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This Owner's Manual is provided and hosted by Appliance Factory Parts. LG LRE3091SW Owner's Manual Shop genuine replacement parts for LG LRE3091SW Find Your LG Electric Range Parts - Select From 91 Models -------- Manual continues below --------...
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삼 흥 정 판 Internal Use Only Website http://biz.lgservice.com 30” Freestanding Electric Range SERVICE MANUAL MODEL: LRE3091SW LRE3091SB LRE3091ST CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. June, 2009 Printed in Korea P/NO : MFL37118306...
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 a WARNING qualified technician. • Do not repair or replace any part of the appliance unless • DO NOT touch heating elements or specifically recommended in the manual.
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GENERAL IMPOR ANT SAFETY INSTRUCTIONS IMPOR ANT SAFETY INSTRUCTIONS • Do Not Leave Children Alone - Children should not be left alone or SELF-CLEAN OVENS unattended in area where appliance is in use. They should never be • Do Not Clean Door Gasket – The door gasket is essential for a allowed to sit or stand on any part of the appliance.
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 LRE3091SW / LRE3091SB / LRE3091ST Category Thermal Overall Width 30" Installation type Freestanding Color availability WH, BK, STS Control Oven Keypad(Tact switch) Cooktop Knob(Mechanical type) Display Electronic clock & timer Oven lock capability...
USING YOUR RANGE GENERAL INFORMA TION GENERAL INFORMA TION Rating Label Broil Mode Top element operates during broil. Broil can be Model numbers are recorded on the rating label. used to cook foods which are normally broiled. Rating label is located on the lower front left corner Preheating is not required when using broil.
USING YOUR RANGE CONTROL P ANEL FEA TURES CONTROL P ANEL FEA TURES Single Single Single Dual Left Front Left Rear Right Rear Right Front Element Element Element Dual Element 10 11 1. CLOCK Pad: Press before setting the time of day. 11.
USING YOUR RANGE Use to turn on the surface elements. An infinite 3. TIMER ON/OFF choice of heat settings is available from LOW to TIMER Desired TIMER High. The Knobs can be set on or between any ON/OFF time ON/OFF of the settings.
USING YOUR RANGE 9. THERMOSTAT ADJUSTMENT 11. BROIL The oven temperature can be adjusted from BROIL: once → Hi START -35°F (-19°C) to 35°F (19°C). : twice → Low Note: The thermostat adjustments made with this feature will just change Bake, Convection Bake and Convection Roast temperature.
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 Main PCB Power PCB Door Locking Motor & Micro Switch Surface Elements Door Latch Assembly Door Switch Oven Sensor...
COMPONENT ACCESS REMOVIING THE BACK, CONTROL COVER REMOVIING THE BACK, CONTROL COVER AND KEY MEMBRANE ASSEMBL AND KEY MEMBRANE ASSEMBL 4. Remove the 2 screws from the rear control cover WARNING and remove the cover. 5. Remove 8 screws of PCB and separate PCB •...
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COMPONENT ACCESS REMOVING KNOB AND INFINIT SWITCH REMOVING KNOB AND INFINIT SWITCH WARNING • DISCONNET power supply cord 2 screws 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 SURF ACE ELEMENTS REMOVING THE SURF ACE ELEMENTS AND THE CERAMIC GLASS COOKT AND THE CERAMIC GLASS COOKT Step. 5 WARNING Protect the cooktop surface • DISCONNET power supply cord and turn the assembly over. from the outlet before servicing. •...
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COMPONENT ACCESS REMOVING THE DOOR LA TCH & DOOR SWITCH REMOVING THE DOOR LA TCH & DOOR SWITCH b) Remove the door latch from the burner box WARNING and unhook the actuating rod. • DISCONNET power supply cord from the outlet before servicing. •...
COMPONENT ACCESS REMOVING THE BROIL ELEMENT REMOVING THE BROIL ELEMENT b) Pull the element forward so that you can WARNING access the terminals and disconnect the wires. • DISCONNET power supply cord Terminals from the outlet before servicing. • Replace all panels and parts before operating.
