GE JK955, JKP20, JKP28, JKP48, JKP86 Technical Service Manual

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TECHNICAL SERVICE GUIDE
GE and Monogram
27-In. and 30-In. Wall Ovens
MODEL SERIES:
JCKSO6 JCKP20 JCK915 JK915 JK955 JKP20 JKP28 JKP48 JKP86 JKS06 JT912 JT915
JTC915 JT952 JT955 JT965 JTP20 JTP28 JTP48 JTP86 ZEK938 ZEK958 ZET938 ZET958
PUB # 31-9098 12/02
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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
T o 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 © 2002
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 ..........................................................................................................3
Nomenclature ...................................................................................................... 4
Warrantyz .............................................................................................................. 5
Control Panel Features5 ..................................................................................... 6
Oven .................................................................................................................... 17
Component Compartment Airflow.....................................................................19
Control Panel ...................................................................................................... 20
Control Voltage...................................................................................................21
Convection Bake Element and Fan Assembly.................................................36
Door Assembly .................................................................................................... 17
Door Hinge Assemblies ..................................................................................... 19
Door Hinge Replacement .................................................................................. 19
ERC Failure Codes ............................................................................................. 26
Electronic Oven Control System ...................................................................... 20
Electronic Range Control (ERC) ......................................................................20
Glass Touch Models Only.................................................................................. 25
Key Panel Test .................................................................................................... 22
Lift-Off Oven Door ............................................................................................. 17
Lock Thermal Switch.......................................................................................... 35
Motorized Door Lock ......................................................................................... 34
Ohmmeter Test ................................................................................................... 23
Oven Calibration ................................................................................................ 33
Oven Circuits ...................................................................................................... 32
Oven Door Gasket ............................................................................................. 18
Oven Sensor and Door Switch Ohmmeter Test ............................................. 30
Oven Thermal Switch ........................................................................................35
Sensor and Lock Switch Connectors............................................................... 31
Special Functions...............................................................................................30
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Page 4
Table of Contents
Table of Contents
Microwave
Refer to Pub # 31-9084, pages 29 through 44, for microwave service information and warranty for these products.
Schematics and Wiring DiagramsX .................................................................. 37
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Introduction
Model JKP48
Model JK915
Model ZET958
The new series of Built-In Electric Wall Ovens are offered in 27-inch and 30-inch models. They make an eloquent statement of style, convenience, and kitchen planning flexibility . In addition to the single oven and double oven models, a microwave-and­oven combination unit is available.
The Electronic Touch Controls are simple to understand and easy to operate. Just read and touch. 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 27-inch and 30-inch Built­In Electric Wall Ovens effectively and efficiently.
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Model Number
Nomenclature
J K P 8 6 C D 1 C C
GE Cooking Product ZE = Monogram Electric
Configuration
K = 27-in. Wall Oven T = 30-in. Wall Oven
Oven Type
P = Self Clean S = Standard
Feature Pack
Designates features–the higher the number, the more features.
Model ZEK938
Product Color
CC = Bisque WW = White BB = Black AA = Almond SS = Stainless Steel
Indicator for Engineering and Product Service Only
Model Year Designator
Glass Color
C = Bisque W = White B = Black A = Almond S = Stainless Steel
Serial Number
The first two characters of the serial number identify the month and year of manufacture. Example: AA123456S = January , 2001
Model/Serial Number
The model/serial number tag of your built-in oven is located behind the door on the front frame. For the double ovens, the tag is located in the upper oven. In addition to the model and serial numbers, this plate shows the power ratings of the supply circuit for the oven.
A - J AN 2005 - H D - FEB 2004 - G F - MAR 2003 - F G - APR 2002 - D H - MA Y 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
Note: The technical sheet is located under the control panel.
The letter designating the year repeats every 12 years.
Example:
T - 1974 T - 1986 T - 1998
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Built-In Electric Oven Warranty
For The Period Of: GE Will Replace:
One Year Any part of the oven which fails due to a defect in materials or workmanship.
From the date of the During this full one-year warranty, GE will also provide, free of charge, all labor original purchase and in-home service to replace the defective part.
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.
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 caused by possible
defects with this appliance.
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.
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 caused by possible
defects with this appliance.
What GE Will Not Cover:
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.
For The Period Of: GE Will Replace:
One Year Any part of the microwave cooking center which fails due to a defect in materials
From the date of the or workmanship. During this full one-year warranty, GE will also provide, original purchase free of charge, all labor and in-home service to replace the defective part.
Limited Additional A replacement magnetron tube if the magnetron tube fails because of a Four Years manufacturing defect. During this limited additional four-year warranty, you
For the second through will be responsible for any labor or in-home service. the fifth year from date of the original purchase
Microwave Cooking Center Warranty
Warranty
.
Warrantor: General Electric Company. Louisville, KY 40225
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Control Panel Features
1 BAKE. Press to select the bake function.
2 BROIL HIGH/LOW. Press to select the
broil function.
3 CONV BAKE/MULTI. Press to select baking
with convection on multiple racks.
4 CONV BAKE/1 RACK. Press to select
baking with convection on one rack.
5 CONV ROAST. Press to select roasting with
convection.
6 WARM/PROOF. Press once for warming or
twice for proofing. See the How to Set the Oven for Warming section and the How to Set the Oven for Proofing section.
7 START. Must be pressed to start any
cooking or cleaning function.
8 DISPLAY. Shows the operations you have
selected, the time of day and the cooking or cleaning status.
9 COOK TIME. Use for Timed Bake, Timed
Convection Bake and Timed Convection Roast operations.
10 DELAY START. Use along with the
COOK TIME or SELF CLEAN STD/LOW
pads to set the oven to start and stop automatically at a time you select.
11 SELF CLEAN STD/LOW. Press to select
the self-cleaning function. See the Using the Self-Cleaning Oven section.
12 PROBE. Press when using the probe to
cook food.
13 OVEN LIGHT ON/OFF. Press to turn the
oven lights on or off.
14 CLEAR/OFF. Press to cancel any oven
operation except the clock and timer.
15 TIMER ON/OFF. Press to select the
timer function. The timer does not control oven operations. The timer can time up to 9 hours and 59 minutes.
16 NUMBER PADS. Use to set any function
requiring numbers—for example, the time of day on the clock, the timer, the oven temperature, the internal food temperature, the starting and length of cooking time for Timed Bake and the starting and length of cleaning time for Self-Clean.
17 CLOCK. Press to enter the time of day.
If “F – and a number or letter” flash in the display and the oven control signals, this
indicates function error code. Press the CLEAR/OFF pad. Allow oven to cool for one hour. Put the oven back into operation. If function error code repeats, disconnect power to the oven and call for service.
Double oven control shown. (Appearance may vary.)
Oven Controls Models ZEK938, ZEK958, ZET938, and ZET958
Throughout this manual, features and appearance may vary from your model.
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BAKE Pad
Press to select the bake function.
BROIL HI/LO Pad
Press to select the broil function.
CONVECTION BAKE MULTI/1 RACK Pad
Press once to select convection baking with multiple racks. Press twice to select convection baking with one rack.
CONVECTION ROAST Pad
Press to select roasting with the convection function.
PROOF Pad
Press to select a warm environment useful for rising yeast-leavened products.
START Pad
Must be pressed to start any cooking or cleaning function.
Display
Shows the time of day, oven temperature, whether the oven is in the bake, broil or self-cleaning mode and the times set for the timer or automatic oven operations.
If “F– and a number or letter” flash in the display and the oven control signals, this indicates a function error code. Press the CLEAR/OFF pad. Allow the oven to
cool for one hour. Put the oven back into operation. If the function error code repeats, disconnect the power to the oven and call for service.
If your oven was set for a timed oven operation and a power outage occurred, the clock and all
programmed functions must be reset.
The time of day will flash in the display when there has been a power outage.
SELF CLEAN STD/LOW Pad
Press to select self-cleaning function. See the Using the self-cleaning oven section.
OVEN LIGHT ON/OFF Pad
Press to turn the oven light on or off.
DELAY START Pad
Use along with COOK TIME or SELF CLEAN STD/LOW pads to set the oven to start and
stop automatically at a time you set.
COOK TIME Pad
Press and then press the number pads to set the amount of time you want your food to cook. The oven will shut off automatically when the cooking time has run out, unless the WARM feature was set.
CLEAR/OFF Pad
Press to cancel ALL oven operations except the clock and timer.
CLOCK Pad
Press before setting the clock.
Number Pads
Use to set any function requiring numbers such as the time of day on the clock, the timer, the oven temperature, the internal food temperature, the start time and length of operation for timed baking and self-cleaning.
KITCHEN TIMER ON/OFF Pad
Press to select the timer feature.
PROBE Pad
Press when using the probe to cook food.
WARM Pad
Press to keep cooked foods warm. See the How to Set the Oven for Warming section.
5
Oven Control, Clock and Timer Features and Settings
Double oven control shown.
Oven Controls Models JK915, JK955, JT915, and JT955
Throughout this manual, features and appearance may vary from your model.
.
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Oven Controls
BAKE Pad
Press to select the bake function.
BROIL HI/LO Pad
Press to select the broil function.
CONVECTION BAKE Pad
Press to select baking with the convection function.
CONVECTION ROAST Pad
Press to select roasting with the convection function.
START Pad
Must be pressed to start any cooking or cleaning function.
Display
Shows the time of day, oven temperature, whether the oven is in the bake, broil or self-cleaning mode and the times set for the timer or automatic oven operations.
