GE JP938 Electronic Touch Control Cooktops User Guide

: June 17, 2024
: GE

Table of Contents

GE JP938 Electronic Touch Control Cooktops
Product Information
FAQs
Introduction
Installation
Specifications
Cooktop Features and Controls
Heating Element Systems
Digital Control System
NONELECTRONIC MODELS
Old Heating Element
26 PIN RIBBON
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

GE JP938 Electronic Touch Control Cooktops

Product Information

Specifications

Model Series:
- Electronic: JP938, JP968
- Electric: JP340, JP350, JP930, JP960
Manufacturer: General Electric Company
Publication Number: 31-9070
Date: 01/01

Introduction

The controls lockout feature protects against power activation to a heating element during times of unintended usage or when cleaning the cooktop. And the convenient kitchen timer can be used with or without operating the heating elements to simplify any kitchen task that requires a countdown timer.

It’s easy to see how GE’s fresh ideas can make anyone more creative in the kitchen!

The information on the following pages will help you service these new electronic and electric cooktops effectively and efficiently.

Installation

Electrical junction box

The electrical junction box should be located 16 inches below the countertop.

Cutout Requirements

The cutout should not interfere with the cabinet structure at the front.

Model Specific Dimensions

Model| Overall Dimensions (in inches)| Cutout Dimensions (in inches)| Distance to Edge of Front Counter (in inches)
---|---|---|---
JP968WC/CC/BC| 36 x 20-3/8 x 3-1/4| 33-7/8 x 19-1/8 x 2-1/2| 2-1/2
JP960TC/CC/BC| 36 x 20-3/8 x 3-1/4| 33-7/8 x 19-1/8 x 2-1/2| 2-1/2
JP938WC/CC/BC| 29-3/4 x 20-7/8 x 3-1/4| 28-1/2 x 19-5/8 x 2-1/2| 2-1/2
JP930TC/CC/BC| 29-3/4 x 20-7/8 x 3-1/4| 28-1/2 x 19-5/8 x 2-1/2| 2-1/2
JP350TC/WC/CC/BC| 29-3/4 x 20-7/8 x 3-1/4| 28-1/2 x 19-5/8 x 2-1/2| 2-1/2
JP340WC/BC| 29-3/4 x 20-7/8 x 3-1/4| 28-1/2 x 19-5/8 x 2-1/2| 2-1/2
JP968SC| 36-1/8 x 21 x 3-1/4| 33-7/8 x 19-1/8 x 2-1/2| 2-1/2
JP960SC| 36-1/8 x 21 x 3-1/4| 33-7/8 x 19-1/8 x 2-1/2| 2-1/2
JP938SC| 29-7/8 x 21-1/2 x 3-1/4| 28-1/2 x 19-5/8 x 2-1/2| 2-1/2
JP930SC| 29-7/8 x 21-1/2 x 3-1/4| 28-1/2 x 19-5/8 x 2-1/2| 2-1/2

FAQs

Q: Who is this service guide intended for?
- A: This service guide is intended for individuals possessing adequate backgrounds of electrical, electronic, and mechanical experience.
Q: Can I repair the appliance myself?
- A: Any attempt to repair a major appliance may result in personal injury and property damage. It is recommended to seek professional assistance for repairs.
Q: How should I reconnect grounding devices after service?
- A: If grounding wires, screws, straps, clips, nuts, or washers used to complete a path to ground are removed for service, they must be returned to their original position and properly fastened.
Q: How should I disconnect power before servicing the product?
- A: To avoid personal injury, disconnect power before servicing this product. If electrical power is required for diagnosis or test purposes, disconnect the power immediately after performing the necessary checks.
Q: Can I reproduce this service guide?
- A: No, this service guide may not be reproduced in whole or in part in any form without written permission from the General Electric Company.

C

GE Consumer Home Services Training

TECHNICAL SERVICE GUIDE
Electronic Touch Control &
Electric Manual Control Cooktops

MODEL SERIES:
Electronic: JP938 JP968

Electric:

JP340 JP350 JP930 JP960

PUB # 31-9070 01/01

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!
IMPORTANT SAFETY NOTICE The information in this service guide is intended for use by individuals possessing adequate backgrounds of electrical, electronic, and mechanical experience. Any attempt to repair a major appliance may result in personal injury and property damage. The manufacturer or seller cannot be responsible for the interpretation of this information, nor can it assume any liability in connection with its use.
WARNING To avoid personal injury, disconnect power before servicing this product. If electrical power is required for diagnosis or test purposes, disconnect the power immediately after performing the necessary checks.
RECONNECT ALL GROUNDING DEVICES If grounding wires, screws, straps, clips, nuts, or washers used to complete a path to ground are removed for service, they must be returned to their original position and properly fastened.
GE Consumer Home Services Training Technical Service Guide Copyright © 2000
All rights reserved. This service guide may not be reproduced in whole or in part in any form without written permission from the General Electric Company.
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TabTleaobflCeoonfteCntos ntents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Specifications and Nomenclature5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Cooktop Features and Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Mechanical Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Component and Connector Locator Views . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Quiz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 [[Title]] 1
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Introduction

The new electronic cooktops make an eloquent statement of style, convenience, and kitchen planning flexibility. The electronic touch controls are simple to understand and easy to operatejust read and touch.
These cooktops include many helpful features. The pan detection feature automatically shuts the heating element OFF after 60 seconds of removing a metallic pan from the heater. The pan sizing feature adjusts the heated portion of the dual element to fit the size of a metallic pan. And the new warming feature keeps sauces and gravies warmor can be used as a normal heating element.

