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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JTC915

JT952

JT955

JT965

JTP20

JTP28

JTP48

JTP86

ZEK938

ZEK958

ZET938

ZET958

PUB # 31-9098 12/02

MODEL SERIES:

TECHNICAL SERVICE GUIDE

GE Consumer Home Services Training

JCKSO6

JCKP20

JCK915

JK915

JK955

JKP20

JKP28

JKP48

JKP86

JKS06

JT912

JT915

GE and Monogram

27-In. and 30-In. Wall Ovens

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 prod-

uct. 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.

!

– 1 –

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

– 2 –

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

– 3 –

Introduction

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-and-

oven 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 Built-

In Electric Wall Ovens effectively and efficiently.

Model ZET958

Model JK915

Model JKP48

– 4 –

Feature Pack

Designates features–the higher

the number, the more features.

Nomenclature

Model Number

Serial Number

The first two characters of the serial number

identify the month and year of manufacture.

Example: AA123456S = January, 2001

A - JAN 2005 - H

D - FEB 2004 - G

F - MAR 2003 - F

G - APR 2002 - D

H - MAY 2001 - A

L - JUN 2000 - Z

M - JUL 1999 - V

R - AUG 1998 - T

S - SEP 1997 - S

T - OCT 1996 - R

V - NOV 1995 - M

Z - DEC 1994 - L

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

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

Product Color

CC = Bisque WW = White

BB = Black AA = Almond

SS = Stainless Steel

Indicator for Engineering and

Product Service Only

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.

Model Year Designator

Glass Color

C = Bisque W = White

B = Black A = Almond

S = Stainless Steel

Model ZEK938

Model/Serial

Number

– 5 –

Warranty

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

Warrantor: General Electric Company. Louisville, KY 40225

.

– 6 –

Control Panel Features

Oven Controls

Models ZEK938, ZEK958, ZET938, and ZET958

f

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.)

Throughout this manual, features and appearance may vary from your model.

– 7 –

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.

.

– 8 –

Oven Controls

Models JT912 and JT952

Throughout this manual, features and appearance may vary from your model.

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.

.

– 9 –

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).

Microwave Oven Controls

Models JKP86 and JTP86

Throughout this manual, features and appearance may vary from your model.

– 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 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 5pads, 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.

– 11 –

Lower Oven Controls

Models JKP86 and JTP86

Throughout this manual, features and appearance may vary from your model.

– 12 –

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.

.

– 13 –

Oven Controls

Model JKS06

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.

Throughout this manual, features and appearance may vary from your model.

.

– 14 –

Microwave Oven Controls

Model JT965

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.

Throughout this manual, features and appearance may vary from your model.

– 15 –

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

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, 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

.

– 16 –

Oven Controls

Models JKP20, JTP20, JKP28, JTP28, JKP48,

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 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.

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

Throughout this manual, features and appearance may vary from your model.

– 17 –

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.

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:

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.

Hinge lock (unlocked position)

Slot

Hinge arm

he

f the

o the

f the

Hinge arm

Indentation

Bottom

edge

of slot

Locked position

Sealed hinge arm

3 Screws

2 Screws

– 18 –

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.

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. 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.

2 Screws

Window

Pack and

Gasket

6 Screws

4 Screws

3 Screws

– 19 –

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, press-

ing 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.

6"

Door panel

Gasket

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 compo-

nents, and exhaust it through the louvers below the

control panel.

The fan turns ON when the START pad is de-

pressed after selecting a cook mode. It turns OFF

when the CLEAR/OFF pad is depressed or when

the COOK TIME has ended.

2 Screws

3 Screws

– 20 –

Electronic Oven Control System

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 Con-

trol 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.

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 connect-

ing power to the control and heating units.

