LG LCE30845 User Manual 2

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Website: http://biz.lgservice.com

Ceramic Glass Induction Cooktop

SERVICE MANUAL

MODEL: LCE30845

CAUTION

BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

P/NO : MFL41578001

September, 2007

Printed in Korea

SAFETY PRECAUTIONS

FORWARD

This LG Service Manual, “30” Ceramic Glass Induction Cooktop,” provides the technician with information on the operation and service of the Ceramic Glass Induction Cooktop. It is to be used as a training Service Manual. For specific information on the model being serviced, refer to the “Owner’s Manual” or “Tech Sheet” provided with the Induction Cooktop.

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.

• Electrical leads and cables should not be allowed to touch the cooktop.

• Rating plate is located on the bottom side of cooktop.

• The power supply of the appliance should be turned off when it is being repaired.

WARNING: To avoid risk of severe personal injury or death, disconnect power before

working/servicing on appliance to avoid electrical shock. When the cooktop operates, the ceramic glass.

LG Electronics assumes no responsibility for any repairs made on our products by anyone other than Authorized Service Technicians.

WARNING: For your safety, the information in this manual must be followed to minimize

the risk of fire, electric shock, or to prevent property damage, personal injury, or death.

IMPORTANT NOTICE: RADIO INTERFERENCE

This unit has been tested and found to comply with the limits for a class B digital device, pursuant to Part 18 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.

This unit generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However there is no guarantee that interference will not occur in a particular installation. If this unit does cause harmful interference to radio or television reception, which can be determined by turning the unit off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the radio and/or television receiving antennae.

• Increase the distance between the cooktop unit and radio or television receiver.

• Connect the cooktop unit into an outlet or a circuit different from that to which the radio or television receiver is connected.

Only for training and service purposes

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SAFETY PRECAUTIONS

IMPORTANT SAFETY NOTICE

The California Safe Drinking Water and Toxic Enforcement Act requires the Governor of California to publish a list of substances known to the state to cause birth defects or other reproductive harm and requires businesses to warn customers of potential exposure to such substances.

SAFETY PRECAUTIONS

• Proper Installation: Be sure your appliance is properly installed and grounded by a

qualified technician in accordance with the National Electrical Code ANSI/NFPA No. 70, latest edition in the United States, and all local code requirements. Install only per installation instructions.

• Do not attempt to repair or replace any part of your cooktop unless it is specifically recommended in this manual. All other service should be referred to a qualified technician.

• Remove all tape and packaging wrap before using the appliance. Destroy the carton and plastic bags after unpacking the appliance. Never allow children to play with packaging material.

• The safety aspects of this appliance comply with accepted technical standards.

• Know how to disconnect the electrical power to the appliance at the circuit breaker or fuse box in case of an emergency. Mark the breaker or fuse for ease of identification and swift action if necessary.

• Do not repair or replace any part of the appliance. All servicing should be done only by a qualified technician to avoid the risk of personal injury and damage to the appliance.

• Never modify or alter the construction of an appliance such as removal of panels,

wire covers or any other permanent part of the product.

• Storage on appliance: Flammable materials should not be stored near or on the cooking surface. This includes paper, plastic and cloth items, such as cookbooks,

plasticware and towels, as well as flammable liquids. Do not store explosives, such as aerosol cans, on or near the appliance. Flammable materials may explode and result in fire or property damage.

• Do not leave children alone. Children should not be left alone or unattended in the area where an appliance is in use. They should never be allowed to sit or stand on any part of the appliance.

• Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.

CAUTION: Items of interest to children should not be stored in cabinets above a cooktop

or on the backsplash of a cooktop—children climbing on the cooktop to reach items could be seriously injured.

WARNING: Never use your appliance for warming or heating a room.

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Only for training and service purposes

SAFETY PRECAUTIONS

WARNING: Persons with a pacemaker or similar medical device should exercise caution

using or standing near an induction unit while it is in operation, as the electromagnetic field may affect the working of the pacemaker or similar medical device. It would be advisable to consult your doctor or the pacemaker or similar medical device manufacturer about your particular situation.

CAUTION: DO NOT touch Cooking Zones or areas near these surfaces. Cooking Zones

may be hot from residual heat even though they are dark in color. Areas near the Cooking Zones may become hot enough to cause burns. During and after use, do not touch or let clothing or other flammable materials touch these areas until they have had sufficient time to cool.

SAFETY PRECAUTIONS (cont.)

• Wear proper apparel. Loose-fitting or hanging garments should never be worn while using the appliance. Do not let clothing or other flammable materials contact hot surfaces.

