LG LRG30855S Series Training Manual
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LG LRG30855S Series Training Manual

LG LRG30855S Series Training Manual

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LG TRAINING MANUAL
LG TRAINING MANUAL
LRG30855Sx Gas Range - Fall 2007

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Summary of Contents for LG LRG30855S Series

  • Page 1 LG TRAINING MANUAL LG TRAINING MANUAL LRG30855Sx Gas Range - Fall 2007...

  • Page 2: Safety Notices And Warnings

    LG Electronics. Unauthorized modifications will not only void the warranty, but may lead to property damage or user injury. If wires, screws, clips, straps, nuts, or washers used to complete a ground path are removed for service, they must be returned to their original positions and properly fastened.

  • Page 3: Table Of Contents

    LRG30855** (GAS RANGE) Safety Notices and Warnings Contents General Information Introduction Warranty Installation Anti-tip Device Tools For Servicing Operation Surface Elements Oven Vent Other Controls Touchpad Controls Oven – Baking or Roasting Oven – Broiling Convection Baking or Roasting Auto Recipe Conversion™ Clock and Timer Probe Warming Drawer...
  • Page 4 Oven Temperature Sensor Control Panel Spark Module Electronic Range Control (ERC) Control Panel and Touch Board Surface Burner Assembly Burner Removal Main Burner Alignment Maintop (Surface) Burner Flame Adjustments Low Flame Simmer Adjustments Testing Burner Flame Stability Manifold Burner Valves Ignitor Switches Gas Manifold Door Latch Assembly...

  • Page 5: General Information

    GENERAL INFORMATION IMPORTANT SAFETY NOTICES The information in this training manual is intended for use by persons who have adequate backgrounds of electrical, electronic, and mechanical experience. Any attempt to repair a major appliance may result in personal injury or property damage.

  • Page 6: Introduction

    INTRODUCTION The self-cleaning gas oven has a tactile, electronic touchpad control. It is user-friendly and easy to operate. The surface burners are controller by manually operated valves. The convection baking and roasting cycles provide even cooking and superior baking results. The nomenclature plate, with model and serial numbers, is on the oven frame above the warming drawer.

  • Page 7: Warranty

    WARRANTY GAS RANGE Page 6 of 72 TRAINING MANUAL...

  • Page 8: Installation

    INSTALLATION POWER SUPPLY This appliance must be connected to 120 VAC, 60Ø current on a 20-amp, dedicated circuit. Do not use an adapter or an ungrounded outlet. GROUNDING SPECIFICATIONS This appliance must be properly grounded. Wiring must conform to the National Electrical Code (NEC) and all local codes.

  • Page 9: Anti-Tip Device

    ANTI-TIP DEVICE Be sure to install the anti-tip bracket. This prevents tipping the range in the event someone stands on the door or otherwise puts the range off balance. Use the installation template to locate the wall bracket; then, attach the bracket to the wall with a large wood screw.

  • Page 10: Operation

    OPERATION We include brief operating instructions for the technician to allow a thorough check-out of the appliance and to use during diagnosis and repair. SURFACE ELEMENTS There are five surface elements, each of which is a different output. The controls are all the same, though.

  • Page 11: Touchpad Controls

    TOUCHPAD CONTROLS PROBE – Press to select the SELF CLEAN – Press to start a probe function. self-cleaning cycle. BAKE – Press to select the CONV BAKE – Press to select bake function. convection baking. BROIL HI/LO – Press to select CONV ROAST –...

  • Page 12: Oven - Baking Or Roasting

    OVEN – BAKING or ROASTING This oven is not designed for open-door cooking. To operate the oven for regular (non-convection) baking or roasting: Touch BAKE Touch the number pads to enter the desired temperature. Touch START. The display will show ON and 100° (or 40° if set for Celsius.) As the oven heats, the display will show the changing temperature.