The controls lockout feature protects against power activation to a heating element during times of unintended usage or when cleaning the cooktop. And the convenient kitchen timer can be used with or without operating the heating elements to simplify any kitchen task that requires a countdown timer.
It’s easy to see how GE’s fresh ideas can make anyone more creative in the kitchen!
The information on the following pages will help you service these new electronic and electric cooktops effectively and efficiently.

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Installation

Counter Installation Dimensions (in inches)
13″ MAX. depth

Cooktop Dimensions (in inches)

W

D

Cooktop

A

30″ MIN. to unprotected cabinet
1-3/4″ to rear wall

18″ MIN. to cabinet

1-1/2″ MIN. clearance to
side wall from cut-out

F E

1-3/4″ MIN. clearance to
side wall from cut-out
Electrical junction box 16″ MIN. below countertop

G Required
Cut should not interfere with cabinet structure at front

GEA00791

Dimensions (in inches)

Overall

Cutout

To Edge of Front Counter ( M in. )

M odel JP968WC/CC/BC

W

D

A

E

F

G

36 20-3/8 3-1/4* 33-7/8 19-1/8 2-1/2

JP960TC/CC/BC

36 20-3/8 3-1/4* 33-7/8 19-1/8 2-1/2

JP938WC/CC/BC

29-3/4 20-7/8 3-1/4* 28-1/2 19-5/8 2-1/2

JP930TC/CC/BC

29-3/4 20-7/8 3-1/4* 28-1/2 19-5/8 2-1/2

JP350TC/WC/CC/BC 29-3/4 20-7/8 3-1/4* 28-1/2 19-5/8 2-1/2

JP340WC/BC

29-3/4 20-7/8 3-1/4* 28-1/2 19-5/8 2-1/2

Depth of unit at conduit connection location (rear) is 6-1/4″ on models JP968/938

and 4-5/8″ on models JP960/930/350/340.

GEA00792

Stainless Steel Cooktop Dimensions (in inches)

Overall

Cutout

To Edge of Front Counter (M in. )

M odel JP968SC

W

D

A

E

F

G

36-1/8 21 3-1/4* 33-7/8 19-1/8 2-1/2

JP960SC

36-1/8 21 3-1/4* 33-7/8 19-1/8 2-1/2

JP938SC

29-7/8 21-1/2 3-1/4* 28-1/2 19-5/8 2-1/2

JP930SC

29-7/8 21-1/2 3-1/4* 28-1/2 19-5/8 2-1/2

JP350SC

29-7/8 21-1/2 3-1/4* 28-1/2 19-5/8 2-1/2

Depth of unit at conduit connection location (rear) is 6-1/4″ on models JP968/938

and 4-5/8″ on models JP960/930/350.

GEA00793

36-in. and 30-in. Cooktops

Refer to installation instructions. Installation

cooktops are approved for use over select GE

requires an 18-in. minimum distance from

27-in. and GE 30-in. single wall ovens.

cooktop to adjacent overhead cabinets. Units are furnished with a 48-in. flexible armored cable.

Note: If installing with a GE Profile PerformanceTM or GE ProfileTM Telescopic Downdraft System,

Cooktop installation requires a 5-in. free area

consult both cooktop and downdraft installation

between the bottom of the cooktop and any

instructions packed with the products before

combustible material, such as shelving. This 5-in. installing. Cooktop electric supply may need to be

area is not required when installing a wall oven

rerouted to install the downdraft ventilation.

underneath the cooktop.

Note: Consult the cabinet and countertop

The 36-in. cooktops are approved for use over

manufacturer’s specs for flush-mount installation

GE 30-in. single wall ovens only. The 30-in.

prior to installing.

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Specifications

Grounding Specifications

Ground Path Resistance 0.10 ohms Max. Insulation Resistance 250K ohms Min.

Power Supply Requirements
The cooktop must be connected to a supply circuit of the proper voltage and frequency as specified on the rating plate. The rating plate is located on the side of the component box. Wire size must conform to the National Electrical Code or the prevailing local code.

Overcurrent Protection for Counter-Mounted Cooktops

NEC RATING
20 Amp 30 Amp 35 Amp 40 Amp 50 Amp

MAXIMUM KILOWATT RATING

208V 4.2 6.2 7.3 8.3 10.4

236V 4.7 7.1 8.3 9.4 11.8

240V 4.8 7.2 8.4 9.6 12.0

GEA00794
The branch circuit load for one countermounted cooktop is the rating on the nameplate of the appliance. The branch circuit load

for a counter-mounted cooktop and not more than two wall-mounted ovens all supplied from a single branch circuit and located in the same room shall be computed by adding the nameplate ratings on the individual appliances and treating this total as equivalent to one range.
Wiring
Built-in power leads are U.L. approved for connection to larger gauge household wiring. The insulation of these leads is rated at temperatures much higher than the temperature rating of household wiring. The current carrying capacity of a conductor is governed by the temperature rating of the insulation around the wire rather than the wire gauge alone.
WARNING: Improper connection of aluminum house wiring to these copper leads can result in a serious problem. Use only connectors designed for joining copper to aluminum and follow the manufacturer’s recommended procedure closely.

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Specifications and Nomenclature
For specifications table, refer to Cooktop Features and Controls, page 11.

Model Number

J P 9 6 8 B C

Product J = GE Cooking Product

Grate Type C = Continuous

Configuration

Glass Color

P = Cooktop Feature Pack

B = Black glass

Designates featuresthe higher

the number, the more features.

The serial plate of your cooktop is located on the bottom of the burner box. In addition to the model and serial numbers, this plate tells you the power ratings of the supply circuit for the cooktop.

