Wolf CG Series User manual

General Information 2
Component Access & Removal 4
Troubleshooting Guide 29
Technical Data 32
Wiring Diagrams 33
subzero.com 800.222.7820
CG Professional Gas Cooktop
Service Manual

Page 2
SERVICE MANUAL INTRODUCTION
This service manual assists with troubleshooting and
diagnosing malfunctions, completion of repairs, and return of
the product to proper operational condition. Read the complete
instructions contained within before initiating any repairs.
This guide is intended for use by Factory Certified Service. Wolf
Appliance, Inc. recommends that repairs be performed by
Factory Certified Service companies only.
Warning and Caution product safety labels appear throughout
this manual. Product safety labels appear at the beginning of
some sections. Follow the instructions in the product safety
labels to avoid personal injury and/or product damage. The
sample safety labels explain the types of notices that appear in
this manual.
WARNING
States a hazard that may cause serious injury or
death if precautions are not followed.
CAUTION
Indicates minor injury or product damage may occur
if precautions are not followed.
IMPORTANT NOTE: Highlights especially important information.
TIP: Indicates additional, useful information.
Information and images contained herein are copyright of Wolf
Appliance, Inc. Neither this manual nor any information or
images contained herein may be copied or used in whole or in
part without the express written consent of Wolf Appliance, Inc.
©Wolf Appliance, Inc., all rights reserved.
WOLF PRODUCT RATING PLATE INFORMATION
For CG Gas Cooktops, the product rating plate is located below
the unit.
Product
Rating Plate
Important information for each product is listed on the product
rating plate. Rating plates identify:
▪Model
▪Serial number
▪Electrical information, including current draw
▪Burner heat ratings (in Btu)
▪Type and pressure of gas
MODEL DESCRIPTIONS AND SALES ACCESSORIES
For more details on individual model descriptions and a listing
of all compatible sales accessories, see the
Wolf Distributor
Price List
.
CG SERIES GAS COOKTOPS MODEL KEY
Model Character Description
ICB International Designation
C Cooktop
G Gas
15, 24, 30, or 36 Size (in Inches)
2, 3, 4, or 5 Number of Burners
C Contemporary
P Professional
T Transitional
F Paired-Frame
S Classic Stainless Steel
LP Liquid Propane (Natural Gas if
Not Present)
PRODUCT USE AND CARE AND INSTALLATION GUIDES
Product Use and Care Guides, Installation Guides, and other
product specifications are available in the
Product
Specifications and Manuals Library
.
CG Professional Gas Cooktop Service Manual
General Information
GENERAL INFORMATION
service.subzero.com
828386 REV. A 06/2018 1

Page 3
UNIT WARRANTY
Product warranty is determined by the installation location and
the date of installation.
▪View product warranties at
http://service.subzero.com/
ClaimsAndOrderProcessing/Pages/WarrantyInfo .
▪Warranties start on the day of product installation.
▪Search for warranty and service information by serial
number, customer last name, and address using Unit
History at
http://service.subzero.com/Tools/UnitHistory .
CG Professional Gas Cooktop Service Manual
General Information
service.subzero.com
828386 REV. A 06/2018 2