• Do not use water or flour on grease fires. Smother the fire with a pan lid, or use baking soda, a dry chemical or foam-type extinguisher.

• When heating fat or grease, watch it closely. Fat or grease may catch fire if allowed to become too hot.

• Use only dry pot holders. Moist or damp pot holders on hot surfaces may result in burns from steam. Do not let the pot holders touch hot surface units. Do not use a towel or other bulky cloth instead of a pot holder.

• Do not heat unopened food containers. Buildup of pressure may cause the container to burst and result in injury.

ELECTRICAL SAFETY

WARNING: • If the surface is cracked, switch off the appliance to avoid the possibility of

electric shock. Do not reuse your COOKTOP until the glass surface has been changed.

• When using the COOKTOP, never use aluminum foil, products wrapped in aluminum foil, or deep-frozen food in aluminum cookware.

• If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard.

• The installation and connection of the new appliance must only be carried out by qualified personnel.

• Flush-mounted appliances may only be operated following installation in suitable cabinets and workplaces which conform to the relevant standards. This ensures sufficient protection against electric shock as required by certification agencies.

• If your appliance malfunctions or fractures, switch off all cooking zones, and contact Service Center.

Only for training and service purposes

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SAFETY PRECAUTIONS

CHILD SAFETY

WARNING: • This appliance is not intended for use by young children or infirm persons

unless they have been adequately supervised by a responsible person to ensure that they can use the appliance safely.

• Young children should be supervised to ensure that they do not play with the appliance.

• Accessible parts may become hot during use. Young children should be kept away.

SAFETY DURING USE

• This appliance may only be used for normal cooking and frying in the home. It is not

designed for commercial or industrial purposes.

• Do not use the cooktop to heat the room.

• Take care when plugging in electric appliances near the cooktop. Cords must not

come into contact with the hot surface. This could cause damage to the cooktop and cable insulation.

• Overheated fats and oils catch fire quickly. You should supervise cooking when

preparing foods in fat or oil.

• Switch off the Cooking Zones after use.

• Always keep the control panels clean and dry. Do not let liquids or grease remain on the

cooktop controls area. Spilled or burnt-on foods can activate or deactivate the appliance. Clean the controls area thoroughly to resume normal operation of the appliance.

• Never place combustible items on the cooktop.

• Never keep any combustible items or aerosol cans in a drawer located under the

cooktop.

• Avoid placing metal cooking utensils on the cooking surface areas. Metal objects can

become hot and cause burns.

• Know which touch keypad controls each surface of the cooking zones.

• Clean the appliance regularly to keep all parts free of grease that could catch fire.

Exhaust fan ventilation hoods and grease filters should be kept clean. Do not allow grease to accumulate on hood or filter. Greasy deposits in the fan could catch fire. Refer to hood manufacturer's instructions for cleaning.

• Use proper pan size. This appliance is equipped with one or more Cooking Zones of

different sizes.

• Select utensils having flat bottoms large enough to cover the Cooking Zones. The

pan detection sensors will not allow the affected cooking zones to operate without a pan present.

• Do not place any object on or near the control keypad area in order to prevent

accidental activation of the cooktop controls.

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Only for training and service purposes

SAFETY PRECAUTIONS

• Utensil handles should be turned inward and should not extend over adjacent cooking zones to reduce the risk of burns, ignition of flammable materials, and spillage

due to unintentional contact with the utensil.

• Never leave prepared food on the Cooking Zones. Boilovers cause smoking and greasy spillovers that may ignite, or a pan that has boiled dry may melt or become damaged.

• Protective liners: Do not use aluminum foil to line any part of the cooktop. Only use aluminum foil as recommended after the cooking process, if used as a cover to be placed over the food. Any other use of aluminum foil may result in the risk of electric shock, fire or short circuit.

• Glazed cooking utensils: Only certain types of glass, glass/ceramic, ceramic,

earthenware, or other glazed utensils are suitable for rangetop service without breaking due to the sudden change in temperature. Check the manufacturer’s

recommendations for cooktop use.

• Ventilating hood: The ventilating hood above your cooking surface should be

cleaned frequently, so the grease from cooking vapors does not accumulate on the hood or filter.

• Do not clean or operate a broken cooktop. If cooktop should break, cleaning solutions and spillovers may penetrate the broken cooktop and create a risk of electric shock. Contact a qualified technician immediately.

• Clean cooktop with caution. If a wet sponge or cloth is used to wipe spills on a hot cooking area, be careful to avoid a steam burn. Some cleaners can produce harmful fumes if applied to a hot surface.

SAFETY DURING USE

• Do not place hot cookware on cold cooktop glass. This could cause glass to break.

