Ge JP340, JP938, JP968, JP960, JP930 User Manual

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C
GE Consumer Home Services Training
TECHNICAL SERVICE GUIDE
Electronic Touch Control
&
Electric Manual Control
Cooktops
MODEL SERIES:
Electronic: JP938
Electric: JP340
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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Table of Contents
Table of Contents
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]]
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Page 4
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 operate–just 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 warm–or 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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Page 5
Installation
Electrical junction box 16" MIN. below countertop
30" MIN. to
unprotected cabinet
Cut should not interfere with cabinet structure at front
1-3/4" MIN.
clearance to
side wall
from cut-out
1-1/2" MIN.
clearance to
side wall
from cut-out
18" MIN. to cabinet
1-3/4" to
rear wall
13" MAX.
depth
A
Cooktop
G
E
F
W
D
Counter Installation Dimensions (in inches)
Required
Cooktop Dimensions (in inches)
GEA00791
Dimensions (in inches)
Overall
Model JP968WC/CC/BC 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 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.
WD A E FG
29-3/4 20-7/8 3-1/4* 28-1/2 19-5/8 2-1/2
36-in. and 30-in. Cooktops
Refer to installation instructions. Installation requires an 18-in. minimum distance from cooktop to adjacent overhead cabinets. Units are furnished with a 48-in. flexible armored cable.
Cooktop installation requires a 5-in. free area between the bottom of the cooktop and any combustible material, such as shelving. This 5-in. area is not required when installing a wall oven underneath the cooktop.
The 36-in. cooktops are approved for use over GE 30-in. single wall ovens only. The 30-in.
Stainless Steel Cooktop Dimensions (in inches)
To Edge of Front
Cutout (Min.)
Counter
Model JP968SC 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
GEA00792
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.
cooktops are approved for use over select GE 27-in. and GE 30-in. single wall ovens.
Note: If installing with a GE Profile Performance™ or GE Profile™ Telescopic Downdraft System, consult both cooktop and downdraft installation instructions packed with the products before installing. Cooktop electric supply may need to be rerouted to install the downdraft ventilation.
Note: Consult the cabinet and countertop manufacturer’s specs for flush-mount installation prior to installing.
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Overall
WD A E FG
Cutout (Min.)
To Edge of Front Counter
GEA00793
Page 6
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
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.
NEC RATING
20 Amp 30 Amp 35 Amp 40 Amp 50 Amp
MAXIMUM KILOWATT RATING
208V 236V 240V
4.2 4.7 4.8
6.2 7.1 7.2
7.3 8.3 8.4
8.3 9.4 9.6
10.4 12.0
11.8
GEA00794
The branch circuit load for one counter­mounted cooktop is the rating on the name­plate of the appliance. The branch circuit load
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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Page 7
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
Configuration
P = Cooktop
Feature Pack
Designates features–the 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.
Grate Type
C = Continuous
Glass Color
B = Black glass
Serial Number
The first two numbers of the serial number identify the month and year of manufacture.
Example: AZ123456S = January, 2000
A - JAN 2005 - H D - FEB 2004 - G F - MAR 2003 - F G - APR 2002 - D H - MAY 2001 - A L - JUN 2000 - Z M - JUL 1999 - V R - AUG 1998 - T S - SEP 1997 - S T - OCT 1996 - R V - NOV 1995 - M Z - DEC 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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Page 8
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
Five Years
From the date of the original purchase
GE Will Replace:
Any part of the cooktop that fails due to a defect in materials or workman- ship. During this full one-year warranty, GE will also provide, free of charge, all labor and in-home service to replace the defective part.
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.
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.
Replacement of house fuses or resetting of circuit breakers.
