LG LRE3085ST Service Manual
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LG LRE3085ST Service Manual

30” freestanding electric range
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See also: Owner's Manual , Installation Manual
삼
흥
정
판
30" Freestanding Electric Range
SERVICE MANUAL
MODEL: LRE3085ST
CAUTION
BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL37118326
Website http://biz.lgservice.com
1
Internal Use Only
May, 2013
Printed in Korea

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Summary of Contents for LG LRE3085ST

  • Page 1 삼 흥 정 판 Internal Use Only Website http://biz.lgservice.com 30” Freestanding Electric Range SERVICE MANUAL MODEL: LRE3085ST CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. May, 2013 P/NO : MFL37118326 Printed in Korea...

  • Page 2: Safety Precautions

    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.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS (Page) GENERAL- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1-1 ~ 1-5 •...
  • Page 4 (Page) COMPONENT TEST - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4-1 ~ 4-7 •...

  • Page 5: General

    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.
  • Page 6 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.

  • Page 7: Surface Cooking Units

    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.

  • Page 8: Model & Serial Number Label And Tech Sheet Locations

    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 Rear Cover)

  • Page 9: Specifications

    GENERAL SPECIFICA TIONS SPECIFICA TIONS Model Number LRE3085ST Category Convection Overall Width 30" Installation type Freestanding Color availability Control Oven Keypad(Membrane) Cooktop Keypad(Membrane) Display Scroll VFD Electronic clock & timer Control lock capability Audible preheat signal Special function Option(6 categories) 1.

  • Page 10: Using Your Range

    USING YOUR RANGE GENERAL INFORMA TION GENERAL INFORMA TION Convection Bake / Roast Mode Rating Label Upper element, lower element, Rear element(some Model numbers are recorded on the rating label. model) and fan operate during convection bake. Rating label is located on the lower front left corner Convection bake should be used for cooking of the oven frame.

  • Page 11: Control Panel Features

    USING YOUR RANGE CONTROL P ANEL FEA TURES CONTROL P ANEL FEA TURES 1. BAKE PAD: Press to select the bake function. 13. COOK TIME PAD: Press and then use the number pads to set the amount of time you want your food 2.

  • Page 12: To Turn On A Single Surface Unit (Right Rear, Left Rear)

    USING YOUR RANGE To turn on a single surface unit 4. TIMER ON/OFF (Right Rear, Left Rear) TIMER Desired TIMER 1. Press ON/OFF pad for the desired element. ON/OFF time ON/OFF 2. Press ( + / – ) pad to choose the desired setting. To cancel timer at any time, touch TIMER ON/OFF pad.

  • Page 13: Bake, Timed Bake, Delayed Timed Bake

    USING YOUR RANGE 5) BEEPER VOLUME 8. FAVORITES 1. Press SETTING pad 5 times FAVORITES START 2. Press “1” pad for loud level, : Once → Bread “2” pad for normal level, : Twice → Meat “3” pad for low level, : 3 times →...

  • Page 14: Warming Drawer

    USING YOUR RANGE ARMING DRA ARMING DRA To set the warming drawer control 1. Press the WARMING DRAWER SET/OFF button(near the number buttons). The indicator light will flash. (If no further buttons are pressed within 25 seconds, the display will clear.) Warming drawer rack in position 2.