If “F– and a number or letter” flash in the display and the oven control signals, this indicates a function error code. Press the CLEAR/OFF pad. Allow the oven to
cool for one hour. Put the oven back into operation. If the function error code repeats, disconnect the power to the oven and call for service.
If your oven was set for a timed oven operation and a power outage occurred, the clock and all
programmed functions must be reset.
The time of day will flash in the display when there has been a power outage.
SELF CLEAN STD/LOW Pad
Press to select self-cleaning function. See the Using the self-cleaning oven section.
OVEN LIGHT ON/OFF Pad
Press to turn the oven light on or off.
DELAY START Pad
Use along with COOKING TIME or SELF CLEAN STD/LOW pads to set the
oven to start and stop automatically at a time you set.
COOK TIME Pad
Press and then press the number pads to set the amount of time you want your food to cook. The oven will shut off automatically when the cooking time has run out, unless the Cook and Hold feature was set.
CLEAR/OFF Pad
Press to cancel ALL oven operations except the clock and timer.
CLOCK Pad
Press before setting the clock.
Number Pads
Use to set any function requiring numbers such as the time of day on the clock, the timer, the oven temperature, the internal food temperature, the start time and length of operation for timed baking and self-cleaning.
KITCHEN TIMER ON/OFF Pad
Press to select the timer feature.
PROBE Pad
Press when using the probe to cook food.
Oven Control, Clock and Timer Features and Settings
Double oven control shown.
Models JT912 and JT952
Throughout this manual, features and appearance may vary from your model.
.
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Microwave Oven Controls Models JKP86 and JTP86
Throughout this manual, features and appearance may vary from your model.
Note: The time on the microwave display is shown in minutes and seconds (1:30 is one minute, 30 seconds). On the lower oven, time is shown in hours and minutes (1:30 is one hour, 30 minutes).
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Microwave Oven Control Features and Settings
Display
Displays the time during cooking functions, the power level being used, the Auto Codes, the Auto Defrost food weights, the cooking mode and instructions.
NOTE: The time on the microwave display is shown in minutes and seconds (1:30 is one minute, 30 seconds). On the lower oven, time is shown in hours and minutes (1:30 is one hour, 30 minutes).
AUTO SENSOR AND CONVENIENCE CONTROLS
The top row of pads lists specific items you may choose to heat or cook.
POPCORN
Use to pop popcorn.
REHEAT
Use when foods need a quick warm up.
POTATO
Use when cooking whole potatoes.
BEVERAGE
Use to heat a cup of coffee or other beverage.
SNACKS
Use to warm a variety of snack foods.
COOK
Use to automatically set the cooking times and power levels for a variety of foods.
TIME DEFROST
Use Time Defrost for most other foods.
AUTO DEFROST
Use Auto Defrost for meat, poultry and fish.
TIME COOK
Allows you to microwave for any time up to 99 minutes and 59 seconds.
POWER LEVEL
Press to choose the power level you want to set. Watch the display while pressing this pad to select the power level you want to set. You will also see a defrost level. This setting will allow you to choose your own defrost power level by using the number pads.
Number Pads
After pressing a function pad, press the number pads to set the exact amount of time you want to cook. For example, if you press the 1, 2 and 5 pads, you have set 1 minute and 25 seconds.
CLEAR/OFF
Pressing the CLEAR/OFF pad cancels all microwave cooking functions. It does not cancel the Kitchen Timer.
START
After all selections are made, press this pad to start the oven. The START pad must be pressed to turn on any function.
KITCHEN TIMER MIN/SEC
Press to set the timer up to 99 minutes and 59 seconds. Press the number pads to set the time. Press the KITCHEN TIMER
MIN/SEC pad again to start. Press the KITCHEN TIMER MIN/SEC pad twice to
clear the display.
Does not turn on microwave energy.
DELAY START
Allows you to set the microwave to delay cooking up to 12 hours.
ADD 30 SEC
Each time you press this pad the set time is increased 30 seconds.
CLOCK
Press this pad before setting the clock.
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Lower Oven Controls Models JKP86 and JTP86
Throughout this manual, features and appearance may vary from your model.
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Page 14
Lower Oven Control, Clock and Timer Features and Settings
Display
Shows the time of day, oven temperature, whether the oven is in the bake, broil or self-cleaning mode and the times set for the timer or automatic oven operations.
NOTE: The time on the lower oven display is shown in hours and minutes (1:30 is one hour, 30 minutes). On the microwave oven, time is shown in minutes and seconds (1:30 is one minute, 30 seconds).
If “F– and a number or letter” flash in the display and the oven control signals, this indicates a function error code. Press the CLEAR/OFF pad. Allow the oven to cool for one
hour. Put the oven back into operation. If the function error code repeats, disconnect the power to the oven and call for service.
If your oven was set for a timed oven operation and a power outage occurred, the
clock and all programmed functions must be reset.
The time of day (may be incorrect) will flash in the display when the there has been a power outage.
BROIL HI/LO Pad
Press to select the broil function.
BAKE Pad
Press to select the bake function.
SELF CLEAN Pad
Press to select the self-cleaning function. See the Using the self-cleaning lower oven section.
OVEN LIGHT Pad
Press to turn the oven light on or off.
Number Pads
Use to set any function requiring numbers such as the time of day on the clock, the timer, the oven temperature, the start time and length of operation for timed baking and self-cleaning.
CLEAR/OFF Pad
Press to cancel ALL oven operations except the clock and timer.
START Pad
Must be pressed to start any cooking or cleaning function.
KITCHEN TIMER ON/OFF Pad
Press to select the timer feature.
DELAY START Pad
Use along with COOKING TIME or SELF CLEAN pads to set the oven to start and
stop automatically at a time you set.
COOKING TIME Pad
Press and then press the number pads to set the amount of time you want your food to cook. The oven will shut off automatically when the cooking time has run out, unless the Cook and Hold feature was set.
CLOCK Pad
Press before setting the clock.
.
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Page 15
Oven Controls
Oven Control, Clock and Timer Features and Settings
BAKE Pad
Press this pad to select the bake function.
Display
Shows the time of day, oven temperature, whether the oven is in the bake or broil mode and the times set for the timer or automatic oven operations.
If “F —and a number or letter” flash in the display and the oven control signals, this indicates a function error code. Press the CLEAR/OFF pad. Allow
the oven to cool for one hour. Put the oven back into operation. If the function error code repeats, disconnect the power to the oven and call for service.
If your oven was set for a timed oven operation and a power outage occurred, the clock and all programmed
functions must be reset.
The time of day will flash in the display when there has been a power outage.
START Pad
Must be pressed to start any cooking function.
COOKING TIME Pad
Press this pad and then press the HOUR and MIN + or pads to set the amount of time
you want your food to cook. The oven will shut off automatically when the cooking time has run out, unless the Cook and Hold feature was set.
DELAY START Pad
Use along with COOKING TIME pad to set the oven to start and stop automatically at a time you set.
CLOCK Pad
Press this pad before setting the clock.
KITCHEN TIMER ON/OFF Pad
Press this pad to select the timer feature.
CLEAR/OFF Pad
Press this pad to cancel ALL oven operations except the clock and timer.
HOUR and MIN + and – Pads
Press these pads to set times up to 9 hours and 59 minutes—for example, the time of day on the clock, the timer, the starting and length of cooking time for timed bake.
TEMP + and – Pads
Press these pads to set the cooking temperature you want to use.
OVEN LIGHT ON/OFF Pad
Press this pad to turn the oven light on or off.
BROIL HI/LO Pad
Press this pad to select the broil function.
Model JKS06
Throughout this manual, features and appearance may vary from your model.
.
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Page 16
Microwave Oven Controls
10
Microwave Oven Control Features and Settings
Display
Displays the time during cooking functions, the power level being used, the Auto Codes, the Auto Defrost food weights, the cooking mode and instructions.
NOTE: The time on the microwave display is shown in minutes and seconds (1:30 is one minute, 30 seconds). On the lower oven, time is shown in hours and minutes (1:30 is one hour, 30 minutes).
AUTO SENSOR CONTROLS
The top row of pads lists specific items you may choose to heat or cook.
POPCORN
Use to pop popcorn.
BEVERAGE
Use to heat a cup of coffee or other beverage.
REHEAT
Use when foods need a quick warm up.
VEGETABLE
Use when cooking fresh, frozen or canned vegetables. Be sure to remove all vegetables from airtight and metal containers before placing them in the microwave.
POTATO
Use when cooking whole potatoes.
CHICKEN/FISH
Use when cooking chicken pieces or fish fillets.
ADD 30 SEC
Each time you press this pad the set time is increased 30 seconds.
DEFROST AUTO/TIME
The Defrost Auto/Time feature gives you two ways to defrost frozen foods. Press the DEFROST AUTO/TIME pad once for Auto Defrost or twice for Time Defrost.
Use Auto Defrost for meat, poultry and fish.
Use Time Defrost for most other foods.
TIME COOK
Allows you to microwave for any time up to 99 minutes and 99 seconds.
HELP
The help pad displays feature information and helpful hints. Press the HELP pad, then press a feature pad.
Model JT965
Throughout this manual, features and appearance may vary from your model.
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Page 17
Lower Oven Controls
Lower Oven Control, Clock and Timer Features and Settings
Display
Shows the time of day, oven temperature, whether the oven is in the bake, broil or self­cleaning mode and the times set for the timer or automatic oven operations.
NOTE: The time on the lower oven display is shown in hours and minutes (1:30 is one hour, 30 minutes). On the microwave, time is shown in minutes and seconds (1:30 is one minute, 30 seconds).