• Do not slide pans across the cooktop surface. They may scratch the cooktop surface.

• Do not let pans boil dry. This may cause permanent damage in the form of breakage, fusion, or marking that can affect the ceramic-glass cooktop. (This type of damage is not covered by your warranty.)

• Never leave surface units unattended at high heat settings. Boilover causes smoking and greasy spillovers that may ignite.

CAUTION: DO NOT pick up the supplied bridge pan handles after cooking. They might

be hot and there is a risk of burning yourself.

(cont.)

SAFETY WHEN CLEANING

• Always switch off the appliance before cleaning.

• For safety reasons, do not clean the appliance with a steam jet or high-pressure

cleaner.

• Clean the cooktop in accordance with the maintenance and cleaning instructions in this manual.

Only for training and service purposes

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SAFETY PRECAUTIONS

• Do not use harsh abrasive cleaners or rough metal scrapers to clean the cooktop glass since they can scratch the surface, which may result in shattering of the glass.

COOK MEAT AND POULTRY THOROUGHLY

Cook meat and poultry thoroughly—meat to at least an INTERNAL temperature of 160°F and poultry to at least an INTERNAL temperature of 180°F. Cooking to these temperatures usually protects against foodborne illness.

HOW TO AVOID DAMAGE TO THE APPLIANCE

• Prior to using your cooktop for the first time, apply the recommended cooktop cleaning creme to the ceramic surface. Buff with a non-abrasive cloth or pad. This will make cleaning easier when soiled from cooking. The special cooktop cleaning cream leaves a protective finish on the glass to help prevent scratches and abrasions.

• Do not use the cooktop as a work surface or storage space.

• Please be careful at the edges when moving pots and pans around.

• Do not have the cooking zones on with empty pans, or with no pots or pans on them.

• Ceramic glass is very tough, and impervious to sharp temperature changes but is not unbreakable. It can be damaged if particularly hard or sharp objects fall onto it.

• Be very cautious if using pots made of cast iron, or other pots with rough edges or burrs. Moving these can cause scratches on glass.

• If sugar or a mixture containing sugar falls onto a hot cooking zone and melts, remove immediately, while still hot. If left to cool down, it may damage the surface when removed.

NOTE: There is a risk of burning yourself when the glass scraper is used on a hot cooking zone!

• Keep meltable objects or materials away from the ceramic glass surface, for example, plastic utensils, aluminum foil, or cooking wraps. If any materials or foodstuffs melt on the ceramic-glass surface, these should be cleaned up immediately.

DISPOSAL OF OLD APPLIANCES

To protect the environment, it is important that worn-out appliances are disposed of in the correct manner.

• The appliance must not be disposed of with household rubbish.

• You can obtain information about collection dates or public refuse disposal sites from your local health council or environmental health office.

CAUTION: Before disposing of old appliances please make them inoperable so they

cannot be a source of danger. To do this, have a qualified person disconnect the appliance from the house circuitry.

READ AND FOLLOW THIS SAFETY INFORMATION CAREFULLY.

SAVE THESE INSTRUCTIONS

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Only for training and service purposes

CONTENTS

SAFETY PRECAUTIONS

CONTENTS

SPECIFICATIONS

INSTALLATION INSTRUCTIONS

INDUCTION

CLEANING AND CARE

DESCRIPTION OF THE FEATURE

THE KEY FEATURES OF HOB APPLIANCE

OPERATING INSTRUCTIONS

ELECTRIC CIRCUIT DRAWING

DISASSEMBLY THE COOKTOP

TROUBLE SHOOTING

EXPLODED VIEW

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1-7

10-16

17-19

21-22

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23-28

30-42

43-45

46-47

REPLACEMENT PARTS LIST

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Only for training and service purposes

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SPECIFICATIONS

ITEM DESCRIPTION

MODEL

Power Requirement

Max power

INDUCTION

LEFT FRONT

RIGHT FRONT

LEFT REAR

RIGHT REAR

Cooling Fan motor

Control

Timer

Cook top Dimensions

Countertop Cutout Dimensions

LCE30845

240/208 VAC, 60 Hz.

7.4 kW/6.8 kW

1800W (2400W Boost)

1400W (1800W Boost)

1800W (2400W Boost)

2400W (3300W Boost)

(12 V DC, 5.5W) X 2EA

GLASS TOUCH CONTROL

(CAPACITANCE METHOD)

1~99 minute

3013⁄16 (783 mm) (W) x 23⁄16 (56 mm) (H) x 211⁄2 (546 mm) (D)

Min 293⁄8 (746 mm) (W) x 201⁄4 (515 mm) (D)

Max 291⁄2 (749 mm) (W) x 203⁄8 (518 mm) (D)

Shipping Weight

* The rated power consumption may vary according to pan size and type.