Serial Number

The first two numbers of the serial number identify the month and year of manufacture. Example: AZ123456S = January, 2000

A – JAN D – FEB F – MAR G – APR H – MAY L – JUN M – JUL R – AUG S – SEP T – OCT V – NOV Z – DEC

2005 – H 2004 – G 2003 – F 2002 – D 2001 – A 2000 – Z 1999 – V 1998 – T 1997 – S 1996 – R 1995 – M 1994 – L

The letter designating the year repeats every 12 years.
Example: T – 1974 T – 1986 T – 1998

Note: The technical sheet is located under the control panel.
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Warranty Information

Sales slip or cancelled check is required as proof of original purchase date to obtain service under warranty. All warranty service is provided by our Factory Service Centers or an authorized Customer Care® technician.

For The Period Of:
One Year From the date of the original purchase

GE Will Replace:
Any part of the cooktop that fails due to a defect in materials or workmanship. During this full one-year warranty, GE will also provide, free of charge, all labor and in-home service to replace the defective part.

Five Years From the date of the original purchase

Glass-Ceramic Cooktop, Ribbon Heating Elements and Rubber Seal, if any of these parts should fail due to a defect in materials or workmanship.
During this limited additional four-year warranty, GE will replace the defective part free of charge, you will be responsible for service trips and labor charges.

What GE Will Not Cover:
· Service trips to your home to teach you how to use the product.

Replacement of house fuses or resetting of circuit breakers.
Improper installation.
· Failure of the product if it is abused, misused, or used for other than the intended purpose or used commercially.
· Damage to the glass cooktop caused by use of cleaners other than the recommended cleaning creams.
Damage to the product caused by accident, fire, floods, or acts of God.
· Incidental or consequential damage to personal property caused by possible defects with this applicance.
Damage to the glass cooktop caused by hardened spills of sugary materials or melted plastic that are not cleaned according to the directions in the Owner’s Manual.

This warranty is extended to the original purchaser and any succeeding owner for products purchased for home use within the USA. In Alaska, the warranty excludes the cost of shipping or service calls to your home.
Some states do not allow the exclusion or limitation of incidental or consequential damages. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. To know what your legal rights are, consult your local or state consumer affairs office or your state’s Attorney General.

Warrantor: General Electric Company, Louisville, KY 40225

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Cooktop Features and Controls

Throughout this manual, features and appearances may vary from the customer’s model.
The new Electronic Touch Control and Electric Manual Control Cooktops encompass over 20 models of cooktops. They include 30-in., 4-burner and 36-in., 5-burner radiant glass cooktop configurations.

Feature Index

JP968 (36-in.) Electronic Cooktop

Frameless Glass Cooktop
Electronic Touch Controls*
Pan Detection*
Pan Sizing*
Control Lock-out*
Kitchen Timer*
Ribbon-Type Heating Elements
7-in. Heating/Warming Element*

*Some Models, JP938 & JP968

JP938 (30-in.) Electronic Cooktop

JP930 (30-in.) Electric Cooktop

Ceramic Glass Surface
These cooktops feature a ceramic glass cooking surface over an electric radiant surface element. The electronic models feature touch controls on this glass surface that take the place of control knobs.
Appearance Defects
Scratches, marks from cooking utensils, discoloration, stains, spots, etc. can be caused by food soils, cookware, cleaning solutions, or water marks.

Before replacing the cooktop, try using the cooktop cleaning procedure outlined in the Owner’s Manual, using the cleaning cream and Scotch Brite® pad shipped with the product.
Note: When servicing the cooktop, care must be taken not to scratch or damage the glass.

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Heating Element Systems

The Haliant Surface Element consists of a ribbontype resistance wire attached to the support insulation with molded ceramic fiber walls in a corrosionprotected metal dish.
These circular heating elements come in the three sizes listed below.

Ribbon Heating Element Supporting Insulation

Hot Light

Ceramic Fiber Molded Wall

9″ Ribbon Heating Element
4
4 Supporting Insulation
Ceramic Fiber Molded Wall 6″ Ribbon Heating Element

6″ 240 Volt-1200 Watts 7″ 240 Volt-1500 Watts

9″ Dual Unit 240 Volt 2500 Watts (6″-1000W., 9″-1500W)
GEA00798

Bridge Element
The Bridge Element is made up of two 7-in., 1800 watt elements plus an 800 watt element between the two 7-in. elements. The elements consist of a ribbon- type resistance wire attached to support insulation with molded ceramic walls. The digital control on the electronic models (or the infinite heat switches on the electric models) regulates the 7-in. units independently of each other, or in combination when the bridge operating mode (or switch) is selected. The bridge and the left front element are regulated by the same controls.

7″-1800 Watt

Elements

RTD

Molded Ceramic
Wall

RTD
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800 Watt Bridge Element
GEA00902

Electronic Touch Controls (Some Models,
JP938 & JP968)
The touch controls provide precise control of the surface elements. You can quickly switch from a steady low heat to full power or any setting in between.

To turn ON a standard surface element, touch the ON/OFF pad, then touch the (+) or (-) pad. The surface element will energize to power setting 5. Use the (+) or (-) pads to choose the desired setting: L (low), 1-9, or H (high). The control will beep each time the pad is touched. To turn the surface element OFF, touch the ON/OFF pad again.

To turn ON the bridge element, set the left front surface element to the desired setting. Touch the BRIDGE pad. The bridge element will energize to the same level as the left front surface element …or, touch the ON/OFF pad for the left front surface element, then touch the BRIDGE pad. The left front and bridge elements will both energize to power setting 5. Using the (+) or (-) pads will control the setting for both elements. To turn the bridge element OFF, touch the BRIDGE pad again. Touching the ON/OFF pad will turn OFF both the left front and the bridge elements.