Page 4
COMPONENT REMOVAL AND INSTALLATION
SPARK MODULE REMOVAL
TIP: Individual spark modules are accessible through panels on
the bottom of the unit.
WARNING
Turn off the power to the product before starting this
procedure.
Remove the Spark Module
1Use a 1/4" nut driver or socket to remove the screw holding
the igniter bracket to the burner box.
2Lower the screw side of the igniter bracket.
3Disconnect the electrode wire from the spark module.
4Disconnect the red wire connector from the L1 terminal.
5Disconnect the white wire connector from the neutral (N)
terminal.
6Use a Phillips screwdriver to remove the screws holding the
spark module to the igniter bracket.
7Remove the spark module from the unit.
SPARK MODULE INSTALLATION
Install the Spark Module
1Place the spark module onto the igniter bracket.
2Use a Phillips screwdriver to install the screws holding the
spark module to the igniter bracket.
3Connect the white wire connector to the neutral (N)
terminal.
4Connect the red wire connector to the L1 terminal.
5Connect the electrode wire to the spark module.
6Raise the screw side of the igniter bracket.
7Use a 1/4" nut driver or socket to install the screw holding
the igniter bracket to the burner box.
BURNER GRATE REMOVAL
Remove the Burner Grate
Lift the burner grate from the unit.
BURNER GRATE INSTALLATION
Install the Burner Grate
Place the burner grate onto the cooktop.
BURNER CAP REMOVAL
To remove the burner cap, first remove the burner grate.
CG Professional Gas Cooktop Service Manual
Component Removal and Installation
service.subzero.com
828386 REV. A 06/2018 3

Page 5
Remove the Burner Grate
Lift the burner grate from the unit.
Remove the Burner Cap
Remove the burner cap from the burner assembly.
BURNER CAP INSTALLATION
Install the Burner Cap
Place the burner cap onto the burner assembly.
Install the Burner Grate
Place the burner grate onto the cooktop.
KNOB REMOVAL
Remove the Knob
Pull the knob away from the unit.
KNOB INSTALLATION
Install the Knob
Push the knob onto the valve shaft.
BEZEL REMOVAL
WARNING
Turn off the power to the product before starting this
procedure.
Remove the Knob
Pull the knob away from the unit.
CG Professional Gas Cooktop Service Manual
service.subzero.com
828386 REV. A 06/2018 4

Page 6
Remove the Bezel
1Twist the bezel 90° counterclockwise.
2Pull the bezel from the pan.
3Disconnect the bezel from the light wire harness.
4Remove the bezel from the unit.
BEZEL INSTALLATION
Install the Bezel
1Connect the bezel to the light wire harness.
2Insert the bezel into the unit.
3Twist the bezel 90° clockwise.
Install the Knob
Push the knob onto the valve shaft.
BURNER ASSEMBLY REMOVAL
To remove a burner assembly, first remove the burner grate and
burner cap.
CAUTION
The unit might be supported by the burner pan. The
unit must be uninstalled if more than one burner
assembly or the burner pan is being removed.
WARNING
Turn off the power to the product before starting this
procedure.
Remove the Burner Grate
Lift the burner grate from the unit.
Remove the Burner Cap
Remove the burner cap from the burner assembly.
Remove the Burner Assembly
1Use a T-15 Torx bit to remove the screws holding the burner
assembly to the orifice holder.
2Lift the burner assembly from the burner pan.
3Remove the electrode wire from the igniter.
CG Professional Gas Cooktop Service Manual
service.subzero.com
828386 REV. A 06/2018 5

Page 7
4Remove the burner assembly from the unit.
Burner Cap
Burner Assembly
Igniter
Electrode Wire
BURNER ASSEMBLY INSTALLATION
Install the Burner Assembly
1Attach the electrode wire to the igniter.
2Place the burner assembly into the burner pan.
3Use a T-15 Torx bit to install the screws holding the burner
assembly to the orifice holder, torqued to 24 in lb.
Install the Burner Cap
Place the burner cap onto the burner assembly.
Install the Burner Grate
Place the burner grate onto the cooktop.
IGNITER REMOVAL
To remove the igniter, first remove the burner grate, burner cap,
and burner assembly.
Remove the Burner Grate
Lift the burner grate from the unit.
Remove the Burner Cap
Remove the burner cap from the burner assembly.
Remove the Burner Assembly
1Use a T-15 Torx bit to remove the screws holding the burner
assembly to the orifice holder.
2Lift the burner assembly from the burner pan.
3Remove the electrode wire from the igniter.
CG Professional Gas Cooktop Service Manual
REMOVE THE BURNER ASSEMBLY (continued)
service.subzero.com
828386 REV. A 06/2018 6