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
1. Frameless Glass Cooktop
2. Electronic Touch Controls*
3. Pan Detection*
4. Pan Sizing*
5. Control Lock-out*
6. Kitchen Timer*
7. Ribbon-T ype Heating Elements
8. 7-in. Heating/Warming Element*
*Some Models, JP938 & JP968
JP938 (30-in.) Electronic Cooktop
JP968 (36-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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Page 10
Heating Element Systems
Bridge Element
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.
Ceramic Fiber Molded Wall
Hot
Light
9" Dual Unit 240 Volt 2500 Watts
9" Ribbon Heating Element
4
4
Supporting Insulation
Ceramic Fiber Molded Wall
6" Ribbon Heating Element
(6"-1000W., 9"-1500W)
GEA00798
Ribbon Heating
Element
7" 240 Volt-1500 Watts
Hot Light
6" 240 Volt-1200 Watts
Supporting Insulation
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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
Molded
Ceramic
Wall
RTD
RTD
800 Watt Bridge Element
GEA00902
Page 11
Electronic T ouch 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.
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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.
Page 12
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 SURF ACE 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.
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.
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 unlock the cooktop, touch and hold the CON-
The pan detection feature works in the following
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Page 13
Built-In CleanDesign Cooktops
GE Profile Performance Series
Ribbon
JP968SC JP960SC JP938SC JP930SC JP350TC
JP968WC JP960TC JP938WC JP930TC
JP968CC JP960CC JP938CC JP930CC JP350CC JP968BC JP960BC JP938BC JP930BC JP350BC JP340BC
Features
Patterned White
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
Patterned Black
5 Ribbon
1 Ribbon w/Warmer
(1500W)
2 Ribbon (1800W)
1 Ribbon (800W)
4400W 4400W 4400W 4400W
1 Ribbon (1200W)
554441
!!
!!
!!
Appearance
SS SS SS SS WW
WW WW WW WW WW
Color appearance* Frameless
CC CC CC CC CC WW BB BB BB BB BB BB
Weights & Dimensions
Cooktop width (in inches) Approx. shipping weight (lbs.)
36 36 30 30 30 30 45 44 38 38 38 35
Power/Ratings
KW rating @ 240V
208V 7.2 7.2 6.1 6.1 5.8 4.8
Amps @ 240V
208V 40 40 40 30 30 30
*SS = Stainless Steel, WW = White on white, CC = Bisque, BB = Black on black.
9.6 9.6 8.1 8.1 7.7 6.4
40 40 40 40 40 30
Patterned BlackPatterned Black
TrueWhite
Patterned BisquePatterned Bisque
Patterned Black
5 Ribbon
1 Ribbon (2500W)1 Ribbon (2500W)
1 Ribbon (1500W)
2 Ribbon (1800W)
1 Ribbon (800W)
1 Ribbon (1200W)
Patterned Black
True White
Patterned Bisque
Patterned Black
4 Ribbon
1 Ribbon (2500W)
2 Ribbon (1800W)
1 Ribbon (800W)
1 Ribbon w/Warmer
(1200W)
Patterned Black
True White
Patterned Bisque
Patterned Black
4 Ribbon
2 Ribbon (2500W)
2 Ribbon (1800W)
1 Ribbon (800W)
1 Ribbon (1200W)
GE Profile
Ribbon
JP350SC
JP350WC
Patterned Black
True White
Patterned White
Patterned Bisque
Patterned Black
4 Ribbon
2Ribbon (2500W)
2 Ribbon (2000W)
2 Ribbon (1200W)
SS
GE
Ribbon
JP340WC
Patterned White
Patterned Black
4 Ribbon
2 Ribbon (2000W)
2 Ribbon (1200W)
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 P AN p ad 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 P AN pad. The light next to the P AN pad will go out, indicating that both pan detection features are turned OFF.
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Page 14
Diagnostics
Table of Contents
Digital Control System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Triac Voltage Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Pan Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Technician Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Fault Codes (F-codes) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Line-In Voltage Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Temperature Check (in Celsius) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Frequency Check (in Hertz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Calibration of the Inductive Pan Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Fault Code Behavior Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
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Page 15
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.