Models ZEK938, ZET938, JK915, JT915, JCK915,

JCT915, and JT912

Models JKP20, JCKP20, JKS06, and JCKS06

Models JPT20 and JKP28

Models JKP48, and JTP48

g

Models ZEK958, ZET958, JK955, JT953, and JT955

L1

BROIL

N

BAKE

1 P102 14

SENSR1

COMMON

LOCK

UNLOCK

LAMP

MOTOR1 MOTOR2 SENSR2

Models JT965 and JTP86

py

BAKE

RIBBON

CONNECTOR

1

CONVECTION

(If equipped)

BROIL

CN-02 2

L1

-N-

MDL CFAN LAMP

LATCH

MOTOR CONV

FAN

(If equipped)

OVEN

LAMP N

OVEN

SENSOR

COMMON

LOCKED

UNLOCKED

MEAT

PROBE

CN-O1 1

Model JKP86 Models ZEK958, ZET958,

JK955, JT952, and JT955

Daughter Board

– 21 –

Control Voltage

Models ZEK938, ZET938, JK915, JT915, JCK915,

JCT915, and JT912

Models ZEK958, ZET958, JK955, JT953, and JT955

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.

TERMINALS

L1-N

COM TO N

L1-L2

L1-BA, L1-BR,

L1-CV

*LIGHT-L1

COM TO MDL

**L1-CF

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 VOLTAGE

120 VAC ALL THE TIME

240 VOLTS when oven is calling

for heat (BAKE and BROIL relay

contacts closed).

DLB TO BAKE

DLB TO BROIL

120 VAC when light is off.

120 VAC locking or unlocking.

AUX1–N

*OVL1–OVL2

Models JKP48 and JTP48

Model JKP28

L1A & B -N

AUX1

DLB TO BAKE

DLB TO BROIL

*OVL2–L1

AUX2–N

TERMINALS VOLTAGE

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.

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

TERMINALS

L1 TO N VOLTAGE

120 VAC ALL THE TIME

240 VOLTS when oven is not calling for heat

(BAKE and BROIL relay contacts open).

L1 TO BAKE

L1 TO BROIL

120 VAC when light is on.

120 VAC not locking or unlocking, door closed.

*LAMP-L1

MOTOR 1-MOTOR 2

Models ZEK958, ZET958, JK955, JT953, and JT955

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.

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

TERMINALS VOLTAGE

*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.

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. ,

& 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.

120 VOLTS when cooling fan is

not running, 0 VOLTS when

cooling fan is running.

L1 - to CON J6 Term 6

L1 & B - N

L1-N

AUX1

DLB TO BAKE

DLB TO BROIL

J4 5 to 7

AUX2 - N

TERMINALS VOLTAGE

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.

Model JKP28

– 22 –

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.

Ribbon Cable Connections

– 23 –

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 Ohmme-

ter 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.

Set the ohmmeter on the scale that reads approxi-

mately 500 Ω. Connect leads to the ribbon cable

as indicated in the chart for each function. De-

press 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.

Models JT912 Model JKP28 and JTP28

Models JKP20, JCKP20, and JTP20

Models JKS06 and JCKS06

Model JKP48 and JTP48

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: Replacement touch pads come as

part of the control panel assembly.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

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

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

Up Hour

Dn Hour

UP Min

Dn Min

7 to 13

7 to 14

8 to 13

8 to 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 ro 13

10 to 14

10 to 13

3 to 4

9 to 14

1 to 2

6 to 13

6 to 14

NOTE: Replacement t

come as part of the Con

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

10 to 14

10 to 13

3 to 4

1 to 2

6 to 13

6 to 14

Up Hour

Dn Hour

UP Min

Dn Min

7 to 13

7 to 14

8 to 13

8 to 14

to

to

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

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

2 to 12

GLASS TOUCH MODELS

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

----------

----------

----------

----------

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

– 24 –

Ohmmeter Test continued

Model JKP86

Models JT965 and JTP86

Model JT952

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

NOTE: Replacement touch pads come as

part of the Control panel.

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

Start

1

2

3

4

5

6

7

8

9

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

NOTE: Conductors are

on either side but not

on both.

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

Digit pad type only

7–5

2–14

without

pressing

the

pad

,

the

key

panel

is

bad

.