To turn ON a 9-in. dual surface element, touch the ON/OFF pad, then touch the (+) or (-) pad. The small surface element will energize to power setting 5. Touch the SIZE SELECT pad to energize both large and small surface elements. Use the (+) or (-) pads to choose the desired setting. To turn the large surface element OFF, touch the SIZE SELECT pad again. To turn both the large and small surface elements OFF, touch the ON/OFF pad.

To turn ON the warmer surface element, touch the ON/OFF pad, then touch the WARMER pad. If the surface element is already in use, touch the WARMER pad. The surface element will energize to the warmer power setting W1. Use the (+) or (-) pads to choose the desired warmer setting: W1, W2, or W3.
To turn OFF the warmer power setting, touch the WARMER pad again. The surface element will remain ON in power setting L (low). To turn OFF the surface element, touch the ON/OFF pad again.

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Indicator Lights Lights will come ON next to the bridge, warmer, dual unit, or control lockout pads when touched, to indicate the surface element or feature is energized. The light will go OFF when the surface element or feature is turned OFF.
HOT SURFACE Indicator Lights The HOT SURFACE indicator lights will glow when any surface unit is turned ON and will remain on until the surface has cooled to approximately 150°F.

TROL LOCK pad again for 3 seconds. A 2-beep signal will sound and the light will go out, indicating the cooktop is unlocked.
Locking the cooktop will prevent surface elements from accidentally being energized by children or pets. You may lock the cooktop when not in use or before cleaning.
Kitchen Timer
Operate the timer using the pad below the timer display. Touch the ON/OFF pad, then touch the (+) or (-) pad to choose the desired time setting. If the (+) or (-) pad is held for several seconds,

Controls Lockout
Note: For your convenience, the entire cooktop can be locked at any time.

the timer will increase or decrease at a faster rate. After choosing your desired time, the timer will automatically start to count down from the hours/minutes you have selected. When the timer reaches 1 minute, the control will beep once and the timer will display the remaining time in seconds until 00:00. The control will then beep twice every 5 seconds until the timer is turned OFF.
Pan Detection
Note: For this feature to function properly, the metallic pan must be at least 4 in. in diameter and centered on the surface element. This feature will not work with glass cookware and must be turned OFF when glass cookware is used.

To lock the cooktop, touch and hold the CONTROL LOCK pad for 3 seconds. A 2-beep signal will sound, the word LOCK will appear in the timer display, and the CONTROL LOCK light will turn ON indicating the cooktop is locked. If the cooktop is locked while the surface elements or timer are in use, they will automatically turn OFF.

To unlock the cooktop, touch and hold the CON-

The pan detection feature works in the following

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Built-In CleanDesign Cooktops

GE Profile Performance SeriesTM
Ribbon

Features

JP968SC JP968WC JP968CC JP968BC

JP960SC JP960TC JP960CC JP960BC

JP938SC JP938WC JP938CC JP938BC

Glass-ceramic surface Number of elements Dual 6″/9″ heating elements 8″ heating elements
7″ heating element 7″ heating elements
Bridge element Total wattage
6″ heating elements Hot surface indicator lights Electronic touch controls
Pan presence sensor Pan size sensor
Appearance

Patterned Black Patterned White Patterned Bisque Patterned Black
5 Ribbon
1 Ribbon (2500W)

Patterned Black
True White Patterned Bisque Patterned Black
5 Ribbon
1 Ribbon (2500W)

Patterned Black True White
Patterned Bisque Patterned Black
4 Ribbon
1 Ribbon (2500W)

1 Ribbon w/Warmer (1500W)
2 Ribbon (1800W) 1 Ribbon (800W)
4400W
1 Ribbon (1200W) 5
! ! !

1 Ribbon (1500W)

2 Ribbon (1800W) 2 Ribbon (1800W)

1 Ribbon (800W) 1 Ribbon (800W)

4400W

1 Ribbon w/Warmer

1 Ribbon (1200W)

(1200W)

5

4

!

Color appearance*

SS

WW

CC

BB

Fr am eless

Weights & Dimensions

Cooktop width (in inches)

36

30

Approx. shipping weight (lbs.)

45

44

38

Power/Ratings

KW rating @ 240V

9.6

8.1

208V

7.2

6.1

Amps @ 240V

40

208V

40

SS = Stainless Steel, WW = White on white, CC = Bisque, BB = Black on black.

JP930SC JP930TC JP930CC JP930BC
Patterned Black True White
Patterned Bisque Patterned Black
4 Ribbon 2 Ribbon (2500W)
2 Ribbon (1800W) 1 Ribbon (800W)
4400W
1 Ribbon (1200W) 4
SS WW CC BB
30 38
8.1 6.1 40 30

GE ProfileTM
Ribbon JP350SC JP350TC JP350WC JP350CC JP350BC
Patterned Black True White
Patterned White Patterned Bisque Patterned Black
4 Ribbon 2Ribbon (2500W) 2 Ribbon (2000W)
2 Ribbon (1200W) 4
SS WW WW CC BB
30 38
7.7 5.8 40 30

GE
Ribbon
JP340WC JP340BC
Patterned White Patterned Black
4 Ribbon 2 Ribbon (2000W)
2 Ribbon (1200W) 1
WW BB
30 35 6.4 4.8 30 30 GEA00806

manner: after energizing one of the heating elements, a pan must be placed on the surface element within 60 seconds. If a pan is not placed on the surface element within 60 seconds, the surface element will turn OFF. If a pan is removed from the surface element, the user has 60 seconds to replace it before the surface element is automatically turned OFF. The power level display will flash when the control on the surface element detects the absence of a pan.
To activate or deactivate the pan detection feature for all surface elements, touch the PAN pad. A signal will sound and a light next to the PAN pad will indicate whether the feature is active. If the light is ON, then the pan detection feature is ON. When the pan detection feature is OFF, the pan sizing feature is also OFF.

