Monogram ZGU384L How to use

GE Appliances
General Electric Company
Louisville, Kentucky 40225
31-9144
30- and 36-in.
Monogram
Stainless Steel
Gas Cooktops
ZGU384L
ZGU384N
ZGU385L
ZGU385N
Technical Service Guide
October 2006
GE Consumer & Industrial

– 2 –
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
If the information in this manual is not followed exactly, fire or explosion may
result causing property damage, personal injury or death. If you smell gas:
– Do not try to light any appliance.
– Do not touch any electrical switch; do not use any phone in the
building.
– Immediately call the gas supplier from a neighbor’s phone. Follow the
gas supplier’s instructions.
– If you cannot reach the gas supplier, call the fire department.
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 & Industrial
Technical Service Guide
Copyright © 2006
All rights reserved. This service guide may not be reproduced in whole or in part in any
form without written permission from the General Electric Company.

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Table of Contents
Burners ..................................................................................................................................................................................21
Burner Base .........................................................................................................................................................................16
Burner Valves ......................................................................................................................................................................20
Care and Cleaning ............................................................................................................................................................11
Component Locator Views ...........................................................................................................................................14
Cooktop Components ..................................................................................................................................................... 16
Features ................................................................................................................................................................................ 9
Gas Type Conversion .....................................................................................................................................................25
High Altitude Conversion ............................................................................................................................................... 28
Ignitor ..................................................................................................................................................................................... 17
Ignitor and Light Switch Assembly ...........................................................................................................................19
Ignitor Switch Test ............................................................................................................................................................ 30
Indicator Light Switch Test ........................................................................................................................................... 30
Indicator Light Assembly ............................................................................................................................................. 18
Installation ........................................................................................................................................................................... 5
Introduction ......................................................................................................................................................................... 4
Maintop ................................................................................................................................................................................ 17
Manifold ................................................................................................................................................................................ 23
Nomenclature .................................................................................................................................................................... 8
Schematics and Wiring Diagrams ............................................................................................................................31
Spark Module ......................................................................................................................................................................22
Transformer ......................................................................................................................................................................... 23
Transformer Check ..........................................................................................................................................................30
Troubleshooting ............................................................................................................................................................... 29
Warranty .............................................................................................................................................................................. 35

– 4 –
Introduction
The GE Monogram 30- and 36-in. Stainless Steel Gas Cooktops have the following features:
Stainless steel cooktop surface
Continuous interlocking porcelainized cast-iron grates
Stainless steel tactile grip control knobs with "burner on" indicator lights
Dual flame sealed cooktop burners with 140°F simmer selection
Electronic pilotless ignition
Automatic re-ignition
Factory set fuel type with conversion kit included
•
•
•
•
•
•
•

– 5 –
Installation
Note: The complete installation instructions are
inclosed with the Use and Care Manual. Carefully
read and follow these instructions.
WARNING: Before beginning the installation,
switch power off at the service panel and lock the
service disconnecting means. When the service
disconnecting means cannot be locked, securely
fasten a warning tag to the service panel.
DIMENSIONS AND CLEARANCES
1. Overall cooktop dimensions:
2. Use a 30″or wider base cabinet.
• Cut the opening in the countertop. To ensure
accuracy, it is best to make a template for the
opening. Make sure the sides of the opening are
parallel and the rear and front cuts are exactly
perpendicular to the sides.
• Observe all minimum clearances.
3. Make sure the wall coverings, countertop and
cabinets around the cooktop can withstand heat
(up to 200°F) generated by the cooktop.
3-1/2″
30-3/4″
21-15/16″
deep at
center
12″min.
from cutout
to side wall
2-1/2″min.
from cutout
to front of
countertop
2-7/8″min.
from cutout
to rear vertical
combustibles
12″min.
from cutout
to side wall
28-1/2″
30″or wider
cabinet base
recommended
19-5/8″
30″min.
13″max.
30″
min. 18″min.
(Continued next page)
Model ZGU384