Page 8
4Remove the burner assembly from the unit.
Burner Cap
Burner Assembly
Igniter
Electrode Wire
Remove the Igniter
1Use a Phillips screwdriver to remove the screw from the
underside of the burner assembly.
2Remove the igniter from the burner assembly.
IGNITER INSTALLATION
Install the Igniter
1Install the igniter into the burner assembly.
2Use a Phillips screwdriver to install the screw into the
underside of the burner assembly.
Install the Burner Assembly
1Attach the electrode wire to the igniter.
2Place the burner assembly into the burner pan.
3Use a T-15 Torx bit to install the screws holding the burner
assembly to the orifice holder, torqued to 24 in lb.
Install the Burner Cap
Place the burner cap onto the burner assembly.
Install the Burner Grate
Place the burner grate onto the cooktop.
ORIFICE REMOVAL
The main and simmer orifices are threaded into the orifice
holder and may be removed without removing the orifice holder.
To access the orifice, first remove the burner grate, burner cap,
and burner assembly.
WARNING
Turn off the power to the product before starting this
procedure.
Remove the Burner Grate
Lift the burner grate from the unit.
CG Professional Gas Cooktop Service Manual
REMOVE THE BURNER ASSEMBLY (continued)
service.subzero.com
828386 REV. A 06/2018 7

Page 9
Remove the Burner Cap
Remove the burner cap from the burner assembly.
Remove the Burner Assembly
1Use a T-15 Torx bit to remove the screws holding the burner
assembly to the orifice holder.
2Lift the burner assembly from the burner pan.
3Remove the electrode wire from the igniter.
4Remove the burner assembly from the unit.
Burner Cap
Burner Assembly
Igniter
Electrode Wire
Remove the Orifice
Use a 9/32” socket with extension to remove the orifice from
the orifice holder.
Simmer
Orifice
Main
Orifice
ORIFICE INSTALLATION
WARNING
When installing the orifice to the orifice holder, only
pipe thread compound should be used. Do not use
Teflon tape to seal gas connections.
Install the Orifice
Use a 9/32” socket with extension to install the orifice into
the orifice holder.
Install the Burner Assembly
1Attach the electrode wire to the igniter.
2Place the burner assembly into the burner pan.
3Use a T-15 Torx bit to install the screws holding the burner
assembly to the orifice holder, torqued to 24 in lb.
Install the Burner Cap
Place the burner cap onto the burner assembly.
Install the Burner Grate
Place the burner grate onto the cooktop.
CG Professional Gas Cooktop Service Manual
service.subzero.com
828386 REV. A 06/2018 8

Page 10
BURNER PAN REMOVAL
The burner pan is held to the burner box by the screws that
mount the burner assemblies to the orifice holder assemblies.
To remove the burner pan, first remove all burner grates and
burner caps. Uninstall the unit, and then remove the knobs,
bezels, and burner assemblies.
WARNING
Turn off the power and gas to the product before
starting this procedure.
CAUTION
The unit might be supported by the burner pan. The
unit must be uninstalled if more than one burner
assembly or the burner pan is being removed.
CAUTION
If the gas line is not long enough to stay connected
when the unit is pulled out of the opening, the gas
may need to be disconnected.
Remove All Burner Grates
Lift all burner grates from the unit.
Remove All Burner Caps
Remove all burner caps from the burner assemblies.
Uninstall the Unit
Remove the unit from the installation.
Remove All Knobs
Pull all of the knobs away from the unit.
Remove All Bezels
To remove each bezel:
1Twist the bezel 90° counterclockwise.
2Pull the bezel from the pan.
3Disconnect the bezel from the light wire harness.
CG Professional Gas Cooktop Service Manual
service.subzero.com
828386 REV. A 06/2018 9