Ceramic Glass With Touch Board
Display
Board
Logic
Board
Power Board
Permanently Adhered
Burner Box
Drop Box
Cover
GEA00807
• 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.
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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Page 16
Pan Detection
Temperature Sensor
Sensor Connectors
Technician Mode
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.
Temperature Sensor
Temperature Sensor Sensor Connectors
Sensor Connectors
Logic BoardLogic BoardHeaterHeaterPan SensorPan Sensor
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.
To enter the Technician Mode, lock the cooktop by holding the CONTROL LOCK key for 3 seconds.
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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Page 17
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
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 .
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 .
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.
2
1
34
5
2
1
4
5
Temperature Check (in Celsius)
To check the temperature of a specific surface element, press that element’s ON/OFF key while in T echnician Mode. C will display in the window of the specific surface element and the temperature will appear in the timer display .
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Page 18
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 –
Page 19
Fault Code Behavior Table
– 17 –
Page 20
Mechanical Disassembly
Table of Contents
Nonelectronic Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Glass and Cooktop Removal from Countertop . . . . . . . . . . . . . . . . . . . . . . . 19
Broken Glass Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
ON Light Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Switch Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
HOT SURFACE Light Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Burner Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Electronic Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Glass and Cooktop Removal from Countertop . . . . . . . . . . . . . . . . . . . . . . . 21
Touch Board and Cooktop Glass Replacement . . . . . . . . . . . . . . . . . . . . . . 22
Display Board Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Logic Board Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Power Board Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Calibration Instructions for the Inductive Sensors. . . . . . . . . . . . . . . . . . . . 24
Surface Element Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
– 18 –
Page 21
NONELECTRONIC 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.
Remove these screws
Glass and Cooktop Removal from Countertop
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.
6. 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.
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
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.
5. Remove all knobs from the cooktop.
2. Compress the ON light wings, as shown, and pull down to remove from the bracket.
3. Remove the wires from the ON light.
Switch Replacement
1. Remove the glass and cooktop from the countertop (see procedure).
– 19 –
Page 22
2. 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 SwitchLR 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 SURF ACE 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).
3. 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.
2. Note the position of the wires to the burner. Remove the wires.
– 20 –
Page 23
Mark Numbers
Mark Numbers
Mark Numbers Next to Tabs
Next to Tabs
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 .
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
3. Lift the burner off the springs and mark the numbers on the bottom of the burner next to the tabs.
4. 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
5. 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 –
Page 24
6. 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.
3. 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.
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.
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).
SensorSensor
GEA00822
2. 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.
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 –
Page 25
Press Down on Latching TabsPress Down on Latching Tabs
26-Pin
26-Pin Ribbon Cable
Ribbon Cable
GEA00823
3. Disconnect the 26-pin ribbon cable from the logic board by pressing down on the latching tabs of the header .
10-Pin
10-Pin
Header
Header
GEA00848
8. 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.
TabsTabs
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.
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 ac-
ceptable 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.
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.
– 23 –
Page 26
3. Remove 5 screws and the ground screw from
26-Pin Cable
Main Power Connector
Power
Connector
the drop box cover and lower the cover.
Main Power Connector
Main Power Connector
26-Pin Cable
26-Pin Cable
GEA00826
4. 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
Power
Connector
Connector
9. 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.
6. 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 anti-
static 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.
Calibration Instructions for the Inductive Sensors
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 –
Page 27
5. 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.
6. 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.
7. 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 F AIL 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:
• T ry calibrating the cooktop again, beginning with
step 1 from above.
2. 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.) T race 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).
– 25 –
Old Heating
Element
Tie Wrap (Do Not Cut)
To Power Board
Surface Element Power Wires
GEA00756
3. Using diagonal cutters, snip both the tempera- ture 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
To Power Board
Surface Element Power Wires
GEA00861
Page 28
4. 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.