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DIMENSIONS AND CLEARANCES
1. Overall cooktop dimensions:
2. Use a 36″or wider base cabinet.
• Cut the opening in the countertop. To ensure
accuracy, it is best to make a template for the
opening. Make sure the sides of the opening are
parallel and the rear and front cuts are exactly
perpendicular to the sides.
• Observe all minimum clearances.
3. Make sure the wall coverings, countertop and
cabinets around the cooktop can withstand heat
(up to 200°F) generated by the cooktop.
3-1/2″
36-3/4″
21-3/16″
deep at
center
12″min.
from cutout
to side wall
2-1/2″min.
from cutout
to front of
countertop
3-3/8″min.
from cutout
to rear vertical
combustibles
12″min.
from cutout
to side wall
33-7/8″
36″or wider
cabinet base
recommended
19-1/8″
30″min.
13″max.
36″
min. 18″min.
(Continued next page)
Model ZGU385

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INCOMING
GAS TYPE PRESSURE TO PRESSURE REGULATOR
REGULATOR OUTPUT SUPPLIES
Natural 6.0″to 14.0″W.C.P. 5.0″W.C.P.
L.P. 11″to 14″W.C.P. 10.0″W.C.P.
GAS SUPPLY REQUIREMENTS
Pressure
regulator
Shut-off
valve
Electrical outlet 12″
below countertop
To cooktop
Rear view
of regulator
(note
direction
of arrow)
Gas Supply
Cooktops are shipped from the factory set for
either natural or LP gas, and are reversible with the
included required parts. For operation above 5,000
feet, order Conversion Kit (Part # WB28T10185).
Gas Supply Shutoff Valve
The cooktop itself is not equipped with a gas shut-
off valve. If installed correctly, a shutoff valve will
be in the main gas supply line “upstream” of the
appliance pressure regulator.
Measuring the Gas Pressure Supplied to the
Burners
A pressure tap hole is located on the side of
the regulator to allow checking of the manifold
pressure. Remove the regulator plug and install a
WB02X10820 tap (or 1/8 in. NPT nipple) for test with
a manometer. Turn on the gas and light at least one
burner to serve as a load. Reinstall the regular plug
and check for leaks.
1”
min.
12”
Gas
supply
line
Electric Supply
This cooktop features pilotless electronic ignition
for energy savings and reliability. It operates on a
120 volt, 60 Hz power supply. A separate circuit,
protected by a 15 amp time delay fuse or circuit
breaker, is required. A properly-grounded 3-prong
receptacle should be located within reach of the
cooktop’s four-foot power cord.
Gas and Power Supply Locations
Make gas connection through rear wall, or on
cabinet floor at rear, as illustrated.
Install the house gas supply at least 1-in. from
the back wall.
Locate the electrical outlet 12-in. below the
countertop.
•
•
•
Optional Combination Installations
This cooktop may be installed in combination with a
ZVB30 Monogram Downdraft Vent, a ZET1, ZEK938
or ZET938 Single Oven or a ZTD910 or ZKD910
Warming Drawer. The gas and electrical supply
must be located where it will not interfere with vent
housing, the oven or the warming drawer. Review
Installation Instructions for additional installation
requirements.

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Model Designator
Designates features – the higher
the number, the more features.
Z G U 3 8 5 N S M I S S
Brand
Z = Monogram
Gas
Exterior Color
SS = Stainless Steel
Model Year Designator
Indicator for Engineering
and Product Service only
Model Number
The nomenclature plate is located on the
bottom of the burner box. In addition to the
model and serial numbers, it contains the
ratings of the burners, the type of fuel, and the
pressure the cooktop was adjusted for when
it left the factory. Also included are minimum
wall clearance requirements.
The mini-manual is located under the control
panel.
Nomenclature
Serial Number
The first two characters of the serial number
identify the month and year of manufacture.
Example: AL123456S = January, 2006
A - JAN 2006 - L
D - FEB 2005 - H
F - MAR 2004 - G
G - APR 2003 - F
H - MAY 2002 - D
L - JUN 2001 - A
M - JUL 2000 - Z
R - AUG 1999 - V
S - SEP 1998 - T
T - OCT 1997 - S
V - NOV 1996 - R
Z - DEC 1995 - M
Configuration
U = Cooktop
Fuel
N = Natural gas
L = Liquid propane
Ignition System
Orifice/Jet DMS
Natural Gas LP Gas
LPG @ 10" WCP Rear Large Center Large Front
Rate, HI 9.1K 15K 15K
Rate, LOW 2.4K 2.4K 2.4K
Rate, SIM 1.1K 1.2K 1.2K
Main Orifice 0.84mm 1.08 mm 1.08 mm
Sim. Orifice 0.31mm 0.34mm 0.34mm
Main Orifice # 84XL
Front
9.1K
2.4K
1.1K
0.84mm
0.31mm
84XL 108XL 108XL
31SL 31SL 34SL 34SL
Sim. Orifice #
Natural @ 5" WCP Rear Large Center Large Front
Rate, HI 10K 18K 18K
Rate, LOW 2.4K 2.4K 2.4K
Rate, SIM 1.1K 1.2K 1.2K
Main Orifice 1.38mm 1.9 mm 1.9mm
Sim. Orifice 0.51 mm 0.51 mm 0.51 mm
Main Orifice # 138XN
Front
12K
2.4K
1.1K
1.48 mm
0.51 mm
148XN 190XN 190XN
51SN 51SN 51SN 51SN
Sim. Orifice #
The letter designating
the year repeats every
12 years.
Example:
T - 1974
T - 1986
T - 1998