Page 11
4Remove the bezel from the unit.
Remove All Burner Assemblies
To remove each burner assembly:
1Use a T-15 Torx bit to remove the screws holding the burner
assembly to the orifice holder.
2Lift the burner assembly from the burner pan.
3Remove the electrode wire from the igniter.
4Remove the burner assembly from the unit.
Burner Cap
Burner Assembly
Igniter
Electrode Wire
Remove the Burner Pan
Lift the burner pan from the burner box.
BURNER PAN INSTALLATION
Install the Burner Pan
Place the burner pan on the burner box.
Install All Burner Assemblies
To install each burner assembly:
1Attach the electrode wire to the igniter.
2Place the burner assembly into the burner pan.
3Use a T-15 Torx bit to install the screws holding the burner
assembly to the orifice holder, torqued to 24 in lb.
Install All Bezels
To install each bezel:
1Connect the bezel to the light wire harness.
2Insert the bezel into the unit.
3Twist the bezel 90° clockwise.
Install All Knobs
Push each knob onto each valve shaft.
Install the Unit
Install the unit.
CG Professional Gas Cooktop Service Manual
REMOVE ALL BEZELS (continued)
service.subzero.com
828386 REV. A 06/2018 10

Page 12
Install All Burner Caps
Install all burner caps onto the burner assemblies.
Install All Burner Grates
Place all burner grates onto the cooktop.
RECEPTACLE REMOVAL
To access the receptacle, remove the burner grates and burner
caps. Uninstall the unit, and remove the burner assemblies,
knobs, bezels, and burner pan.
WARNING
Turn off the power to the product before starting this
procedure.
CAUTION
If the gas line is not long enough to stay connected
when the unit is pulled out of the opening, the gas
may need to be disconnected.
Remove All Burner Grates
Lift all burner grates from the unit.
Remove All Burner Caps
Remove all burner caps from the burner assemblies.
Uninstall the Unit
Remove the unit from the installation.
Remove All Knobs
Pull all of the knobs away from the unit.
Remove All Bezels
To remove each bezel:
1Twist the bezel 90° counterclockwise.
2Pull the bezel from the pan.
3Disconnect the bezel from the light wire harness.
CG Professional Gas Cooktop Service Manual
service.subzero.com
828386 REV. A 06/2018 11

Page 13
4Remove the bezel from the unit.
Remove All Burner Assemblies
To remove each burner assembly:
1Use a T-15 Torx bit to remove the screws holding the burner
assembly to the orifice holder.
2Lift the burner assembly from the burner pan.
3Remove the electrode wire from the igniter.
4Remove the burner assembly from the unit.
Burner Cap
Burner Assembly
Igniter
Electrode Wire
Remove the Burner Pan
Lift the burner pan from the burner box.
Remove the Receptacle
1Use a Phillips screwdriver to remove the mounting screws
from the receptacle.
2Remove the receptacle from the unit.
RECEPTACLE INSTALLATION
Install the Receptacle
1Install the receptacle onto the burner valve.
2Use a Phillips screwdriver to install the mounting screws
into the receptacle.
Install the Burner Pan
Place the burner pan on the burner box.
CG Professional Gas Cooktop Service Manual
REMOVE ALL BEZELS (continued)
service.subzero.com
828386 REV. A 06/2018 12

Page 14
Install All Burner Assemblies
To install each burner assembly:
1Attach the electrode wire to the igniter.
2Place the burner assembly into the burner pan.
3Use a T-15 Torx bit to install the screws holding the burner
assembly to the orifice holder, torqued to 24 in lb.
Install All Bezels
To install each bezel:
1Connect the bezel to the light wire harness.
2Insert the bezel into the unit.
3Twist the bezel 90° clockwise.
Install All Knobs
Push each knob onto each valve shaft.
Install the Unit
Install the unit.
Install All Burner Caps
Install all burner caps onto the burner assemblies.
Install All Burner Grates
Place all burner grates onto the cooktop.
ORIFICE HOLDER REMOVAL
WARNING
Turn off the power to the product before starting this
procedure.
CAUTION
If the gas line is not long enough to stay connected
when the unit is pulled out of the opening, the gas
may need to be disconnected.
Remove All Burner Grates
Lift all burner grates from the unit.
Remove All Burner Caps
Remove all burner caps from the burner assemblies.
Uninstall the Unit
Remove the unit from the installation.
CG Professional Gas Cooktop Service Manual
service.subzero.com
828386 REV. A 06/2018 13

