GE Monogram & 27 30 Inch Wall Ovens 31 9098

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GE Consumer Home Services Training

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
PUB # 31-9098

JTC915
JT952
JT955
JT965
JTP20
JTP28
JTP48
JTP86
ZEK938
ZEK958
ZET938
ZET958
12/02

!
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 © 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.

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

–1–

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

–2–

Introduction

Model JK915

Model JKP48

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.

–3–

Nomenclature
Model Number

J K P 8 6 C D 1 C C
GE Cooking Product
ZE = Monogram Electric

Product Color
CC = Bisque WW = White
BB = Black
AA = Almond
SS = Stainless Steel

Configuration
K = 27-in. Wall Oven
T = 30-in. Wall Oven

Indicator for Engineering and
Product Service Only

Oven Type
P = Self Clean
S = Standard

Model Year Designator

Feature Pack
Designates features–the higher
the number, the more features.

Glass Color
C = Bisque
W = White
B = Black
A = Almond
S = Stainless Steel

Model ZEK938
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 - JAN
D - FEB
F - MAR
G - APR
H - MAY
L - JUN
M - JUL
R - AUG
S - SEP
T - OCT
V - NOV
Z - DEC

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

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

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

–4–

Warranty
Built-In Electric Oven Warranty
For The Period Of:

GE Will Replace:

One Year
From the date of the
original purchase

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

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

■ Replacement of house fuses or resetting of circuit
breakers.

■ Improper installation.

■ Damage to the product caused by accident, fire, floods
or acts of God.

■ Failure of the product if it is abused, misused, or used
for other than the intended purpose or used
commercially.

■ Incidental or consequential damage caused by possible
defects with this appliance.

Microwave Cooking Center Warranty

For The Period Of:

GE Will Replace:

One Year
From the date of the
original purchase

Any part of the microwave cooking center which fails due to a defect in materials
or workmanship. During this full one-year warranty, GE will also provide,
free of charge, all labor and in-home service to replace the defective part.

Limited Additional
Four Years
For the second through
the fifth year from date
of the original purchase

A replacement magnetron tube if the magnetron tube fails because of a
manufacturing defect. During this limited additional four-year warranty, you
will be responsible for any labor or in-home service.

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

■ Replacement of house fuses or resetting of circuit
breakers.

■ Improper installation.

■ Damage to the product caused by accident, fire, floods
or acts of God.

■ Failure of the product if it is abused, misused, or
used for other than the intended purpose or used
commercially.

■ Incidental or consequential damage caused by possible
defects with this appliance.

This warranty is extended to the original purchaser and any succeeding owner for products purchased for
. the warranty excludes the cost of shipping or service calls to your home.
home use within the USA. In Alaska,
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

–5–

Control Panel Features
Oven Controls
Models ZEK938, ZEK958, ZET938, and ZET958
Throughout this manual, features and appearance may vary from your model.

Double oven control shown. (Appearance may vary.)

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.

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.

8 DISPLAY. Shows the operations you have
selected, the time of day and the cooking
or cleaning status.
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.

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.

–6–

Oven Controls
Models JK915, JK955, JT915, and JT955
Throughout this manual, features and appearance may vary from your model.

Double oven control shown.

Oven Control, Clock and Timer Features and Settings
BAKE Pad

SELF CLEAN STD/LOW Pad

Press to select the bake function.

BROIL HI/LO Pad

Press to select self-cleaning function. See
the Using the self-cleaning oven section.

Press to select the broil function.

OVEN LIGHT ON/OFF Pad

CONVECTION BAKE MULTI/1 RACK Pad

Press to turn the oven light on or off.

Press once to select convection baking with
multiple racks.
Press twice to select convection baking with
one rack.

DELAY START Pad

CONVECTION ROAST Pad

COOK TIME Pad

Press to select roasting with the convection
function.

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.

PROOF Pad
Press to select a warm environment useful
for rising yeast-leavened products.

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.

CLEAR/OFF Pad

START Pad
Must be pressed to start any cooking or
cleaning function.

Press to cancel ALL oven operations except
the clock and timer.

CLOCK Pad

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.

–7–

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 Controls
Models JT912 and JT952
Throughout this manual, features and appearance may vary from your model.

Double oven control shown.

Oven Control, Clock and Timer Features and Settings
BAKE Pad

SELF CLEAN STD/LOW Pad

Press to select the bake function.

Press to select self-cleaning function. See
the Using the self-cleaning oven section.

BROIL HI/LO Pad

OVEN LIGHT ON/OFF Pad

Press to select the broil function.

Press to turn the oven light on or off.

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.

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.

KITCHEN TIMER ON/OFF Pad
Press to select the timer feature.

PROBE Pad
Press when using the probe to cook food.

–8–

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).