  • Page 13: Convection Baking Or Roasting

    CONVECTION BAKING or ROASTING The oven fan is turned off when the oven door is opened. Do not leave the door open for long periods of time while using convection cooking. Since the oven is not designed for any sort of open-door cooking, we recommend leaving the door shut all the time other than when placing items in the oven or removing them.

  • Page 14: Probe

    PROBE The probe allows a reading of the internal temperature of the food during cooking. Insert the probe into the food (typically a large roast or portion of meat) and plug it in to the socket in the oven. Insert the probe into the food. Plug the probe into the socket inside the oven.

  • Page 15: Self-Cleaning Cycle

    To use the warming drawer: Touch WARMING DRAWER. Touch 1, 2, or 3 on the number pad to select low, medium, or high. Touch START. To turn it off, touch WARMING DRAWER. Touching CLEAR/OFF does nothing to the warming drawer. SELF-CLEANING CYCLE Before using the self-cleaning cycle, especially for the first time, we recommend ventilating the kitchen with an open window or ventilation fan or hood.

  • Page 16: Component Location Views

    COMPONENT LOCATION VIEWS GAS RANGE Page 15 of 72 TRAINING MANUAL...
  • Page 17 COMPONENT LOCATION VIEWS GAS RANGE Page 16 of 72 TRAINING MANUAL...
  • Page 18 COMPONENT LOCATION VIEWS Control panel in service position Cooktop removed, with heat shield and latch assembly cover removed GAS RANGE Page 17 of 72 TRAINING MANUAL...

  • Page 19: Oven Door Removal And Replacement

    OVEN DOOR REMOVAL WARNING! Sharp edges are exposed when ® servicing the oven. Wear Kevlar gloves or an equivalent protective hand cover. OVEN DOOR REMOVAL To remove the door, open it to the first stop near the vertical (closed) position. Lift the door and pull it straight up.

  • Page 20: Warming Drawer Removal And Replacement

    WARMING DRAWER AND GASKET REPAIR DRAWER REMOVAL Pull the drawer out all the way to the stop. There are tabs in the drawer rails. Lift the left tab and push down the right tab to pull the drawer off the rail. DRAWER REPLACEMENT To replace the drawer, place the rails into the slides and push the drawer into...

  • Page 21: Gas Shutoff Valve

    GAS SHUTOFF VALVE (OVEN ONLY) NOTE: The gas shutoff valve shuts off the gas to the oven ONLY and has no effect on the surface burners. This shutoff valve is accessible from the inside of the range after the warming drawer is removed. The shutoff valve allows servicing the oven burners without having to pull the range out and shut off the gas main.

  • Page 22: Main Top Removal

    MAIN TOP REMOVAL Remove the grates, burner caps, burner heads, igniters, and the T-15 ® Torx screws from the cooktop. Insert a putty knife under the edge of the main top press the clips and allow removal of the main top. SIDE PANEL REMOVAL Remove the range from its installation.

  • Page 23: Oven Hinge Removal

    OVEN HINGE REMOVAL Remove the range from its installation. Remove the door. (Page 18.) Remove the warming drawer. (Page 19.) Remove the side panel. (Page 21.) Note the position of the hinge spring and the paint indicator. Remove the hinge spring. Remove the E-clips from the hinge pin and remove the pin.

  • Page 24: Door

    DOOR The doors can be separated into two assemblies: (1) the outer assembly, consisting of the handle, vent trim, outer glass, and frame; and (2) the inner assembly, consisting of the inner panel, gasket, glass panels, and insulation. The ® inner and outer assemblies are held together by two T-20 Torx screws in the top corners and four ¼”...

  • Page 25: Oven Light And Switch

    OVEN LIGHT CAUTION! Before replacing the light bulb, unplug the range. The glass cover should be removed only when cold. Be sure to let the cover and bulb cool completely. Do not touch a hot bulb with bare hands or a damp cloth. Replace the bulb with an appliance type bulb, 120 V and no more than 40 watts.