If “F– and a number or letter” flash in the display and the oven control signals, this indicates a function error code. Press the CLEAR/OFF pad. Allow the oven to
cool for one hour. Put the oven back into operation. If the function error code repeats, disconnect the power to the oven and call for service.
If your oven was set for a timed oven operation and a power outage occurred, the clock and all programmed
functions must be reset.
The time of day (may be incorrect) will flash in the display when there has been a power outage.
BROIL HI/LO Pad
Press to select the broil function.
BAKE Pad
Press to select the bake function.
CONVECTION BAKE Pad
Press to select baking with convection.
CONVECTION ROAST Pad
Press to select roasting with convection.
Number Pads
Use to set any function requiring numbers such as the time of day on the clock, the timer, the oven temperature, the internal food temperature, the start time and length of operation for timed baking and self-cleaning.
CLEAR/OFF Pad
Press to cancel ALL oven operations except the clock and timer.
PROBE Pad
Press when using the probe to cook food to the desired internal temperature. (For use in the lower oven only.)
SELF CLEAN Pad
Press to select the self-cleaning function. See the Using the self-cleaning lower oven section.
START Pad
Must be pressed to start any cooking or cleaning function.
KITCHEN TIMER ON/OFF Pad
Press to select the timer feature.
OVEN LIGHT Pad
Press to turn the oven light on or off.
DELAY START Pad
Use along with COOKING TIME or SELF CLEAN pads to set the oven to start and stop
automatically at a time you set.
COOKING TIME Pad
Press and then press the number pads to set the amount of time you want your food to cook. The oven will shut off automatically when the cooking time has run out, unless the Cook and Hold feature was set.
CLOCK Pad
Press before setting the clock.
23
Model JT965
Throughout this manual, features and appearance may vary from your model.
.
– 15 –
Page 18
Oven Controls
Oven Control, Clock and Timer Features and Settings
BAKE Pad
Press this pad to select the bake function.
BROIL HI/LO Pad
Press this pad to select the broil function.
SELF CLEAN STD/LOW Pad
Press this pad to select the self-cleaning function. See the Using the self-cleaning oven section.
START Pad
Must be pressed to start any cooking or cleaning function.
Display
Shows the time of day, oven temperature, whether the oven is in the bake, broil or self­cleaning mode and the times set for the timer or automatic oven operations.
If “F — and a number or letter” flash in the display and the oven control signals, this indicates a function error code. Press the CLEAR/OFF pad. Allow the
oven to cool for one hour. Put the oven back into operation. If the function error code repeats, disconnect the power to the oven and call for service.
If your oven was set for a timed oven operation and a power outage occurred, the clock and all programmed
functions must be reset.
The time of day will flash in the display when there has been a power outage.
OVEN LIGHT ON/OFF Pad
Press this pad to turn the oven light on or off.
DELAY START Pad
Use along with COOKING TIME or SELF CLEAN pads to set the oven to start and stop
automatically at a time you set.
COOKING TIME Pad
Press this pad and then press the HOUR and MIN + and pads to set the amount of time
you want your food to cook. The oven will shut off automatically when the cooking time has run out unless the Cook and Hold feature was set.
CLEAR/OFF Pad
Press this pad to cancel ALL oven operations except the clock and timer.
TEMP + and – Pads
Press these pads to set the cooking temperature you want to use.
CLOCK Pad
Press this pad before setting the clock.
HOUR and MIN + and – Pads
Press these pads to set times up to 9 hours and 59 minutes—for example, the time of day on the clock, the timer, the starting and length of cooking time for timed bake and the starting and length of cleaning time for self-clean.
KITCHEN TIMER ON/OFF Pad
Press this pad to select the timer feature.
Double oven control shown
Lower Oven Control Settings on models with a knob
OVEN Knob
Turn this knob to the temperature setting you want.
The OVEN CYCLE light glows until the oven reaches your selected temperature, then goes off and on with the oven element(s) during cooking.
5
Models JKP20, JTP20, JKP28, JTP28, JKP48,
Throughout this manual, features and appearance may vary from your model.
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Page 19
Lift-Off Oven Door
Hinge lock (unlocked position)
Slot
Hinge arm
Hinge arm
Indentation
Bottom
edge
of slot
Locked position
Sealed hinge arm
To remove the door:
1. Fully open the door .
2. Pull the hinge locks down toward the door frame, to the unlocked position. This may require a flat-blade screwdriver to start the hinge locks moving.
3. Firmly grasp both sides of the door at the top.
4. Close the door to the door removal position, which is halfway between the broil stop position and fully closed.
Caution: Do not lift the door by the handle.
5. Lift the door up and out until the hinge arm is clear of the slot.
To replace the door:
Oven
1. Firmly grasp both sides of the door at the top.
2. With the door at the same angle as the removal position, seat the indentation of the hinge arm into the bottom edge of the hinge slot. The
notch in the hinge arm must be fully seated into the bottom of the slot.
3. Fully open the door . If the door connot be fully opened, the hinge is not properly seated.
4. Push the hinge locks up against the front frame of the oven cavity , to the locked position.
5. Close the oven door and check for proper alignment (rubbing, etc.).
Door Assembly
The door assembly can be broken down into 2 basic assemblies: 1) The outer assembly consists of the door handle, vent trim, outer glass, bottom trim, and frame and 2) The inner assembly is made up of the inner panel, gasket, 2 or 3 glass panels (depending on model), and insulation. The assemblies are held together by 2 screws on each side and 3 (or 4) screws across the bottom.
To replace outer door assembly:
1. Remove the door. Refer to Lift-Off Oven Door.
2. Remove 3 (or 4) screws from the bottom door frame.
3 Screws
2 Screws
– 17 –
Page 20
3. Remove 2 screws from each side of the door on the liner.
4. Separate the liner assembly and the outer glass assembly.
5. Remove 2 screws from the door handle near the door vent trim.
6. Reassemble in reverse order.
To replace liner assembly:
1. Remove 3 screws on each side of the door liner to remove the door hinge assembly .
2. Remove 4 screws from the insulation retainer.
2 Screws
3. Remove 6 screws and the insulation retainer. The window pack and window gasket are now accessable on units with a window door.
Caution: Care must be taken when mounting door handle not to overtighten screws. Overtightening screws can strip the threads in the plastic handle. Hand-tighten ONLY. Make sure handle fits snug to door panel.
Oven Door Gasket
The gasket forms a seal around the front edge of the oven liner and the inner door panel, except for approximately a 6-in. opening at the center bottom. The gasket is attached to the inner door panel by a chain of spring clips.
To remove door gasket:
1. Open the door completely .
2. Pull the end of the gasket out of the slots at the bottom of the door .
3 Screws
4 Screws
6 Screws
3. Finish removing the gasket by placing a finger under the gasket beside the clip and pulling straight up.
To install gasket:
1. Locate the 2 clips on the gasket just right and left of center.
Note: The gasket will go on easier if folded 90 degrees at the clip being inserted.
2. Place a finger on top of the spring clip and press into the 2 center top holes in the inner door panel.
– 18 –
Window Pack and Gasket
Page 21
3. Continue this process all the way around the
6"
Door panel
Gasket
inner panel until all clips have been inserted.
4. With a small screwdriver, tuck the loose ends of the gasket into the slots at the center bottom of the door panel. Be sure to leave a 6-in. gap in
the gasket at the bottom of the door.
5. After the gasket has been inst alled, wipe a finger around the outer perimeter of the gasket, press­ing it up against the side of the inner panel. This will assure that the gasket is fully seated.
Door Hinge Assemblies
The door hinge comes as a complete assembly. For the hinges to operate properly , the hinge arms must be perpendicular to the door liner and parallel to each other with the door in the open position.
Door Hinge Replacement
1. Remove the door. Refer to Lift-Off Oven Door.
2. Remove 3 or 4 screws (depending on model) from the bottom door frame.
3. Remove 2 screws from each side of the door, and separate the door liner and the outer glass assembly.
4. Remove 3 or 4 screws (depending on model) from the door liner to remove each door hinge assembly.
Note: When assembling, make sure the hinge arms are parallel to each other and perpendicular to the door liner. If not, the hinge may bind on the receiving channel of the door.
Note: If the new hinge is not in the cocked and locked position after installing, place the bottom of the door against a firm surface and push the hinge arm down to the cocked position. Pull the hinge lock back against the door liner surface to lock the hinge in this position.
3 Screws
2 Screws
3 Screws
Component Compartment Airflow
The component compartment contains a fan located on the rear wall of the compartment. Fan blades pull air in from the back of the unit, circulate it in the compartment area to cool the compo­nents, and exhaust it through the louvers below the control panel.
The fan turns ON when the START pad is de­pressed after selecting a cook mode. It turns OFF when the CLEAR/OFF pad is depressed or when the COOK TIME has ended.
– 19 –
Page 22
Electronic Oven Control System
g
py
The Electronic Oven Control System consists of the electronic control (ERC), key panel, oven sensor, and door lock assembly.
Control Panel
There are 8 basic control panel assemblies. They can be found listed by model number in the Con­trol Panel Features section on pages 6 through 16.
Control Panel Access
1. Disconnect the power and open the oven door.
2. Remove 3 screws from across the bottom of the control panel.
Models ZEK938, ZET938, JK915, JT915, JCK915, JCT915, and JT912
Models JKP20, JCKP20, JKS06, and JCKS06
3. Push up on the control panel assembly to release the top catches.
Note: See special instructions for Glass Touch Models Only , page 25.