–9–

Microwave Oven Control Features and Settings
Display

POWER LEVEL

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).

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.

AUTO SENSOR AND CONVENIENCE
CONTROLS
The top row of pads lists specific items
you may choose to heat or cook.

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

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.

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.

TIME DEFROST
Use Time Defrost for most other foods.

DELAY START

AUTO DEFROST

Allows you to set the microwave to
delay cooking up to 12 hours.

Use Auto Defrost for meat, poultry
and fish.

ADD 30 SEC

TIME COOK

Each time you press this pad the set
time is increased 30 seconds.

Allows you to microwave for any time up
to 99 minutes and 59 seconds.

CLOCK
Press this pad before setting the clock.

– 10 –

Lower Oven Controls
Models JKP86 and JTP86
Throughout this manual, features and appearance may vary from your model.

– 11 –

Lower Oven Control, Clock and Timer Features and Settings
Display

CLEAR/OFF Pad

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.

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

BROIL HI/LO 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.

Press to select the broil function.

CLOCK Pad

The time of day (may be incorrect) will flash
in the display when the there has been a
power outage.

Press before setting the clock.

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.

– 12 –

Oven Controls
Model JKS06
Throughout this manual, features and appearance may vary from your model.

Oven Control, Clock and Timer Features and Settings
BAKE Pad

DELAY START Pad

Press this pad to select the bake function.

Use along with COOKING TIME pad to set
the oven to start and stop automatically at
a time you set.

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.

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

START Pad
Must be pressed to start any cooking
function.

Press these pads to set the cooking
temperature you want to use.

OVEN LIGHT ON/OFF Pad

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.

– 13 –

Press this pad to turn the oven light on
or off.

BROIL HI/LO Pad
Press this pad to select the broil function.

Microwave Oven Controls
Model JT965
Throughout this manual, features and appearance may vary from your model.

Microwave Oven Control Features and Settings
Display

ADD 30 SEC

Displays the time during cooking
functions, the power level being used,
the Auto Codes, the Auto Defrost food
weights, the cooking mode and instructions.

Each time you press this pad the set time is
increased 30 seconds.

DEFROST AUTO/TIME

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).

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.

AUTO SENSOR CONTROLS

Use Auto Defrost for meat, poultry
and fish.

The top row of pads lists specific items you
may choose to heat or cook.
POPCORN
Use to pop popcorn.

TIME COOK

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.

Use Time Defrost for most other foods.

CHICKEN/FISH
Use when cooking chicken pieces or fish
fillets.

– 14 –

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.

Lower Oven Controls
Model JT965
Throughout this manual, features and appearance may vary from your model.

Lower Oven Control, Clock and Timer Features and Settings
Display

CLEAR/OFF Pad

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.

Press to cancel ALL oven operations except
the clock and timer.

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).

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.

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.

START Pad

If your oven was set for a timed oven operation and
a power outage occurred, the clock and all programmed
functions must be reset.

KITCHEN TIMER ON/OFF Pad

The time of day (may be incorrect) will flash in the
display when there has been a power outage.

OVEN LIGHT Pad

Must be pressed to start any cooking or
cleaning function.
Press to select the timer feature.
Press to turn the oven light on or off.

BROIL HI/LO Pad

DELAY START Pad

Press to select the broil function.
Press to select the bake function.

Use along with COOKING TIME or SELF
CLEAN pads to set the oven to start and stop
automatically at a time you set.

CONVECTION BAKE Pad

COOKING TIME Pad

BAKE Pad

Press to select baking with convection.

CONVECTION ROAST Pad
Press to select roasting with convection.

– 15 –

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.

Oven Controls
Models JKP20, JTP20, JKP28, JTP28, JKP48,
Throughout this manual, features and appearance may vary from your model.

Double oven control shown

Oven Control, Clock and Timer Features and Settings
BAKE Pad

DELAY START Pad

Press this pad to select the bake function.

Use along with COOKING TIME or SELF
CLEAN pads to set the oven to start and stop
automatically at a time you set.

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.

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.

OVEN LIGHT ON/OFF Pad
Press this pad to turn the oven light on or off.

Lower Oven Control Settings on models with a knob
OVEN Knob

The OVEN CYCLE light glows until the oven reaches your
selected temperature, then goes off and on with the oven
element(s) during cooking.

Turn this knob to
the temperature
setting you want.

5
– 16 –

Oven
Lift-Off Oven Door
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.

Slot

Hinge arm

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.

Hinge lock (unlocked position)

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:
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.

Bottom
edge
of slot

he
f the
o the
f the

Hinge arm

Indentation

Locked position

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.).

Sealed hinge arm

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.

3 Screws

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.
– 17 –

2 Screws

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.

2 Screws

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.
3. Remove 6 screws and the insulation retainer.
The window pack and window gasket are now
accessable on units with a window door.