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Features
Features
(Throughout this
manual, features and
appearance may
vary.)
1 Dual-Flame Spillproof Burners—HighOutput
2 Dual-Flame Spillproof Burners—X-HighOutput
3 Tactile-touch Control Knobs (One For Each Surface Burner)
4 Burner “ON” Indicator Lights (One On Each Control Knob)
5 Burner Grates
1
2
1
4
5
3
1
ZGU384 – 30"�Gas Cooktop
Features
(Throughout this
manual, features and
appearance may
vary.)
1 Dual-Flame Spillproof Burners—HighOutput
2 Dual-Flame Spillproof Burners—X-HighOutput
3 Tactile-touch Control Knobs (One For Each Surface Burner)
4 Burner “ON” Indicator Lights (One On Each Control Knob)
5 Burner Grates
1
1
1
5
1
2
43
ZGU385 – 36� Gas Cooktop
ZGU384L and ZGU384N
ZGU385L and ZGU385N
(Continued next page)

– 10 –
Push the control knob down and turn it
counterclockwise to the desired position from
HI to LO or simmer (SIM).
After the burner ignites, turn the knob in either
direction to adjust the flame size.
To turn a burner off, turn the knob clockwise,
as far as it will go, to the OFF position.
•All of the burners can be used for both general
cooking and simmering.
•The X-High setting is intended for use with 10″
or larger cookware.
•Do not operate a burner for an extended
period of time without cookware on the grate.
The finish on the grate may chip without
cookware to absorb the heat.
•Be sure the burners and grates are cool before
you place your hand, a pot holder, cleaning
cloth or other materials on them.
•The indicator light on each knob verifies the
burner is “ON”; however, it should not be a
substitute for visually checking the flame
at the burner.
•Be sure you turn the control knob to “OFF”
when cooking is complete.
Electronic
ignition &
relight
The surface burners are lit by electronic ignition.
All burner igniters make clicking sounds and
spark even when only a single burner is being
turned on. Do not touch any of the burners when
the igniters are clicking.
The burners on this cooktop relight
automatically if the flame goes out. This helps
prevent the inconvenience of having to manually
relight a burner.
Occasionally, the burners may spark if excess
wind or draft blows the flame away from the
burner’s flame sensor.
In case of a power outage, you can light the
surface burners on your cooktop with a match.
Hold a lighted match to the burner; then turn the
knob to the HIGH position. Use extreme caution
when lighting burners this way.
To light
a burner
How to
select
flame size
Watch the flame, not the knob, as you
reduce heat.
The flame size on a gas burner should match the
cookware you are using.
FOR SAFE HANDLING OF COOKWARE, NEVER
LET THE FLAME EXTEND UP THE SIDES OF THE
COOKWARE. Any flame larger than the bottom of
the cookware is wasted and only serves to heat
the handle.
NOTE: The X-High setting produces an extra
large flame. Use 10″or larger diameter
cookware when using high heat settings.
(Continued next page)
Cookware
Aluminum: Medium-weight cookware is
recommended because it heats quickly and
evenly. Most foods brown evenly in aluminum
cookware. Use saucepans with tight-fitting lids
for cooking with minimum amounts of water.
Cast Iron: If heated slowly, most cookware will
give satisfactory results.
Enamelware: Under some conditions, the
enamel of some cookware may melt. Follow
cookware manufacturer’s recommendations
for cooking methods.
Glass: There are two types of glass cookware—
those for oven use only and those for surface
cooking (saucepans, coffee and teapots). Glass
conducts heat very slowly.
Heatproof Glass-Ceramic: Can be used for
either surface or oven cooking. It conducts
heat very slowly and cools very slowly. Check
cookware manufacturer’s directions to be sure
it can be used on gas cooktops.
Stainless Steel: This metal alone has poor
heating properties, and is usually combined with
copper, aluminum or other metals for improved
heat distribution. Combination metal cookware
generally works satisfactorily if it is used at
medium heat as the manufacturer recommends.
Dual-flame
spill-proof
burners
All burners on your cooktop have two rows of
flames. These dual-flame burners have a simmer
(lower) flame and a main (upper) flame.
When a burner is turned on, the simmer flame
will always light and stay on.
Simmering: The simmer (SIM) setting will use
only the lower flames. Use simmer (SIM) to melt
chocolate, hold delicate sauces or for other
foods requiring low simmer heat.
Primary Cooking: Settings from LO to HI will use
both rows of flames. Use LO to HI for all purpose
cooking. Main Flame
Simmer Flame
Simmer Flame