Pan Size Sensor
Note: This feature is only for the dual unit surface elements and functions only when the pan detection feature is turned ON.
When a small pan is placed on the surface element, the small surface element will activate. When a large pan is placed on the surface element, the small and large surface elements will activate. This feature may be overridden for a single cooking session while leaving the pan detection feature ON.
To activate or deactivate this feature and the pan detection feature, touch the PAN pad. The light next to the PAN pad will go out, indicating that both pan detection features are turned OFF.

Digital Control System

The control system consists of four circuit boards: the touch board (which is permanently adhered to the ceramic glass panel) that senses the user input, the display board that contains the panel displays, the logic board that contains the microprocessor, and the power board that does the power switching and control of the heating units.

Display Board

Ceramic Glass With Touch Board Permanently Adhered

If the touch board is damaged, the entire glass assembly must be replaced.
· If the display board is damaged, it can be replaced by removing the glass top and disconnecting the display board from the touch board.
· If the logic board is damaged, it can be replaced by removing the glass top and removing the logic board from the area under the keypad.
· If the power board is damaged, it can be accessed by removing the drop box cover that is under the cooktop.
Note: No individual components on the boards are replaceable.

Logic Board
Power Board

Burner Box Drop Box
Cover
GEA00807

Triac Voltage Control
A triac-fired control replaces the usual rheostat temperature control for each surface element. The control receives feedback from the temperature sensor to allow for precise control of the heating element power.

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Pan Detection
The pan detection system includes a pan sensor, an inductive sensor interface chip (ISIC) permanently mounted on the logic board, and a signal wiring harness connecting the sensor with the ISIC.

Technician Mode
To enter the Technician Mode, lock the cooktop by holding the CONTROL LOCK key for 3 seconds.

Temperature Sensor Sensor Connectors

Pan Sensor

Heater

Logic Board
GEA00766

The pan sensor determines the presence or absence of a pan through a change in the magnetic field. When a metal pan is near the sensor, the resonant frequency of the pan increases. This information is passed to the ISIC, which determines a pan to be present. When the frequency drops to a specified level, the ISIC determines the pan to not be present and turns the surface element OFF after 1 minute.

The control will beep 2 times and the word LOCK will be displayed in the timer display. Press the timer ON/OFF key and simultaneously press the + keys of the LF and LR surface elements. The timer display will flash TECH MODE when the cooktop is in Technician Mode.

Pan Size Feature

When the pan detection feature is active, the pan size feature is also active. The pan size feature is designed to automatically recognize the size of a pan placed on the dual heater and energize one or both cooking zones to match the size of the pan. The pan size feature is overriden when the DUAL key is pressed.

To exit the Technician Mode, simultaneously press the timer ON/OFF key and the (+) keys of the LF and LR surface elements, or unlock the cooktop by holding down the CONTROL LOCK key for 3 seconds. The control will beep 2 times and the
CONTROL LOCK LED will turn OFF.

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Fault Codes (F-codes)
When a fault code (F-code) occurs, an alarm will sound for 1 minute, the F-code will flash in the timer display, and F will flash in the display in the

To clear the F-code register, enter Technician Mode. While the timer display flashes TECH MODE, simultaneously press the BRIDGE and WARMER keys. The timer display will display DONE and the F-codes will be permanently deleted from the register.
Note: A complete fault codes table can be found at the end of this section.

Line-In Voltage Check
To check the line-in voltage, press the timer ON/ OFF key while in Technician Mode. Line-in voltage will appear in the timer display.

window of the failed surface element until acknowledged by touching the CONTROL LOCK key. The displays are then cleared. If the fault still exists, or if it recurrs when the user tries to activate a surface element, the F-code will redisplay.

Only the severest F-codes are immediately displayed. Less severe F-codes are recorded, then displayed based on the number of repeated occurrences.

The Technician Mode allows the last 9 F-codes to be recalled from the register and displayed on the timer display. The most recent F-code is displayed first (as #1). Pressing the TIMER (+) and TIMER (-) keys will scroll up and down the last 9 recorded F-codes.
The cooktop has multiple sensors, one for each surface element. Some F-codes include a sensor number associated with a surface element. The illustration below shows the sensor/surface element number for both cooktop configurations.

Temperature Check (in Celsius)
To check the temperature of a specific surface element, press that element’s ON/OFF key while in Technician Mode. C will display in the window of the specific surface element and the temperature will appear in the timer display.

Frequency Check (in Hertz) To check the frequency of a specific pan sensor, press the (-) key of that element while in Technician Mode. H will display in the window of the specific surface element. The frequency will appear in the timer display.
Calibration of the Inductive Pan Sensors Calibration of the inductive sensors is performed to permanently store the pan detection thresholds in a new logic board that has never been calibrated. Calibration is also performed to update the pan detection thresholds due to a physical change in the pan detection circuit, wiring, or sensor. Calibration of the inductive sensors is necessary and must be performed when any of the radiant surface elements (with an inductive sensor) are replaced or when the logic board is replaced. Note: The procedure for calibration of the inductive sensors can be found in the Mechanical Disassembly section.
16
q

Fault Code Behavior Table

NONELECTRONIC MODELS

Remove these screws

WARNING: Before servicing the cooktop, power must be removed from the cooktop by pulling the plug out of the outlet or turning the power off at the circuit breaker.

Glass and Cooktop Removal from Countertop
1. Remove all cooktop hold-down retainers from below the edge of the countertop.

