Turbo Chef Technologies C3-C, C3-AB, C3Multi, C3-CMulti User Manual

C3/AB, C3/C, C3Multi, C3/CMulti

CONVECTION MICROWAVE OVEN

SERVICE AND REPAIR MANUAL

TURBOCHEF TECHNOLOGIES INC.

www.turbochef.com

10500 Metric Drive, Suite 128, Dallas, Texas 75243 USA

(800) 908 TURBO (8-8726)

© 2004 - TurboChef Technologies Inc

.

PN: TC3-0215 Rev. D January 2, 2004

TurboChef Technologies, Inc.

This page intentionally left blank.

Table of Contents

READ THIS FIRST …………………………………………………………………………… i
Important Safety Instructions ……………………………………………………………….. ii
Precautions to Avoid Possible Exposure to Excessive Microwave Energy ……………. iii
Precautions to be Observed Before and During

Servicing to Avoid Possible Exposure to Excessive Microwave Energy ………………. iv
Grounding Instructions ………………………………………………………………………. v
Power Cord Replacement …………………………………………………………………… v
RF Interference Considerations …………………………………………………………….. vi

Chapter 1 Installation Specs

Oven Description …………………………………………………………………. 1-2
Installation ………………………………………………………………………… 1-2
Oven Location

1-3

Chapter 2 Cleaning & Care

Basic Cleaning Procedures ……………………………………………………… 2-2

Chapter 3 Theory of Operation

Theory of Operation Description ………………………………………………… 3-2
Glossary of Common Operating Terms ………………………………………….. 3-3
Programming Mode 3-4

Chapter 4 Fault Codes

Fault Code Introduction ………………………………………………… 4-2
Fault Code Summary Matrix ………………………………………….. 4-3

Chapter 5 Test

Test Function Detailed Description ……………………………………………… 5-2
Passwords for Operating C3 ovens ………………………………………….. 5-3

Chapter 6 Electrical Compartment & Controls

Electrical Component Locations C3/AB 6-2
Electrical Component Locations C3/C 6-3
Electrical Component Locations C3/Multi 6-4
Electrical Component Locations C3/C Multi ………………… 6-5
Electrical Component Parts Lists 6-6
Control Panel Detail 6-8
Control System Troubleshooting 6-9
(SMT) I/O Board Troubleshooting 6-10

Chapter 7 Cook Door

Door Switches and Circuit Breakers 7-2
Door Switch Adjustment 7-4
Door Removal and Replacement ………………………………………………. 7-10

TurboChef Technologies, Inc.

Door Removal and Replacement Left Side Parts List 7-13
Door Removal and Replacement Right Side Parts List 7-16
C3/C AND C3/CMULTI Door Assy and Parts List 7-18

Chapter 7 Cook Door

C3/AB and C3MULTI Door Assy and Parts List 7-21

Chapter 8 Convection Circuit

Catalytic Converter ………………………………………………………………. 8-2
Convection Element and Thermocouples ……………………………………… 8-3
How to Turn Heaters ON & OFF …………………………………………. 8-4
Changing Heater Operating Voltage …………………………………………. 8-5
Heater Circuit Defective Messages …………………………………………. 8-6
Convection (Blower) Motor Operation ……………………. 8-9
How to Turn Blower On ……………………. 8-9
Checking Input Voltage at Motor Controller ……………………. 8-9
Blower Circuit Defective Messages ……………………. 8-10
SP-200 Blower Motor Controller Fault Codes & Troubleshooting……………….8-11
Delta Blower Motor Controller Fault Codes & Trobleshooting…………………. 8-13
Convection Motor Parts List …………… ………. 8-16

Chapter 9 Microwave Circuit

Measuring for Microwave Radiation Leakage ………………………………… 9-2
Microwave Circuit Defective Messages………………………………………… 9-3
Magnetron & Monitor Circuits…………………………………………………………9-3
Magnetron High Voltage Power Supply………………………………………….. 9-5
Magnetron Testing ……………………………………………………………….. 9-6
Magnetron Removal and Replacement ………………………………………… 9-6
Component Testing (Diode, Capacitor, Transformer)…………………………… 9-7
Transformer Specifications ……………………………………………………… 9-8
Waveguide Components Parts List 9-10