Page 15
Remove All Knobs
Pull all of the knobs away from the unit.
Remove All Bezels
To remove each bezel:
1Twist the bezel 90° counterclockwise.
2Pull the bezel from the pan.
3Disconnect the bezel from the light wire harness.
4Remove the bezel from the unit.
Remove All Burner Assemblies
To remove each burner assembly:
1Use a T-15 Torx bit to remove the screws holding the burner
assembly to the orifice holder.
2Lift the burner assembly from the burner pan.
3Remove the electrode wire from the igniter.
4Remove the burner assembly from the unit.
Burner Cap
Burner Assembly
Igniter
Electrode Wire
Remove the Burner Pan
Lift the burner pan from the burner box.
Remove the Orifice Holder
CAUTION
Do not lift the manifold to remove the tube fittings.
Gas tubes provide support to the manifold.
Deforming the gas tube may cause knob alignment
issues.
1Use a 3/8” combination wrench to remove the simmer gas
line.
2Use a 1/2” combination wrench to remove the main gas line.
CG Professional Gas Cooktop Service Manual
service.subzero.com
828386 REV. A 06/2018 14

Page 16
3Use a Phillips screwdriver to remove the screws holding the
orifice holder to the sealed burner bracket.
Gas Line
Orifice Holder
Screw
Sealed Burner
Bracket
ORIFICE HOLDER INSTALLATION
Install the Orifice Holder
1Use a Phillips screwdriver to install the two screws holding
the orifice holder to the sealed burner bracket.
2Use a 1/2” combination wrench to connect the main gas
line.
3Use a 3/8” combination wrench to connect the simmer gas
line.
CAUTION
Do not over-torque brass fittings.
TIP: The 18K and 15K orifice holder appear exactly the same.
The screw holes on the 18K orifice holder have been offset so
that they cannot be accidentally interchanged.
Install the Burner Pan
Place the burner pan on the burner box.
Install All Burner Assemblies
To install each burner assembly:
1Attach the electrode wire to the igniter.
2Place the burner assembly into the burner pan.
3Use a T-15 Torx bit to install the screws holding the burner
assembly to the orifice holder, torqued to 24 in lb.
Install All Bezels
To install each bezel:
1Connect the bezel to the light wire harness.
2Insert the bezel into the unit.
3Twist the bezel 90° clockwise.
Install All Knobs
Push each knob onto each valve shaft.
Install the Unit
Install the unit.
Install All Burner Caps
Install all burner caps onto the burner assemblies.
Install All Burner Grates
Place all burner grates onto the cooktop.
VALVE SWITCH REMOVAL
To remove the valve switch, first remove the burner grates and
burner caps. Uninstall the unit, and then remove the knobs,
bezels, burner assemblies, burner pan, and receptacle.
WARNING
Turn off the power to the product before starting this
procedure.
CAUTION
If the gas line is not long enough to stay connected
when the unit is pulled out of the opening, the gas
may need to be disconnected.
CG Professional Gas Cooktop Service Manual
REMOVE THE ORIFICE HOLDER (continued)
service.subzero.com
828386 REV. A 06/2018 15

Page 17
Remove All Burner Grates
Lift all burner grates from the unit.
Remove All Burner Caps
Remove all burner caps from the burner assemblies.
Uninstall the Unit
Remove the unit from the installation.
Remove All Knobs
Pull all of the knobs away from the unit.
Remove All Bezels
To remove each bezel:
1Twist the bezel 90° counterclockwise.
2Pull the bezel from the pan.
3Disconnect the bezel from the light wire harness.
4Remove the bezel from the unit.
Remove All Burner Assemblies
To remove each burner assembly:
1Use a T-15 Torx bit to remove the screws holding the burner
assembly to the orifice holder.
2Lift the burner assembly from the burner pan.
3Remove the electrode wire from the igniter.
CG Professional Gas Cooktop Service Manual
service.subzero.com
828386 REV. A 06/2018 16