Remove all screws from along the top edge on all 4 sides of the burner box. Remove the cooktop glass and place it top side down on a
protected surface.
Protect the counter with two strips of wood or cardboard as shown below.
3. Reach up from inside the cabinet and push upward on the bottom of the burner box enough to shim with protective wood or cardboard under one end. Repeat for the other end.
Caution: Screws on the bottom of the burner box can scratch the countertop surface. Use care to protect the countertop appearance.

Broken Glass Replacement
1. Remove the glass and cooktop from the countertop (see the previous procedure).
2. Remove the rubber grommets from the broken glass.
3. With a drop of liquid soap on your fingertip, wet the rims of all holes in the new glass and gently twist (do not force) the grommets through the holes.

ON Light Replacement
1. Remove the glass and cooktop from the countertop (see procedure).

GEA00847

Using the shims to get a handhold under the left and right sides of the glass, carefully raise the cooktop up about 4 in., rotate slightly left or right (to the best working advantage), and set down as shown. Lift each end slightly and adjust the wood or cardboard to prevent scratching the countertop.
Remove all knobs from the cooktop.
Compress the ON light wings, as shown, and pull down to remove from the bracket.
Remove the wires from the ON light.

Switch Replacement
1. Remove the glass and cooktop from the countertop (see procedure).

19
q

Remove 4 screws from the switch mounting bracket (2 from each end).
3. Remove 2 screws and the switch from the mounting bracket.
4. Tag and remove the wires from the switch. HOT SURFACE Light Replacement 1. Remove the glass and cooktop from the
countertop (see procedure).
2. Remove 2 screws from the burner box and remove the HOT SURFACE light mounting bracket.

LR Burner Switch
GEA00814
4. Remove 4 screws from the switch mounting bracket (2 from each end) and remove the red wire from the switch for the left rear burner.
5. Note the location and color of the wires in the wire harness, disconnect them from the burners, and remove.
Note: When installing the new HOT SURFACE light, be sure to feed the harness under the brace below the right-hand burners.
Burner Replacement
1. Remove the glass and cooktop from the countertop (see procedure).

With a small screwdriver, push in on the first light tab while pushing down on the light. Push in on the second light tab, while still pushing the light down, to release the light.
Note the position of the wires to the burner. Remove the wires.

20
q

ELECTRONIC MODELS
WARNING: Before servicing the cooktop, power must be removed from the cooktop by pulling the plug out of the outlet or turning the power off at the circuit breaker.

Mark Numbers Next to Tabs

Glass and Cooktop Removal from Countertop
Note: The ceramic glass and touch board shall be supplied as a complete assembly.
1. Remove all cooktop hold-down retainers from below the edge of the countertop.
2. Protect the counter with two strips of wood or cardboard as shown below.
3. Reach up from inside the cabinet and push upward on the bottom of the burner box enough to shim with protective wood or cardboard under one end. Repeat for the other end.
Caution: Screws on the bottom of the burner box can scratch the countertop surface. Use care to protect the countertop appearance.

GEA00817

Lift the burner off the springs and mark the numbers on the bottom of the burner next to the tabs.
Remove the tabs and install them on the new burner in the same numbered position.

Note: When installing the new burner, make sure the 2 springs are on the 2 posts.

GEA00847
4. Using the shims to get a handhold under the left and right sides of the glass, carefully raise the cooktop up about 4 in., rotate slightly left or right (to the best working advantage), and set down as shown. Lift each end slightly and adjust the wood or cardboard to prevent scratching the countertop.
Remove these screws

Remove all screws from along the top edge on all 4 sides of the burner box and slowly lift the front of the glass off the burner box.
21
q
With the glass tilted at an angle, disconnect the wire harness that extends from the logic board to the user interface by pulling upward on the connector. Do not pull on the wires.
7. Remove the glass from the top of the burner box and place top side down on a protected surface.
Touch Board and Cooktop Glass Replacement
Note: The ceramic glass and touch board shall be supplied as a complete assembly. Remove and replace the cooktop ceramic glass (see previous procedure).
Display Board Replacement
1. Remove the display board from the damaged piece of cooktop glass.
Prop the glass on the back of the cooktop. Using one hand to lower the glass, use the other hand to connect the wire harness from the display board to the 10-pin header on the logic board.
4. Lower the glass onto the burner box, being sure not to pinch any wires between the frame and the burner box.
5. Apply power to the cooktop. Once the cooktop appears to be in working order, remove power from the cooktop and insert all the screws to secure the glass to the burner box.
Logic Board Replacement
1. Remove the glass and cooktop from the countertop (see procedure).

Sensor

Place the display board on the new cooktop glass, making sure to connect the 8-pin ribbon cable to the touch board and the wire harness to the display board.

GEA00822
2. Disconnect the sensor connectors from the logic board by pulling upward on the connectors. Do not disconnect the connectors by pulling on the sensor wires.

22
q

Press Down on Latching Tabs

26-Pin Ribbon Cable
GEA00823
3. Disconnect the 26-pin ribbon cable from the logic board by pressing down on the latching tabs of the header.
Tabs
GEA00824
4. Remove the logic board by using needle nose pliers to press in on the tabs of the logic board standoffs, and lifting the board. Do not remove the logic board standoffs. Repeat this procedure for all 5 board standoffs.
Caution: To avoid delivering an electric shock to the new logic board, place your hand on the burner box for at least 2 seconds before reaching for the new logic board. 5. Remove the new logic board from the antistatic
bag and place it on top of the standoffs. Note: 30-in. cooktops do not have a connector placed on J503 (for the CR heater of a 36″ unit), and the connectors are keyed to prevent a misconnection. 6. Reconnect the 26-pin wire harness and the
sensor connectors to their original positions. 7. Examine the inside of the cooktop (heaters,
sensors, wires, and thermal wall) for anything that does not look normal.