  • Page 15: Component Access

    COMPONENT ACCESS This section instructs you on how to service each component inside the range. The components and their locations are shown below. COMPONENT LOCA TIONS COMPONENT LOCA TIONS Main PCB Cook Top Display PCB Door Locking Motor & Micro Switch Surface Elements Door Latch Assembly Door Switch...
  • Page 16 COMPONENT ACCESS For Model : LRE3085ST /00 REMOVING THE LAMP , CONTROLLER, BACK COVER AND REMOVING THE LAMP , CONTROLLER, BACK COVER AND CONTROLLER ASSEMBL Y(MEMBRANE, PCB, SUPPOR CONTROLLER ASSEMBL Y(MEMBRANE, PCB, SUPPOR 6. Remove the 5 screws and wirings from Main...
  • Page 17 COMPONENT ACCESS 9. Remove a cooktop plate assembly (See the page 11. Remove 6 screws from the controller assembly. 3-6) and remove 4 screws from side panel. 12. For serving the KEY Membrane, the controller sub 10. Remove 4 screws from the controller assembly assembly should be separated in whole.
  • Page 18 COMPONENT ACCESS For Model : LRE3085ST /01 REMOVING THE LAMP , CONTROLLER, BACK COVER AND REMOVING THE LAMP , CONTROLLER, BACK COVER AND CONTROLLER ASSEMBL Y(MEMBRANE, PCB, SUPPOR CONTROLLER ASSEMBL Y(MEMBRANE, PCB, SUPPOR 6. Remove 3 screw and unplug wiring from Main WARNING PCB to pull it out.

  • Page 19: Removing Pcbs (Main Pcb And Relay Pcb)

    COMPONENT ACCESS REMOVING PCBs (MAIN PCB AND RELA Y PCB) REMOVING PCBs (MAIN PCB AND RELA Y PCB) 4. There are 2 PCBs. When you check PCB, check WARNING the proper PCB in default mode and check Main PCB. • DISCONNECT power supply cord NOTE: Refer to the page 5-1~5-6 for from the outlet before servicing.
  • Page 20 COMPONENT ACCESS REMOVING THE SURF ACE ELEMENTS REMOVING THE SURF ACE ELEMENTS AND THE CERAMIC GLASS COOKT AND THE CERAMIC GLASS COOKT Step. 6 WARNING To remove the surface • DISCONNECT power supply cord elements from the outlet before servicing. a) Remove the wires from •...
  • Page 21 COMPONENT ACCESS REMOVING THE DOOR LA TCH & DOOR SWITCH REMOVING THE DOOR LA TCH & DOOR SWITCH b) Remove the door latch from the front side of WARNING cavity and unhook the actuating rod. • DISCONNECT power supply cord An actuating from the outlet before servicing.

  • Page 22: Removing The Outer Broil Element(Sheathed Heater)

    COMPONENT ACCESS REMOVING THE OUTER BROIL ELEMENT(SHEA THED HEA TER) REMOVING THE OUTER BROIL ELEMENT(SHEA THED HEA TER) * 2 screws of the rear bracket do not only fasten WARNING broil heater’s rear bracket but also a thermistor. While servicing broil elements, the thermistor also •...

  • Page 23: Removing The Inner Broil Element(Charcoal Heater)

    COMPONENT ACCESS REMOVING THE INNER BROIL ELEMENT(CHARCOAL HEA TER) REMOVING THE INNER BROIL ELEMENT(CHARCOAL HEA TER) 6. Remove 5 screws and detach a insulator from WARNING range. • DISCONNECT power supply cord from the outlet before servicing. Insulator • Replace all panels and parts before operating.
  • Page 24 COMPONENT ACCESS 9. Remove 4 screws and detach the inner heater assembly from range 10. Remove 2 screws and the mesh. Remove 2 screws and the brackets. Now charcoal heater can be detached. Mesh 2 Brackets NOTE: Although all charcoal assembly are not detached, the only charcoal heater can be replaced after removing the mesh, brackets and wirings.

  • Page 25: Removing The Hiidden Bake Element

    COMPONENT ACCESS REMOVING THE HIDDEN BAKE ELEMENT REMOVING THE HIDDEN BAKE ELEMENT 1. Unplug range or disconnect power. 7. Carefully pull the hidden bake element out of the range. 2. Pull the range out of its mounting location so that you can access the rear of the unit.
  • Page 26 COMPONENT ACCESS REMOVING THE CONVECTION, REMOVING THE CONVECTION, AN BLADE AND F AN MOT AN BLADE AND F AN MOT 1. Disconnect power and remove oven racks. CAUTION 2. Pull the range out of its mounting location so that you can access the rear of the unit. •...