  • Page 26: Oven Burner Ignition

    OVEN BURNER IGNITION The oven BAKE and BROIL burners are ignited by Norton style glow bar ignitors. The ignition circuits consist of the electronic control (main board), the ignitor, and the gas valve. The gas valve and the pressure regulator are supplied as a complete assembly.

  • Page 27: Broil Burner And Ignitor

    BROIL BURNER AND IGNITOR Remove the oven door. (Page 18.) Remove the screw that holds the burner in place. Lower the burner. Remove the two hex head screws that hold the ignitor to the burner. Remove the burner. NOTE: When reinstalling the burner, be sure the tab on the burner is inserted into the slot on the rear wall of the oven.

  • Page 28: Bake Burner And Ignitor

    BAKE BURNER AND IGNITOR To remove the bake burner ignitor, remove the oven door. (Page 18.) Remove the warming drawer. (Page 19.) Remove the bottom pan by removing two screws, lifting the back of the pan, and sliding the pan back until it can be removed from the oven.

  • Page 29: Broil And Bake Burner Flame Adjustments

    BAKE AND BROIL BURNER FLAME ADJUSTMENTS WARNING! Adjustments require disassembly of the burner section. To avoid handling hot parts, the oven should be cool. NOTE! A small amount of odor is normal and will be present when the range is first turned on. If there is a strong odor, the bake and broil assemblies should be inspected.

  • Page 30: Regulating Gas Pressure

    REGULATING GAS PRESSURE Correct gas pressure is essential for quick burner ignition, correct burner BTUH input, and to minimize the byproducts of combustions, such as carbon monoxide. The recommended regulated pressure for natural gas is 3.5 to 4 inches of water column.

  • Page 31: Safety Valve And Pressure Regulator

    SAFETY VALVE and PRESSURE REGULATOR WARNING! Before servicing the range, disconnect the power and the gas supply. Be sure the oven is absolutely cool. NOTE! The pressure regulator and the safety valve are a combination unit (combi-valve) and must be replaced as an assembly.

  • Page 32: Convection Fan Motor

    CONVECTION FAN MOTOR Remove the oven door. (Page 18.) Remove six Phillips screws that secure the convection fan guard to the back wall of the oven. Then remove the fan guard. Use a ½” wrench to remove the nut from the convection fan blade. Hold the blade securely and turn the nut clockwise.

  • Page 33: Probe Outlet

    PROBE OUTLET The probe outlet is near the top left corner of the oven. Remove the two Phillips screws that attach the probe outlet to the oven. The outlet and wiring can be pulled out approximately 1½”. NOTE! When replacing the probe outlet, cut the wires as close to the end as possible.

  • Page 34: Oven Temperature Sensor

    OVEN TEMPERATURE SENSOR Remove the oven door. (Page 18.) Remove the two ¼” hex head screws that secure the wiring cover on the back of the range. Disconnect the sensor wire harness. Remove the two ¼” hex head screws that attach the sensor to the oven wall.

  • Page 35: Control Panel

    CONTROL PANEL Loosen but do not remove the two ¼” hex head screws at the top corners of the back panel. From the front, remove the two T-15 ® Torx screws that attach the bottom of the control panel to the back guard.

  • Page 36: Electronic Range Control (Erc)

    ELECTRONIC RANGE CONTROL (ERC) To access the electronic range control (ERC or main board), put the control panel into the service position. Remove the four Phillips screws (two on each side). Mark and label the wire locations before disconnecting the ERC. Wire tie holding wire harness to ERC.

  • Page 37: Surface Burner Assembly

    SURFACE BURNER ASSEMBLY Ignitor wire Bracket Wire inlet Orifice Inlet tube ½” fitting WARNING! Shut off the gas to the range before proceeding! Each main top burner consists of: Burner cap Burner head Orifice Ignitor Inlet tube (not visible, see photo above) BURNER REMOVAL Remove the maintop.