3 Screws

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.
4 Screws

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.

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.
Window
Pack and
Gasket

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 –

3. Continue this process all the way around the
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 installed, 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 panel
Gasket
6"

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

3 Screws

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.

2 Screws

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.

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 –

3 Screws

Electronic Oven Control System

Models ZEK938, ZET938, JK915, JT915, JCK915,
JCT915, and JT912

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.

Models JKP20, JCKP20, JKS06, and JCKS06

Control Panel Access
1. Disconnect the power and open the oven door.
2. Remove 3 screws from across the bottom of
the control panel.
3. Push up on the control panel assembly to
release the top catches.

Models JKP48, and JTP48

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.

Models JPT20 and JKP28
g

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 illustrations). 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 JT965 and JTP86

Model JKP86
14
P102

CN-02

MEAT
PROBE

OVEN
SENSOR

COMMON
LOCKED
UNLOCKED

Models ZEK958, ZET958, JK955, JT953, and JT955

RIBBON
CONNECTOR
L1
BAKE

BROIL
MDL CFAN LAMP

CN-O1
CONVECTION
(If equipped)

LATCH
MOTOR

SENSR1

CONV OVEN
LAMP
FAN
(If equipped)

BROIL

COMMON

LOCK

-N-

UNLOCK
BAKE
MOTOR1 MOTOR2 SENSR2
LAMP

– 20 –

Models ZEK958, ZET958,
JK955, JT952, and JT955
Daughter Board

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 JKP20, JCKP20, JKS06, and JCKS06
TERMINALS
L1A & B TO N

*OVL1–OVL2

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.

AUX1–N

120 VAC locking or unlocking.

DLB TO BAKE
DLB TO BROIL

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

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).

L1 TO MDL 1 & 2

120 VOLTS locking or unlocking.

**L1-to CON J6 Term 5 &
6 (See Conv. Fan Assy.)

120 VOLTS when oven door is
closed and Conv. Bake, Conv.
Roast not operating.

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

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
L1 TO MDL 1 & 2
whencooling
oven door
L1-to
CONJ6J6Term
Term
120 VOLTS when
fan isis
L1
- to CON
6 5 120
and Conv.
Bake,
Conv.
& 6 (See Conv. Fan closed
not running,
0 VOLTS
when
Roast
Assy.)
coolingnot
fanoperating.
is running.

Model JKP28
TERMINALS
L1
N
L1A&&BB- -N
AUX1

VOLTAGE
120 VAC ALL THE TIME.
120 VAC ALL THE TIME.

DLB TO BROIL

240 VOLTS when oven is not calling
for heat (BAKE and BROIL relay
contacts open).

*OVL2–L1

120 VAC when light is on.

AUX2–N

120 VAC locking or unlocking.

DLB TO BAKE

Model JKP28
TERMINALS
L1-N
AUX1

VOLTAGE
120 VAC ALL THE TIME
120 VAC ALL THE TIME

DLB TO BROIL

240 VOLTS when oven is not calling
for heat (BAKE and BROIL relay
contacts open).

J4 5 to 7

120 VAC when light is off.

AUX2 - N

120 VAC locking or unlocking.

DLB TO BAKE

120 VOLTS when light is on.

•

Model JKP86
TERMINALS
L1 TO N
L1 TO BAKE
L1 TO BROIL
*LAMP-L1

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.

MOTOR 1-MOTOR 2 120 VAC not locking or unlocking, door closed.

Models ZEK958, ZET958, JK955, JT953, and JT955
TERMINALS

Models JKP48 and JTP48

•
•

VOLTAGE

L1-N (CN01-1)

120 VAC ALL THE TIME

L1 TO BAKE
L1 TO BROIL
L1 TO CONVECT

240 VOLTS when oven is not calling for heat
(BAKE and BROIL relay contacts open).

*CNO1-2 TO L1

120 VAC when light is on.

N TO CN01-4

120 VOLTS not locking or unlocking, door closed.

L1 TO CN01-3

120 VOLTS when oven door is closed, fan off.

*If oven light is not working, make the following checks:
• Check oven light bulb.
• Light is to come on when the door is opened–check
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 Ω at room temp. Check to make sure the
fan shaft is not rubbing on the oven liner.
• Check Door Switch.

– 21 –

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 Time 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.
If some of the pads work and some don’t, 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 –

Ribbon Cable Connections

Ohmmeter Test
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 don’t, 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 Ω
when pressing a pad.

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

Models JT912
FUNCTION
1
2
3
4
5
6
7
8
9
0
Short

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

HP DIGI
MEMBRANE PINS
3 to 9
4 to 9
3 to 11
4 to 11
4 to 6
3 to 7
4 to 7
3 to 10
4 to 10
4 to 5
1 to 11
2 to 12

1
2
3
4
5
6
7
8
9
10
11
12
13
14

HP DIGI
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

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.