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

UPPER OVEN

CONDUCTOR

LOWER OVEN

CONDUCTOR

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

NOTE: Replacement touch pads come as part of

the control panel.

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.

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

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

– 25 –

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 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:

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.

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.”

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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– 26 –

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

CODE

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.

F2 •Welded relay contacts

•Airflow to rear of unit

•High resistance in oven sensor leads/connectors

(especially at sensor in rear)

Shorted OFF key

F0

Oven temperature

inside oven cavity as

measured by sensor

over 650°F unlatched

or 915°F latched

F3 Open oven sensor

(over 3000 ohms)

Shorted oven sensor

(under 950 ohms)

F4 •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.

Shorted matrix or START

key

F7 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.

F8

EEPROM data shift failure

If repeated, replace control.

F9 Cooling fan stall or other

cause of open thermal

switches in yellow or blue

latch leads

Suspect cooling fan (between ovens) or airflow.

CORRECTION

MEANING

Sensor Circuit supervisor

failure

F5 Replace Control.

•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.

– 27 –

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

Model JT912

<300 Ω while pressing OFF key.

FAILURE

CODE

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 ohms while pressing OFF key.

F2 •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)

Shorted OFF key

F0

Oven temperature

F3 •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.

Open oven sensor

(Over 2900 ohms)

Shorted oven sensor

(under 950 ohms)

F4 •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.

Shorted matrix or START

key

F7 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.

F8 EEPROM data shift failure If repeated, replace control.

F9 Cooling fan stalls while oven

above 650°F—open thermal

switch in yellow leads

Cooling fan or airflow to control area.

CORRECTION

MEANING

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

Sensor circuit supervisor

failure

F5 Replace control.

switch in yellow or blue latch leads.

FAILURE

CODE MEANING 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 ohms while

pressing OFF key.

-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°F—open thermal switch in yellow

leads

•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)

Shorted OFF key

-F0-

Over temperature

-F3- •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.

Open oven sensor

(over 2900 ohms)

Shorted oven

sensor (under 950

ohms)

-F4- •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.

Shorted matrix or

START key

-F7- 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

yellow leads

Cooling fan or airflow to control area.

-FF- Loss of latch motor safety circuit Replace control.

OFF key. <300 Ω while pressing

2 - 11.

or open short.

yellow or blue leads.

– 28 –

Model JT952

FAILURE

CODE MEANING 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 ohms while

pressing OFF key.

-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°F—open thermal switch in yellow

leads

•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)

Shorted OFF key

-F0-

Over temperature

-F3- •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.

Open oven sensor

(over 2900 ohms)

Shorted oven

sensor (under 950

ohms)

-F4- •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.

Shorted matrix or

START key

-F7- 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

yellow leads

Cooling fan or airflow to control area.

-FF- Loss of latch motor safety circuit Replace control.

OFF key. <300 Ω while pressing

or open short.

yellow or blue leads.

5 - 14.

Models JT965 and JTP86

FAILURE

CODE MEANING 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 ohms while

pressing OFF key.

-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°F—open thermal switch in yellow

leads

•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)

Shorted OFF key

-F0-

Over temperature

-F3- •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.

Open oven sensor

(over 2900 ohms)

Shorted oven

sensor (under 950

ohms)

-F4- •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.

Shorted matrix or

START key

-F7- 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

yellow leads

Cooling fan or airflow to control area.

-FF- Loss of latch motor safety circuit Replace control.

OFF key. <300 Ω while pressing

or open short.

yellow or blue leads.

13-14.

– 29 –

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.

FAILURE

CODE MEANING CORRECTION

-F0-

-F7- Stuck key pad

may mean relay is

turned on.

Determine if problem is with the Key Panel or Control

by:

1. Pushing CLEAR/OFF pad,

-F2- Indicates that oven is over

temperature in one of the

following modes within

either a cooking or clean

mode of operation.

•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.).

•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.

Replace 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.

-F3-

-F4-

-FF- Loss of door motor safety

circuit.

Open or shorted sensor

(circuit). Could be a result

of contamination on

terminals or pinched wire in

sensor circuit, cold solder

joint on control.