  • Page 27: Removing The Oven Light & Socket Assembly

    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 •...

  • Page 28: Removing The Latch Drive Assembly

    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.

  • Page 29: Removing The Oven Temperature Sensor

    COMPONENT ACCESS REMOVING THE OVEN TEMPERA TURE SENSOR REMOVING THE OVEN TEMPERA TURE SENSOR 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 30 COMPONENT ACCESS REMOVING THE W ARMING DRA WER ELEMENT & REMOVING THE W ARMING DRA WER ELEMENT & TEMPERA TURE SENSOR TEMPERA TURE SENSOR To remove the warming drawer element: WARNING 1. Turn the range on its back for servicing. * Be careful and do it slowly in order to be not •...

  • Page 31: Removing & Replacing The Lift-Off Oven Door

    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 •...

  • Page 32: Removing The Oven Door Handle

    COMPONENT ACCESS REMOVING THE OVEN DOOR HANDLE REMOVING THE OVEN DOOR HANDLE 5. Lift the door cover assembly out and put it down. WARNING 6. To remove the door handle for stainless models. - Remove 4 screws from door bracket and the •...

  • Page 33: Removing The Oven Door's Inner Glass

    COMPONENT ACCESS REMOVING THE OVEN DOOR’S INNER GLASS REMOVING THE OVEN DOOR’S INNER GLASS 6. To remove a hinge hanger assembly: WARNING Remove 4 screws and detach the hinge hanger from the door frame slot. • DISCONNECT power supply cord from the outlet before servicing.

  • Page 34: Removing The Oven Door Gasket

    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.

  • Page 35: Removing The Side Panel

    COMPONENT ACCESS REMOVING THE SIDE P ANEL REMOVING THE SIDE P ANEL 7. Remove 6 screws from the side pandel 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 36: Component Test

    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.

  • Page 37: Door Locking Motor

    Components Test procedures Results Normal: Approximately Door locking Motor 1. Refer to page 3-14 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) Micro Switch ON position (Unlock position) OFF position (Lock position)

  • Page 38: Door Switch

    Components Test procedures Results Door switch 1. Refer to page 3-7 for the servicing procedure Door open Door closed 2. Measure the resistance after cooling down (Multiple meter scale: R x 1) Continuity Infinite Normal: Below 5 Ω. Oven lamp 1.

  • Page 39: Outer Broil Heater

    Components Test procedures Results Normal : Approximately 23Ω Outer Broil heater 1. Remove wire leads Abnomal : Infinite(opened) 2. Measure resistance after cooling down NOTE: Ω Value was tested at room temperature (77F/25˚C) Be careful the element is sensitive to temperature. Bake heater Normal : Approximately 16.5Ω...

  • Page 40: Single Surface Unit(Lr, Rr)

    Components Test procedures Results Single surface units: 1. Refer to page 3-6 for the servicing procedure Left Rear(LR) 2. Set the Multiple meter scale to the R x 1 Right Rear(RR) 3. Disconnect wires from cook-top elements Element 4. Touch the ohmmeter test leads to the element terminal and 1A.

  • Page 41: Dual Surface Unit(Lf, Rf)

    Components Test procedures Results Dual surface unit: 1. Refer to page 3-6 for the servicing procedure Left Front(LF) 2. Set the Multiple meter scale to the R x1 Right Front (RF) 3. Disconnect wires from cook-top elements Element 4. Touch the ohmmeter test leads to the (4 & 2A) and (3 &...
  • Page 42 Components Test procedures Results Center Rear(CR) 1. Refer to page 3-6 for the servicing procedure Element 2. Set the Multiple meter scale to the R x 1 : Warming Zone 3. Disconnect wires from CR elements (Plane Heater) 4. Touch the ohmmeter test leads to the between element terminal.