Electronic Range Control (ERC)
Caution: Components are electronically hot on
ERC when voltage is connected to range Note: Temperature/Mode Selection is necessary
for operation of relay contacts. Note: Voltage must be present across terminals
L1 to N for ERC to operate. There are 7 basic ERC configurations (see illus-
trations). The ERC contains the bake and broil relays, convection relay (some models), control transformer, lock motor relay (some models), sensor, and lock motor connector (some models), along with a series of 1/4-in. terminals for connect­ing power to the control and heating units.
.
Models JKP48, and JTP48
Models JPT20 and JKP28
Models ZEK958, ZET958, JK955, JT953, and JT955
Models JT965 and JTP86
RIBBON CONNECTOR
1
L1
BROIL
BAKE
CONVECTION (If equipped)
LATCH MOTOR
R
N
O
E
S
V
N
O
E S
CN-02
MDL
CN-O1 1
(If equipped)
CONV
FAN
D E K C O L
COMMON
CFAN
Model JKP86
D E K
E
C
T
B
O
A
O
L
E
R
N
M
P
U
2
L1
LAMP
OVEN
N
LAMP
-N-
BROIL
N
BAKE
LAMP
MOTOR1 MOTOR2
SENSR1
COMMON
UNLOCK
LOCK
SENSR2
4
1 2 0 1
P 1
Models ZEK958, ZET958, JK955, JT952, and JT955 Daughter Board
20
Page 23
Control Voltage
Models ZEK938, ZET938, JK915, JT915, JCK915, JCT915, and JT912
TERMINALS
L1-N COM TO N L1-L2 L1-BA, L1-BR,
L1-CV *LIGHT-L1 COM TO MDL **L1-CF
VOLTAGE
120 VAC ALL THE TIME 120 VAC ALL THE TIME 240 VAC ALL THE TIME 240 VAC oven on, not calling for heat.
DLB relay K9 closed. 120 VOLTS when light is on. 120 VOLTS not locking or unlocking, door closed. 120 VOLTS when oven door is closed, fan off.
Models ZEK958, ZET958, JK955, JT953, and JT955
TERMINALS
L1-N N to COM, COM 0, C L1-1 & 2-BAKE 1 & 2 L1-1 & 2-BROIL 1 & 2 L1-1 & 2 CONV 1 & 2 *L1 to Con J6 Term, 1 & 3
L1 TO MDL 1 & 2 **L1-to CON J6 Term 5 &
6 (See Conv. Fan Assy.)
VOLTAGE
120 VAC ALL THE TIME 120 VAC ALL THE TIME 240 VOLTS when oven is not
calling for heat (BAKE, CONV. , and BROIL relay contacts open).
120 VOLTS when light is on. 120 VOLTS locking or unlocking. 120 VOLTS when oven door is
closed and Conv. Bake, Conv. Roast not operating.
Model JKP86
Models JKP20, JCKP20, JKS06, and JCKS06
TERMINALS
L1A & B TO N
DLB TO BAKE
DLB TO BROIL
*OVL1–OVL2 AUX1–N
VOLTAGE
120 VAC ALL THE TIME 240 VOLTS when oven is calling
for heat (BAKE and BROIL relay contacts closed).
120 VAC when light is off. 120 VAC locking or unlocking.
Models JKP48 and JTP48
TERMINALS
L1-N N to COM, COM 0,C L1-1 & 2-BAKE 1 & 2 L1-1 & 2-BROIL 1 & 2 L1-1 & 2 CONV 1 & 2 L1 to Con J6 Term, 1 & 3
L1 TO MDL 1 & 2 L1-to CON J6 Term 5
L1 - to CON J6 T erm 6 & 6 (See Conv. Fan Assy.)
VOLTAGE
120 VAC ALL THE TIME 120 VAC ALL THE TIME 240 VOLTS when oven is not
calling for heat (BAKE, CONV. , & BROIL relay contacts open).
120 VOLTS when light is on.
120 VOLTS locking or unlocking 120 VOLTS when oven door is
120 VOLTS when cooling fan is
closed and Conv. Bake, Conv.
not running, 0 VOL TS when
Roast not operating.
cooling fan is running.
Model JKP28
TERMINALS VOLTAGE
L1 & B - N
L1A & B -N AUX1
DLB TO BAKE DLB TO BROIL
*OVL2–L1 AUX2–N
120 VAC ALL THE TIME. 120 VAC ALL THE TIME.
240 VOLTS when oven is not calling for heat (BAKE and BROIL relay contacts open).
120 VAC when light is on. 120 VAC locking or unlocking.
Model JKP28
TERMINALS VOLTAGE
L1-N AUX1
DLB TO BAKE DLB TO BROIL
J4 5 to 7 AUX2 - N
120 VAC ALL THE TIME 120 VAC ALL THE TIME
240 VOLTS when oven is not calling for heat (BAKE and BROIL relay contacts open).
120 VAC when light is off. 120 VAC locking or unlocking.
TERMINALS
L1 TO N L1 TO BAKE
L1 TO BROIL
*LAMP-L1
MOTOR 1-MOTOR 2
VOLTAGE
120 VAC ALL THE TIME 240 VOLTS when oven is not calling for heat
(BAKE and BROIL relay contacts open).
120 VAC when light is on. 120 VAC not locking or unlocking, door closed.
Models ZEK958, ZET958, JK955, JT953, and JT955
TERMINALS VOLTAGE
L1-N (CN01-1) L1 TO BAKE
L1 TO BROIL L1 TO CONVECT
*CNO1-2 TO L1 N TO CN01-4 L1 TO CN01-3
*If oven light is not working, make the following checks:
Check oven light bulb.
Light is to come on when the door is openedcheck
voltage across light socket. Terminals should read 120 VAC. If 0 volts, check jamb switch and wiring.
Light is to come on when control light pad is pressed. K11 or K12 should click. Check voltage from N to J6-3 (upper) or N to J6-1 (lower). Should read 120 VAC. If 0 volts, check oven light keypad using Ohmeter Test. If keypad is good, replace the control.
**If convection fan not running, make the following
checks:
Check the voltage from terminal CN01-3 to N on control–it should read 120 V in Conv. Bake or Roast mode.
If voltage OK, check convection fan motor. It should read approx. 15-20 at room temp. Check to make sure the fan shaft is not rubbing on the oven liner.
Check Door Switch.
120 VAC ALL THE TIME 240 VOLTS when oven is not calling for heat
(BAKE and BROIL relay contacts open).
120 VAC when light is on. 120 VOLTS not locking or unlocking, door closed. 120 VOLTS when oven door is closed, fan off.
– 21 –
Page 24
Key Panel Test
The key panel (control panel) and Electronic Range Control (ERC) are separate components and must be tested individually .
The key panel is connected to the ERC by a ribbon connector . The ERC will sound a tone when any of the pads are depressed except for the +/- pads or number pads (unless another pad is pressed first).
To help isolate a problem to either the ERC or key panel, depress each pad on the key panel followed by the Clear / Off pad and observe the following:
Bake, Broil, Clean, Timer, Clock, Convection,
Warm, and Cook T ime Pads - Audible tone plus display showing mode of operation selected.
Clear / Off - Audible tone and display shows
time of day .
Oven Light - Oven light turns on - Audible tone
and relay click.
Temp, Hour, Min, +/- or Number Pads - No
audible tone. Can only be used after another function pad has been selected.
Ribbon Cable Connections
If some of the pads work and some dont, the problem is probably with the key panel. To verify that the key panel is the problem for Membrane Control Models, check the connector for proper insertion of the ribbon cable and perform the Ohmeter Test.
Note: See special instructions for Glass Touch Models Only , page 25.
– 22 –
Page 25
Ohmmeter T est
123456789
1011121314
Note: The Ohmmeter Test can be performed on Membrane Control Models ONLY. Glass Touch Models should read infinitely high resistance
between ALL pins. If some of the pads work and some dont, the
problem is probably the key panel. To verify that the key panel is the problem, perform the Ohmme­ter Test. If the ohmmeter reads infinite ohms when depressing the pad, or shows less than 1 MEG OHM without depressing the pad, the key panel is bad. The ohmmeter should read under 300 when pressing a pad.
Models JT912
FUNCTION MEMBRANE PINS
Bake 1 to 8 Broil 2 to 5
Clean 2 to 9 Oven Light 3 to 6 Cooking Time 2 to 8 Delay Start Time 1 to 6 Kitchen Timer 2 to 6 Clock 1 to 5 Clear/Off 2 to 11 Start 2 to 7 Conv. Bake 4 to 8 Conv. Roast 3 to 8 Probe 2 to 10 Proofing 1 to 10 Warm 1 to 9
HP DIGI
FUNCTION MEMBRANE PINS
1 3 to 9 2 4 to 9 3 3 to 11 4 4 to 11 5 4 to 6 6 3 to 7 7 4 to 7 8 3 to 10 9 4 to 10 0 4 to 5 Short 1 to 11
HP DIGI
2 to 12
Set the ohmmeter on the scale that reads approxi­mately 500 Ω. Connect leads to the ribbon cable as indicated in the chart for each function. De­press the function pad. Meter should read less than infinity ohms if the switch contact is working.
Note: See special instructions for Glass Touch Models, page 25.
Note: Replacement touch pads come as part of the control panel.
Note: Conductors are not all on the same side.