Chapter 10 (SMT)I/O BOARD & Schematics

C3/AB Schematic ………………………………………………………………….. 10-2
C3/C Schematic 10-3
C3Multi Schematic 10-4
I/O Board Layout 10-5

READ THIS FIRST

Before working on the TurboChef Technologies, Inc. C Series oven you must first read the safety
instructions on the following pages. The C3 series oven is a combination convection/microwave oven.
While servicing this oven, an RF meter must be used at all times to check for microwave leakage. This RF
reading must be recorded on your work invoice.

Very often poor cleaning will result in microwave leakage. Please refer to chapter 2, Cleaning & Operation,
for information on the proper cleaning procedures.

Before removing the metal skin to access the electrical components in this oven, the power must be shut
off and the oven unplugged. Wait at least one full minute before removing the oven skin so that the
magnetron circuit can self–discharge. FAILURE TO DO SO MAY RESULT IN DEATH OR SERIOUS

INJURY.
PLEASE NOTE: THIS MANUAL ONLY COVERS C3/AB OVENS PRODUCED BY THE BLODGETT

OVEN CORPORATION, C3MULTI OVENS PRODUCED TURBOCHEF, C3/C AND C3/CMULTI OVENS
PRODUCED BY TURBOCHEF TECHNOLOGIES IN CHINA.

This manual is divided into ten (10) chapters as follows:

1. INSTALLATION SPECS - This chapter includes oven specifications and the parameters for
proper installation.

2. CLEANING & OPERATION - Improper cleaning can and will affect the operation of this oven. This
chapter includes a brief description of the cleaning and operation
procedures of the oven and the procedures to edit or change a
cooking program.

3. THEORY OF OPERATION - This chapter provides a total oven overview of all major subsystems in
the oven. Additionally, it provides a list of major terms and
programming instructions.

4. FAULT CODES - This chapter includes information on all fault codes currently
programmed in the oven to display in the event of a major mulfucntion.

5. TEST - This chapter details the Test Mode, which allows the technician to
operate individual components or section of the C3 SERIES oven.

Using this feature will isolate most electrical troubleshooting
problems.

6. ELECTRICAL COMPARTMENT - This chapter identifies the electrical compartment components,
including the smt board (computer board) and a troubleshooting guide.

Use the key to help isolate electrical troubleshooting problems.

7. COOK DOOR - This chapter includes information on the Cook Door adjustment,
assembly and troubleshooting techniques.

8. CONVECTION CIRCUIT - This chapter provided information on the convection and blower motor
speed control. Removal and cleaning of the catalytic converter are
also provided.

9. MICROWAVE CIRCUIT - This chapter includes information on the microwave circuit and stirrer
motor.

10. I/O Board/Schematics - This chapter includes information on I/O board and schematics on
ovens currently in the field (latest production is only represented)

This Service and Repair manual is set up for use by qualified technicians only. If you are unfamiliar
with this oven, call TurboChef Technologies Inc.

i

IMPORTANT SAFETY INSTRUCTIONS

WHEN USING ELECTRICAL APPLIANCES, THE FOLLOWING

BASIC SAFETY PRECAUTIONS SHOULD BE STRICTLY ADHERED TO:

WARNING!!
To reduce the risk of burns, electric shock, fire, injury to persons or exposure to excessive
microwave energy:

1. Read all instructions before using the appliance.

2. Read and follow the specific PRECAUTIONS TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE
MICROWAVE ENERGY found on pages iii & iv.

3. This appliance must be grounded. Connect only to properly grounded outlet. See GROUNDING
INSTRUCTIONS found on page v.

4. Install or locate this appliance only in accordance with the provided installation instructions.

5. Some products such as whole eggs and sealed containers - for example, closed glass jars - may
explode and SHOULD NOT be heated in this oven.

6. Use this appliance only for its intended use as described in the manual. DO NOT use corrosive
chemicals or vapors in this appliance. This type of oven is specifically designed to heat, cook, or dry
food. It is NOT designed for industrial or laboratory use.