  • Page 43: Composition Of Control

    COMPOSITION OF CONTROL For Model : LRE3085ST /00 iring Diagram iring Diagram RADIANT COOK-TOP Wattage RR:1200W approx.47 LR:1200W approx.47 1400W(Inner) approx.41 1800W(Outer) approx.32 1400W(Inner) approx.41 1800W(Outer) approx.32 WARM ZONE :100W approx.570 < TABLE 1 > WIRE COLORS SYMBOL COLOR WHITE...
  • Page 44 COMPOSITION OF CONTROL For Model : LRE3085ST /01 iring Diagram iring Diagram RADIANT COOK-TOP Wattage Ω RR:1200W approx.47Ω LR:1200W approx.47Ω 1400W(Inner) approx.41Ω 1800W(Outer) approx.32Ω 1400W(Inner) approx.41Ω 1800W(Outer) approx.32Ω WARM ZONE :100W approx.570Ω < TABLE 1 > WIRE COLORS SYMBOL COLOR...

  • Page 45: Key Matrix

    COMPOSITION OF CONTROL Key Matrix Key Matrix...
  • Page 46 COMPOSITION OF CONTROL Main PCB (Loc No. : 2006) Front Oven Relay PCB (Loc No. : 5070) Back Cook top display PCB (Loc No. : 2031) Controller assembly Key Pad...

  • Page 47: Main Pcb

    COMPOSITION OF CONTROL Main PCB Main PCB (P/N : EBR77562701) CN32 CN26 CN25 CN30 CN03 CN11 CN16 CN13 CN17 CN09 CN24 CN21 CN22 Oven Relay PCB Oven Relay PCB CN103 CN102 CN17 CN16 CN100 CN101...

  • Page 48: Cook Top Display Pcb

    COMPOSITION OF CONTROL Cook top display PCB Cook top display PCB Key Pad Key Pad...

  • Page 49: Svc Test Mode

    SVC TEST MODE Sequence of SVC Test Mode ■ To enter the test mode, follow these steps: (1) press the “CLEAR” button (2) press the “BAKE”,”BROIL” button at the same time (3) press the “BAKE”,”BROIL” button at the same time again. Software version Model Option (4) press the NUM “0”...
  • Page 50 SVC TEST MODE • Relay’s Loc. No. Y13 : RY13 Y11 : RY11 Y12 : RY12 • Active Load name Current inspecting Relay’s information is displayed (6) Whenever you input the “START” button, Relay is sequential operation as below ※ ※ Relay Operation Sequence RY13 RY12 RY11...

  • Page 51: Check The Failure Code

    CHECK THE FAILURE CODE Check the Failure Code ■ When the oven has some failure on cooking, Cooking will be canceled and log data of F-code will be recorded in EEPROM. F-code will not display during normal operation. ■ Check the failure code as follow these steps. 1.

  • Page 52: Failure Code Summary

    CHECK THE FAILURE CODE Failure Code Summary Code Description explanation Check point Sensor open Oven Thermistor is open 1. Wiring 2. Oven Sensor Sensor short Oven Thermistor is shorted. 1. Wiring 2. Oven Sensor Button short When some button is continuously shorted for >= 60 1.

  • Page 53: Basic Check Summary

    BASIC CHECK SUMMARY For Model : LRE3085ST /00 Symptom : Oven lamp not operating -. Check the Lamp coil’s resistance Symptom : Oven hot(F6) -. Check: All heater relays are open/shorted Symptom : no heating(F9) -. Check : All heater relays and...
  • Page 54 BASIC CHECK SUMMARY For Model : LRE3085ST /01 Symptom : Oven lamp not operating -. Check the Lamp coil’s resistance Symptom : Oven hot(F6) -. Check: All heater relays are open/shorted Symptom : no heating(F9) -. Check: All heater relays and DLB relay are open.t...

  • Page 55: Checking Flow Chart By Failure

    CHECKING FLOW CHART BY FAILURE Symptom Check Point 1. Power Failure 1. Check Electric Wiring (Dead) 2. Check the Main PCB Input Voltage with CN1 2. No Display...