Model JKP86

Models JTP48 and JKP48

FAILURE

CODE

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.

F2 •Welded relay contacts

•Airflow to rear of unit

•High resistance in oven sensor leads/

connectors (especially at sensor in rear)

Shorted OFF key

F0

Oven temperature inside oven

cavity as measured by sensor

over 650°F unlatched or 915°F

latched

F3 Open oven sensor

(over 3000 ohms)

Shorted oven sensor

(under 950 ohms)

F4 •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.

Shorted matrix or

START key

F7 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.

F8 EEPROM data shift failure If repeated, replace control.

F9 Cooling fan stalls or other

cause of open thermal

switches in yellow or blue

latch leads

Suspect cooling fan (between ovens) or airflow.

CORRECTION

MEANING

Sensor circuit supervisor

failure

F5 Replace control.

•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.

– 30 –

Oven Sensor and Door Switch

Ohmmeter Test

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.

Models ZEK958, ZET958, JK955, and JT955

Models ZEK938, JCK915, JTP86, JK915 and JT965

Model JKP28, JTP28, JTP20, and JKP28

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.

•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 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 sec-

onds. 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.

•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.

* 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.

CIRCUIT TERMINALS OHMS

Oven Sensor 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

CIRCUIT TERMINALS OHMS

UPPER LOWER

OVEN OVEN

Oven Sensor 6 to 8 3 to 4 *1100Ω@Rm Temp.

Door Unlatched 3 to 5 6 to 8 0Ω

4 to 5 6 to 7 Open

Door Latched 4 to 5 6 to 7 0Ω

3 to 5 6 to 8 Open

CIRCUIT TERMINALS OHMS

Oven Sensor 4 to 6 *1100Ω@Rm Temp.

2562Ω@ 825°F . Clean

Door Unlatched 1 to 3 0 Ω

2 to 3 open

Door Latched 2 to 3 0 Ω

1 to 3 open

J1 4 to 6

J1 1 to 3

J1 2 to 3

J1 2 to 3

J1 1 to 3

– 31 –

CIRCUIT TERMINALS OHMS

Oven Sensor 4 to 6 *1100Ω@Rm Temp.

Sensor and Lock Switch Connectors

LOW TEMP

THERMAL SW.

UNLOCK

LOCK

SW. #1

OVEN SENSOR

1100 @ RM. TEMP

2582 @ CLEAN TEMP

Meat Probe Not On All Models

HIGH TEMP

THERMAL SW.

1

2

3

4

5

6

7

8

BU

O

Y

W

W

OVEN SENSOR

AND LOCK SWITCH

CONNECTOR

MEAT PROBE

30K-50K @m

1

2

3

4

6

SENSOR CONNECTOR

SENSOR

1100 @

ROOM

TEMP.

HIGH TEMP

THERMAL SW.

LOW TEMP

THERMAL SW.

LOCK SW. 1

LOCK SW. 2

OVEN SENSOR

CIRCUIT

PINS 4 & 6

DOOR LATCH OUTPUT

-25 VDC AT ALL TIMES

MEASURED TO GROUND

DOOR LATCH INPUT

DOOR UNLATCHED INPUT

Models JKP28, JKP20, and JKCP20

Models ZET958, JK955, JT952, JT955, JKP48,

JKT48, and JTP48

9

8

7

Blue

Orange

Yel/Blk

Control

Connector

Plug

Lock

SW. 1 Unlock

SW. 2

Sensor

LOW TEMP

THERMAL SW.

HIGH TEMP

THERMAL SW.

Connector at

Unit Rear

Sensor

1000 @RM

2562 @825ûF

Model JKP86

Models ZEK938, ZET938, ZEK958, JTP86,

JCK915, JCT915, JK915, JT915, and JT912

* 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.

Models JTP48

Models JKS06 and JCKS06

Model JKP86

CIRCUIT TERMINALS OHMS

Oven Sensor *1100Ω@Rm Temp.