– 11 –
Cookware
Aluminum: Medium-weight cookware is
recommended because it heats quickly and
evenly. Most foods brown evenly in aluminum
cookware. Use saucepans with tight-fitting lids
for cooking with minimum amounts of water.
Cast Iron: If heated slowly, most cookware will
give satisfactory results.
Enamelware: Under some conditions, the
enamel of some cookware may melt. Follow
cookware manufacturer’s recommendations
for cooking methods.
Glass: There are two types of glass cookware—
those for oven use only and those for surface
cooking (saucepans, coffee and teapots). Glass
conducts heat very slowly.
Heatproof Glass-Ceramic: Can be used for
either surface or oven cooking. It conducts
heat very slowly and cools very slowly. Check
cookware manufacturer’s directions to be sure
it can be used on gas cooktops.
Stainless Steel: This metal alone has poor
heating properties, and is usually combined with
copper, aluminum or other metals for improved
heat distribution. Combination metal cookware
generally works satisfactorily if it is used at
medium heat as the manufacturer recommends.
Dual-flame
spill-proof
burners
All burners on your cooktop have two rows of
flames. These dual-flame burners have a simmer
(lower) flame and a main (upper) flame.
When a burner is turned on, the simmer flame
will always light and stay on.
Simmering: The simmer (SIM) setting will use
only the lower flames. Use simmer (SIM) to melt
chocolate, hold delicate sauces or for other
foods requiring low simmer heat.
Primary Cooking: Settings from LO to HI will use
both rows of flames. Use LO to HI for all purpose
cooking. Main Flame
Simmer Flame
Simmer Flame
General
information
Proper care and cleaning are important
so your cooktop will give you efficient and
satisfactory service. Follow these directions
carefully in caring for it.
Some cooktop models are provided with
cleaners. Follow the instructions on the
containers.
Before cleaning any part of your cooktop,
be sure all burners are off and cool.
Control
knobs
The control knobs may be removed for cleaning.
To remove knob, pull it straight up.
The knobs have a tactile grip surface, but no
special cleaning is required.
Wash the knobs in soap and water but do not
soak. Avoid getting water down into the knob
stem holes.
Replace the knobs after drying.
DO NOT attempt to clean your knobs in a
dishwasher.
NOTE: The knob stem is “D” shaped. Replace
the flat side of the knob onto the flat side of
the stem.
Do not use a steel wool pad; it will scratch
the surface.
To clean the stainless steel surface, use
warm sudsy water, a stainless steel cleaner
or an all-purpose liquid or spray cleaner.
Always scrub in the direction of the grain.
Rinse thoroughly with a sponge or cloth and
clean water. Dry with a soft, clean cloth.
After cleaning, use a stainless steel polish, such
as Stainless Steel Magic®, Revere Copper and
Stainless Steel Cleaner®or Wenol All Purpose
Metal Polish®. Follow the product instructions
for cleaning the stainless steel surface.
Use a stainless steel brightener when stainless
steel is exposed to high heat and has a yellow
appearance. Stainless steel cleaner is for other
cleaning. Follow the product instructions for
proper cleaning methods. If you need an
additional supply, you can purchase
them by calling 800.626.2002.
Stainless
steel
surfaces
Care and Cleaning
(Continued next page)