About 52.3lb(23.7kg)

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Only for training and service purposes

INSTALLATION INSTRUCTIONS

INSTALLATION AND SERVICE MUST BE PERFORMED BY A QUALIFIED INSTALLER. IMPORTANT: SAVE THESE INSTRUCTIONS FOR LOCAL ELECTRICAL INSPECTOR’S USE. READ AND SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE.

BEFORE YOU BEGIN

Read these instructions completely and carefully.

NOTES TO INSTALLER:

• Read all instructions contained in these installation instructions before installing the cooktop.

• Remove all packing material before connecting the electrical supply to the cooktop.

• Observe all governing codes and ordinances.

• Only certain cooktop models may be installed over certain built-in electric oven models.

• Be sure to leave these instructions with the consumer.

NOTE TO CONSUMER:

Keep this User’s Guide and Installation Instructions for future reference.

NOTE: This appliance must be properly grounded. Damage caused by failure to follow these instructions is not covered by the cooktop

warranty.

UNPACKING THE COOKTOP

Unpack and visually inspect the cooktop for any damage or missing components.

Be sure the bottle of cleaner and conditioner packed in the literature bag is left where the user can find it easily. It is important that the ceramic-glass cooktop be pretreated before use. See CARE AND CLEANING.

Only for training and service purposes

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INSTALLATION INSTRUCTIONS

PREPARING THE INSTALLATION LOCATION

IMPORTANT INSTALLATION INFORMATION

• All electric cooktops run off a single phase, three-wire or four-wire cable, 240/208 volt, 60 hertz, AC-only electrical supply with ground.

• Minimum distance between cooktop and overhead cabinetry is 30

** Do not obstruct these areas!

30” Min.

(76.2 cm)

(76.2 cm).

4" X 8" (10.2 cm x 20.3 cm) opening to route armored cable if panel is present.

All dimensions are stated in inches and millimeters (mm). Allow 2

(5 cm) space below the armored cable opening to clear the electric cable and

allow space for installation of the junction box on the wall at the back of the cooktop.

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Only for training and service purposes

INSTALLATION INSTRUCTIONS

DIMENSIONS AND CLEARANCES

Overhead cabinet should not exceed a maximum depth of 13” (33 cm).

30” (76.2 cm) min. clearance between the top of the cooktop and the bottom of an unprotected wood or metal cabinet.

24” (61 cm) min. when bottom of wood or metal cabinet is protected by not less than 1/8” flame-retardant millboard covered with no less than No. 28 MGS sheet steel, 0.015” (0.4 mm) stainless steel, 0.024” (0.6 mm) aluminum, or 0.020” (0.5 mm) copper.

Min. recommended distance between rear edge of cutout and nearest combustible surface.

Min. from edge of cooktop to nearest combustible wall (either side of unit).

Empty space is needed underneath the cooktop for installation purposes.

Approximate location of junction box.

Model H L

30” 71/2” (191mm) 11/2” (38mm)

CAUTION: To eliminate the risk of burns or fire by reaching over heated surfaces, cabinet

storage space located above the cooktop should be avoided. If cabinet storage is provided, risk can be reduced by installing a range hood that projects horizontally a minimum of 5” (12.7 cm) beyond the face of the cabinets.

Only for training and service purposes

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INSTALLATION INSTRUCTIONS

ELECTRICAL CONNECTIONS

IMPORTANT SAFETY INSTRUCTIONS

• Be sure your cooktop is installed and grounded properly by a qualified installer or service technician.

• This cooktop must be electrically grounded in accordance with local codes or, in their absence, with the National Electrical Code ANSI/NFPA No. 70, latest edition in the United States.

PROVIDING THE ELECTRICAL CONNECTION

Install the junction box under the cabinet and run 120/240 or 120/208 volt, AC wire from the main circuit panel.

NOTE: DO NOT connect the wire to the circuit panel at this time.

WARNING: The electrical power to the cooktop must be shut off while line connections are

being made. Failure to do so could result in serious injury or death.

ELECTRICAL REQUIREMENTS

Observe all governing codes and local ordinances.

A 3-wire or 4-wire single-phase 120/240 or 120/208 volt, 60 Hz AC-only electrical supply is required on a separate circuit fused on both sides of the line (time-delay fuse or circuit breaker is recommended). DO NOT fuse neutral. The fuse size must not exceed the circuit rating of the appliance specified on the nameplate.