  • Page 38: Main Burner Alignment

    MAIN BURNER ALIGNMENT For proper operation of the burner, alignment of the orifice holder, orifice, and air/gas mixer tube must be correct. The alignment can be checked by placing 7 mm or in. nut driver over the orifice to exaggerate the angle. The nut driver should stand straight, indicating the alignment and gas injection angle is correct.

  • Page 39: Testing Burner Flame Stability

    TESTING BURNER FLAME STABILITY Test 1 Turn the knob from HI to LOW quickly. If the low flame goes out, increase the flame size and test again. Test 2 With the burner on LOW setting, open and close the oven door quickly.

  • Page 40: Manifold Burner Valves

    MANIFOLD BURNER VALVES The manifold burner valves are located behind the manifold panel. Each valve is attached to the manifold by a single screw. Turn off the gas supply. Remove the manifold panel. (See page 38.) Using a ½-in. open end wrench, disconnect the burner inlet tube from the valve.

  • Page 41: Ignitor Switches

    IGNITOR SWITCHES The ignitor switches are located inside the manifold panel and are attached to each maintop burner valve. The back of each switch is molded to conform to the front of the burner valve and is locked in place by 2 tabs. All switches are wired to a single harness and can be replaced separately.

  • Page 42: Gas Manifold

    GAS MANIFOLD WARNING! Shut off the gas before proceeding. To remove the gas manifold: Remove the maintop. (See page 21.) Remove the two ¼” hex head screws that attach the shield to the top right side of the manifold panel. Remove the ½”...

  • Page 43: Door Latch Assembly

    DOOR LATCH ASSEMBLY The door latch assembly consists of a lock motor, cam and switch assembly, lock hook, and mounting plate. It will be supplied as a complete assembly. The door latch assembly is located under the main top in a recess that is concealed by a metal cover.

  • Page 44: Gas Conversion (Natural Gas Vs. Propane Or Lp)

    GAS CONVERSION (NATURAL GAS vs. PROPANE or LP) The range comes with the parts necessary to convert it to LP. Conversion includes the regulator and the surface burner orifices, or spuds. CONVERT THE REGULATOR The regulator is located in the lower, left hand, rear corner of the range, as viewed from the front.
  • Page 45 Remove the grates, burner caps, and burner heads. Then remove the brass orifice (spud) in the chimney of each burner using a ” (7 mm) wrench or nut driver. NOTE: The orifices have spring-loaded retaining rings around the hex head to hold the orifice in the nut driver during installation and removal.

  • Page 46: Convert The Bake And Broil Orifices

    To prevent leakage, make sure the orifices (spuds) are securely screwed into the gas supply tubes. For the extra large burner (right front), the choke and self threading screw will be needed. Insert the choke into the burner base, then insert the set screw into the burner base and tighten securely.

  • Page 47: Oven Calibration

    Note! If burner flames look like A. Further air shutter adjustment is required. Normal burner flames should look like B or C, depending on the type of gas you use. With LP gas, some yellow tipping on the outer cones is normal. The broil burner will cycle off when the sensor temperature reaches 460°F (238°C) set on Lo Broil, and at 570°F (299°C) set on Hi Broil.

  • Page 48: Lock Motor And Latch Circuit

    LOCK MOTOR and LATCH SWITCH CIRCUIT The lock motor circuit and the door latch switch circuit control the locking and unlocking of the door. The lock motor is energized when the SELF CLEAN cycle is initiated with the door closed. The lock motor circuit applies voltage (120 V ) to the lock motor.

  • Page 49: Clean And Lock Sequence

    CLEAN and LOCK SEQUENCE Programming the Clean Cycle: Press SELF-CLEAN pad. 4 hours and 20 minutes (4:20) appears on the time display. (Cleaning time can be changed from the 4 hour and 20 minute starting point by pressing the SELF-CLEAN pad a second time.) After START has been pressed, the word ON illuminates in red and the word LOCKED flashes to indicate the cycle has begun.

  • Page 50: Service Test Mode

    SERVICE TEST MODE The sealed burner 30" gas range has a service test mode that can be utilized by the service technician in order to test certain oven components or functions. The selected components or functions will help the service technician to quickly identify failed or improper operation of the range.