Model JKP28 and JTP28
FUNCTION CONDUCTORS BAKE 12 to 14 BROIL 11 to 14 CLEAN 9 to 14 OVEN LIGHT 9 to 13 COOKING TIME 11 to 13 DELAY START TIME 12 to 13 KITCHEN TIMER 10 to 14 CLOCK 10 to 13 CLEAR/OFF 3 to 4 START 1 to 2 UP TEMP 6 to 13 DN TEMP 6 to 14 UP HOUR 7 to 13 DN HOUR 7 to 14 UP MIN 8 to 13 DN MIN 8 to 14
1 2 3 4 5 6 7 8
9 10 11 12 13 14
NOTE: Replacement touch pads come as part of the control panel assembly.
Ohmmeter Test
Set ohmmeter on high scale. Connect leads to ribbon cable as indicated in chart for each function. Press function pad. Meter should read less than 5000 if the switch contact is working.
Models JKP20, JCKP20, and JTP20
1 2 3 4 5 6 7 8
9 10 11 12 13 14
Function
Bake Broil Oven Light Cooking Time Delay Start Time Kitchen Timer Clock Clear/Off Clean Start Up Temp Dn Temp
Conductors
12 to 14 11 to 14 9 to 13 11 to 13
to
12 ro 13 10 to 14 10 to 13 3 to 4 9 to 14 1 to 2 6 to 13 6 to 14
Models JKS06 and JCKS06
1 2 3 4 5 6 7 8
9 10 11 12 13 14
Function
Bake Broil Oven Light Cooking Time Delay Start Time Kitchen Timer Clock Clear/Off Start Up Temp Dn Temp
Conductors
12 to 14 11 to 14 9 to 13 11 to 13 12 ro 13
to
10 to 14 10 to 13 3 to 4 1 to 2 6 to 13 6 to 14
NOTE: Replacement t come as part of the Con
Model JKP48 and JTP48
NOTE: Replacement touch pads come as part of the Control Panel.
Up Hour Dn Hour UP Min Dn Min
Up Hour Dn Hour UP Min Dn Min
7 to 13 7 to 14 8 to 13 8 to 14
7 to 13 7 to 14 8 to 13 8 to 14
FUNCTION
Bake Broil Clean Oven Light Cooking Time Delay Start Time Kitchen Timer Clock Clear/Off Start Up Temp Dn Temp Up Hour Dn Hour UP Min Dn Min Short
DD SLEW MEMBRANE
UPPER PINS
2 to 14 2 to 13 3 to 14 3 to 13 1 to 13 1 to 14 4 to 13 4 to 14 15 to 19 16 to 19 6 to 14 5 to 14 6 to 13 5 to 13 6 to 12 5 to 12 7 to 12
DD SLEW MEMBRANE
LOWER PINS
10 to 14 10 to 13 11 to 14 11 to 13 9 to 13 9 to 14
----------
---------­17 to 19 18 to 19 8 to 14 8 to 12
----------
----------
----------
----------
23
Page 26
Ohmmeter T est continued
without pressing the pad, the key panel is bad
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Model JKP86
NOTE: Replacement touch pads come as part of the Control panel.
1 2 3 4 5 6 7 8
9 10 11 12 13 14
Function
Bake Broil Oven Light Cooking Time Delay Start Time Kitchen Timer Clock Clear/Off
Pins
11 to 13 10 to 13 11 to 14 12 to 10 11 to 12 9 to 13 9 to 12 3 to 4
Models JT965 and JTP86
FUNCTION CONDUCTORS
BAKE 3 to 4 BROIL 1 to 4 CLEAN 2 to 11 OVEN LIGHT 1 to 11 COOKING TIME 1 to 10 DELAY START TIME 3 to 10 KITCHEN TIMER 1 to 9 CLOCK 3 to 9 CLEAR/OFF 13 to 14 START 12 to 14
FUNCTION CONDUCTORS
PROBE 3 to 11
1 3 to 6 2 3 to 5 3 3 to 8 4 3 to 7 5 1 to 6 6 1 to 5 7 1 to 8 8 2 to 6 9 2 to 5 0 2 to 8
Set ohmmeter on high scale. Connect leads to ribbon cable as indicated in chart for each function. Press function pad. Meter should read less than 5000 if the switch contact is working.
NOTE: Flat cable conductors are on either side, but not both sides.
NOTE: Replacement touch pads come as part of the control panel.
Start 1 2 3 4 5 6 7 8 9 0
Ohmmeter Test
1 to 2 14 to 9 8 to 14 5to 13 5 to 12 6 to 13 6 to 12 7 to 14 7 to 12 7 to 13 10 to 14
Model JT952
UPPER OVEN
FUNCTION
BAKE 5–10 4–8 BROIL 4–10 3–9 CONV. BAKE 6–10 — CONV. ROAST 2–11 — COOKING TIME 5–11 3–8 DELAY START TIME 1–10 1–9 CLEAN 3–11 2–8 OVEN LIGHT 1–11 6–9 START 2–10 2–9 CLEAR 2–13 5–14
COMMON FUNCTIONS
Timer 2–12 5 6–13 Clock 4–11 6 4–9 1 3–13 7 5–9 2 4–12 8 6–12 3 5–12 9 3–12 4 4–13 0 5–13 Short 1–13
7–5 2–14
CONDUCTOR
Digit pad type only
LOWER OVEN CONDUCTOR
.
NOTE: Conductors are on either side but not on both.
24
Page 27
Glass Touch Models ONL Y
Touch Control Check the touch control panel for delamination to
make sure the touch board is not separating from the glass. Next, check to make sure the resis- tance is infinitely high between ALL pins. Any impedance implies a faulty touch control.
Attention: The new glass touch models maintain a constant exchange of information between the touch control and the main board through a ribbon cable. These signals have an upper and lower value limit for the ERC to interpret them correctly . Any interruption to this connection will break the continuity , and possibly push the parameters outside the limits. This will issue an F0 fault code, and cause the controls to not function.
When any service is performed that requires moving, or removing, the touch control or main board, the glass touch parameters must be set.
Setting Touch Control Parameters Note: After installing the control, the glass touch
parameters must be set. If they are not set, the
control will not operate. To set these parameters on a new part
installation:
5) If steps 2 through 4 do not occur as described, repeat the process.
6) Check the control for operation, especially the Clear/Off and/or Cancel keys.
Note: If for any reason the control panel is opened, or if the new control still does not operate as described above, complete the following steps:
1) Press the “Bake” and “Broil” keys simultaneously.
2) For digital keypads, press the “9” and “0” keys simultaneously for 5 seconds.
For slew keypads, press the Hour Down and
Minute Down keys simultaneously for 5 seconds.
3) Wait approximately 20 seconds after the time of day is displayed.
4) For digital keypads, press the “1” and “5” keys simultaneously.
For slew keypads, press the Temp Up and
Minute Up keys simultaneously .
5) The control will briefly go blank,briefly display all LED segments, briefly display LOC REF, then display all segments for 30 seconds, and finally display LOC REF.
1) Reassemble the control panel and return the oven to its normal installation.
2) Reset circuit breaker to apply power to the oven. The control will briefly display all LED segments, briefly display LOC REF, then display all segments again for 30 seconds, and finally display LOC REF continuously . After this sequence is completed, proceed to step 3.
3) For digital keypads, press the “6” and “8” keys simultaneously.
For slew keypads, press the Hour Down and
Minute Up keys simultaneously .
4) The control will then display the time of day and operate.
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6) For digital keypads, press the “6” and “8” keys simultaneously.
For slew keypads, press the Hour Down and
Minute Up keys simultaneously .
7) The control will then display the time of day and operate.
8) Check the control for operation, especially the Clear/Off and/or Cancel keys.
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25
Page 28
ERC Failure Codes
they can be recalled by pressing together: The oven may stop operating but not give an F-code on the display immediately. F-codes are stored in nonvolatile EEPROM. After 2 identical faults occur consecutively, most F-codes will be displayed (some are never displayed). If displayed,
Models JKP28, JTP28, JKS06, JCKS06, JKP20, JCKP20, and JTP20
1. TIMER, 2. CLOCK, and 3. MIN DOWN (or 9).
While displayed, pressing MIN UP or 8 and HR
DOWN or 6 together will clear them. A fault must
exist continuously for 5 minutes before an F-code
is recorded (F2, F8 are sooner).
FAILURE CODE
F0
Oven temperature
F2
inside oven cavity as measured by sensor over 650°F unlatched or 915°F latched
F3 Open oven sensor
Shorted oven sensor
F4
(under 950 ohms)
Sensor Circuit supervisor
F5
failure
F7
F8
Cooling fan stall or other
F9
cause of open thermal switches in yellow or blue latch leads
MEANING
Shorted OFF key
(over 3000 ohms)
Shorted matrix or START key
EEPROM data shift failure
CORRECTION
Determine if problem is with Key Panel or Control by
disconnecting ribbon cable and measuring flat cable
3 to 4. Should be to probe side with conductor.
Should be 125–1750 ohms while pressing OFF key.
Welded relay contacts
Airflow to rear of unit
High resistance in oven sensor leads/connectors
(especially at sensor in rear)
Disconnect power. Disconnect sensor harness from control. Measure sensor resistance (white leads) to be ~1080 ohms at room temperature with 2 ohms per deg change.
Look for damaged harness terminals if not a bad sensor.
Disconnect power. Disconnect sensor harness
from control. Measure sensor resistance (white leads) to be ~1080 ohms at room temperature with 2 ohms per deg change.
Separate sensor from harness to determine fault.
Replace Control.
Determine if problem is with Key Panel or Control by disconnecting flat cable and measuring cable pins using pinout chart. Allow up to 1000 ohms when pressing a key.