CONDUCTORS
Ohmmeter Test
1
12 to 14
2
Set ohmmeter on high
3
11 to 14
scale. Connect leads to
4
9 to 14
ribbon cable as
5
9 to 13
indicated in chart for
6
11 to 13
7
each function. Press
8
12 to 13
function pad. Meter
9
10 to 14
should read less than
10
10 to 13
11
5000Ω if the switch
3 to 4
12
contact is working.
13
1 to 2
14
6 to 13
6 to 14
7 to 13
NOTE: Replacement touch pads come as
7 to 14
part of the control panel assembly.
8 to 13
8 to 14

GLASS TOUCH MODELS

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
12 to
ro 13
10 to 14
10 to 13
3 to 4
9 to 14
1 to 2
6 to 13
6 to 14

Model JKP48 and JTP48

NOTE: Replacement touch pads
come as part of the Control Panel.
Up Hour
Dn Hour
UP Min
Dn Min

7 to 13
7 to 14
8 to 13
8 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 to
ro 13
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

Up Hour
Dn Hour
UP Min
Dn Min

7 to 13
7 to 14
8 to 13
8 to 14

– 23 –

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
-------------------------------------

Ohmmeter Test continued
Model JT952

Model JKP86

without pressing the pad, the key panel is bad.

NOTE: Replacement touch pads come as
part of the Control panel.
Function
Bake
Broil
Oven Light
Cooking Time
Delay Start Time
Kitchen Timer
Clock
Clear/Off

1
2
3
4
5
6
7
8
9
10
11
12
13
14

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

Start
1
2
3
4
5
6
7
8
9
0

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

UPPER OVEN
CONDUCTOR
FUNCTION
BAKE
5–10
BROIL
4–10
CONV. BAKE
6–10
CONV. ROAST
2–11
COOKING TIME
5–11
DELAY START TIME
1–10
CLEAN
3–11
OVEN LIGHT
1–11
START
2–10
CLEAR
2–13
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
Digit pad type only
Short
1–13
7–5
2–14

Models JT965 and JTP86

FUNCTION
PROBE
1
2
3
4
5
6
7
8
9
0

CONDUCTORS
3 to 4
1 to 4
2 to 11
1 to 11
1 to 10
3 to 10
1 to 9
3 to 9
13 to 14
12 to 14

CONDUCTORS
3 to 11
3 to 6
3 to 5
3 to 8
3 to 7
1 to 6
1 to 5
1 to 8
2 to 6
2 to 5
2 to 8

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 5000Ω if the
switch contact is working.

NOTE: Flat cable conductors are on either
side, but not both sides.

1
2
3
4
5
6
7
8
9
10
11
12
13
14

FUNCTION
BAKE
BROIL
CLEAN
OVEN LIGHT
COOKING TIME
DELAY START TIME
KITCHEN TIMER
CLOCK
CLEAR/OFF
START

NOTE: Replacement touch pads come as part of
the control panel.

– 24 –

LOWER OVEN
CONDUCTOR
4–8
3–9
—
—
3–8
1–9
2–8
6–9
2–9
5–14

NOTE: Conductors are
on either side but not
on both.

5) If steps 2 through 4 do not occur as described,
repeat the process.

Glass Touch Models ONLY
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 resistance 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:
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.

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.”
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.

Steps to Follow if the Control NOT Replaced
Step

Key presses
(Digi-pad)

Key presses
(Slew -pad)

Action

Bake & Broil

Enter SF

9&0

Hour Down &
Minute Down

Reset Control

Steps to Follow if the Control IS Replaced
Step

Key presses
(Digi-pad)

Key presses
(Slew -pad)

Action

1&5

Temp Up &
Minute Up

Reset
LOCK REF

6&8

Hour Down &
Minute Up

Acknowledge
LOCK REF

6&8

Hour Down &
Minute Up

Acknowledge
LOCK REF

– 25 –

ERC Failure Codes
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,

they can be recalled by pressing together:
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).

Models JKP28, JTP28, JKS06, JCKS06, JKP20, JCKP20, and JTP20

FAILURE
MEANING
CODE
Shorted OFF key
F0

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.

Oven temperature
inside oven cavity as
measured by sensor
over 650°F unlatched
or 915°F latched

• Welded relay contacts
• Airflow to rear of unit
• High resistance in oven sensor leads/connectors
(especially at sensor in rear)

Open oven sensor
(over 3000 ohms)

• 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.

Shorted oven sensor
(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 deg change.
• Separate sensor from harness to determine fault.

Sensor Circuit supervisor
failure

Replace Control.

Shorted matrix or START
key

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.