– 12 –
Cast-iron burner grates should be washed
regularly and especially after spillovers. Wash
them in hot, soapy water and rinse with clean
water. Dry grates with a clean cloth. The grates
may also be cleaned in a dishwasher.
When replacing grates, be sure that they are
positioned securely over the burners.
Model ZGU384: Replace the two side grates so
that a continuous “arc” is formed with the center
ribs of both grates. Make sure both grates are
stable and level.
Model ZGU385: Replace the two side grates with
their locking rails toward the center grate so that
a continuous “arc” is formed with the center ribs
of all three grates. Make sure the center grate is
locked into position over the rails on the side
grates and that all grates are stable and level.
To get rid of burned-on food, place the grates in
a covered container or plastic bag. Add 1/4 cup
of ammonia and let them soak for 30 minutes.
Wash, rinse well and dry.
Although they are durable, the grates will
gradually lose their shine, regardless of the
best care you can give them. This is due to their
continual exposure to high temperatures.
Do not operate a burner for an extended
period of time without cookware on the grate.
The finish on the grate may chip without
cookware to absorb the heat.
Rubber Grate Feet
For stability, the base of your grates has
rubber feet. If any of these feet should become
damaged or lost, replace them immediately.
To order replacement rubber grate feet, please
call our toll-free number:
National Parts Center . . . . . . . . . . .800.626.2002
Rubber Grate Feet Part No. . . . . .#WB02T10101
Burner grates
Arc
Arc Locking
Rails
Arc Arc
(Continued next page)
Dual-flame
spill-proof
burners
The burner consists of three parts: the burner
base, burner head and burner cap. The burner
head and burner cap can be lifted off, making
them easy to clean.
CAUTION: DO NOT OPERATE THE BURNER
WITHOUT ALL BURNER PARTS IN PLACE.
You should clean the surface burners routinely,
especially after bad spillovers, which could clog
the slots and holes in the burner heads. A sewing
needle or wire twist-tie works well to unclog
these openings.
All slots and holes in the burner head must be
kept clean at all times for proper ignition and
an uneven, unhampered flame.
Cleaning
Lift off burner parts only when cool (see next
page). Wash in hot, soapy water. You may use a
plastic scouring pad to remove burned-on food
particles.
To remove burned-on food, soak the burner
heads in a solution of mild liquid detergent and
hot water for 20–30 minutes. For more stubborn
stains, use a plastic scouring pad or toothbrush.
If the spill goes inside the burner head assembly,
wash it under running water and shake to
remove excess water.
After Cleaning
Before replacing the burner parts, shake out
excess water and then dry them thoroughly.
The electrode is located
on one side of each burner.
When one burner is “ON”,
all burners will spark.Do
not attempt to disassemble
or clean around any burner while another
burner is on. An electric shock may result,
which could cause you to knock over hot
cookware.
Electrode

– 13 –
Dual-flame
spill-proof
burners (cont.)
To remove the burner parts:
1. Turn all controls OFF before removing any
burner parts.
2. When cool, you may lift off the burner grates,
burner caps and burner heads for easier
cleaning. Do not remove the burner bases.
To replace the burner parts:
Make sure that the burner parts are replaced in
the correct location.
On model ZGU384, there is one large burner
head and burner cap and three sets of medium
burner heads and burner caps.
On model ZGU385, there is one large burner
head and burner cap and four sets of medium
burner heads and burner caps.
These burner parts are not interchangeable.
1. Replace the burner head on top of the burner
base, making sure that the hole in the burner
head is properly aligned with the electrode in
the burner base. A small gap between the
base and head is normal.
2. Place the burner cap on top of the burner
head. Make sure that the burner cap is
properly seated on the burner head.
Medium
Burner
Large
Burner
Medium
Burner
Medium
Burner
Medium
Burner
Medium
Burner
Medium
Burner
Medium
Burner
Burner head
Burner
base
Electrode
Burner cap
Burner cap not properly seated
Burner cap properly seated
NOTE: Before removing the burner parts,
remember their size and location. Replace
them in the same location after cleaning
for proper burner operation.
Large
Burner
Burner Assembly
Burner Cap Alignment
Electronic
ignition
& relight
electrodes
The electrode of the electronic ignition system is
positioned above the surface of the burner base.
When cleaning the cooktop, be careful not to
snag the igniter with your cleaning cloth.
Damage to the igniter could occur.
Be careful not to push in a control knob while
cleaning. It could cause the igniter to spark.
Make sure that the white ceramic igniters on
the cooktop are dry and clean. Clean the metal
portion of the electrode with a soft cloth.
Cooktop Electrode
NOTE: Do not attempt to remove the
electrode from the cooktop.
Clean this metal part
Do not clean this
white ceramic part
with an emery board