7. Children SHOULD NOT use this appliance.

8. DO NOT operate this appliance if it has a damaged cord or plug, if it is not working properly, or if it has
been damaged or dropped. See POWER SUPPLY CORD REPLACEMENT found on page v.

9. This appliance should be serviced only by qualified service personnel. Contact the nearest authorized
service facility for examination, repair or adjustment.

10. DO NOT cover or block any openings on the appliance.

11. DO NOT store this appliance outdoors. DO NOT use this product near water - for example, near a
kitchen sink, in a wet basement, or near a swimming pool.

12. DO NOT immerse cord or plug in water.

13. Keep cord away; from heated surfaces.

14. DO NOT let cord hang over edge of table or counter.

15. DO NOT use a water jet for cleaning.

16. See the Maintenance section of this manual.

17. To reduce the risk of fire in the oven cavity:
a) DO NOT overcook food. Carefully attend appliance if paper, plastic, or other combustible materials

are placed inside the oven to facilitate cooking.
b) Remove wire twist-ties from paper or plastic bag in oven.
c) If materials inside the oven should ignite, keep oven door closed, turn oven off, and disconnect the

power cord, or shut off power at the fuse or circuit breaker panel.
d) DO NOT use the cavity for storage purposes. DO NOT leave paper products, cooking utensils, or

food in the cavity when not in use.

SAVE THESE INSTRUCTIONS

ii

PRECAUTIONS TO AVOID POSSIBLE

EXPOSURE TO EXCESSIVE MICROWAVE ENERGY

1. DO NOT attempt to operate this oven with the door open since open-door operation can result in
harmful exposure to microwave energy. It is important not to defeat or tamper with the safety interlocks.

2. DO NOT place any object between the oven front face and the door or allow soil or cleaner residue to
accumulate on the sealing surfaces.

3. DO NOT operate the oven if it is damaged. It is particularly important that the oven door close properly
and that there is no damage to the:

a) Door (bent).
b) Hinges and latches (broken or loosened).
c) Door seals and sealing surfaces.

4. The oven SHOULD NOT be adjusted or repaired by anyone except properly qualified service
personnel.

SAVE THESE INSTRUCTIONS

iii

PRECAUTIONS TO BE OBSERVED BEFORE

AND DURING

SERVICING TO AVOID POSSIBLE EXPOSURE

TO EXCESSIVE MICROWAVE ENERGY

1. DO NOT operate or allow the oven to be operated with the door open.

2. Make the following safety checks on all ovens to be serviced before activating the magnetron or other
microwave source, and make repairs as necessary:

a) Interlock operation.
b) Proper door closing.
c) Seal and sealing surfaces (arcing, wear, and other damage).
d) Damage to or loosening of hinges and latches.
e) Evidence of dropping or abuse.

3. Before turning on microwave power for any service test or inspection within the microwave generating
compartments, check the magnetron, wave guide, or transmission line, and cavity for proper alignment,
integrity, and connection.

4. If the oven is operative prior to servicing, a microwave emission check should be performed prior to
servicing the oven. Refer to page 6-2 of this manual for microwave leakage testing procedure.

5. Any defective or mis–aligned components in the interlock, monitor, door seal, and microwave
generation and transmission systems shall be repaired, replaced, or adjusted by procedures described
in this manual before the oven is released to the owner.

6. A microwave leakage check to verify compliance with the Federal Performance Standard MUST BE
performed on each oven prior to release to the owner. Refer to page 6-2 of this manual for microwave
leakage testing procedure.

SAVE THESE INSTRUCTIONS

iv

General Note about Construction

GROUNDING INSTRUCTIONS

This appliance MUST BE grounded. In the event of an electrical short circuit, grounding reduces the risk of
electric shock by providing an escape wire for the electric current. This appliance is equipped with a cord
having a grounding wire with a grounding plug. The plug must be plugged into an outlet that is properly
installed and grounded.

WARNING!!
Improper use of the grounding can result in a risk of electric shock.