EEPROM data shift failure

If repeated, replace control.

Cooling fan stall or other
cause of open thermal
switches in yellow or blue
latch leads

Suspect cooling fan (between ovens) or airflow.

– 26 –

Models JCK915, JCT915, JK915, JT915, JK955, JT955, ZEK938, ZET938, ZEK958, and ZET958
FAILURE
CODE
F0

CORRECTION

MEANING

Shorted OFF key

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°F—open thermal
switch in yellow leads

Determine if problem is with Key Panel or Control
by disconnecting ribbon cable and measuring flat
cable pins 13–14. Should be open. Should be 100–
<300
Ω while
pressing
OFFOFF
key. key.
150 ohms
while
pressing
• 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)

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 damaged harness terminals if not a bad
sensor.

Shorted oven sensor
(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.

Sensor circuit supervisor
failure

Replace control.

Shorted matrix or START
key

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.

EEPROM data shift failure

If repeated, replace control.

Cooling fan stalls while oven
above 650°F—open thermal
switch in yellow
or blue
latch leads.
switch
in yellow
leads

Cooling fan or airflow to control area.

Model JT912
FAILURE
CODE
MEANING
-F0- Shorted OFF key
or open short.

CORRECTION
Determine if problem is with Key Panel or Control by
disconnecting ribbon cable and measuring flat cable pins
2 - 11. Should be open. Should be 100–150
<300 Ω while
pressing
13–14.
ohms
while
OFF
key. OFF key.
pressing

-F2- Over temperature

• Welded relay contacts
• Cooling fan stalled or blocked
1. Inside oven cavity as measured by
• Airflow to rear of unit
sensor over 650°F unlatched or 915°F
• High resistance in oven sensor leads/
latched, or
connectors (especially at sensor in rear)
2. Cooling fan stalls while oven above
650°F—open thermal switch in yellow
leads
-F3- Open oven sensor
• Disconnect power. Disconnect sensor harness from
control. Measure sensor resistance (white leads) to be
(over 2900 ohms)
-1080 ohms at room temperature with 2 ohms per degree
change.
• Look for damage harness terminials if not a bad sensor.

-F4-

Shorted oven
sensor (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

If repeated, replace control.

-F9-

Cooling fan stalls while oven above
650°F—open thermal switch in
blue leads.
yellow or
leads

Cooling fan or airflow to control area.

-FF-

Loss of latch motor safety circuit

Replace control.

– 27 –

Model JT952
FAILURE
CODE
MEANING
-F0- Shorted OFF key
or open short.

CORRECTION
Determine if problem is with Key Panel or Control by
disconnecting ribbon cable and measuring flat cable pins
5 - 14. Should be open. Should be 100–150
<300 Ω while
pressing
13–14.
ohms
while
OFF
key. OFF key.
pressing

-F2- Over temperature

-F4-

Shorted oven
sensor (under 950
ohms)

-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

If repeated, replace control.

-F9-

Cooling fan stalls while oven above
650°F—open thermal switch in
blue leads.
yellow or
leads

Cooling fan or airflow to control area.

-FF-

Loss of latch motor safety circuit

Replace control.

Models JT965 and JTP86
FAILURE
CODE
MEANING
-F0- Shorted OFF key
or open short.

CORRECTION
Determine if problem is with Key Panel or Control by
disconnecting ribbon cable and measuring flat cable pins
13-14. Should be open. Should be 100–150
<300 Ω while
pressing
13–14.
ohms
while
OFF
key. OFF key.
pressing

-F2- Over temperature

-F4-

Shorted oven
sensor (under 950
ohms)

-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

If repeated, replace control.

-F9-

Cooling fan stalls while oven above
650°F—open thermal switch in
blue leads.
yellow or
leads

Cooling fan or airflow to control area.

-FF-

Loss of latch motor safety circuit

Replace control.

– 28 –

Model JKP86
FAILURE
CODE
MEANING
-F0Stuck key pad
-F7may mean relay is
turned on.

CORRECTION
Determine if problem is with the Key Panel or Control
by:
1. Pushing CLEAR/OFF pad,

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-

Indicates that oven is over
temperature in one of the
following modes within
either a cooking or clean
mode of operation.
• 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.

• 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.).

-F3-F4-

Open or shorted sensor
(circuit). Could be a result
of contamination on
terminals or pinched wire in
sensor circuit, cold solder
joint on control.

• Disconnect power to range. Disconnect
sensor connector from control.
• Measure sensor resistance at control
connector (take care not to damage
terminals). Should read 1100Ω 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.

-FF-

Loss of door motor safety
circuit.

Replace control.

Models JTP48 and JKP48
FAILURE
MEANING
CODE
Shorted OFF key
F0

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.