6. Remove the tabs and install them on the new surface element in the same numbered position.
Note: When installing the new surface element, make sure a spring is beneath every mounting bracket.
7. Place the new surface element on the mounting posts.
8. Position the sensor harness in the same manner as the original harness was oriented, being sure to keep all wires away from all surface elements.
9. 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.
10. Run the connector through the gap between
the insulating strip and the thermal wall, making a slit in the insulating strip if neces­sary.
11. Place the connector on the appropriate header
on the logic board.
12. Beginning at the end of the wire harness
closest to the surface element, secure the 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 is in the same position as the original.
– 26 –
Page 29
Heater
Component and Connector Locator Views
JP968 (36-in.) Electronic Cooktop
26-Pin Ribbon
26-Pin Ribbon
Connector
Connector
Main Power
Main Power
Connector
Connector
Power BoardPower Board
Ceramic Glass TopCeramic Glass Top
Display BoardDisplay Board
Touch BoardTouch Board
Ceramic
Ceramic
Glass Top
Glass Top
Sensor
Sensor
Connector
Connector
26-Pin Ribbon
26-Pin Ribbon
Connector
Connector
Display Board/Touch
Display Board/Touch Board Assembly
Board Assembly
User Interface to Logic
User Interface to Logic Board Wire Harness
Board Wire Harness
Temperature
Temperature
Sensor (RTD)
Sensor (RTD)
10-Pin Header10-Pin Header
– 27 –
Pan SensorPan Sensor
Support BracketSupport Bracket Heater
HeaterBurner BoxBurner BoxLogic BoardLogic Board
GEA00834
Page 30
JP938 (30-in.) Electronic Cooktop
26-Pin Ribbon
26-Pin Ribbon
Connector
Connector
Main Power
Main Power
Connector
Connector
Power
Power Board
Board
Ceramic
Ceramic
Glass Top
Glass Top
User Interface to Logic
User Interface to Logic
Board Wire Harness
Board Wire Harness
Pan
Pan
Sensor
Sensor
Burner
Burner
Box
Box
Display
Display
Board
Board
Temperature Sensor (RTD)Temperature Sensor (RTD)HeaterHeater
Power ConnectorPower Connector
Touch
Touch Board
Board
26-Pin Ribbon
26-Pin Ribbon
Connector
Connector
Sensor
Sensor
Connectors
Connectors
10-Pin
10-Pin Header
Header
– 28 –
Logic BoardLogic BoardSupport BracketSupport Bracket
GEA00835
Page 31
JP350 (30-in.) Electric Cooktop
HOT SURFACE
Burner BoxBurner Box HOT SURFACE
HOT SURFACE
Lights
Lights
HeaterHeater
Support
Support
Bracket
Bracket
Thermal LimiterThermal Limiter
ON LightON Light
SwitchSwitch
Switch
Switch
Mounting
Mounting
Bracket
Bracket
GEA00838
– 29 –
Page 32
– 30 –
INDUCTIVE
SENSOR
LF
BRIDGE
LB
LR
WIRE
1800W
R
T
D
1
2
J501 CONNECTOR
800W
2
1
1800W
R
T
D
1
Yellow
with
traces
(jumper
wire)
9-PIN POWER
CONNECTOR
3
12
6
4
5
9
7
CONDUIT
WIRING CHART
COLOR NUMBER (PIN #) (PIN #) TERMINAL #
YELLOW J101 1 LF1 YELLOW J102 11 LF2 ORANGE J103 13 LR2 ORANGE J104 4 LR1
GRAY J105 5 CR1 BROWN J106 12 RR2 BROWN J107 2 RR1
VIOLET J108 3 RF21
BLUE/BLK J109 15 RF22
BLUE J110 6 RF12
GRAY J111 14 CR2
YEL/BLK J112 10 LB2
GEA00903
BOARD REFERENCE CONNECTOR HEATER CONNECTOR BURNER
8
J122
J107
J115 / J116
J109
K107
J110
K106
POWER 9-PIN POWER 15-PIN CONTROL/
J113 L1 1 J114 L1 3 J115 L1 2 J116 L1 2 J117 L1 4 J118 L2 7 J119 L2 6 J120 L2 9 J121 L2 9 J122 a 8
K105
J120/J121
2
J106
J108
J117
K
1 0 4
J502
J102
J120 / J121
RELAYS
JP968 MODEL ONLY
CR
1500W
R T D
1
2
J104
J114
J111
J118
J113
J101
K102 K101
POWER BOARD
J112
J503
J105
K
1 0 3
RR
1200W
R T D
1
2
1
2
J505
15-PIN CONTROL
HEATER CONNECTOR
J115 / J116
J103
J119
J100
J504
1
3
2
6
4
5
9
7
8
12
11
10
15
13
14
J503
J501
J502
J504
J505
J602
MAIN BOARD
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.