Consult a qualified electrician or serviceman if the grounding instructions are not completely understood, or
if doubt exists as to whether the appliance is properly grounded.

DO NOT use an extension cord. If the power supply cord is too short, have a qualified electrician or
serviceman install an outlet near the appliance.

POWER SUPPLY CORD REPLACEMENT

If the power supply cord is damaged, it MUST BE replaced by the manufacturer or its service agent or a
similarly qualified person in order to avoid a hazard.

Please be advised that the TurboChef C3 series ovens are manufactured in various locations, as such the
C3/C and C3/Cmulit are constructed using the Metric System. Therefore, it is very important to note the
model number of the unit you are servicing to ensure you get the correct Metric component. Care has
been given in this manual to list the different part numbers for the Metric and Imperial (C3/AB and C3Multi)
ovens. In addition, please note that most hardware on the C3/C and C3/Cmulti oven is metric unless
otherwise specified.

SAVE THESE INSTRUCTIONS

v

RF INTERFERENCE CONSIDERATIONS

This oven generates radio frequency signals. This device has been tested and determined to be in
compliance with applicable part of FCC part 18 requirements and to the protection requirements of Council
Directive 89/336/EEC on the approximation of the laws of the Member States relating to electromagnetic
compatibility at the time of manufacture. However, some other equipment may exhibit sensitivity to signals
below these limits resulting in interference with that equipment.

If your equipment experiences interference, the following steps should be considered:

1. Increase the physical separation between this oven and the sensitive equipment.

2. If the sensitive device can be grounded, do so following accepted grounding practices.

3. If battery powered microphones are being affected, insure that the batteries are fully charged.

4. Keep sensitive equipment on electrically separate circuits, if possible.

5. DO NOT route intercom wires, microphone wires, or speaker cables near oven.

SAVE THESE INSTRUCTIONS

vi

CHAPTER 1

INSTALLATION SPECS

) All Models

) All Models

e to be furnished by

TurboChef Technologies, Inc. C series

OVEN DESCRIPTION

SPECIFICATIONS C3/AB, C3MULTI, C3/C, AND C3/CMULTI

Dimensions (single unit) 29” W x 25.5” H x 29.5” D (73.66 cm x 64.77 cm x 74.93 cm)
Dimensions (double stacked units) 29” W x 43” H x 29.5” D (73.66 cm x 109.22 cm x 74.93 cm)
Maximum Input 7.2 kW
Power Supply
US (1 φ

Europe(1φ
US (3φ) C3Multi and C3/Cmulti 208 VAC, 60Hz, 3 φ, Delta, 30 amp, 4 wire including ground

Europe (3φ) C3Multi and C3/Cmulti

Microwave Frequency 2.45 GHz
Connections including ground The unit is supplied with a 6’ power cord that includes:

Maximum Power Usage

Convection Oven
Microwave Oven

208 VAC, 60Hz, 1 φ, 35 amp, 3 wire including ground
240 VAC, 60 Hz, 1φ, 30 amp, 3 wire including ground
230-240 VAC, 50 Hz, 1φ, 30 amp, 3 wire including ground

240 VAC, 60 Hz, 3φ, Delta, 22 amp, 4 wire including ground
380-415 VAC, 50 HZ, 3φ, WYE, 15 Amp, 5 wire including ground
230-240 VAC, 50 HZ, 3φ, Delta, 22 Amp, 4 wire including ground

US (1 φ) NEMA 6-50P

Europe(1φφφφ) 32A IEC 60309 plug

US (3 φ) NEMA 15-50P

Europe(3φφφφ) 32A IEC 5 Pin plug

The outlet box, receptacle, and wall plate ar
the installing contractor.

5.2 kW

2.0 kW

TABLE 1 - 1 Oven Specifications

INSTALLATION

The TurboChef Technologies, Inc. oven is
manufactured to comply with applicable CE, ETL,
FDA, and FCC requirements. In addition, the unit
is ETL classified to NSF 4. Note: Some
European models may or may not be certified
under US FDA and/or ETL regulations. All
equipment is designed and certified for safe
operation when installed in accordance with local
and/or national codes. Many local codes exist,
and it is the responsibility of the owner and
installer to comply with these codes. In addition,
if the oven is not UL or ETL listed it MAY NOT BE
USED or SOLD in the U.S.A or any of its
territories.

