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삼 흥 정 판 Internal Use Only Website http://us.lgservice.com 30” Freestanding Gas Range SERVICE MANUAL MODEL: LRG3097ST LRG3095ST LRG3095SB LRG3095SW CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. December, 2009 Printed in Korea P/NO : MFL63290101...
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 by WARNING 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.
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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. Model & Serial Number Location Tech Sheet Location (On Low Rear Cover)
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GENERAL SPECIFICA TIONS SPECIFICA TIONS Model Number LRG3097ST LRG3095ST LRG3095SB LRG3095SW Category Single Convection Overall Width 30" Installation type Freestanding Color availability Black White Control Oven Glass Touch Cooktop Knob Display Scroll VFD Electronic clock & timer Control lock capability...
USING YOUR RANGE GENERAL INFORMA TION GENERAL INFORMA TION Rating Label Convection Bake / Roast Mode During a convection bake the fan and the burner Model numbers are recorded on the rating label. run opposite of each other, however on a Rating label is located on the lower front left corner convection roast the fan and burner operate at the of the oven frame.
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USING YOUR RANGE CONTROL P ANEL FEA TURES CONTROL P ANEL FEA TURES For Model: LRG3097S 1. CONVECTION BAKE PAD – Touch the pad to 11. START TIME PAD – Touch this pad and then touch select baking with the Convection function. the number pad to set delayed start time.
USING YOUR RANGE CONTROL P ANEL FEA TURES CONTROL P ANEL FEA TURES For Model: LRG3095S 1. CONVECTION BAKE PAD – Touch the pad to 11. START TIME PAD – Touch this pad and then touch select baking with the Convection function. the number pad to set delayed start time.
USING YOUR RANGE 1. TO TURN ON THE SURFACE BURNER 4. TO TURN ON/OFF THE OVEN LIGHT 1. Be sure all the surface burners are placed in The oven light automatically turns ON when the their respective positions. door is opened. The oven light may also be 2.
USING YOUR RANGE 3) LANGUAGE SELECTION (English or 10. CONVECTION ROAST Spanish) CONV. Desired START 1. Touch and hold the pad for 3 seconds. ROAST Temp. Then touch the WARM pad twice. 11. FAVORITE 2. Touch “1” pad for ENGLISH or “2”...
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USING YOUR RANGE ARMING DRA ARMING DRA The rack can be used in 2 ways: To set the warming drawer control 1. Touch the “WARM DRAWER • In the upright position to allow low profile food SET/OFF” pad. “WARMER” begins to items to be placed both under and on top of the blink.
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 Power PCB Relay PCB Main PCB Spark module Door locking motor &...
COMPONENT ACCESS REMOVING THE BACK, CONTROL COVER REMOVING THE BACK, CONTROL COVER AND KEY P AD ASSEMBL AND KEY P AD ASSEMBL 6. 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 3 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. Life 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 & DOOR SWITCH REMOVING THE DOOR LA TCH & DOOR SWITCH b) Remove the 2 screws and then remove the WARNING bar from the door latch. c) Remove the door latch. • DISCONNECT power supply cord from the outlet before servicing.
COMPONENT ACCESS REMOVING THE BROIL BURNER ASSEMBL REMOVING THE BROIL BURNER ASSEMBL d) Remove the igniter connecter in the cavity WARNING (To get the connecter, pull the wire toward the cavity). • DISCONNECT power supply cord e) Remove the broil burner assembly. from the outlet before servicing.
COMPONENT ACCESS OVEN BOTT OM, THE FRAME GUIDE OVEN BOTT OM, THE FRAME GUIDE AND THE BURNER ASSEMBL AND THE BURNER ASSEMBL 1. Turn off the electrical supply and gas supply 6. To remove the nozzle case: going to the range. - Remove the screw and then remove nozzle 2.
COMPONENT ACCESS REMOVING THE CONVECTION AN BLADE AND F AN MOT REMOVING THE CONVECTION AN BLADE AND F AN MOT 1. Turn off the electrical supply and gas supply CAUTION going to the range and remove the oven racks. 2. Remove the four Fan cover screws and set the •...
COMPONENT ACCESS REMOVING THE OVEN LIGHT & SOCKET ASSEMBL REMOVING THE OVEN LIGHT & SOCKET ASSEMBL CAUTION WARNING • DISCONNECT power supply cord • Be careful not to scratch or chip the from the outlet before servicing. oven liner paint when you remove •...
COMPONENT ACCESS REMOVING THE LA TCH DRIVE ASSEMBL REMOVING THE LA TCH DRIVE ASSEMBL DOOR LOCKING MECHANISM WARNING The door lock assembly is located at the back side • DISCONNECT power supply cord of range. from the outlet before servicing. The structural elements are as below.