If repeated, replace control. Suspect cooling fan (between ovens) or airflow.
– 26 –
Page 29
Models JCK915, JCT915, JK915, JT915, JK955, JT955, ZEK938, ZET938, ZEK958, and ZET958
FAILURE CODE
F0
F2
Oven temperature
1. Inside oven cavity as measured by sensor over 650°F unlatched or 915°F latched
2. Cooling fan stalls while oven above 650°Fopen thermal switch in yellow leads
Open oven sensor
F3
(Over 2900 ohms)
F4
Shorted oven sensor (under 950 ohms)
F5
F7
F8
Cooling fan stalls while oven
F9
above 650°F—open thermal switch in yellow leads
MEANING
Shorted OFF key
Sensor circuit supervisor failure
Shorted matrix or START key
EEPROM data shift failure If repeated, replace control.
switch in yellow or blue latch leads.
CORRECTION
Determine if problem is with Key Panel or Control by disconnecting ribbon cable and measuring flat cable pins 1314. Should be open. Should be 100
<300 while pressing OFF key .
150 ohms while pressing OFF key.
Welded relay contacts
Cooling fan stalled or blocked
Airflow to rear of unit
High resistance in oven sensor leads/
connectors (especially at sensor in rear)
Disconnect power. Disconnect sensor harness from control. Measure sensor resistance (white leads) to be ~1080 ohms at room temperature with 2 ohms per degree change.
Look for damaged harness terminals if not a bad sensor.
Disconnect power. Disconnect sensor harness from control. Measure sensor resistance (white leads) to be ~1080 ohms at room temperature with 2 ohms per degree change.
Separate sensor from harness to determine fault.
Replace control.
Determine if problem is with Key Panel or Control by disconnecting ribbon cable and power up control. If no F code, problem is with key circuit.
Cooling fan or airflow to control area.
Model JT912
FAILURE CODE MEANING CORRECTION
-F0-
Shorted OFF key
or open short.
-
Over temperature
-F2
1.Inside oven cavity as measured by sensor over 650°F unlatched or 915°F latched, or
Determine if problem is with Key Panel or Control by disconnecting ribbon cable and measuring flat cable pins
2 - 11.
1314. Should be open. Should be 100150 ohms while
OFF key.
pressing OFF key.
Welded relay contacts
Cooling fan stalled or blocked
Airflow to rear of unit
High resistance in oven sensor leads/
2.Cooling fan stalls while oven above 650°Fopen thermal switch in yellow leads
-F3-
Open oven sensor (over 2900 ohms)
Disconnect power. Disconnect sensor harness from control. Measure sensor resistance (white leads) to be
-1080 ohms at room temperature with 2 ohms per degree change.
Look for damage harness terminials if not a bad sensor.
Shorted oven
-F4­sensor (under 950 ohms)
Disconnect power. Disconnect sensor harness from control. Measure sensor resistance (white leads) to be -1080 ohms at room temperature with 2 ohms per degree change.
Separate sensor from harness to determine fault.
-F7-
Shorted matrix or START key
Determine if problem is with Key Panel or Control by disconnecting ribbon cable and measuring flat cable using pinout chart. Allow up to 1000 ohms when pressing a key.
-F8-
EEPROM data shift failure Cooling fan stalls while oven above
-F9­650°Fopen thermal switch in
yellow or blue leads.
yellow leads Loss of latch motor safety circuit
-FF-
If repeated, replace control. Cooling fan or airflow to control area.
Replace control.
<300 while pressing
connectors (especially at sensor in rear)
– 27 –
Page 30
Model JT952
FAILURE CODE MEANING CORRECTION
-F0-
Shorted OFF key
or open short.
-
Over temperature
-F2
1.Inside oven cavity as measured by sensor over 650°F unlatched or 915°F latched, or
2.Cooling fan stalls while oven above 650°Fopen thermal switch in yellow leads
-F3-
Open oven sensor (over 2900 ohms)
Shorted oven
-F4-
sensor (under 950 ohms)
-F7-
Shorted matrix or START key
-F8-
EEPROM data shift failure Cooling fan stalls while oven above
-F9-
650°Fopen thermal switch in
yellow or blue leads.
yellow leads Loss of latch motor safety circuit
-FF-
Determine if problem is with Key Panel or Control by disconnecting ribbon cable and measuring flat cable pins
5 - 14.
1314. Should be open. Should be 100150 ohms while
OFF key.
pressing OFF key.
Welded relay contacts
Cooling fan stalled or blocked
Airflow to rear of unit
High resistance in oven sensor leads/
Disconnect power. Disconnect sensor harness from
control. Measure sensor resistance (white leads) to be
-1080 ohms at room temperature with 2 ohms per degree change.
Look for damage harness terminials if not a bad sensor.
Disconnect power. Disconnect sensor harness from control.
Measure sensor resistance (white leads) to be -1080 ohms at room temperature with 2 ohms per degree change.
Separate sensor from harness to determine fault.
Determine if problem is with Key Panel or Control by disconnecting ribbon cable and measuring flat cable using pinout chart. Allow up to 1000 ohms when pressing a key.
If repeated, replace control. Cooling fan or airflow to control area.
Replace control.
<300 while pressing
connectors (especially at sensor in rear)
Models JT965 and JTP86
FAILURE CODE MEANING CORRECTION
-F0-
Shorted OFF key
or open short.
-
Over temperature
-F2
1.Inside oven cavity as measured by sensor over 650°F unlatched or 915°F latched, or
2.Cooling fan stalls while oven above 650°Fopen thermal switch in yellow leads
-F3-
Open oven sensor (over 2900 ohms)
Shorted oven
-F4-
sensor (under 950 ohms)
-F7-
Shorted matrix or START key
-F8-
EEPROM data shift failure Cooling fan stalls while oven above
-F9-
650°Fopen thermal switch in
yellow or blue leads.
yellow leads Loss of latch motor safety circuit
-FF-
Determine if problem is with Key Panel or Control by disconnecting ribbon cable and measuring flat cable pins
13-14.
1314. Should be open. Should be 100150 ohms while
OFF key.
pressing OFF key.
Welded relay contacts
Cooling fan stalled or blocked
Airflow to rear of unit
High resistance in oven sensor leads/
connectors (especially at sensor in rear)
Disconnect power. Disconnect sensor harness from control. Measure sensor resistance (white leads) to be
-1080 ohms at room temperature with 2 ohms per degree change.
Look for damage harness terminials if not a bad sensor.
Disconnect power. Disconnect sensor harness from control.
Measure sensor resistance (white leads) to be -1080 ohms at room temperature with 2 ohms per degree change.
Separate sensor from harness to determine fault.
Determine if problem is with Key Panel or Control by disconnecting ribbon cable and measuring flat cable using pinout chart. Allow up to 1000 ohms when pressing a key.
If repeated, replace control. Cooling fan or airflow to control area.
Replace control.
<300 while pressing
– 28 –
Page 31
Model JKP86
FAILURE CODE MEANING CORRECTION
-F0-
-F7-
2.Disconnecting Ribbon Cable from control and waiting at least 3 minutes to see if Code recurs.
If code recurs, problem is in the control. Replace control.
If code does not recur, problem is with the Key Panel.
-F2-
Control senses oven temperature above 615°F with the door circuit in the unlock mode.
Control senses oven temperature above 915°F with the door in the door locked mode.
-F3-
-F4-
-FF-
Stuck key pad may mean relay is turned on.
Indicates that oven is over temperature in one of the following modes within either a cooking or clean mode of operation.
Open or shorted sensor (circuit). Could be a result of contamination on terminals or pinched wire in sensor circuit, cold solder joint on control.
Loss of door motor safety circuit.
Determine if problem is with the Key Panel or Control by:
1. Pushing CLEAR/OFF pad,
Look for welded relay contacts. (Heating elements on in off mode.)
Look for high resistance in the sensor circuit due to high contact resistance (poor terminal crimp, deformed terminals, loose connection inside sensor tube) or intermittent solder joint.
Electrical noise interference in the sensor circuit (ham radio, cordless phone, etc.).
Disconnect power to range. Disconnect
sensor connector from control.
Measure sensor resistance at control
connector (take care not to damage terminals). Should read 1100 at room ambient (approx. 72°F).
Measure each sensor lead from connector
block to ground. If shorted, look for pinched or cut wire in sensor circuit.
Check connector terminals – Look for
deformed or corrosion on terminals. Repair or replace.
If all above is OK, replace control.
Replace control.
Models JTP48 and JKP48
FAILURE CODE
F0
Oven temperature inside oven
F2
cavity as measured by sensor over 650°F unlatched or 915°F latched
F3
Shorted oven sensor
F4
(under 950 ohms)
Sensor circuit supervisor
F5
failure
F7
F8
F9 Cooling fan stalls or other
cause of open thermal switches in yellow or blue latch leads
MEANING
Shorted OFF key
Open oven sensor (over 3000 ohms)
Shorted matrix or START key
EEPROM data shift failure
CORRECTION
Determine if problem is with Key Panel or Control by disconnecting ribbon cable and measuring flat cable pins 7–12. Should be to probe side with conductor. Should be 125–1750 ohms while pressing OFF key.
Welded relay contacts
Airflow to rear of unit
High resistance in oven sensor leads/
connectors (especially at sensor in rear)
Disconnect power. Disconnect sensor harness from control. Measure sensor resistance (white leads) to be -1080 ohms at room temperature with 2 ohms per degree change.
Look for damaged harness terminials if not a bad sensor.