– 14 –
Component Locator Views
Model ZGU384
Burner Cap
Burner Head
Maintop
Burner Box
Model ZGU384 (maintop and top heat barrier removed)
Spark Module
Transformer
Burner
Burner
Burner Burner
Indicator Light Assembly
(Continued next page)
Manifold
Ignitor
Burner Valve (1 of 4)
Ignitor and Light Switch (1 of 4)

– 15 –
Model ZGU385
Model ZGU385 (maintop and top heat barrier removed)
Spark Module
Transformer
Indicator Light Assembly
Burner
Burner
Burner
Burner
Burner
Burner Cap
Burner Head
Maintop
Burner Box
Manifold
Ignitor
Burner Valve (1 of 5)
Ignitor and Light Switch (1 of 5)

– 16 –
Cooktop Components
Caution: When removing the wire from the igniter,
make sure you do not damage the heat shrink
insulation on the wire. If damaged, repair the wire
insulation with fiberglass tape.
Lift each burner base, note the color of the
ignitor wire, then disconnect the ignitor wire.
3.
Burner Base
Note: The following describes the procedure to
remove a single burner base. The procedure to
remove the remaining burner bases is identical.
To remove the burner base:
Lift off the burner grates, cap, and burner head.
Note: The 3 T-15 Torx screws in the maintop do not
tighten to the maintop surface. They are inserted
in the burner base to assist in alignment of burner
base to maintop.
Remove the three T-15 Torx screws from the
maintop and the two T-15 Torx screws that
attach the burner base to the maintop.
1.
2.
WARNING: Disconnect electrical power to the
cooktop and turn OFF gas at the main valve before
performing any removal procedures.
Note:
The cooktop itself is not equipped with a gas
shutoff valve. If installed correctly, a shutoff
valve will be in the main gas supply line
“upstream” of the appliance pressure regulator.
Components described are for model ZGU385.
Components for model ZGU384 are similar,
except where noted.
•
•
Ignitor Wire
Note: When assembling, check the integrity of
the heat shrink on the igniter leads going to the
electrodes. If damaged, proper ignition may not
occur. Repair the wire insulation with fiberglass tape
(part # WB06X10551).

– 17 –
Maintop
Note: Maintop removal is required to access:
Indicator light assembly
Ignitor and light switch assembly
Burner valves
Burners
Spark module
Transformer
Manifold
Gas piping
Wiring
Mini-manual
Note: The cooktop does not need to be removed
from the countertop.
To remove the maintop:
Remove the valve knobs.
Remove each burner base. (See Burner Base.)
Lift the maintop from the burner box.
•
•
•
•
•
•
•
•
•
•
1.
2.
3.
Ignitor
Note: The following describes the procedure to
remove a single ignitor. The procedure to remove
the remaining ignitors is identical.
To remove the ignitor:
Remove the burner base. (See Burner Base.)
Use a small needle-nose pliers and remove the
clip and spring from the ignitor.
1.
2.
Pull out the ignitor from the burner base. 3.
Burner Box
Maintop
Top Heat Barrier
Note: For added accessibility of components, after
removing the maintop, it may be helpful to remove
the top heat barrier by lifting it out of the burner
box.
Clip
Spring