COMPONENT ACCESS REMOVING THE EXPOSED BAKE ELEMENT REMOVING THE EXPOSED BAKE ELEMENT b) Pull the element forward so that you can WARNING access the terminals and disconnect the wires. • DISCONNET power supply cord Terminals from the outlet before servicing. •...
COMPONENT ACCESS REMOVING THE OVEN LIGHT & SOCKET ASSEMBL REMOVING THE OVEN LIGHT & SOCKET ASSEMBL CAUTION WARNING • DISCONNET 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 • DISCONNET 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 5. To remove an oven temperature sensor, WARNING disconnect the connector from the main harness and remove the 2 mounting screws in oven • DISCONNET power supply cord cavity.
COMPONENT ACCESS REMOVING THE SURGE FIL TER ASSEMBL REMOVING THE SURGE FIL TER ASSEMBL 3.To remove the surge filter assembly WARNING a) Disconnect 1 connector and WH wire. • DISCONNET power supply cord b) Remove the earth screws. from the outlet before servicing. c) Remove the 2screws on the supporter.
COMPONENT ACCESS REMOVING THE ST ORAGE DRA REMOVING THE ST ORAGE DRA WARNING • Turn POWER OFF before removing the Warming Drawer. - Failure to do so can result in severe personal injury, death or electrical shock. Pull the drawer To Remove Storage Drawer : 1.
COMPONENT ACCESS REMOVING & REPLACING THE LIFT -OFF OVEN DOOR REMOVING & REPLACING THE LIFT -OFF OVEN DOOR To replace the door: CAUTION Step. 1 • Be careful when removing and Firmly grasp both lifting the door. sides of the door •...
COMPONENT ACCESS REMOVING THE OVEN DOOR HANDLE & GLASS REMOVING THE OVEN DOOR HANDLE & GLASS 6. To remove the door handle & trim (for stainless model) WARNING a) Remove the 4 door handle screws and lift the door handle off door trim and slide up the door handle. •...
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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 3. Pull the ends of the gasket out of the liner holes. WARNING Liner Hole • DISCONNET 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 2 screws from the left or right side WARNING panel. • DISCONNET power supply cord from the outlet before servicing. • Replace all panels and parts before operating.
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 Infinite switch 1. Refer to page 3-3 for the servicing procedure. (Single units): 2. Set the Multiple meter scale to the R x 1000. LF switch 3. Disconnect all wires from infinite switch. LR switch 4. When turn on/turn off the knob, position measure RR switch the resistance between L1 to H1.
Components Test procedures Results Infinite switch 1. Refer to page 3-3 for the servicing procedure. (Double units): 2. Set the Multiple meter scale to the R x 1000. RF switch 3. Disconnect all wires from infinite switch. 4. Push in and turn left knob to check the single type. 5.
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Components Test procedures Results Infinite switch 7. When turn on/turn off the knob, position measure (Double units): the resistance between 4 to 4a. RF switch 8. After check the single type, check the dual type at the same procedure. Infinite Switch Knob Position Results ∞...
Components Test procedures Results Normal: Approximately Oven Sensor 1. Refer to page 3-10 for the servicing procedure. 1.09 kΩ ± 10% 2. Measure the resistance after cooling down If not replace (Multiple meter scale: R x 1000). NOTE: Ω Value was tested at room temperature (77F/25˚C) NOTE: Oven sensor is so sensitive to temperature.
Components Test procedures Results Normal: Below 5 Ω. Oven lamp 1. Measure the resistance after cooling down If not replace (Multiple meter scale: R x1).
Components Test procedures Results Single surface units: 1. Refer to page 3-4 for the servicing procedure. Left Rear (LR) 2. Set the Multiple meter scale to the R x 1. 3. Disconnect wires from cook-top elements. Right Rear(RR) 4. Touch the ohmmeter test leads to the element Element terminal and 1A.
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Components Test procedures Results Single surface units: 1. Refer to page 3-4 for the servicing procedure. Right Front (RF) 2. Set the Multiple meter scale to the R x 1. Element 3. Disconnect wires from cook-top elements. 4. Touch the ohmmeter test leads to the element terminal and 1A.