Page 18
4Remove the burner assembly from the unit.
Burner Cap
Burner Assembly
Igniter
Electrode Wire
Remove the Burner Pan
Lift the burner pan from the burner box.
Remove the Receptacle
1Use a Phillips screwdriver to remove the mounting screws
from the receptacle.
2Remove the receptacle from the unit.
Remove the Valve Switch
1Use a Phillips screwdriver to remove the color-coded screw
from the switch.
2Lift the switch from the valve.
3Remove the black wire from the normally-open (NO)
terminal.
4Remove the red wire from the common (C) terminal.
VALVE SWITCH INSTALLATION
Install the Valve Switch
1Install the red wire onto the common (C) terminal.
2Install the black wire onto the normally-open (NO) terminal.
3Place the switch onto the valve.
4Use a Phillips screwdriver to install the color-coded screw
onto the switch.
TIP: Do not over-torque the screw when installing the new
switch.
Install the Receptacle
1Install the receptacle onto the burner valve.
2Use a Phillips screwdriver to install the mounting screws
into the receptacle.
Install the Burner Pan
Place the burner pan on the burner box.
CG Professional Gas Cooktop Service Manual
REMOVE ALL BURNER ASSEMBLIES (continued)
service.subzero.com
828386 REV. A 06/2018 17

Page 19
Install All Burner Assemblies
To install each burner assembly:
1Attach the electrode wire to the igniter.
2Place the burner assembly into the burner pan.
3Use a T-15 Torx bit to install the screws holding the burner
assembly to the orifice holder, torqued to 24 in lb.
Install All Bezels
To install each bezel:
1Connect the bezel to the light wire harness.
2Insert the bezel into the unit.
3Twist the bezel 90° clockwise.
Install All Knobs
Push each knob onto each valve shaft.
Install the Unit
Install the unit.
Install All Burner Caps
Install all burner caps onto the burner assemblies.
Install All Burner Grates
Place all burner grates onto the cooktop.
BURNER VALVE REMOVAL
To remove the burner valve, first remove the burner grates and
burner caps. Uninstall the unit, and then remove the knobs,
bezels, burner assemblies, burner pan, and receptacles.
WARNING
Turn off the power and gas to the product before
starting this procedure.
CAUTION
If the gas line is not long enough to stay connected
when the unit is pulled out of the opening, the gas
may need to be disconnected.
Remove All Burner Grates
Lift all burner grates from the unit.
Remove All Burner Caps
Remove all burner caps from the burner assemblies.
Uninstall the Unit
Remove the unit from the installation.
CG Professional Gas Cooktop Service Manual
service.subzero.com
828386 REV. A 06/2018 18

Page 20
Remove All Knobs
Pull all of the knobs away from the unit.
Remove All Bezels
To remove each bezel:
1Twist the bezel 90° counterclockwise.
2Pull the bezel from the pan.
3Disconnect the bezel from the light wire harness.
4Remove the bezel from the unit.
Remove All Burner Assemblies
To remove each burner assembly:
1Use a T-15 Torx bit to remove the screws holding the burner
assembly to the orifice holder.
2Lift the burner assembly from the burner pan.
3Remove the electrode wire from the igniter.
4Remove the burner assembly from the unit.
Burner Cap
Burner Assembly
Igniter
Electrode Wire
Remove the Burner Pan
Lift the burner pan from the burner box.
Remove the Receptacle
1Use a Phillips screwdriver to remove the mounting screws
from the receptacle.
2Remove the receptacle from the unit.
CG Professional Gas Cooktop Service Manual
service.subzero.com
828386 REV. A 06/2018 19