COMPONENT ACCESS REMOVING THE OVEN TEMPERA TURE SENSORS REMOVING THE OVEN TEMPERA TURE SENSORS 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 REMOVIING & REPLACING THE W ARMIING REMOVIING & REPLACING THE W ARMIING WER ELEMENT (SOME MODEL) WER ELEMENT (SOME MODEL) To remove the warming drawer element: WARNING 1. Remove the 2 bottom bracket screws • DISCONNECT power supply cord 2.
COMPONENT ACCESS REMOVING & REPLACING THE LIFT -OFF OVEN DOOR REMOVING & REPLACING THE LIFT -OFF OVEN DOOR To replace the door: CAUTION 1. Firmly grasp • Be careful when removing and both sides of the lifting the door. door at the top. •...
COMPONENT ACCESS REMOVING THE OVEN DOOR HANDLE & GLASS REMOVING THE OVEN DOOR HANDLE & GLASS 6. To remove the door handle & trim WARNING a) 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 2 top liner screws assembly out of the door liner. (See step 3 on page 3-14) 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 & DRA WER GASKET & DRA WER GASKET c) Pull the ends of the gasket out of the liner WARNING holes. • DISCONNECT power supply cord Liner Hole from the outlet before servicing.
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 4 connectors. WARNING d) Remove the 4 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 Normal: Approximately Door locking Motor 1. Refer to page 3-13 for the servicing procedure 2.6 kΩ ± 10% 2. Measure the resistance If not replace (Multiple meter scale: R x 1000) Abnormal: Infinite(open) below 5Ω (shorted) Door latch Door latch Micro Switch...
Components Test procedures Results Door switch 1. Refer to page 3-8 for the servicing procedure Door open Door closed 2. Measure the resistance after cooling down (Multiple meter scale: R x 1) Continuity Infinite Normal: Approximately 1. Measure the resistance after cooling down Oven lamp 5 Ω...
Components Test procedures Results Normal: 45 Ω ~ 100 Ω Broil or bake igniter 1. Refer to page 3-9 or 3-10 for servicing procedure. (Room Temperature 2. Measure the resistance after cooling down. Resistance) (Multiple meter scale : R x 1) If not replace Oven (safety) valve Normal: Approximately...
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 13/32” or 10 mm nut gas supply going to the range. driver.
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CONVERSION TO LP GAS Orifice Locations for Natural Gas [LRG3095S] WARNING • Turn off the electrical supply and gas supply going to the range. • 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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CONVERSION TO LP GAS 2) Release the connector of the lgniter. WARNING 3) Remove the orifice spud from nozzle holder using a 13/32” or 10mm wrench. • Turn off the electrical supply and 4) Install the LP orifce spud(C) to the nozzle gas supply going to the range.
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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. On the right front valve for model LRG3097S • Turn off the electrical supply and there is a secondary adjustment for the low gas supply going to the range.
COMPOSITION OF CONTROL Model : LRG3097S Front Main PCB (P/N : EBR52349501) Power PCB Back (P/N : EBR57124701) Relay PCB (P/N : EBR52349701) Controller assembly Key PCB (P/N : EBR52350001) Model : LRG3095S Main PCB (P/N : EBR52349502) Control Supporter Power PCB Front (P/N : EBR57124701)
CHECK THE FAILURE CODE (F-code) ■ When the oven has some failure on cooking - Cancel the cook. - In case of failure , F-code will not display during normal operation. - It memorizes F-code logs in EEPROM. ■ Check the failure code as follow these steps. 1.
FAILURE CODE SUMMARY Code Description How to detect Check point Opened Sensor Oven sensor remains open for over 1 min 1. Wiring during cooking. 2. Oven Sensor Shorted Sensor Oven sensor is short for over 1 min 1. Wiring during cooking. 2.
CHECKING FLOW CHART BY FAILURE Symptom Check Point 1. Power Failure 1. Check Electric Wiring (Dead) 2. Check the Power PCB and Main PCB Voltage 2. No Display 10-1...
CHECKING FLOW CHART BY FAILURE Power Off Power Failed(Dead), No display? Replace the defective Is the electric wiring normal? harness Measure the resistance Power On State Power cord and CN01’s connection Go to No 4 Check the key beep. Touch Normal : continuity the “clear key”, Is the beep Abnormal : infinite...
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CHECKING FLOW CHART BY FAILURE Power On Power On Replace the Replace the Check the voltage of Is the voltage of Main Power PCB Main PCB Power PCB PCB’s Vcc 4.5V ~ 5.5V? Is the voltage as below? Check the voltage between pin2 and pin3 of IC2 PIN No.
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CHECKING FLOW CHART BY FAILURE Symptom Check Point 1. No heating 1. Check Gas supply 2. F11 2. Check Electric Wiring 3. Check Heater’s Resistance. 4. Check the Sensor. Only for LRG3097S 10-4...