Components Test procedures Results Dual surface units: 1. Refer to page 3-4 for the servicing procedure. Left Front (LF) 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 &...
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. - 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 FAIRURE Symptom Check Point 1. Power Failure 1. Check Electric Wiring. (Dead) 2. Check the Thermostat. 2. No Display 3. Check the Power PCB and Main PCB Voltage. MAIN PCB POWER PCB...
CHECKING FLOW CHART BY FAIRURE No display (No power) Blank display Enter input key Some beep Oven display sounds? blanks? Check AC input voltage of Power PCB - Power PCB CN02 (pin 5 and 7) 5 Pin CN02 CN02 CN02 CN02 CN02 CN02...
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CHECKING FLOW CHART BY FAIRURE No display (No power) Check the LVT coil resistance PIN No. of CN02 Resistance PIN5 ~ PIN7 approximately 138 (Ω) Normal? Replace the power PCB (EBR60969201) Power On Check the voltage of Power PCB - CN13 (pin 1 and pin 3, pin 1 and pin 4) 4 Pin 1 Pin PIN No.
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CHECKING FLOW CHART BY FAIRURE No display (No power) Some beep sound? Replace the main PCB Replace the power PCB (EBR60969301) (EBR60969201)
CHECKING FLOW CHART BY FAIRURE Oven does not heat No Heating (Main Oven) Disconnect power Check the loose of bake, broil heater terminal and harness broil heater Bake heater Normal? Reconnect. If defective harness, replace or fix Check the bake heater (measure the resistance after cooling down) Normal: approximately 24Ω...
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CHECKING FLOW CHART BY FAIRURE Oven does not heat Normal? Replace the bake heater Check the broil heater (measure the resistance after cooling down) Normal: approximately 19Ω Normal? Replace the broil heater...
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CHECKING FLOW CHART BY FAIRURE Oven does not heat Check the loose oven sensor connector Normal? Reconnect Check the oven sensor (measure the resistance after cooling down) Normal: approximately 1.09kΩ 25˚C Normal? Replace the oven sensor Replace the power PCB (EBR60969201) Normal? Replace the main PCB (EBR60969301)
CHECKING FLOW CHART BY FAIRURE Symptom Check Point 1. Door Lock System 1. Check the Electric wiring Failure 2. Check the Motor’s Resistance 2. F-10 MAIN PCB POWER PCB...
CHECKING FLOW CHART BY FAIRURE Door lock system error F-10 error Door lock failed Disconnect power Check the terminal loose of micro switch and door locking motor. Normal? Reconnect Check the oven door lock switch (micro switch) (measure the resistance → Normally open type) Door latch Door latch open...
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CHECKING FLOW CHART BY FAIRURE Door lock system error F-10 error Normal? Replace the micro switch Check the door locking motor (measure the resistance) normal: approximately 2.6 kΩ abnormal: infinite or below 5 Ω Normal? Replace the door locking motor Check the loose connector ( Power PCB (EBR60969201) CN03) Normal?
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CHECKING FLOW CHART BY FAIRURE Door lock system error F-10 error Check the loose connection Normal? Reconnect Replace the main PCB (EBR60969301) Normal? Replace the Power PCB (EBR60969201) 9-12...
CHECKING FLOW CHART BY FAIRURE 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 POWER PCB 9-13...
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CHECKING FLOW CHART BY FAIRURE Main oven sensing error F-1, F-2 error Main oven sensing failed Disconnect power Check the loose oven sensor connector Normal? Reconnect Disconnect the main oven sensor and check the main oven sensor value (measure the resistance after cooling down) Normal: approximately 1.09kΩ...
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CHECKING FLOW CHART BY FAIRURE Main oven sensing error F-1, F-2 error Check the loose connector (Power PCB CN04) and look if harness terminals damaged or not Reconnect and Normal? replace the bad harness Connect the power Check the value of thermistor by using the test mode ※...
