LG LRGL5821S Service Manual
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LG LRGL5821S Service Manual

LG LRGL5821S Service Manual

30" freestanding gas range
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Confidential
30" FREESTANDING
GAS RANGE
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
MODEL: LRGL5821S
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 © 2020 LG Electronics Inc. All rights reserved. Only training and service purposes
MFL71688306_Rev00. 05242020

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Summary of Contents for LG LRGL5821S

  • Page 1 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.
  • Page 2 • 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

    • Removing the Oven Valve (Safety Valve) & Gas Regulator - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3-18 Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...
  • Page 4 EXPLODED VIEW - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 12-1 ~ 12-6 Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 5: General

    • Be careful when removing and lifting the door. • DO NOT lift the door by the handle. - Failure to do so can result in personal injury as the door is very heavy. Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...
  • Page 6 Other surfaces of the appliance may become hot enough to cause burns among these surfaces are oven vent openings and surfaces near these openings, oven doors, and windows of oven doors. Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...
  • Page 7 • To prevent burns, always be sure that the controls for all burners are at the “OFF” position and all grates are cool before attempting to remove them. Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...

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

    AND TECH SHEET LOCATIONS The Model/Serial Number label and Tech Sheet locations are shown below. Model & Serial Number Location Tech Sheet Location (On Low Rear Cover) Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 9: Specifications

    Exterior - Width Exterior - Height (cooktop), 47 (backguard top) Exterior - Depth (Door), 28 (with handle) Power Net weight: lbs (kg) 153.4lbs (69.6kg) Rating 12V 3.9A Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 10: Using Your Range

    Preheating is not required when using broil. All foods should be turned at least once except fish, which does not need to be turned. Broil burner Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 11: Control Panel Features

    USING YOUR RANGE CONTROL PANEL FEATURES 1 Features 4 Start Button 2 Oven Controls 5 Clear Off / Lockout Button 3 Number Buttons or +/- Buttons 6 Smart Diagnosis™ Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 12: To Turn On On The Surface Burners

    3. Press Start to accept the change. 3. START, CLEAR/OFF 1. Touch START key to start oven. 2. Touch CLEAR/OFF key to cancel a program during cooking or Erase during programming. Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 13: Preheating Alarm Light On/Off

    Press 1 Auto appears in the display. COOK Desired time START TIME Auto conversion START On/off 11. BROIL BROIL : once → High START : twice → Low Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 14: Component Access

    Oven light Spark module Burner pipe Burner body Cooktop valve Oven sensor Ignition switch Door switch Broil burner Oven valve Gas pressure regulator Bake burner Igniter (bake) Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 15: Removing The Back, Control Cover And Key Pad Assembly

    4. Remove the 16 screws from the rear cover and remove the cover. Rear Cover Motor Cover 5. Separate PCB assembly after unplugging the 6 connectors. Main PCB Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...
  • Page 16 2. Pull the range away from the wall so that you can access the rear panel. 3. Remove rear cover & motor cover (See step 3~4 on page 3-2) Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 17: Removiing The Cooktop Plate And The Spark Module

    3. Remove all 12 screws from cooktop burner replace screws. housings. 4. Disengage 2 front clips using a steel ruler. Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 18: Removing The Case Assembly(Cooktop Burner Assembly)

    1. Turn off the electrical supply and gas supply going to the range. 2. Remove the cooktop plate (See “REMOVING THE COOKTOP PLATE” on page 3-4). 3. Remove the manifold panel by unfastening the 8 screws. Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 19: Removing The Cooktop Parts

    2. Remove the cooktop plate (See “REMOVING THE COOKTOP PLATE” on page 3-4). Ignition switch 1 screw 1 screw 1 screw 1 screw 1 screw Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...
  • Page 20 COMPONENT ACCESS 5. To remove the electrode (spark plug): a) Remove the electrode from the burner housing. Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 21: Removing The Broil Burner Assembly

    3. To remove the broil Burner assembly: igniter. a) Remove rear cover & motor cover (See step 3~4 on page 3-2) b) Remove the igniter connector from the behind. 2 screws Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 22: Oven Bottom, The Frame Guide And The Burner Assembly

    - Remove the 2 screws and then remove oven bottom. 2 screws 2 screws 8. To remove the igniter. - Remove the 2 screws and then remove the igniter. 2 screws Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 23: Removing The Oven Light & Socket Assembly

    4. Insert a n bulb and replace bulb cover by turning 6. Disconnect the wires from the socket terminals. clockwise. Glass cover & Bulb Inner Ring Glass cover & Bulb Outer Ring <Viewed From Rear Panel> 3-10 Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 24: Removing The Oven Temperature Sensor