  • Page 56: Power Failed(Dead), No Display

    CHECKING FLOW CHART BY FAILURE Unplugged the unit Power Failed (Dead), No display? Reconnect Is the connector connected to or adjust the Main PCB disconnected or connection Plug the unit disassembled? (CN1) Check the button beep. Touch the Clear button, Change the Can hear the beep Main PCB...
  • Page 57 CHECKING FLOW CHART BY FAILURE Replace the Is the electric wiring normal? defective Measure the resistance Power harness cord and CN01’s connection Normal : continuity Normal Abnormal Abnormal: infinite - Code L1 to Pin1 of CN01(RD) - Code N to Pin3 of CN01(WH) RD color is L1.

  • Page 58: No Heating, F9

    CHECKING FLOW CHART BY FAILURE Symptom Check Point 1. No heating 1. Check Electric Wiring 2. F9 2. Check Heater’s Resistance. 3. Check the Sensor. CN103 CN102 ⓐ ⓐ CN100 CN101 ⓐ ⓐ Resistance[Ω] pin ~ ⓐ ⓐ CN103 2 pin ~ ⓐ...
  • Page 59 CHECKING FLOW CHART BY FAILURE Symptom Check Point 1. No heating 1. Check Electric Wiring 2. F9 2. Check Heater’s Resistance. 3. Check the Sensor. CN103 CN102 ⓐ ⓐ CN100 CN101 ⓐ ⓐ Resistance[Ω] pin ~ ⓐ ⓐ CN101 2 14.5...
  • Page 60 CHECKING FLOW CHART BY FAILURE Symptom Check Point 1. No heating 1. Check Electric Wiring 2. F9 2. Check Heater’s Resistance. 3. Check the Sensor. CN13 Resistance[Ω] CN13 1 1.09K...
  • Page 61 CHECKING FLOW CHART BY FAILURE Oven does not heat, F9 Replace the Is the connection of heater defected normal? Unplugged the unit heater Measure the resistance Reconnect or of each heater. Is the Connector adjust the (The resistance is shown below) disconnected or loose? connection 1.
  • Page 62 CHECKING FLOW CHART BY FAILURE Unplugged the unit Range Of the resistance Replace the Is the resistance of defected Ω Heater Resistance[ thermistor normal? Themistor Approximately Broil (Inner) Check: Broil (Outer) Pins 1and 2 of CN13 in main PCB Convection Normal- approximately 1.09kΩ...

  • Page 63: Cook Top No Heating

    CHECKING FLOW CHART BY FAILURE Symptom Check Point 1. Cook top 1. Check Electric Wiring No heating 2. Check the Resistance of each Heater CN21 CN22 CN23 Location Resistance[Ω] CR (ⓐ ~ ⓒ) RR (CN21 ① ~ ⓓ) ⓓ LR (CN21 ② ~ ⓒ) ⓒ...
  • Page 64 CHECKING FLOW CHART BY FAILURE Symptom Check Point 1. Cook top 1. Check Electric Wiring No heating 2. Check the Resistance of each Heater CN21 CN22 CN23 Location Resistance[Ω] LF 6” (CN22 ① ~ ⓒ) LF 9” (CN22 ② ~ ⓒ) RF 6”...
  • Page 65 CHECKING FLOW CHART BY FAILURE Oven does not heat Replace the Measure the resistance defected Unplugged the unit of each heater. heater (The resistance is shown Next page.) Reconnect Is the Connector or adjust the disconnected loose? connection 1. Electric wiring All taps of Right rear Main PCB Left rear...
  • Page 66 CHECKING FLOW CHART BY FAILURE Left Front Outer Right Front Inner Left Front Inner Range Of the resistance Ω Heater Resistance[ Approximately Right rear Left rear Right front (inner) Right Front (Outer) Left Front (Inner) Left Front (Outer) Center Rear Right Front Outer Replace the Main PCB 9-12...
  • Page 67 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. F10 3. Check the Relay PCB (Door Lock Relay) CN13 Resistance[Ω] ∞ CN 13 (④ ~ ⑤) 9-13...
  • Page 68 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. F10 3. Check the Relay PCB (Door Lock Relay) Resistance[Ω] ⓐ ~ ⓑ 2.6K 9-14...

