOR SERVICE BEFORE CALLING FOR SERVICE Before you call for service, review this list.It may save you time and expense. The list includes common occurrences that are not the result of defective workmanship or materials in this appliance. Symptoms and Questions Possible Cause/Solution Top burners do not light or do not burn...
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TROUBLE SHOOTING Symptoms and Questions Possible Cause/Solution Oven light does not work. • The light bulb is loose or defective. Tighten or replace the bulb. • The plug on the range is not completely inserted in the electrical outlet. Make sure the electrical plug is inserted into a live, properly grounded outlet.
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TROUBLE SHOOTING Symptoms and Questions Possible Cause/Solution “Burning” or “oily” odor emitting from the This is normal in a new oven. To speed the process, set a self clean vent. cycle for a minimum of three hours. See “SELF CLEAN” in the Care and Cleaning section.