This unit can consume up to 7,400W at 240 VAC. A 40 Amp circuit breaker with wire gauge #8 AWG must be used.

NOTE: Wire sizes and connections must conform with the fuse size and rating of the appliance in accordance with the National Electrical Code ANSI/NFPA No. 70, latest edition, and local codes and ordinances.

The appliance should be connected to the fused disconnect (or circuit breaker) box through flexible armored or nonmetallic sheathed cable. The flexible armored cable extending from this appliance should be connected directly to the grounded junction box. The junction box should be located as shown on page 22 with as much slack as possible remaining in the cable between the box and the appliance, so it can be moved if servicing is ever necessary.

A suitable strain relief must be provided to attach the flexible armored cable to the junction box.

WARNING: An extension cord must not be used with this appliance. Such use may result

in a fire, electrical shock, or other personal injury.

ELECTRICAL CONNECTIONS (cont.)

ELECTRICAL CONNECTION

Connect the flexible armored cable that extends from the surface unit to the junction box using a suitable strain relief at the point the armored cable enters the junction box. Then make the electrical connection as follows.

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Only for training and service purposes

INSTALLATION INSTRUCTIONS

Cable from power supply

White wire (neutral)

Red wires

Black wires

Green wire (ground)

Cable from cooktop

UL-listed conduit connector

Junction box

Electrical ground is required on this appliance.

This appliance is manufactured with a supply wire and a frame connected green or bare copper grounding wire.

NOTE TO ELECTRICIAN: The armored cable leads supplied with the appliance are UL-listed for connection to larger gauge household wiring. The insulation of the leads is rated at temperatures much higher than the temperature rating of household wiring. The currentcarrying capacity of the conductor wire is governed by the temperature rating of the insulation around the wire, rather than the wire gauge alone.

WARNING: DO NOT ground to a gas supply pipe. DO NOT connect to electrical power

supply until appliance is permanently grounded. Connect the ground wire before turning on the power.

WARNING: This appliance is equipped with a copper conductor flexible cable. If

connection is made to aluminum house wiring, use only special connectors which are approved for joining copper and aluminum wires in accordance with the National Electrical Code and local codes and ordinances. Improper connection of aluminum house wiring to copper leads can result in a short circuit or fire. Follow the connector manufacturer’s recommended procedure closely.

WHERE LOCAL CODES PERMIT CONNECTING THE APPLIANCE-GROUNDING CONDUCTOR TO THE NEUTRAL (WHITE) WIRE

Observe all governing codes and local ordinances.

3-WIRE GROUNDED JUNCTION BOX

Disconnect the power supply.

At the circuit breaker box, fuse box or junction box, connect appliance and power supply cable wires as shown.

WARNING: You may not ground the cooktop

through the neutral (white) wire if cooktop is used in a new branch circuit installation (1996 NEC), mobile home, recreational vehicle, or where local codes do not permit grounding to the neutral (white) wire. When grounding to the neutral (white) wire is prohibited, you must use a 4-wire power supply cable. Failure to heed this warning may result in electrocution or other serious personal injury.

Only for training and service purposes

- 14 -

INSTALLATION INSTRUCTIONS

Cable from power supply

Ground wire

Black wires

Green wire(ground)

Cable from cooktop

UL-listed conduit connector

Junction box

Red wires

White wire (no connection)

ELECTRICAL CONNECTIONS (cont.)

IF COOKTOP IS USED IN A NEW BRANCH CIRCUIT INSTALLATION (1996 NEC), MOBILE HOME, RECREATIONAL VEHICLE, OR WHERE LOCAL CODES DO NOT PERMIT GROUNDING TO THE NEUTRAL (WHITE) WIRE

Observe all governing codes and local ordinances.

Disconnect the power supply.

At the circuit breaker box, fuse box or junction box, connect appliance and power supply cable wires as shown.

WARNING: If connecting to a 4-wire power

supply cable electrical system, the appliance frame connected ground wire MUST NOT be connected to the neutral wire of the 4-wire electrical system.

COOKTOP INSTALLATION

Visually inspect the cooktop for damage. Make sure all cooktop screws are tight (see below for locations).

4-WIRE GROUNDED JUNCTION BOX

Carefully lower the cooktop into the counter-top cutout, making sure not to trap any wires. NOTE: Do not use caulking compound. The cooktop must be removable, should service be required.

WARNING: Do not remove the nylon spacers

on the edges of the cooktop. These spacers center the cooktop in the space provided. The cooktop must be centered to allow proper venting and to prevent excess heat buildup that may result in heat damage or fire.

Screws

Nylon spacers

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Only for training and service purposes

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