  • Page 51: Test Mode Chart

    TEST MODE CHART Component/Function Action SENSOR Touch COOK TIME. The display will show the sensor temperature in the temperature digits. BAKE Touch BAKE then hold START. The START key will initiate the bake cycle as long as it is held. BROIL Touch BROIL HI/LO then hold START.

  • Page 52: Failure Codes (F-Codes)

    FAILURE CODES The oven may stop operating but not give an F-code on the display immediately. Generally, a fault must exist continuously for 5 minutes before an F code is recorded (F2 is sooner). F-codes are stored in non-volatile EEPROM memory until the same fault occurs twice consecutively.

  • Page 53: Key Panel Test

    KEY PANEL TEST The key panel and ERC are separate components but must be tested together. Press each pad on the key panel followed by the START pad. If the key panel is functioning properly, the following should occur: BAKE, CONV. BAKE, CONV. ROAST, BROIL HI/LO, COOK TIME, DELAY START, WARMING DRAWER SET/OFF, SELF CLEAN, CLOCK, TIMER ON/OFF, and CONTROL LOCKOUT Modes –...

  • Page 54: Parts List

    USE & CARE MANUAL 1 EBZ37171903 CONVERSION KIT ASM 1 EBZ37171904 INTALLATION INSTRUCTIONS 1 EBZ37171905 PM MINI MANUAL/ELEC. DIA 2 EBZ37189603 LG KNOB ASSEMBLY 3 EBZ37188201 ORIFICE-LP MED .89MM LF 3 EBZ37188202 ORIFICE-LP SM RR/CENTER 3 EBZ37188203 ORIFICE SPUD (VIS) LR 3 EBZ37188204...
  • Page 55 Loc # Part No Description 25 EBZ37186405 ORIFICE HOLDER ASM 26 EBZ37170204 BURNER BAKE 27 EBZ37171702 TUBE BURNER SUPPLY 28 EBZ37170503 SCREW MTG IGNITER 28 EBZ37170504 SCREW MTG IGNITER 29 EBZ37171101 ELBOW HI BROIL 30 EBZ37170202 BURNER BROIL 32 EBZ37170203 INSULATION BURNER BOX 37 EBZ37169807 COVER IGNITER...
  • Page 56 Loc # Part No Description 118 EBZ37170801 PIN LOCATOR 121 EBZ37170520 SCREW 121 EBZ37170521 SCREW 122 EBZ37170522 SCREW CKTP 146 EBZ37169809 CLIP RANGETOP 150 EBZ37192709 CAP-BURNER MED (GRAY) 151 EBZ37192710 CAP-BURNER SMALL (GRAY) 152 EBZ37192711 CAP-BURNER LARGE (GRAY) 153 EBZ37192712 CAP BURNER ASM (15K) 154 EBZ37170523 ELECTRODE TOP...
  • Page 57 Loc # Part No Description 211 EBZ37170515 BOTTOM OVEN SCREW 212 EBZ37169815 SPEEDNUT 213 EBZ37169816 NUT SPEED 214 EBZ37171801 DUAL COMBI ASSY 218 EBZ37171601 IGNITER GLOWBAR 218 EBZ37171602 IGNITER GLOWBAR 219 EBZ37169806 FLAME SPREADER 220 EBZ37169817 GROMMET 221 EBZ37171603 HEATING ELEMENT 222 EBZ37197401 HINGE ASM GUIDE 223 EBZ37197402...
  • Page 58 258 EBZ37214103 BRACE VENT 259 EBZ37197701 SLIDE & BEARING ASM RT 259 EBZ37197702 SLIDE & BEARING ASM LF 260 EBZ37214104 GASKET OVEN SEAL LG 261 EBZ37214105 INSULATION OVEN WRAP 262 EBZ37214122 INSULATION OVEN BACK 268 EBZ37169810 DEFLECTOR THERMOSTAT 269 EBZ37169803...
  • Page 59 Loc # Part No Description 277 EBZ37198007 GASKET OVEN LIGHT 278 EBZ37214110 GUARD TOP INSULATION 279 EBZ37171802 ONE SWITCH MOTOR LACTH 283 EBZ37214111 CLIP CABLE 284 EBZ37214112 BOTTOM OVEN BRACKT SUPPO 287 EBZ37214113 BAFLE 288 EBZ37214114 BRACE BOTTOM 289 EBZ37214115 LOWER HEAT SHIELD 290 EBZ37214116 SHIELD RADIATION...
  • Page 60 REFLECTOR 9.5 INCH 330 EBZ37215124 REFLECTOR 9.5 INCH 332 EBZ37215114 INSULATION SIDE DOOR 332 EBZ37215115 INSULATION BOTTOM DOOR 338 EBZ37215116 WINDOW PACK KIT LG 339 EBZ37215117 GUARD INSULATION 340 EBZ37215118 PANEL ASM WELD INNER 343 EBZ37215120 SLIDE INTERNAL 344 EBZ37215121...