RF2
1500W
1000W
R T D
Example:
Empty Pin
10 Pin Ribbon
8 PIN
RIBBON
RF1
Blue
RTD Wire
(Pin 5)
2
1
4
E
DISPLAY BOARD
TOUCH BOARD
Blue with Black Traces
Inductive
Sensor
123
(Pin 1)
Schematics
Page 33
Notes
– 31 –
Page 34
Parts List
– 32 –
Page 35
Ref No. Part No. Description Qty.
16 WB27T10293 Logic Board 1 18 WB27T10294 Display Board 1 44 WB02T10092 Burner Box Grommet 1 51 WB62T10088 Glass Maintop Asm 36” 1 54 WB02K5328 Hold Down Bracket 1 56 WB30T10066 Element Radiant Asm 1 56 WB30T10067 Element Radiant Asm 1 57 WB30T10065 Element Radiant Asm 1 58 WB30T10062 Element Radiant Asm 1 60 WB09K5014 Radiant Spring 8 61 WB64T10021 Burner Box Bottom 1 62 WB02K5318 Radiant Heater Bracket 8 63 WB02T10090 Element Support Bracket 2 63 WB02T10091 Element Support Bracket 1 65 WB34T10034 Drop Box Top 1 67 WB02X9502 Radiant Heater Stud 8 80 WB34T10033 Burner Box Bottom Shield 1 82 WB23T10014 Power Board Asm 1 93 WB34T10031 Thermal Barrier- Inner 1 93 WB34T10032 Thermal Barrier- Outer 1 101 WB35T10047 Burner Box Bottom Insulation 1 200 WB06T10007 Tape 1 200 WB06K5042 Foam T ape 2 595 WB02X9867 Harness Plate 1 600 WB1BT10160 Conduit Wire Harness 1 691 WB01K5162 Screw-Black 20 699 WB01K5150 Screw ST10-16X.437 Hex zn 31 809 WB01X1137 Screw 2 813 WB01X1261 Screw 2
– 33 –
Page 36
– 34 –
Page 37
Ref No. Part No. Description Qty.
820 WB01X1424 Screw 2 875 WH02X0930 Screw 8-18 AB HXW 3/8 8 925 WB01K5117 Washer .250IDX.8120D 8 926 WB01X1260 Ground Washer 1 962 WB02T10093 Standoff PCB 10 999 49-80021 Use & Care Manual 1 999 WB18T10162 Power Control Harness 1 999 WB18T10163 Heater Control Harness 1 999 WB18T10164 Logic Control Harness 1 999 WB18T10166 Logic Display Harness 1 999 WB18T10165 Main Wire Harness 1 999 WB64X0093 Glass Cleaner 1 999 31-10429 Instruction Install 1 999 WB50T10040 AASM Kit Flush (JXFMBB) 1 999 31-10034 PM Sheet Mini Manual 1 999 WB06K5036 Razor Blade Scraper 1
– 35 –
Page 38
Page 39
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