Disconnect power. Disconnect sensor harness from control. Measure sensor resistance (white leads) to be ~1080 ohms at room temperature with 2 ohms per degree change.
Separate sensor from harness to determine fault.
Replace control.
Determine if problem is with Key Panel or Control by disconnecting flat cable and measuring cable pins using pinout chart. Allow up to 1000 ohms when
pressing a key. If repeated, replace control. Suspect cooling fan (between ovens) or airflow.
– 29 –
Page 32
Special Functions
The control has a section that can be entered to change how the control will work. To enter this section, press and hold BAKE and BROIL pads for 2 seconds. SF appears in the display. Select the area to change. When the change has been made, press START to return to Time of Day.
End-of-Cycle Tone - Press TIMER pad. Display shows Con Beep when control is set for Continuous End-of-Cycle Tone or Beep when set for Noncontinuous.
•°F or °C - Press Broil pad. Display will show either F (Fahrenheit) or C (Celsius). Press Broil pad again to change.
12 hour, 24 hour, or blank out Time of Day Clock - Press Clock pad. Display will show 12 hr, 24 hr, OFF for blank clock. Press again
to change.
Auto Recipe
TM
Conversion (convection
models) converts baking temperatures to convection baking temperatures. Press Conv Bake 1 Rack or Conv Bake pad. The display will show CON OFF. Press Conv Bake 1 Rack or Conv Bake pad again and display will show CON ON.
Oven Sensor and Door Switch Ohmmeter T est
See Motorized Door Lock Operation, page 34, for door switch function explanation.
Disconnect power to range. Make resistance measurement from side of sensor and lock switch connector with exposed terminals disconnected from control.
Cook & Hold (used only with Time Bake or Delay Bake functions) - Press Cooking Time pad. Display will show either Hld On or Hld Off. Press again to change.
12-hour shutdown comes set to shut down after 12 hours of continuous operations; this can be eliminated - Press Delay Start pad. Display will show No Shdn. To turn back on, press Delay Start pad again and display will show Sabbath; press again and display will show 12 Shdn.
Sabbath Mode (GE models only) disables all but Bake and Timed Bake, disables beep s, overrides 12-hour shutdown, and puts symbols on red display during bake. Access by pressing Delay Start pad until display shows Sabbath. Exit by pressing Delay Start pad until No Shdn or 12 Shdn shows.
Sales Mode (special feature added for sales floor demonstration) - Press Clock and Timer pads at the same time. Display will start to cycle through the different modes of operation.
Control Lockout makes all keys inactive when the control is locked. Press the 9 & 0 pad or down arrow time slew key for 3 sec­onds. Display will show Loc On. To unlock the controls, press the 9 & 0 pad or down arrow
time slew key for 3 seconds. Display will show Loc Off. The display will show Loc On if a pad
is pressed while the control is locked.
Models ZEK958, ZET958, JK955, and JT955
CIRCUIT TERMINALS OHMS
UPPER LOWER
Oven Sensor 6 to 8 3 to 4 *1100@Rm Temp. Door Unlatched 3 to 5 6 to 8 0
Door Latched 4 to 5 6 to 7 0
3 to 5 6 to 8 Open
OVEN OVEN
4 to 5 6 to 7 Open
Models ZEK938, JCK915, JTP86, JK915 and JT965
CIRCUIT TERMINALS OHMS
Oven Sensor 6 to 8 1100@ Rm Temp.* Door Unlatched 3 to 5 0
4 to 5 open
Door Latched 4 to 5 0
3 to 5 open
2562 @ 825°F
Model JKP28, JTP28, JTP20, and JKP28
CIRCUIT TERMINALS OHMS
Oven Sensor 4 to 6 *1100@Rm Temp. Door Unlatched 1 to 3 0 Door Latched 2 to 3 0
* If abnormal reading is observed, remove sensor from oven and check at disconnect block. Wiggle leads while checking resistance. If more than 10 fluctuation in resistance occurs, replace sensor.
J1 4 to 6 J1 1 to 3
J1 2 to 3
2 to 3 open
J1 2 to 3 J1 1 to 3
1 to 3 open
2562@ 825°F . Clean
– 30 –
Page 33
Model JKP86
Sensor and Lock Switch Connectors
CIRCUIT TERMINALS OHMS
Oven Sensor *1100@Rm Temp.
2562@ 825°F Clean
Door Unlatched
Common-unlock
0
Common-lock Open
Door Latched Common-lock 0
Common-unlock
Open
Models JTP48
CIRCUIT TERMINALS OHMS
UPPER LOWER OVEN OVEN
Oven Sensor 6 to 8 1 to 2 1100@ Rm Temp.* Door Unlatched 3 to 5 4 to 6 0
4 to 5 4 to 5 Open
Door Latched 4 to 5 4 to 5 0
3 to 5 4 to 6 Open
Models ZET938, JCT915, JT915, and JT912
CIRCUIT TERMINALS OHMS
Oven Sensor 6 to 8 1100 @ Rm Temp.
2650 @ 865°F
Door Unlatched 3 to 5 0
4 to 5 open
Door Latched 4 to 5 0
3 to 5 open
Models ZET958, JK955, JT952, JT955, JKP48, JKT48, and JTP48
MEAT PROBE 30K-50K @ rm
HIGH TEMP THERMAL SW.
SENSOR 1100 @ RM 2562 @ 825 F
LOCK
LOCK
SW
SW
1
2
LOCK
UNLOCK
MEAT PROBE 30K-50K @ rm
LOW TEMP THERMAL SW.
LOCK SW. #1
HIGH TEMP THERMAL SW.
LOW TEMP THERMAL SW.
LOCK SW. #2 UNLOCK
UPPER OVEN SENSOR AND LOCK SWITCH CONNECTOR
CONTROL CONNECTOR PLUG
LOWER OVEN SENSOR AND LOCK SWITCH CONNECTOR
CONTROL CONNECTOR PLUG
(ON SOME MODELS)
1 2 3 4 5 6 7 8
OVEN SENSOR 1100 @ RM. TEMP 2562 @ CLEAN TEMP
1 2 3 4 5 6 7 8
(ON SOME MODELS)
Model JKP86
LOW TEMP THERMAL SW.
Blue
Orange
Yel/Blk
Control Connector Plug
Lock SW. 1
9 8 7
HIGH TEMP THERMAL SW.
Sensor Connector at Unit Rear
Unlock SW. 2
Sensor 1000 @RM 2562 @825ûF
Models JKS06 and JCKS06
CIRCUIT TERMINALS OHMS
Oven Sensor 4 to 6 *1100@Rm Temp.
* If abnormal reading is observed, remove sensor from oven and check at disconnect block. Wiggle leads while checking resistance. If more than 10 fluctuation in resistance occurs, replace sensor.
Models JKP28, JKP20, and JKCP20
SENSOR CONNECTOR
SENSOR 1100 @ ROOM TEMP.
HIGH TEMP THERMAL SW.
LOCK SW. 1
LOW TEMP THERMAL SW.
LOCK SW. 2
6
OVEN SENSOR CIRCUIT PINS 4 & 6
4
DOOR LATCH OUTPUT
3
-25 VDC AT ALL TIMES MEASURED TO GROUND
DOOR LATCH INPUT
2
DOOR UNLATCHED INPUT
1
Models ZEK938, ZET938, ZEK958, JTP86, JCK915, JCT915, JK915, JT915, and JT912
LOW TEMP
OVEN SENSOR AND LOCK SWITCH CONNECTOR
1 2
BU
3
O
4
Y
5
W
6
W
7 8
OVEN SENSOR 1100 @ RM. TEMP 2582 @ CLEAN TEMP Meat Probe Not On All Models
MEAT PROBE
30K-50K @m
THERMAL SW.
LOCK SW. #1
HIGH TEMP THERMAL SW.
UNLOCK
31
Page 34
Oven Circuits
Note: Bake and broil units cannot be on at the
same time. Bake and Time Bake Bake and Broil units operate sequentially during
Preheat. Broil unit is on approximately 25% of the time during the balance of the Bake operation,with approximately 1 minute of dead time between units.
Clean
Models JT912, JT952, JT915, JT955,JK915, and JK955
L1
SPDT
SPDT
Normally
Closed
SPST
Normally
Closed
Normally
Open
Normally
Open
Normally
Open
Broil unit is only on during the first 30 minutes or until oven reaches 750 °F. During the balance of the Clean operation, the oven will cycle between the bake and broil units, with 1 second of dead time between units while calling for heat.
Convection fan not running See page 36 for troubleshooting the convection
fan assembly.
Convection
Heater
SPST
Bake
Heater
Normally
Open
Broil
Heater
L2
Models JKP28, JTP28, JKP20, JCKP20, JTP20, JKP48, and JTP48
– 32 –
Set Point Table
Page 35
Model JT965
Oven Calibration
"L-1"
L1-2
16.6A
"L-1"
L1-2
16.6A
L1
BROIL BAKE
NC NC NO
L1
BAKE/TIME BAKE/CLEAN
CW CCW
240V.
BAKE
2700 W/21
BROIL
3600 W/15.5
BROIL
3600 W/15.5
CONV
BAKE
2500W
22
CAPACITOR
BROIL
3600W
16
CW CCW
BAKE-2
BROIL-2
BROIL & CLEAN
BROIL-2
CONVECTION BAKE
RY9
CONVECTION ROAST
L1-1 BR-1
RY9
M
14.2A
16.6A
CONV FAN
15.8
14.2A
DOOR
DOOR
SW
SW
DLB
DLB
"L-2"
cooking performance at a control setting of 350 °F (177 °C) when the AVERAGE center oven tem- perature is between 340 °F and 380 °F (171 °C and 193 °C), depending on model. Customers may change the average center oven temperature by
Testing has shown that this oven has the best
"L-2"
+/- 35 °F (+/- 20 °C) to satisfy their own cooking needs. This change will effect only the Bake mode.