2562Ω@ 825°F Clean

Door Unlatched

Common-unlock

0Ω

Common-lock Open

Door Latched Common-lock 0Ω

Common-unlock

Open

CIRCUIT TERMINALS OHMS

Oven Sensor 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. #2

UNLOCK

LOCK

SW. #1

OVEN SENSOR

1100 @ RM. TEMP

2562 @ CLEAN TEMP

HIGH TEMP

THERMAL SW.

LOW TEMP

THERMAL SW.

1

2

3

4

5

6

7

8

CONTROL

CONNECTOR

PLUG

MEAT PROBE

30K-50K @ rm

(ON SOME MODELS)

UPPER OVEN SENSOR AND LOCK

SWITCH CONNECTOR

SENSOR

1100 @ RM

2562 @ 825 F

CONTROL

CONNECTOR

PLUG

LOWER OVEN SENSOR AND LOCK

SWITCH CONNECTOR

LOCK

SW

1

LOCK

LOCK

SW

2

UNLOCK

MEAT PROBE

30K-50K @ rm

(ON SOME MODELS)

HIGH TEMP

THERMAL SW.

LOW TEMP

THERMAL SW.

1

2

3

4

5

6

7

8

Models ZET938, JCT915, JT915, and JT912

CIRCUIT TERMINALS OHMS

UPPER LOWER

OVEN OVEN

Oven Sensor 6 to 8 1 to 2 1100Ω @ Rm Temp.*

Door Unlatched 3 to 5 4 to 6 0Ω

4 to 5 4 to 5 Open

Door Latched 4 to 5 4 to 5 0Ω

3 to 5 4 to 6 Open

– 32 –

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

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.

Set Point Table

L1

Normally

Open

SPST

L2

Broil

Heater

Convection

Heater

Bake

Heater

Normally

Closed

SPDT

Normally

Open

SPDT

Normally

Closed

Normally

Open

Normally

Open

SPST

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

JK955

Models JKP28, JTP28, JKP20, JCKP20, JTP20,

JKP48, and JTP48

– 33 –

BAKE-2

BAKE

"L-1"

BROIL-2

L1-2

BROIL

"L-2"

"L-1"

L1-2 BROIL-2

BROIL

"L-2"

2700 W/21

3600 W/15.5

BAKE/TIME BAKE/CLEAN

BROIL & CLEAN

3600 W/15.5

14.2A

16.6A

14.2A

16.6A

16.6A

L2

L1

2500W

22

CONVECTION BAKE

L2

L1

N

BROIL

3600W

16

CONVECTION ROAST

240V.

15.8

NC NC NO

BROIL BAKE CONV

BAKE

RY9

CAPACITOR

CW

CCW

CONV

FAN

DOOR

SW

DLB

DLB

DOOR

SW

M

N

RY9

CAPACITOR

CW

CCW

CONV

FAN

M

L1-1 BR-1

Oven Calibration

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 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

+/- 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

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.

Model JT965

BAKE-2

BAKE

"L-1"

BROIL-2

L1-2

BROIL

"L-2"

"L-1"

L1-2 BROIL-2

BROIL

"L-2"

2700 W/21

3600 W/15.5

BAKE/TIME BAKE/CLEAN

BROIL & CLEAN

3600 W/15.5

14.2A

16.6A

14.2A

16.6A

16.6A

DLB

DLB

Models JKP86 and JTP86

– 34 –

Motorized Door Lock

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.)

Top Oven

Motorized

Door Lock

2 Screws

Lower Oven

2 Screws

Lower Oven

2 Screws

Monogram Lower Oven

L

LOCK RELAY

C MDL

LOCK

MOTOR DOOR

SWITCH

N

NC

C

NO

ALL OTHER MODES WITH DOOR CLOSED

L

LOCK RELAY

C MDL

LOCK

MOTOR DOOR

SWITCH

N

NC

C

NO

DOOR LOCKING OR UNLOCKING

5

4

3

DOOR LATCH OUTPUT PIN -25VDC

AT ALL TIMES MEASURED TO GROUND

DOOR UNLATCHED INPUT PIN

SENSOR AND LOCK

SWITCH CONNECTORS

LOCK

UNLOCK

LOCK SW. CIRCUIT

6

8

LOCKED

LOW TEMP

THERMAL SW.