  • Page 69: Door Lock System Failure,F10

    CHECKING FLOW CHART BY FAILURE Unplugged the unit Door Lock System Failure,F10? Reconnect Plug the unit Is the Connector or adjust the disconnected or loose? connection Note : Check the below : Just after self-clean start, the door lock motor starts to rotate.
  • Page 70 CHECKING FLOW CHART BY FAILURE Replace the Is the door lock switch micro switch (micro switch) normal? measure the resistance of door lock switch normally open type Normal Abnormal Replace the Is the resistance of the lock motor lock motor normal ? measure the resistance of lock motor Normal : approximately 2.6kΩ...
  • Page 71 CHECKING FLOW CHART BY FAILURE Symptom Check Point 1. Sensing Fail 1.Check the Electric Wiring 2. F1 2.Check the Test Mode 3. F2 3.Check the Sensor’s Resistance CN13 Resistance[Ω] CN13 1 1.09K 9-17...

  • Page 72: Sensing Fail, F1, F2

    CHECKING FLOW CHART BY FAILURE Plug the unit Sensing Fail, F1, F2? Is the value of thermistor Go to No 1 normal? Unplugged the unit Check with the test mode To enter the test mode, follow these steps: Is the Connector Reconnect 1.
  • Page 73 CHECKING FLOW CHART BY FAILURE Symptom Check Point 1. Oven hot 1. Check the Resistance of the Relay. 2. F6 2. Check the Sensor’s Resistance CN103 CN102 ⓐ ⓐ CN100 CN101 ⓐ ⓐ Location Resistance[Ω] ∞ CN103 ① ~ ② Relay Short check ∞...
  • Page 74 CHECKING FLOW CHART BY FAILURE Symptom Check Point 1. Oven hot 1. Check the Resistance of the Relay. 2. F6 2. Check the Sensor’s Resistance CN103 CN102 ⓐ ⓐ CN100 CN101 ⓐ ⓐ Location Resistance[Ω] ∞ CN101 ① ~ ② Relay Short check ∞...
  • Page 75 CHECKING FLOW CHART BY FAILURE Symptom Check Point 1. Oven hot 1. Check the Resistance of the Relay. 2. F6 2. Check the Sensor’s Resistance CN13 Resistance[Ω] CN13 1 1.09K 9-21...

  • Page 76: Oven Hot, F6

    CHECKING FLOW CHART BY FAILURE Oven hot, F6? Unplugged the unit ConV(RY107) Relay Replace the CN103 1 pin and CN102 2 Is the resistance of Resistance defected thermistor normal? thermistor Check: Pins 1and 2 of CN13 wiring in main PCB Normal- approximately 1.09kΩ...
  • Page 77 CHECKING FLOW CHART BY FAILURE Plug the unit Replace the Is the value of thermistor Main PCB normal? Check with the test mode To enter the testmode, follow these steps: 1. press the “clear” key 2. press the “BAKE”, “BROIL” button at the same time 3.

  • Page 78: Keypad Failure, F3 Error

    CHECKING FLOW CHART BY FAILURE Symptom Check Point 1. Keypad Failure 1. Check the Door Locking System. 2. F3 Error 2. Check the Electric Wiring. CN03 9-24...
  • Page 79 CHECKING FLOW CHART BY FAILURE Plug the unit F3 error (button short error) Or button does not input Replace the Key pad. And then check button Unplugged the unit operation using key test mode To enter the test mode, below steps: Reconnect 1.

  • Page 80: Appendix

    APPENDIX Key operation T est sequence Key operation T est sequence First Last ※ ※ How to check button operation 1. Keys should be accessed according to the above sequence and check the beep sound when key is accessed 2. If the key access order was changed, the buzzer make double beep sound 3.