Oven temperature inside oven
cavity as measured by sensor
over 650°F unlatched or 915°F
latched

Open oven sensor
(over 3000 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 damaged harness terminials if not a bad
sensor.

Shorted oven sensor
(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.

Sensor circuit supervisor
failure

Replace control.

Shorted matrix or
START key

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.

• Welded relay contacts
• Airflow to rear of unit
• High resistance in oven sensor leads/
connectors (especially at sensor in rear)

EEPROM data shift failure If repeated, replace control.

Cooling fan stalls or other
cause of open thermal
switches in yellow or blue
latch leads

Suspect cooling fan (between ovens) or airflow.

– 29 –

Auto RecipeTM 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.

•

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.

•

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.

•

Oven Sensor and Door Switch
Ohmmeter Test
See Motorized Door Lock Operation, page 34, for
door switch function explanation.

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.

Disconnect power to range. Make resistance
measurement from side of sensor and lock switch
connector with exposed terminals disconnected
from control.
Models ZEK958, ZET958, JK955, and JT955
CIRCUIT

TERMINALS

UPPER
OVEN
Oven Sensor
6 to 8
Door Unlatched 3 to 5
4 to 5
Door Latched
4 to 5
3 to 5

LOWER
OVEN
3 to 4
6 to 8
6 to 7
6 to 7
6 to 8

OHMS

*1100Ω@Rm Temp.
0Ω
Open
0Ω
Open

Models ZEK938, JCK915, JTP86, JK915 and JT965

Sabbath Mode (GE models only) disables all
but Bake and Timed Bake, disables beeps,
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.

CIRCUIT
Oven Sensor

TERMINALS OHMS
6 to 8
1100Ω @ Rm Temp.*
2562Ω @ 825°F
Door Unlatched 3 to 5
0Ω
4 to 5
open
Door Latched
4 to 5
0Ω
3 to 5
open

Model JKP28, JTP28, JTP20, and JKP28
CIRCUIT
Oven Sensor

TERMINALS
4J1to4 6to 6

Door Unlatched

1J1to1 3to 3
2J1to2 3to 3
2J1to2 3to 3
1J1to1 3to 3

Door Latched

OHMS
*1100Ω@Rm Temp.
2562Ω@ 825°F . Clean
0Ω
open
0Ω
open

* If abnormal reading is observed, remove sensor from oven and
check at disconnect block. Wiggle leads while checking resistance.
If more than 10Ω fluctuation in resistance occurs, replace sensor.

– 30 –

Model JKP86
CIRCUIT
Oven Sensor

Sensor and Lock Switch Connectors
TERMINALS

Door Unlatched Common-unlock
Common-lock
Door Latched
Common-lock
Common-unlock

Models ZET958, JK955, JT952, JT955, JKP48,
JKT48, and JTP48

OHMS
*1100Ω@Rm Temp.
2562Ω@ 825°F Clean
0Ω
Open
0Ω
Open

LOW TEMP
THERMAL SW.

UPPER OVEN SENSOR AND LOCK
SWITCH CONNECTOR

Models JTP48

LOCK
SW. #1

(ON SOME MODELS)
MEAT PROBE
30K-50K @ rm

CONTROL
CONNECTOR 12
PLUG
3
4
5
6
7
8

LOCK SW. #2
UNLOCK

HIGH TEMP
THERMAL SW.
OVEN SENSOR
1100 @ RM. TEMP
2562 @ CLEAN TEMP

LOWER OVEN SENSOR AND LOCK
SWITCH CONNECTOR

CIRCUIT

TERMINALS

UPPER
OVEN
Oven Sensor
6 to 8
Door Unlatched 3 to 5
4 to 5
Door Latched
4 to 5
3 to 5

OHMS

SENSOR
1100 @ RM
2562 @ 825 F

1
2
CONTROL
3
CONNECTOR 4
PLUG
5
6
7
8

LOWER
OVEN
1 to 2
1100Ω @ Rm Temp.*
4 to 6
0Ω
4 to 5
Open
4 to 5
0Ω
4 to 6
Open

LOCK
SW
1
LOCK

LOCK
SW
2
UNLOCK

HIGH TEMP
THERMAL SW.

LOW TEMP
THERMAL SW.
MEAT PROBE
30K-50K @ rm
(ON SOME MODELS)

Model JKP86
LOW TEMP
THERMAL SW.

Models ZET938, JCT915, JT915, and JT912
9

Blue
Orange
Yel/Blk

CIRCUIT
Oven Sensor

TERMINALS
OHMS
6 to 8
1100Ω @ Rm Temp.
2650Ω @ 865°F
Door Unlatched 3 to 5
0Ω
4 to 5
open
Door Latched
4 to 5
0Ω
3 to 5
open

Lock
SW. 1

Unlock
SW. 2

8
7

Control
Connector
Plug

HIGH TEMP
THERMAL SW.
Sensor
Connector at
Unit Rear

Sensor
1000 @RM
2562 @825ûF

Models JKP28, JKP20, and JKCP20
Models JKS06 and JCKS06
SENSOR CONNECTOR

CIRCUIT
Oven Sensor

TERMINALS
4 to 6

SENSOR
1100 @
ROOM
TEMP.