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CHECKING FLOW CHART BY FAIRURE Main oven sensing error F-1, F-2 error STEP 2 sensor value STEP 3 Check the sensor value at step 3 Normal: the sensor value is from 70˚F to 90˚F at 25 Normal? Replace the Power PCB (EBR60969201) 9-16...
CHECKING FLOW CHART BY FAIRURE Symptom Check Point 1. Oven hot 1. Check the Resistance of the relay. 2. F-6 9-17...
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CHECKING FLOW CHART BY FAIRURE Oven too hot error F-6 error Oven is hot (F6) Disconnect the power and main oven sensor. Check the main oven sensor value (measure the resistance after cooling down) Normal:approximately 1.09kΩ Normal? Replace the main oven sensor Remove the Power relay PCB(EBR60969201) harness Check the bake relay welded or not.
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CHECKING FLOW CHART BY FAIRURE Oven too hot error F-6 error Normal? Replace the power PCB (EBR60969201) Check the broil relay welded or not. (measure the resistance) Welded Normal Continuity Infinite Normal? Replace the power PCB (EBR60969201) Replace the main PCB (EBR60969301) 9-19...
CHECKING FLOW CHART BY FAIRURE Symptom Check Point 1. Key pad Failure 1. Check the Door Locking System. 2. F-3 Error 2. Check the Electric Wiring. 3. Check the physical fixation of key. 9-20...
CHECKING FLOW CHART BY FAIRURE No key input Key does not input Check the Door Locking System Nomal: unlock Normal? Cancel the Door locking Normal? Check the control panel and Find the physical fixation of Key (restriction) Normal? Replace the control pannel Replace the main PCB (EBR60969301) 9-21...
CHECKING FLOW CHART BY FAIRURE Oven lamp does not operate Oven lamp does not operate Disconnect power Check the loose of oven lamp terminal and harness. Normal? Reconnect If defective harness, replace or fix. Check the loose connector (Power PCB CN02) Reconnect Normal? 9-22...
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CHECKING FLOW CHART BY FAIRURE Oven lamp does not operate Check the oven lamp (measure the resistance) Normal: approximately 20~40Ω, Abnormal: infinite Abnormal Infinite Normal? Replace the oven lamp Replace the power PCB (EBR60969201) Replace the main Normal? PCB (EBR60969301) 9-23...
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 Range is not level.
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TROUBLE SHOOTING PROBLEMS POSSIBLE CAUSES / SOLUTIONS Oven will not work • Plug on range is not completely inserted in the electrical outlet. - Make sure electrical plug is plugged into a live, properly grounded outlet. • A fuse in your home may be blown or the circuit breaker tripped. - Replace the fuse or reset the circuit breaker.
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TROUBLE SHOOTING PROBLEMS POSSIBLE CAUSES / SOLUTIONS Food does not broil • Aluminum foil used on the the broiling pan and grid has not been fitted properly properly and slit as recommended. - See the using the oven section. • In some areas the power (voltage)may be low. - Preheat the broil element for 10 minutes.
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TROUBLE SHOOTING PROBLEMS POSSIBLE CAUSES / SOLUTIONS Steam from the vent • When using the convection feature, it is normal to see steam coming out of the oven vent. As the number of racks or amount of food being cooked increases, the amount of visible steam will increase.
SCHEMATIC DIAGRAM NOTE: WARNING Schematic diagram shows oven door closed and POWER MUST BE DISCONNECTED BEFORE SERVICING THE APPLIANCE. FAILURE TO DO SO CAN RESULT IN unlocked. All elements are DEATH OR ELECTRICAL SHOCK. set to “OFF”. WIRE COLORS SYMBOL COLOR BLACK WHITE...
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. For Model: LRE3091SW / LRE3091SB / LRE3091ST BAKE TAB03...
For Model: LRE3091SW / LRE3091SB / LRE3091ST LF Cook-top Element Regulator for LF 9” LF 9” 2.5kW Single 2500 W Element ON Hot Surface 240V 240V Neon Neon Lamp Lamp LR Cook-top Element Regulator for LR 6” LR 6” 1.2kW...
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