HIGH TEMP

THERMAL SW.

5

4

3

DOOR LATCH OUTPUT PIN -25VDC

AT ALL TIMES MEASURED TO GROUND

DOOR UNLATCHED INPUT PIN

SENSOR AND LOCK

SWITCH CONNECTORS

LOCK

UNLOCK

LOCK SW. CIRCUIT

6

8

UNLOCKED

LOW TEMP

THERMAL SW.

HIGH TEMP

THERMAL SW.

Lock Motor

Lock

Switch

Unlock

Switch

Lock

Hook

*

*

*CN-01-4 used on JT965 and JTP86

Note: The display of the Control will flash LOCK if

the door switch is in the C (common) to NC

Models, Single Oven Relay

JKP20, JKP28, JCKP20,JTP20, JTP28, K1

JTP86, and JT965

JK915, JCK915, JT912, JT915, JCT915, RY1

ZEK938, and ZET938

Relay

Models, Double Oven Upper Lower

JK955, JT952, JT955, ZEK958, K7 K8

and ZET958

JKP48 AND JTP48 K500 K501

(normally closed) position (Door open). Closing

the door completes the circuit through the door

– 35 –

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.

Lock Thermal Switch

The thermal switches are located in the compo-

nent 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 (lo-

cated 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 opera-

tion, 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.

Thermal

Cutout

Switch

Note: Oven must be removed from installation for

access to the thermal cutout switch.

Lower Oven

Door Lock

Thermal Switch

Door Lock

Thermal

Switch

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

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 un-

locked, both lock switches will be in the open

position.

– 36 –

Convection Bake Element and

Fan Assembly

For more even baking, the new convection fan

rotates in both directions depending on mode (see

table).

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.

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 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 Voltage

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

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.

Troubleshooting:

SCREWS

SCREWS

(4)

(4)

FAN

FAN

BLADE

BLADE

NUT

NUT

OVEN

OVEN

LINER

LINER

OVEN

OVEN

INSULATION

INSULATION

OUTER

OUTER

BACK

BACK

PANEL

PANEL

CONV.

CONV.

FAN

FAN

MTG.

MTG.

SCREWS

SCREWS

(3)

(3)

CONV.

CONV.

FAN

FAN

COLLAR

COLLAR

MTG.

MTG.

SHAFT

SHAFT

MOUNTING

MOUNTING

SCREWS

SCREWS

(3)

(3)

FAN

FAN

BLADE

BLADE

Convection fan not running.

Make the following checks:

Point 3

(BLUE)

Point 1

(RED) 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.

noitcevnoC edoM esiwkcolC-retnuoC emiTnoitatoR neewteBemiTtseR snoitceriD esiwkcolC emiTnoitatoR

noitcevnoC tsaoR YLNO esiwkcolC-retnuoC ENONENON

noitcevnoC kcaR-itluM sdnoceS04sdnoceS01sdnoceS02

noitcevnoC kcaRelgniS ssetuniM3sdnoceS01setuniM3

foorPetuniM1setuniM01etuniM1

– 37 –

Models JCK915, JK915, and ZEK938 Schematic

Schematics and Wiring Diagrams

– 38 –

Models JT952, JT955, and ZET958 Schematic

– 39 –

Models JK955 and ZEK958 Schematic

– 40 –

Model JTP20 Schematic

– 41 –

Models JT912, JTC915, JT915, and ZET938 Schematic

– 42 –

Models JCKP20, and JKP20 Schematic

– 43 –

Models JCKS06 and JKS06 Schematic

– 44 –

Model JTP28 Schematic

– 45 –

Model JKP28 Schematic

– 46 –

Models JKP48 and JTP48 Schematic

– 47 –

Model JT965 Schematic

– 48 –

Model JTP86 Schematic

– 49 –

2295152P001

Model JKP86 Schematic