OHMS
*1100Ω@Rm Temp.

4
3

DOOR LATCH OUTPUT
-25 VDC AT ALL TIMES
MEASURED TO GROUND

DOOR LATCH INPUT

DOOR UNLATCHED INPUT

HIGH TEMP
THERMAL SW.

LOCK SW. 1

* If abnormal reading is observed, remove sensor from oven and
check at disconnect block. Wiggle leads while checking resistance.
If more than 10Ω fluctuation in resistance occurs, replace sensor.

OVEN SENSOR
CIRCUIT
PINS 4 & 6

LOCK SW. 2
LOW TEMP
THERMAL SW.

Models ZEK938, ZET938, ZEK958, JTP86,
JCK915, JCT915, JK915, JT915, and JT912
OVEN SENSOR
AND LOCK SWITCH
CONNECTOR
1
2
3
4
5
6
7
8

– 31 –

MEAT PROBE

BU
O
Y
W

LOW TEMP
THERMAL SW.

UNLOCK
LOCK
SW. #1

30K-50K @m

W
HIGH TEMP
THERMAL SW.
OVEN SENSOR
1100 @ RM. TEMP
2582 @ CLEAN TEMP
Meat Probe Not On All Models

Models JT912, JT952, JT915, JT955,JK915, and
JK955

Oven Circuits
Note: Bake and broil units cannot be on at the
same time.

L1
SPDT

Bake and Time Bake

Normally
Closed

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.

Normally
Open

SPDT
Normally
Closed

Normally
Open

SPST

Clean
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
Heater

Bake
Heater

SPST

Convection fan not running
See page 36 for troubleshooting the convection
fan assembly.

Broil
Heater

Normally
Open

Models JKP28, JTP28, JKP20, JCKP20, JTP20,
JKP48, and JTP48

Set Point Table

– 32 –

Model JT965

Oven Calibration
BAKE/TIME BAKE/CLEAN

"L-1"

"L-2"

BAKE

DLB

BAKE-2

14.2A
2700 W/21

BROIL
BROIL-2

L1-2
16.6A

16.6A
3600 W/15.5

BROIL & CLEAN

"L-1"

"L-2"

BROIL
L1-2
16.6A

DLB

BROIL-2

14.2A
3600 W/15.5

CONVECTION BAKE
L2

L1
BROIL

BAKE

CONV
BAKE
2500W
22

RY9
CW

DOOR
SW

CCW

CONV
FAN

CAPACITOR

CONVECTION ROAST
240V.

L1
L1-1

Testing has shown that this oven has the best
cooking performance at a control setting of 350 °F
(177 °C) when the AVERAGE center oven temperature is between 340 °F and 380 °F (171 °C
and 193 °C), depending on model. Customers
may change the average center oven temperature
by
+/- 35 °F (+/- 20 °C) to satisfy their own cooking
needs. This change will effect only the Bake
mode.

BR-1

To change:
• Press and hold Bake & Broil pads until SF
appears in display.
• Press Bake pad to enter oven calibration
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.

BROIL
15.8
3600W
16

RY9
CW

DOOR
SW

CCW

CONV
FAN

CAPACITOR

Models JKP86 and JTP86
"L-1"

BAKE/TIME BAKE/CLEAN

"L-2"

BAKE
BAKE-2

DLB
14.2A

2700 W/21

BROIL
L1-2
16.6A

"L-1"

BROIL-2

16.6A
3600 W/15.5

BROIL & CLEAN

"L-2"

BROIL
L1-2
16.6A

DLB

BROIL-2

14.2A
3600 W/15.5

– 33 –

Motorized Door Lock

Top 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.

Motorized
Door Lock

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.

2 Screws

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.)

2 Screws
Monogram Lower Oven

Models, Single Oven

Relay

JKP20, JKP28, JCKP20,JTP20, JTP28,
JTP86, and JT965

JK915, JCK915, JT912, JT915, JCT915,
ZEK938, and ZET938

RY1

2 Screws

Lower Oven

Relay
Upper Lower

Models, Double Oven

Lower Oven
JK955, JT952, JT955, ZEK958,
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
SENSOR AND LOCK
SWITCH CONNECTORS

LOCK

LOCK SW. CIRCUIT
SENSOR AND LOCK
SWITCH CONNECTORS

LOCK

UNLOCK

HIGH TEMP
THERMAL SW.

LOW TEMP
THERMAL SW.