– 18 –
Slide the wire guide out of the bracket,
disconnect the wire harness and the strain
relief, and remove the indicator light harness
(part# WB18T10383 for model ZGU384 or part #
WB18T10384 for model # ZGU385).
5.
Note:
When replacing the indicator light harness,
ensure each insulator is placed directly between
each circuit board and the light harness bracket.
The indicator light harness has a numbered
label at each LED. Each label number matches
the number on the metal housing under the
insulator.
•
•
Remove the 2 Phillips-head screws that attach
each circuit board and insulator to the light
harness bracket.
4.
Wire Harness
Wire Guide
Insulator
Indicator Light Assembly
Each burner utilizes an indicator light consisting of
an insulator and circuit board with an attached Light
Emitting Diode (LED). When a burner knob is turned
on, the circuit board activates the LED and light is
directed to the clear shaft of that burner knob. The
light is reflected up to the indicator on top of the knob.
The circuit boards are wired to an indicator light
harness and are replaced as one unit. This light harness
is enclosed in a housing located under the maintop,
above the burner valves, and can be removed as an
indicator light assembly. It is necessary to remove
the indicator light assembly to access the ignitor and
light switch assembly, burner valves, and manifold.
To remove the indicator light assembly:
Remove the maintop. (See Maintop.)
On model ZGU384, remove the top heat barrier
by lifting it out of the burner box.
Remove the two ¼-in. hex-head screws that
attach the indicator light assembly to the
manifold brackets.
Lift the indicator light assembly and disconnect
the wire harness.
1.
2.
3.
4.
Note: It is not necessary to remove the indicator
light assembly from the cooktop to remove the
indicator light harness.
To remove the indicator light harness:
Remove the maintop. (See Maintop.)
On model ZGU384, remove the top heat barrier
by lifting it out of the burner box.
1.
2.
Indicator Light Assembly Wire Harness
Cover
Top Heat Barrier
Remove the two ¼-in. hex-head screws and the
cover from the light harness bracket
3.
Insulator (behind board)

– 19 –
Ignitor and Light Switch Assembly
Each burner utilizes an ignitor switch and a light
switch combined in a single unit. The ignitor and
light switches are all wired to a single harness.
When a burner knob is turned to the ON position,
the ignitor switch closes and activates the spark
module. The light switch also closes and activates
the indicator light assembly. The ignitor and light
switches and harness are replaced as one assembly
(part # WB18T10382 for model # ZGU384 or part #
WB18T10381 for model # ZGU385) .
To remove the ignitor and light switch assembly:
Remove the maintop. (See Maintop.)
On model ZGU384, remove the top heat barrier
by lifting it out of the burner box.
Remove the indicator light assembly. (See
Indicator Light Assembly.)
1.
2.
3.
Disconnect the spark module wire harness.
Disconnect the transformer wire harness and
the ¼-in. hex-head screw that attaches the
transformer ground wire to the burner box.
4.
5.
Note: Before removing the ignitor and light switch
assembly from the burner valves and the burner
box, note the switch and wire locations.
Release the ignitor and light switch assembly
wiring from the wire retainers (if utilized) in the
bottom of the burner box.
Lift each ignitor switch from the burner valve
stem and remove the ignitor and light switch
assembly from the burner box.
6.
7.
Spark Module
Wire Harness
Indicator Light Assembly
Top Heat Barrier
Transformer
Wire Harness
Note:
When replacing the ignitor and light switch
assembly, place the switches onto the valves
with wire colors and harness in original position.
The bottom of each switch is molded to conform
to the top of the valve for a locked-in fit. For
proper ignitor operation, each switch must be
locked-in to the top of the valve. When installing
the ignitor and light switch assembly, align each
switch to the valve stem and body. Push the
switch down firmly until an audible "snap" is
detected.
•
•
Transformer
Wire Harness
Spark Module
Wire Harness
Model ZGU385
Model ZGU384

– 20 –
Remove the four ¼-in. hex-head screws that
attach the valve access plate to the bottom of
the burner box.
7.
Separate the right side of the bottom heat shield
from the burner box and remove the valve
access plate.
8.
Caution: Ensure the valve seal and the screw seal
are in place BEFORE installing the valve.
Valve Access Plate
Bottom Heat Shield
Valve Seal
Screw Seal
Remove the ¼-in. hex-head screw that attaches
the valve to the manifold.
9.
Burner Valves
Note: The following describes the procedure to
remove a single burner valve. The procedure to
remove the remaining valves is identical.
To remove the burner valve on model ZGU385:
Remove the maintop. (See Maintop.)
Remove the indicator light assembly. (See
Indicator Light Assembly.)
Lift the ignitor switch from the burner valve
stem. (See Ignitor and Light Switch Assembly.)
Remove the
9
/
16-in. nut and separate the Hi-Lo
gas tube from the burner valve.
Remove the
7
/
16-in. nut and separate the Simmer
gas tube from the burner valve.
1.
2.
3.
4.
5.
Remove the two ¼-in. hex-head screws that
attach the right side of the bottom heat shield to
the burner box.
6.
Simmer Gas Tube
Hi-Lo Gas Tube
7 /
16 -in. Nut
9
/
16 -in. Nut
(Continued next page)