To change:
Press and hold Bake & Broil pads until SF
L2
appears in display .
Press Bake pad to enter oven calibration
N
mode (separate for upper and lower). 00 or a number between +35 °F and -35 °F (+20 °C and -20 °C) will be displayed.
Press number pads (depending on model) to change average oven temperature. (Use Bake pad to switch between + or -settings, if using digit pads.)
or
Press Arrow pads to change average oven temperature.
Press START to return to Time of Day.
L2
N
Models JKP86 and JTP86
"L-1"
"L-1"
L1-2
16.6A
L1-2
16.6A
BAKE/TIME BAKE/CLEAN
BAKE-2
2700 W/21
BROIL-2
3600 W/15.5
BROIL & CLEAN
BROIL-2
3600 W/15.5
CAPACITOR
BAKE
BROIL
BROIL
M
CONV FAN
14.2A
16.6A
14.2A
"L-2"
DLB
"L-2"
DLB
33
Page 36
Motorized Door Lock
T op Oven
The motorized door lock assembly is located above the oven. The assembly consists of a lock motor cam and switch assembly, lock hook, heat barrier , and mounting plate.
Access to this assembly, for single and upper ovens, is behind the control panel. For lower ovens, access is behind the trim cover between the 2 ovens.
Motorized Door Lock Operation The lock motor is energized when the control is
set for Clean and Clean Time selected. The relay contact will close and complete the circuit that supplies the voltage to the lock motor. (See table for relay identification.)
Models, Single Oven Relay
JKP20, JKP28, JCKP20,JTP20, JTP28, K1 JTP86, and JT965
JK915, JCK915, JT912, JT915, JCT915, RY1 ZEK938, and ZET938
2 Screws
Monogram Lower Oven
2 Screws
Motorized Door Lock
2 Screws
Lower Oven
Relay
Models, Double Oven Upper Lower
JK955, JT952, JT955, ZEK958, K7 K8 and ZET958
JKP48 AND JTP48 K500 K501
Note: The display of the Control will flash LOCK if the door switch is in the C (common) to NC
LOCK SW. CIRCUIT
LOCK
HIGH TEMP
UNLOCK
THERMAL SW.
LOW TEMP THERMAL SW.
L
SENSOR AND LOCK SWITCH CONNECTORS
8
6
DOOR LATCH OUTPUT PIN -25VDC AT ALL TIMES MEASURED TO GROUND
5 4 3
DOOR UNLATCHED INPUT PIN
LOCKED
DOOR LOCKING OR UNLOCKING
LOCK RELAY
C MDL
*
LOCK
MOTOR
LOCK SW. CIRCUIT
LOCK
UNLOCK
N
DOOR
SWITCH
NO
C
HIGH TEMP THERMAL SW.
LOW TEMP THERMAL SW.
UNLOCKED
Lower Oven
(normally closed) position (Door open). Closing the door completes the circuit through the door
SENSOR AND LOCK SWITCH CONNECTORS
8
6
DOOR LATCH OUTPUT PIN -25VDC AT ALL TIMES MEASURED TO GROUND
5 4 3
DOOR UNLATCHED INPUT PIN
Lock Motor
Lock
Switch
ALL OTHER MODES WITH DOOR CLOSED
L
LOCK RELAY
C MDL
LOCK
MOTOR
*
*CN-01-4 used on JT965 and JTP86
NC
DOOR
SWITCH
NO
NC
Unlock
N
C
Switch
Lock Hook
– 34 –
Page 37
switch, C to NO (normally open) and enables the power to be delivered to the door lock.
The words LOCKED will flash on and off in the display while the lock motor is in motion. When the door is locked the words LOCKED remains illuminated in the display .
The cam on the motor performs two functions:
1. Positions the lock hook in the door to prevent
Oven Thermal Switch
Note: Oven thermal switch is used only on the
27-in. wall oven models. A self-resetting, disc-type thermal cutout switch is
mounted to the rear of the oven. The switch will open L2 to the heating elements in the event of an overtemperature condition. Single, lower oven, and microwave/oven combination switch opens at 284 °F (140 °C) and closes at 254 °F (123 °C). Upper oven switch opens at 302 °F (150 °C) and closes at 272 °F (133 °C).
There is no indication to the customer when the switch opens or closes.
opening during Clean operation.
2. Operates the lock switches that tell the control if the door is unlocked or locked and ready for Clean operation.
Note: When door is either being locked or un­locked, both lock switches will be in the open position.
Thermal Cutout Switch
Lock Thermal Switch
The thermal switches are located in the compo­nent compartment (see photo). The lock thermal switch circuit is in the normally closed position.
There are two thermal limit switches. One is for thermal protection during selfclean mode (located in the yellow neutral wire of the door lock circuit). It opens between 240 °F (116 °C) and 365 °F (185 °C), and closes between 190 °F (88 °C) and 293 °F (145 °C), depending on model.
The other thermal switch is for sensing cooling fan operation during non-selfclean modes only (lo­cated in unlock switch side of door lock motor circuit). It opens between 176 °F (80 °C) and 212 °F (100 °C) and closes between 149 °F (65 °C) and 185 °F (85 °C), depending on model.
If the thermal switch opens in any mode of opera­tion, the control will go to -F9- failure code. When this condition exists, check the fan operation (look for obstructions) and inspect oven installation (make sure grill areas are not blocked), oven insulation, and lock circuit.
Note: Oven must be removed from installation for access to the thermal cutout switch.
Door Lock Thermal Switch
Lower Oven Door Lock Thermal Switch
35
Page 38
Convection Bake Element and
SCREWS
(4)
FAN BLADE NUT
OVEN LINER
OVEN
INSULATION
OUTER BACK PANEL
CONV.
FAN
MTG.
SCREWS
(3)
CONV. FAN
COLLAR MTG. SHAFT
MOUNTING
SCREWS
(3)
FAN BLADE
Fan Assembly
For more even baking, the new convection fan rotates in both directions depending on mode (see table).
noitcevnoC
edoM
noitcevnoC
tsaoR
noitcevnoC
kcaR-itluM
esiwkcolC-retnuoC
emiTnoitatoR
YLNO
esiwkcolC-retnuoC
sdnoceS04sdnoceS01sdnoceS02
snoitceriD
ENONENON
neewteBemiTtseR
OUTER BACK
OVEN
INSULATION
OVEN LINER
FAN
esiwkcolC
emiTnoitatoR
SCREWS
(4)
BLADE NUT
PANEL
MOUNTING FAN BLADE
CONV.
FAN
MTG.
SCREWS
(3)
CONV. FAN
COLLAR MTG. SHAFT
SCREWS
(3)
noitcevnoC
kcaRelgniS
foorPetuniM1setuniM01etuniM1
ssetuniM3sdnoceS01setuniM3
The convection bake element and fan assembly are located on the back wall of the oven liner behind the panel with the screen in the center.
To access convection bake element:
1. Disconnect the power to range; remove the oven door and the oven racks.
2. Remove 4 screws from the mounting panel (2 on each side) and pull forward.
Troubleshooting: Convection fan not running.
Make the following checks:
Assumptions :
1. Checked relays are providing corrected voltage
outputs.
To remove convection bake element: Remove 3 screws mounting the element to the
back wall and pull forward. Disconnect the wires. To service fan: Note: Convection fan blade nut has left-handed
threads. Fan blade can be replaced from inside oven.
Oven must be removed from installation to access convection fan motor.
2. Control Compartment connectors are connected properly.
3. Capacitor will fail as an open or short.
Point 1 CW Windings Point 2 CCW Windings Point 3 Conv Fan Neutral
No Power Applied Measure Resistance Possible Failure Modes Pt 1 to 3 Pt 2 to 3 Pt 1 to 2
Conv. Fan CW winding Open Infinite n/a n/a Conv. Fan CCW winding Open n/a Infinite n/ a Capacitor Short n/a n/a 0
Power Applied Measure V olt age Possible Failure Modes Pt 1 to 3 Pt 2 to 3 Pt 1 to 2
Capacitor Open = Pt 2 to 3 = Pt 1 to 3 n/a
– 36 –
Point 3
Point 1
(RED)
Point 2 (GRAY)
(BLUE)
Note: Oven must be removed
from installation for access to the convection motor shown above. Refer to the schematic in the back of this manual for circuitry for your specific model.
Page 39
Schematics and Wiring Diagrams
Models JCK915, JK915, and ZEK938 Schematic
37
Page 40
Models JT952, JT955, and ZET958 Schematic
38
Page 41
Models JK955 and ZEK958 Schematic
39
Page 42
Model JTP20 Schematic
40
Page 43
Models JT912, JTC915, JT915, and ZET938 Schematic
41
Page 44
Models JCKP20, and JKP20 Schematic
42
Page 45
Models JCKS06 and JKS06 Schematic
43
Page 46
Model JTP28 Schematic
44
Page 47
Model JKP28 Schematic
45
Page 48
Models JKP48 and JTP48 Schematic
46
Page 49
Model JT965 Schematic
47
Page 50
Model JTP86 Schematic
48
Page 51
Model JKP86 Schematic
2295152P001
49
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