    Remove rear cover & motor cover (See step 3~4 on page 3-2) c) Disconnect the wire connection. d) Remove the oven sensor. Oven temperature sensor Wire connection 1 screws 3-11 Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 25: Removing & Replacing The Drawer

    1. Place the drawer rails on the guides. 2. Push the drawer back until it stops. 3. Lift the front of the drawer and push back until the stops clear the guides. 3-12 Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 26: Removing & Replacing The Lift-Off Oven Door

    5. Lift door up and out until the hinge arm is clear of lock 5. Close the oven door. the slot. Hinge arm Hinge arm Bottom Bottom edge of edge of slot slot Indentation Indentation 3-13 Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 27: Removing The Oven Door Handle & Glass

    3. Remove the 2 top door screws. 2 Top liner screws 4. Remove the three bottom screws from the door liner. 7 screws 3-14 Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...
  • Page 28 Remove the 4 top door screws. Inner oven door Glass & Bracket d) Lift the hinge hanger out of the door liner slot. 4 top liner Screws Hinge Door frame 3-15 Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 29: Removing The Oven Door Gasket

    1. Open the oven door to its fully down position. 2. Pull the oven door gasket clips out of the liner holes until all of the clips are removed. 3-16 Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 30: Removing A Side Panel

    5. Raise the cooktop plate (see the page 3-4 for the procedure). 6. Remove the two screws from the top rear of the side panel. 9. Push forward and remove the side panel. 3-17 Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...
  • Page 31 Remove the 3 fittings. b) Remove the 3 connectors. c) Remove the 2 screws and than lift the oven valve. 3 Connectors 2 Screws 3 Fittings 3-18 Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 32: Component Test

    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 Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 33: Oven Sensor

    (Multiple meter scale: R x 1) Continuity Infinite Oven lamp 1. Measure the resistance after cooling down Normal: Approximately (Multiple meter scale: R x1) 5 Ω ± 10% If not replace Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 34: Broil Or Bake Igniter

    40° ~ 80° 2. Measure the resistance by rotating the cam of each switch slowly. (Multiple meter scale : R x 1) 40˚ 80˚ Continuity Infinite Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 35: Conversion To Lp Gas

    2) Turn off the electrical power to the range. CAUTION • If the gas supply to the range is disconnected for any reason see the installation instructions for proper connection and safety precautions. Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...
  • Page 36 10,000 BROIL 13,500 BAKE 19,000 Denotes orifice code Denotes orifice code Broil and Bake burner orifices Top burner orifices Top burner orifices Broil and Bake burner orifices Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...
  • Page 37 - Sharp edge may be present and you can cut yourself. Orifice Locations for LP Gas [LRGL5825** / LRGL5823** / LRGL5821**] 108/108/104 104/95/95 Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...
  • Page 38 Some yellow 2) Release the connector of the lgniter. tipping may be normal when used on LP. Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...
  • Page 39 B. Yellow tips on outer cones: Normal for LP Gas Follow conversion process with original orifices to C. Soft Blue flames: convert the appliance to the original gas. Normal for Natural Gas. Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 40: Composition Of Control

    COMPOSITION OF CONTROL Main PCB Front Back Tact & Display PCB Controller assembly Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 41: Led Module

    COMPOSITION OF CONTROL Main PCB Tact & Display PCB LED Module Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 42: Diagnosis Through Schematic

    WHITE -. Check : related( , BLACK Symptom : Oven hot(F-6) YELLOW -. Check : All heater relays are PINK open/short BLUE BROWN GREEN GRAY ORANGE VIOLET Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 43: Check The Failure Code (F-Code)

    If the oven does not have any failure, the oven will display like FIG. 2 < FIG. 2 > NOTE: After checking the failure code, press the “CLEAR” key Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 44: Failure Code Summary

    150°F and oven temperature is 2. Gas Valve less 3. Ignitor Than or equal to starting temperature 4. Oven Sensor over 5 minutes during preheating, while door is closed. Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 45: 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 2. No Display 10-1 Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 46: No Display (No Power)

    Check the connection of Power If defective harness, Cord. Normal? replace or fix Reconnect. If defective harness, replace or fix Check the connection of Main PCB. (CN01) Nomal? 10-2 Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...
  • Page 47 Check the connection of L1 and N Reconnect. at Terminal block. Normal? Check the Thermostat - Normal : Short Replace the Thermostat - Abnormal : Open Normal? Replace the main PCB 10-3 Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...
  • Page 48 Is it OK? CN21 CN21 Reconnect. If defective harness, replace or fix. If the same phenomenon occurs even though after fixed connection, you should replace the Display PCB 10-4 Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 49: No Heating (Including F9 Error)