CHECKING FLOW CHART BY FAILURE Power Off Oven does not heat, F-11 Replace the Is the glowbar ignitor failed glowbar normal? Power Off Measure the resistance of each glowbar Reconnect or (The resistance is shown on next page) repair the Is the disconnect or loose connector connector?
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CHECKING FLOW CHART BY FAILURE Power Off Range Of the resistance Heater Min[Ω] Max [Ω] Replace the Broil Glowbar 45.0 400.0 Is the resistance of failed thermistor thermistor normal? Bake Glowbar 45.0 400.0 Gas Valve(Broil) Check: Gas Valve(Bake) Pins 1and 2 of CN5 wiring in main PCB Normal - approximately 1.09kΩ...
CHECKING FLOW CHART BY FAILURE Power Off Warm drawer does not heat Replace the Is the drawer heater normal? failed thermistor Measure the resistance Power Off of drawer heater Reconnect or Normal - approximately 24Ω repair the Is the disconnect or loose connector connector? 1.
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 3. Check the Relay PCB(Lock Motor Relay) 10-8...
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CHECKING FLOW CHART BY FAILURE Power Off Door Lock System Failure,F-10? Replace the Is the door lock switch micro switch (micro switch) normal? Note : measure the resistance of Just after self-clean start, the door lock motor starts to door lock switch normally open type rotate.
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’s Resistance 10-10...
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CHECKING FLOW CHART BY FAILURE Sensing Fail, F-1, F-2? Power Off Reconnect or repair the Is the disconnect or loose connector connector? 1. Sensor connection 2. CN05 of Main PCB Power On Go to No 1 Is the value of thermistor normal? Check: using the test mode Sensor...
CHECKING FLOW CHART BY FAILURE Symptom Check Point 1. Oven hot 1. Check the Resistance of the Relay. 2. F-6 10-12...
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CHECKING FLOW CHART BY FAILURE Oven too hot, F-6, F-16? 2pin(CN10) Power Off Bakel(RY6) Relay Replace the Resistance L:TAB1 L:TAB1 L:TAB1 Is the resistance of L:TAB1 L:TAB1 L:TAB1 L:TAB1 L:TAB1 L:TAB1 L:TAB1 L:TAB1 L:TAB1 L:TAB1 L:TAB1 L:TAB1 L:TAB1 L:TAB1 L:TAB1 failed thermistor thermistor normal? Check:...
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CHECKING FLOW CHART BY FAILURE Power On Replace the Main PCB Is the Relay operation signal (EBR52349501 Nomal? for LRG3097S, In Idle Mode (press the clear), EBR52349502 Check the voltage of Diode for LRG3095S) 1. Both D40 ends. 2. Both D41 ends 2.
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CHECKING FLOW CHART BY FAILURE Symptom Check Point 1. Keypad Failure 1. Check the Door Locking System. 2. F-3 Error 2. Check the Electric Wiring. 10-15...
CHECKING FLOW CHART BY FAILURE Power On F-3 error (Touch-sensor key error) Or Key does not input Replace The Key PCB Is the Key PCB (EBR52350001 normal operation? for LRG3097S, Power Off EBR52350002 Check: for LRG3095S) Reconnect Re-connect CN1 of or repair the Is the disconnect or Key PCB and CN3 of...
CHECKING FLOW CHART BY FAILURE Key operation Test [Fig.1] How to check Key operation 1. Keys should be accessed according to priority and check the buzzer operation when key is accessed 2. If change the key access order, the buzzer make another beep 3.
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. PROBLEMS POSSIBLE CAUSES SOLUTIONS...
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TROUBLE SHOOTING PROBLEMS POSSIBLE CAUSES SOLUTIONS Food does not bake or roast • Improper oven controls setting. • See the “USING THE OVEN” section in properly user’s guide. • Incorrect rack position. • See the “USING THE OVEN” section in user’s guide.
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TROUBLE SHOOTING PROBLEMS POSSIBLE CAUSES SOLUTIONS Oven will not selfclean • The oven temperature is too high • Allow the range to cool to room to set a self-clean operation. temperature and reset the controls. • Improper oven controls setting. •...
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TROUBLE SHOOTING PROBLEMS POSSIBLE CAUSES SOLUTIONS Oven racks are difficult to • The oven racks were cleaned in a • Apply a small amount of vegetable oil to a slide self-clean cycle. paper towel and wipe the edges of the oven racks with the paper towel.
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#EV# INTRODUCTION (III) For Model: CONTROLLER PARTS COOKTOP PARTS DOOR PARTS CAVITY PARTS DRAWER PARTS -12-3-...
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#EV# DOOR PARTS (II) For Model: 1402 W243 1000 W149 1733 1703 1018 W222 W144 W144 W108 1704 W144 1028 W108 W108 1403 1410 1015 W144 1703 W109 1733 W108 1401 W109 W144 1009 1410 1704 1382 -12-5-...
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