10-Pin Header

GEA00848

Prop the glass onto the back of the cooktop. Using one hand to lower the glass, use the other hand to connect the wire harness from the user interface to the 10-pin header on the logic board.
9. Lower the glass onto the burner box, being sure not to pinch any wires between the frame and the burner box.
10. Apply power to the cooktop. An F161 is acceptable if a surface element is turned on with the pan detection feature active. This indicates the need to calibrate the inductive sensors.
11. Once the cooktop appears to be in working order, remove power from the cooktop and insert all the screws to secure the glass to the burner box.
Note: After the cooktop has been placed back into the consumer’s counter and power has been applied, the cooktop must be calibrated. Proceed to the Calibration Instructions for the Inductive Sensors.

Power Board Replacement
1. Remove the glass and cooktop from the countertop (see procedure).
2. Turn the cooktop 180 degrees and prop the cooktop up to access the drop box. Be careful not to damage the counter.

23
q

Remove 5 screws and the ground screw from the drop box cover and lower the cover.
Main Power Connector

26-Pin Cable

GEA00826

Disconnect the main power connector in the drop box.
5. Disconnect the 26-pin ribbon cable from the power board by pressing down on the latching tabs of the header.

Power Connector

Prop the glass onto the back of the cooktop. Using one hand to lower the glass, use the other hand to connect the wire harness from the user interface to the 10-pin header on the logic board.
10. Lower the glass onto the burner box, being sure not to pinch any wires between the frame and the burner box.
11. Apply power to the cooktop. Once the cooktop appears to be in working order, remove power from the cooktop and insert all the screws to secure the frame to the burner box.

Calibration Instructions for the Inductive Sensors

Disconnect the power connector in the burner box.
Caution: To avoid delivering an electric shock to the new power board, place your hand on the burner box for at least 2 seconds before reaching for the new power board.
7. Remove the new power board from the antistatic bag and reconnect the 26-pin wire harness, the main power connector, and the burner box power connector to their original positions.
8. Examine the inside of the cooktop (heaters, sensors, wires, and thermal wall) for anything that does not look normal.

Note: Calibration of the inductive sensors must begin with the LF surface element and proceed in a clockwise direction around the cooktop. All of the sensors must be calibrated to complete the calibration procedure. · Calibration of the inductive sensors must begin within 15 minutes of applying power to the cooktop.
1. Clear everything from the top of the glass.
2. Lock the control by pressing the control LOCK key for 3 seconds. The control LOCK LED will turn ON.
3. Enter tech mode by pressing the TIMER ON/OFF, LF (+), and LR (+) keys at the same time. The TIMER window will flash the words TECH MODE.
4. Begin the calibration procedure by pressing the TIMER ON/OFF, LF (+), and RF (+) keys at the same time. The TIMER window will flash CAL and the LF surface element power window will flash the U symbol.

24
q

When the TIMER window displays DISC and the U symbol stops flashing in the LF surface element power window, center the aluminum disk on the LF surface element.
Press the PAN and LF (+) keys at the same time. The electronic control will perform the calibration on the LF sensor and then proceed to the next surface element. The TIMER window will flash CAL and the U symbol will flash in the LR surface element power window.
Repeat steps 5 and 6 for the LR, CR (if present), RR, and RF surface elements.
8. After the RF surface element has been calibrated, the timer window will display a PASS or FAIL message for the entire calibration procedure. An F will be displayed in the surface element power window of any sensor that fails the process. Acknowledge this message and exit the calibration procedure by pressing the PAN and RF (+) keys at the same time.
Note: If the calibration proceedure is interupted for any reason, exit the calibration proceedure by pressing the PAN and RF (+) keys at the same time.
Note: Failure of the calibration procedure may occur for several reasons. If the calibration procedure fails, follow these steps:
· Try calibrating the cooktop again, beginning with step 1 from above.
Disconnect the appropriate sensor connector from the logic board by pulling upward on the connector. (Do not disconnect the connector by pulling on the sensor wires.) Trace the sensor wires back to the appropriate surface element, making note of where and how the wires are routed.
Caution: Do not cut the wire ties from the wire harness. Care must be taken to ensure that only the sensor wires to the surface element being replaced are cut.
Caution: Routing of the wires is extremely critical. Care must be taken to ensure the wires are routed exactly the way they were originally.

Remove Cut Wires From Wire Bundle

Sensor Wire Harness

Identify the sensor(s) that fails the calibration procedure.
· If multiple sensors fail the calibration procedure, replace the logic board.
· If only one sensor fails the calibration procedure, replace the corresponding surface element.
Surface Element Replacement
Note: The surface element, pan sensor, and temperature sensor are only replaceable as an assembly, which includes the sensor wire harness and connector.
1. Remove the glass and cooktop from the countertop (see the procedure).

Old Heating Element

Tie Wrap (Do Not Cut)
To Power Board
Surface Element Power Wires
GEA00756

Using diagonal cutters, snip both the temperature sensor and the pan sensor wires and remove them from the wire harness leading from the logic board to the surface element.

Note: When installing the new surface element, tie-wrap temperature sensor and pan sensor wires to the existing wire harness. Do not cut existing wire harness. Do not cut existing tie wraps.