    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 (thermistor). TAB01~06 CN10 CN10 10-5 Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...
  • Page 50 If defective harness, Is the Connector disconnected Replace or fix or loose? (1) Electric wiring of Relay PCB All taps. (2) Electric wiring of electric element 10-6 Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...
  • Page 51 CHECKING FLOW CHART BY FAILURE Replace the failed heater Check the resistance of each heater. Normal? (Measure the resistance after cooling down. The resistance is shown below) 10-7 Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...
  • Page 52 Is the resistance of thermistor normal? Thermistor Check Pin 1 and 2 of CN10 in main PCB. Normal – approximately 0.6~1K ohm at 25℃. CN10 Replace the Main PCB 10-8 Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 53: Sensing Fail (Including F1, F2 Error)

    CHECKING FLOW CHART BY FAILURE Symptom Check Point 1. Sensing Fail 1. Check the electric wiring 2. F-1 2. Check the sensor(thermistor) resistance 3. F-2 CN10 10-9 Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...
  • Page 54 Sensing Fail, F1, F2? Unplug the unit Reconnect or adjust the Is the Connector connection disconnected or loose? (1) Sensor connection (2) CN10 of Main PCB Sensor connection CN10 10-10 Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...
  • Page 55 Thermistor thermistor normal? Check : Pin 1 and 2 of CN10 of Main PCB Normal – approximately 0.6~1K ohm at 25℃ CN10 Replace the Main PCB 10-11 Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 56: Oven Hot (Including F6 Error)

    CHECKING FLOW CHART BY FAILURE Symptom Check Point 1. Oven hot 1. Check the Resistance of the Relay. 2. F-6 TAB04~08 10-12 Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...
  • Page 57 Oven too hot error  F-6 error F6(Oven Hot) Unplug the unit Check the DLB Relay damage Replace the Main PCB (measure the resistance) TAB11 TAB12 Normal Abnormal Continuity Infinite 10-13 Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...
  • Page 58 Replace the Main PCB thermistor normal? Check : Pin 1 and 2 of CN10 of Main PCB Normal – approximately 0.6~1K ohm at 25℃ CN10 Replace the Thermistor 10-14 Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 59: No Key Input

    (press the start key for three seconds) Normal? Check the control panel and Find the mechanical malfunction of key Normal? Replace the PCB Case or Display PCB Replace the main PCB 10-15 Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 60: Oven Lamp Does Not Operate

    Reconnect In case of the defective harness, Check the looseness of connector replace or fix (TAB04 and 7pin of CN02) Welded Normal Continuity Infinite Reconnect Normal? 10-16 Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...
  • Page 61 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 Main PCB 10-17 Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 62: Trouble Shooting

    • The oven gas shut-off valve may • Make sure that the oven gas shut-off valve oven does not have accidentally been moved is fully open. during cleaning or moving. 11-1 Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...
  • Page 63 • The plug on range is not • Make sure the electrical plug is inserted into completely inserted in the a live, properly grounded outlet. electrical outlet. 11-2 Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...
  • Page 64 See “CARE AND CLEANING OF smoothly or drags THE RANGE” section in user’s guide. • Drawer is over-loaded or load is • Reduce weight. Redistribute drawer contents. unbalanced. 11-3 Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...

  • Page 65: Exploded View

    #EV# EXPLODED VIEW INTRODUCTION MODEL: Customer Model Product Code SVC Model CONTROLLER PARTS COOKTOP PARTS DOOR PARTS CAVITY PARTS DRAWER PARTS Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...
  • Page 66 DOOR PARTS W243 W225 1000 102U 1801 W225 102S W222 1028 1733 1020 1704 W101 1735 1021 W321 W108 1009 W101 1466 1733 102S W321 102L 1704 Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...
  • Page 67 #EV# CONTROLLER PARTS 2006 2374 3075 2050 2381 2034 2037 H211 W144 3006 2501 H212 2036 H213 W227 Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...
  • Page 68 3974 3973 W294 3990 3056 3981 3981 3982 W323 5949 3982 5947 3986 3981 5950 3961 3964 555C 3962 5948 3925 3960 5946 3961 3940 W227 2441 Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...
  • Page 69 #EV# DRAWER PARTS 8603 8530 8514 8501 8507 8530 850L 850R 8524 8508 3541 3036 851D 8503 3541 851D Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...
  • Page 70 3063 3063 5532 W301 5512 W225 5010 5021 5533 W230 W290 5556 5958 W229 5515 9381 5510 5952 5922 5900 8511 5911 5014 5943 3501 5409 5931 Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes...

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