  • Page 81: Trouble Shooting

    TROUBLE SHOOTING PROBLEMS POSSIBLE CAUSES & FAULTS SOLUTIONS Oven not operating. • Bad main PCB • Test and/or replace PCB ➞ Refer to the page 9-1~9-3 • Power outage • Verify power is present at unit. • Verify that the circuit breaker is not tripped •...
  • Page 82 TROUBLE SHOOTING PROBLEMS POSSIBLE CAUSES & FAULTS SOLUTIONS Electronic timer will not • Failed main PCB • Replace main PCB accept Programming. Electronic timer will not • Failed main PCB • Replace main PCB accept Programming. Clock and timer not working •...
  • Page 83 TROUBLE SHOOTING PROBLEMS POSSIBLE CAUSES & FAULTS SOLUTIONS Oven door sagging on one • Hinge loose or out of position to • Adjust hinges or replace hinges side oven liner Door does not close • Broken or misadjusted door spring •...

  • Page 84: Schematic Diagram

    SCHEMATIC DIAGRAM For Model : LRE3085ST /00 NOTE:Schematic diagram shows door WARNING switch In the cook position with the oven POWER MUST BE door open and elements off. DISCONNECTED BEFORE SERVICING THE APPLIANCE RADIANT COOK-TOP Wattage Ω RR:1200W approx.47Ω LR:1200W approx.47Ω...
  • Page 85 SCHEMATIC DIAGRAM For Model : LRE3085ST /01 NOTE: WARNING Schematic diagram shows oven door opened and POWER MUST BE DISCONNECTED BEFORE unlocked.All elements are SERVICING THE APPLIANCE. FAILURE TO DO SO set to “OFF”. CAN RESULT IN DEATH OR ELECTRICAL SHOCK.

  • Page 86: Strip Circuits

    STRIP CIRCUITS STRIP CIRCUITS Complete the following steps before checking electric oven circuit 1.Check the line voltage, household fuse or circuit breaker. 2.Check for loose wiring or mis-wiring within electric range. NOTE: The following individual circuits are for use in diagnosis, and are shown in the ON position. OVEN LIGHT CLOCK DISPLAY ON BAKE / COOK &...
  • Page 87 BROIL WARMNING DRAWER CONV. BAKE / CONV. ROAST SELF CLEANING 12-4...
  • Page 88 CR (Warming Zone) RR Cook-top Element LR Cook-top Element 12-5...
  • Page 89 RF Cook-top Element LF Cook-top Element 12-6...

  • Page 90: Exploded View

    #EV# EXPLODED VIEW INTRODUCTION MODEL: Customer Model Product Code SVC Model CONTROLLER PARTS COOKTOP PARTS DOOR PARTS CAVITY PARTS DRAWER PARTS -13-1-...
  • Page 91 #EV# DOOR PARTS 1023 1801 W222 1000 W225 1733 1024 1703 1020 1018 1021 W222 1045 W222 W222 W225 W101 1009 1703 W101 1734 1735 1024 1704 1025 1026 -13-2-...
  • Page 92 #EV# CONTROLLER PARTS(I) MODEL: Customer Model Product Code SVC Model 2048 2042 2041 2050 2006 2031 2381 2037 2036 3006 2034 -13-3-...
  • Page 93 #EV# COOKTOP PARTS 3014 3056 3401 3401 3057 3303 3204 3022 3303 3302 3204 3204 3302 3207 3204 -13-5-...
  • Page 94 #EV# DRAWER PARTS 8388 8513 8514 8501 8513 8507 W228 8523 8522 8517 8519 8021 8509 8505 8524 8504 5505 8602 8512 8708 8520 5505 8708 8502 8508 -13-6-...
  • Page 95 #EV# CAVITY PARTS(I) MODEL: Customer Model Product Code SVC Model 3013 5410 5517 5539 5012 5503 5019 3063 W234 5037 5501 3031 5700 5511 5509 5067 3093 5016 5502 5063 3205 5021 W301 5506 5505 5513 5516 5557 W230 5070 5505 3109 W301...

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