6
5
4
3

(normally closed) position (Door open). Closing
the door completes the circuit through the door

DOOR LATCH OUTPUT PIN -25VDC
AT ALL TIMES MEASURED TO GROUND

UNLOCK

HIGH TEMP
THERMAL SW.

DOOR UNLATCHED INPUT PIN
LOW TEMP
THERMAL SW.

LOCKED

6
5
4
3

DOOR LATCH OUTPUT PIN -25VDC
AT ALL TIMES MEASURED TO GROUND
DOOR UNLATCHED INPUT PIN

Lock Motor

UNLOCKED

DOOR LOCKING OR UNLOCKING
LOCK RELAY
L
C

*
MDL

LOCK
MOTOR

Lock
Switch

DOOR N
SWITCH
NO
C
NC

Unlock
Switch

ALL OTHER MODES WITH DOOR CLOSED
LOCK RELAY
L
C

MDL

LOCK
MOTOR

DOOR
SWITCH
NO
C

Lock
Hook

NC
*CN-01-4 used on JT965 and JTP86

– 34 –

opening during Clean operation.

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:

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.

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).

Thermal
Cutout
Switch

There is no indication to the customer when the
switch opens or closes.

Note: Oven must be removed from installation for
access to the 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.

Door Lock
Thermal
Switch

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.

– 35 –

Lower Oven
Door Lock
Thermal Switch

Convection Bake Element and
Fan Assembly
OVEN
INSULATION

For more even baking, the new convection fan
rotates in both directions depending on mode (see
table).
Convection
Mode

Counter-Clockw ise
Rotation Time

Rest Time Betw een
Directions

Clockw ise
Rotation Time

Convection
Roast

ONLY
Counter-Clockwise

NONE

Convection
Multi-Rack

40 Seconds

10 Seconds

20 Seconds

Convection
Single Rack

3 Minutess

10 Seconds

3 Minutes

1 Minute

10 Minutes

1 Minute

Proof

CONV.
FAN
MTG.
SCREWS
(3)

OUTER
BACK
PANEL

OVEN
LINER

CONV.
FAN

FAN
BLADE
NUT

COLLAR
MTG.
SHAFT

SCREWS
(4)

MOUNTING
SCREWS
FAN
(3)
BLADE

To remove convection bake element:

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.

Remove 3 screws mounting the element to the
back wall and pull forward. Disconnect the wires.

To access convection bake element:

To service fan:

1. Disconnect the power to range; remove the
oven door and the oven racks.

Note: Convection fan blade nut has left-handed
threads.

2. Remove 4 screws from the mounting panel (2
on each side) and pull forward.

Fan blade can be replaced from inside oven.
Oven must be removed from installation to
access convection fan motor.

Troubleshooting:
Convection fan not running.
Make the following checks:
Assumptions :
1. Checked relays are providing corrected voltage
outputs.
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
Possible Failure Modes

Pt 1 to 3

Point 1
(RED)

Measure Resistance
Pt 2 to 3
Pt 1 to 2

Conv. Fan CW winding Open

Infinite

n/a

Conv. Fan CCW winding Open

n/a

Infinite

n/a

Capacitor Short

n/a

Power Applied
Possible Failure Modes
Capacitor Open

Pt 1 to 3

Measure Voltage
Pt 2 to 3

Pt 1 to 2

= Pt 2 to 3

= Pt 1 to 3

n/a

– 36 –

Point 3
(BLUE)
Point 2
(GRAY)

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.

Schematics and Wiring Diagrams
Models JCK915, JK915, and ZEK938 Schematic

– 37 –

Models JT952, JT955, and ZET958 Schematic

– 38 –

Models JK955 and ZEK958 Schematic

– 39 –

Model JTP20 Schematic

– 40 –

Models JT912, JTC915, JT915, and ZET938 Schematic

– 41 –

Models JCKP20, and JKP20 Schematic

– 42 –

Models JCKS06 and JKS06 Schematic

– 43 –

Model JTP28 Schematic

– 44 –

Model JKP28 Schematic

– 45 –

Models JKP48 and JTP48 Schematic

– 46 –

Model JT965 Schematic

– 47 –

Model JTP86 Schematic

– 48 –

Model JKP86 Schematic

2295152P001

– 49 –

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Metadata Date                   : 2003:01:08 18:14:12-05:00

EXIF Metadata provided by EXIF.tools

GE Monogram & 27 30 Inch Wall Ovens 31 9098

Ge & Monogram 27 & 30 Inch Wall Oven 31-9098 GE & Monogram 27 & 30 Inch Wall Oven 31-9098 GE & Monogram 27 & 30 Inch Wall Oven 31-9098 GE, Camco, Hotpoint, Mofat applianceservicesecretsmembership.com_manuals

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