  • Page 61: Exploded View

    EXPLODED VIEW GAS RANGE Page 60 of 72 TRAINING MANUAL...
  • Page 62 EXPLODED VIEW GAS RANGE Page 61 of 72 TRAINING MANUAL...
  • Page 63 EXPLODED VIEW GAS RANGE Page 62 of 72 TRAINING MANUAL...
  • Page 64 EXPLODED VIEW GAS RANGE Page 63 of 72 TRAINING MANUAL...

  • Page 65: Appendices

    INSTALLATION DIMENSIONS GAS RANGE Page 64 of 72 TRAINING MANUAL...

  • Page 66: Schematic And Wiring Diagrams

    SCHEMATICS AND WIRING DIAGRAMS GAS RANGE Page 65 of 72 TRAINING MANUAL...
  • Page 67 SCHEMATICS AND WIRING DIAGRAMS GAS RANGE Page 66 of 72 TRAINING MANUAL...

  • Page 68: Erc (Electronic Range Control) Test Locations

    ERC TEST LOCATIONS TEST POINTS CONNECTOR 2 Oven light Pin 1 Probe Line Pin 2 Ground Bake Pin 3 Unlock (Latch switch #1) Neutral Pin 4 Lock (Latch switch #2) Broil Pin 5 Common Warming drawer Pin 6 VDD (Sensor) Lock motor Pin 7 Blank Convection Fan High...

  • Page 69: Component Resistance Test Measurements

    COMPONENT RESISTANCE TEST MEASUREMENTS COMPONENT TEST LOCATION CONDITIONS RESISTANCE Oven light OL to L1 None 25Ω Bake ignitor Bake to N None 124Ω* Broil ignitor Broil to N None 164Ω* Warming WD OUT to N None 32Ω element Latch motor MDL to N Door Closed 1.97KΩ...

  • Page 70: Component Voltage Test Measurements

    COMPONENT VOLTAGE TEST MEASUREMENTS COMPONENT TEST LOCATION CONDITIONS VOLTAGE Oven light OL to N Door closed and oven light not 120 V selected ON from control panel Door open Door closed and oven light 120 V selected ON from control panel (relay clicks) Bake ignitor Bake to N...

  • Page 71: Oven Sensor And Door Switch Test

    OVEN SENSOR and DOOR SWITCH TEST Note! See Lock Motor and Door Latch Switch Circuit Information for door switch function explanation. Unplug the oven. Locate and disconnect the wire harness from the CN2 location on the ERC (main board). Make resistance measurement from the side of the wire harness connector with exposed terminals.
  • Page 72 GAS RANGE Page 71 of 72 TRAINING MANUAL...

  • Page 73: Notes

    NOTES GAS RANGE Page 72 of 72 TRAINING MANUAL...
  • Page 74 2007 Gas Range Training...

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