Existing Wire Ties (Do Not Cut)

Tie-Wrap New Wires To Wire Bundle

New Heating Element
25
q

To Power Board
Surface Element Power Wires
GEA00861

Remove the electrical connectors form the heater.
5. Lift the heater off the springs and mark the numbers on the bottom of the heater next to the tabs.
Using a nut driver, remove the necessary screws from the outside of the burner box and lift the surface element support bracket to route the sensor wires beneath the bracket.
Run the connector through the gap between

the insulating strip and the thermal wall,

making a slit in the insulating strip if neces-

Remove the tabs and install them on the new

sary.

surface element in the same numbered position. 11. Place the connector on the appropriate header

Note: When installing the new surface element,

on the logic board.

make sure a spring is beneath every mounting

Beginning at the end of the wire harness

bracket.

closest to the surface element, secure the

Place the new surface element on the mounting posts.

sensor wires to the existing wire harness with wire ties. Trim the excess material from the wire ties and make sure the new wire harness

Position the sensor harness in the same manner

is in the same position as the original.

as the original harness was oriented, being sure

to keep all wires away from all surface elements.

26
q

Component and Connector Locator Views

JP968 (36-in.) Electronic Cooktop

26-Pin Ribbon Connector

Main Power Connector

Ceramic Glass Top

Power Board

Display Board Touch Board

Ceramic Glass Top

Sensor Connector

26-Pin Ribbon Connector

Display Board/Touch Board Assembly
User Interface to Logic Board Wire Harness

Temperature Sensor (RTD)

10-Pin Header

Logic Board

Burner Box

27
q

Pan Sensor

Support Bracket Heater

GEA00834

JP938 (30-in.) Electronic Cooktop

26-Pin Ribbon Connector

Main Power Connector

Ceramic Glass Top

User Interface to Logic Board Wire Harness

Power Board

Heater
Pan Sensor

Temperature Sensor (RTD)

Burner Box

Display Board
Power Connector

Touch Board
26-Pin Ribbon Connector

Sensor Connectors

10-Pin Header

Support Bracket
28
q

Logic Board

GEA00835

JP350 (30-in.) Electric Cooktop

Heater

Thermal Limiter

Switch
Switch Mounting Bracket

Burner Box

HOT SURFACE Lights

Support Bracket

ON Light

GEA00838

29
q

Schematics

30

INDUCTIVE

BRIDGE

SENSOR

LF

LB

LR

JP968 MODEL ONLY CR

RF2

WIRE

1800W

800W

1800W

1500W

RR

RF1

1500W

1 2
Yellow with
traces (jumper
wire)

R T D
12 J501 CONNECTOR

R

T D

R T D

12

J502

J503

1200W
R T D
12
J504

1000W

2

1 Blue

with

R

T

12

D

Blue

Black Traces

RTD Wire
J505 Example: Empty Pin

Inductive Sensor

CONDUIT

9-PIN POWER CONNECTOR
321 654 987

WIRING CHART

321 654
987
12 11 10 15 14 13 15-PIN CONTROL HEATER CONNECTOR

J102 J120 / J121 J104 J114 J111 J118 J101 J113 J112 J105 J115 / J116

J106 J108 J117

J115 / J116

J107

J122

J109 K107

J110 K106

K105

J120/J121

K

1 0

K102

4

K101

K J103

1 0

J119

3

RELAYS
POWER BOARD

J100

J602 J502 J501
J505 J504 J503

MAIN BOARD

4 32 1

(Pin 5) E (Pin 1) 10 Pin Ribbon

8 PIN RIBBON

DISPLAY BOARD
TOUCH BOARD

COLOR
YELLOW YELLOW ORANGE ORANGE
GRAY BROWN BROWN VIOLET BLUE/BLK
BLUE GRAY YEL/BLK

POWER BOARD REFERENCE
NUM BER
J101 J102 J103 J104 J105 J106 J107 J108 J109 J110 J111 J112 J113 J114 J115 J116 J117 J118 J119 J120 J121 J122

9-PIN POWER CONNECTOR
(PIN #)

15-PIN CONTROL/ HEATER CONNECTOR
(PIN #)
1 11 13 4 5 12 2 3 15 6 14 10

BURNER TERMINAL #
LF1 LF2 LR2 LR1 CR1 RR2 RR1 RF21 RF22 RF12 CR2 LB2

26 PIN RIBBON

Caution: Label all wires prior to disconnection when servicing the controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing.

GEA00903

q

Notes
31
q

Parts List
32
q

Ref No.
16 18 44 51 54 56 56 57 58 60 61 62 63 63 65 67 80 82 93 93 101 200 200 595 600 691 699 809 813

Part No.
WB27T10293 WB27T10294 WB02T10092 WB62T10088 WB02K5328 WB30T10066 WB30T10067 WB30T10065 WB30T10062 WB09K5014 WB64T10021 WB02K5318 WB02T10090 WB02T10091 WB34T10034 WB02X9502 WB34T10033 WB23T10014 WB34T10031 WB34T10032 WB35T10047 WB06T10007 WB06K5042 WB02X9867 WB1BT10160 WB01K5162 WB01K5150 WB01X1137 WB01X1261

Description
Logic Board Display Board Burner Box Grommet Glass Maintop Asm 36″ Hold Down Bracket Element Radiant Asm Element Radiant Asm Element Radiant Asm Element Radiant Asm Radiant Spring Burner Box Bottom Radiant Heater Bracket Element Support Bracket Element Support Bracket Drop Box Top Radiant Heater Stud Burner Box Bottom Shield Power Board Asm Thermal Barrier- Inner Thermal Barrier- Outer Burner Box Bottom Insulation Tape Foam Tape Harness Plate Conduit Wire Harness Screw-Black Screw ST10-16X.437 Hex zn Screw Screw

33
q

Qty.
1 1 1 1 1 1 1 1 1 8 1 8 2 1 1 8 1 1 1 1 1 1 2 1 1 20 31 2 2

34
q

Ref No. Part No.

Description

Qty.

820

WB01X1424

Screw

2

875

WH02X0930