In no event shall the manufacturer assume any
liability for damages or injuries resulting from
installations which are not in compliance with the
instructions and codes listed above.

1 - 2

WARNING!!

DEATH, INJURY, AND EQUIPMENT DAMAGE
could result from improper installation of this
oven or installation of an oven which has
been damaged during shipment or storage.
Either of these conditions could void the
equipment warranty.

DO NOT INSTALL an oven suspected of
damage.

INSTALL this oven according to the policies
and procedures outlined in this manual.

Installation Specs

OVEN LOCATION

The well planned and proper placement of your
oven will result in long term operator convenience
and satisfactory performance.

Be sure to place the oven in an area which is
accessible for proper operation and servicing.

The countertop or work surface must be able to
support the weight of 250 pounds. The
manufacturer shall not assume liability for
damage or injury resulting from improper
installation of equipment including temporary or
unstable work stations or countertops.

There must be 2” (5.08 cm) between the top of
the unit and any shelf or other surface.

The oven must be installed level front to back
and side to side. The oven legs may be bolted to
the counter top if desired.

Countertop surface must be at least 30 inches
deep. Operator is responsible for proper
placement on the countertop. TurboChef will not
be responsible should an oven fall off a
countertop due to improper placement or use by
the customer. Oven placement shall be readily
accessible by a service agent. Additional charges
ma be incurred by the customer should product
placement mandate required service labor
charges due to accessibility to the unit.

1- 3

CHAPTER 2

CLEANING & OPERATING

TurboChef Technologies, Inc. C Series

BASIC CLEANING PROCEDURES

PROBLEMS ASSOCIATED WITH IMPROPER
CLEANING

The oven may not be operating correctly because
it is not being cleaned properly. If the door is
leaking microwaves, erratic operation of the
display and other electrical components can
occur. Also food deposits left in the oven will turn
into black carbon from the high heat. Carbon can
cause arcing inside the cooking area and can
reflect energy back to the magnetron.

If a customer tells you they are experiencing
cooking performance problems, carefully inspect
the cooking platter and waveguide cap for chips.
If the platter or waveguide cap are chipped and
soaked in water, they will absorb the water. The
water will then be heated instead of the food
product. The chipped part must be replaced.

DAILY CLEANING

1. Carefully remove the ceramic cooking platter
and wave–guide cap. Spray both pieces only
with TurboCare®®®® Oven Cleaner and set
aside to allow the cleaner to penetrate. DO

NOT soak the Ceramic Cook Platter or
Waveguide Cap in water.

2. Clean the ceramic cooking platter, and wave

3. Reinstall the clean wave–guide cap into

4. To clean the interior of the oven, use a 3”x5”

5. Remove the lower access panel and grease

6. Verify the louvers on the front and side of the

MONTHLY CLEANING

Remove and clean the exhaust cover from the
back of the oven.

guide cap using brushes and scrub pads.
Rinse to remove all cleaner and debris.
Inspect for damage and replace as required.

the oven. This will protect the wave–guide
seal while the cook chamber is cleaned.

green scrub pad. Use only TurboCare®®®®
Oven Cleaner on tough spots. DO NOT
wash out the interior cooking area. The
waveguide quartz seal is not a water tight
seal. Wipe out the oven with a damp rag. If
the door area needs cleaning, be careful not
to damage the small rubber gasket around
the door shunt area.

collection pan. Empty, clean and reinstall the
pan.

oven are clean of lint and unobstructed.

Cook Platter

Waveguide

Cap

Grease

Tray

Exhaust

Cover

FIGURE 2 - 1 Cleaning

2-2

Lower Access

Panel

CHAPTER 3

THEORY OF OPERATION

SECTION 8

Converter

SECTION 9

SECTION 6

Cooking

TurboChef Technologies, Inc. C Series

INTRODUCTION

The TurboChef C3/C oven utilizes two independent heat transfer mechanisms in order to rapidly cook food.
The systems are as follows: Convection and Microwave energy. By combining these mechanisms and
with our ability to control each mechanism independently, we are able to reduce the cook time of most
foods by 70%-90%.

For the purpose of this manual we will identify each independent heat transfer mechanism individually. For
instance, if an oven is experiencing difficulties browning the food, you know to focus on the Convection
Circuit not the Microwave System. If an oven is browning the food but not heating the food, you will know to
focus on the Microwave System.

The following block diagram represents the oven’s different systems and their critical components. If you
are experiencing problems with any of the components listed below, please turn to the appropriate section.

Convection System

• Convection.

Heater

• Blower

Controller

• Convection

Blower

• Catalytic

Control System

• I/O Board

• Keypad

• Display

• Mech. Relays

• SS Relays

Process

Food Products

Profiles

Microwave System

• Magnetron

• HV Transformer

• Filament Trans.

•

HV Capacitor

• Mechanical
Microwave
Components

3-2

GLOSSARY OF COMMON
OPERATING TERMS

Display

messages to the operator.

Keypad

operator to control the oven.

Cook Chamber

food products are cooked.

PRODUCT RECIPES

- Primary interface to relay

- Primary interface for the

- Cavity in which the

Theory of Operation

Cook Temperature Set Point

Temperature should be a constant
parameter. The same cook temperature
should be used by all cook recipes.

MODES
Mode

allows certain operations to occur. There
are several modes, STANDBY, COOK,
WARM UP and COOL DOWN in which
the oven can operate.

– The software environment which

-

Recipe

programming consists of total time,
percent of total time per event,
percentage of hot air flow (AIR) required
and microwave (MW) level required.

Cook Cycle

a recipe.

Cook Event

to 6 events can be used for each recipe.

Duration

of a single cook event.

Air

- Percent of convection air flow

during a cook event.

MW

a cook event.

- The food product recipe

- Total time of operation for

– Segment of a recipe, up

- Time, in percent of total time

- Percent of microwave used during

Standby Mode

similar to oven off. In standby there is no
power to the oven. There is power to the
control, however, the oven will not
operate in standby mode.

Cook Mode

normal oven operations, such as,
monitor the key pad for requests to cook
or change mode, and maintain the oven
at the cook temperature set point.

Warm–Up Mode

oven up to the cook temperature set
point.

Cool–Down Mode

components except the cooling fan and
circulation blower.

- The standby mode is

- Mode used to perform the

- Mode to bring the

- Turns off all oven

3-3

Figure 3

-

2: Edit Groups

Group A

1

ITEM 5

ITEM

2nd ITEM 6

ITEM

3RD ITEM 7

ITEM

4TH ITEM

8TH ITEM

Figure 3

-

1: Edit Groups

EDIT GROUPS

GROUP A GROUP E

GROUP B GROUP F

GROUP C GROUP G

GROUP D GROUP G

TurboChef Technologies, Inc. C Series

Programing

Edit Mode

Edit mode enables the operator to alter
Recipes and the Cook Chamber
Temperature (CC). To Access Edit Mode,
press the “Up” and “Down” Arrows Keys on
the keypad simultaneously. When
prompted, enter the Access Code “9” and
then press “Enter”.

Changing the Cook Chamber
Temperature

The first screen in Edit Mode allows you to
change the Cook Chamber Temperature
(CC) by pressing the “Up” and “Down” Arrow
Keys. The operator may adjust the
temperature between 350oF and 525oF in
25oF increments. Once you have selected
the desired temperature, press the “Enter”
Key to set CC.

Altering a Recipe

The C3 oven control has 64 unique Recipes
available for the operator. The Display will
show 1 page of 8 Recipe Groups. Each
Recipe Group contains 8 Subgroups or
Recipes. See Figures 3-1 and 3-2.

To alter a Recipe, enter Edit Mode as
described above. After you have entered
the Access Code and set CC, the screen will
display the 1st set of 8 Recipe Groups.

Now select the Recipe Group that contains
the individual Recipe you wish to alter.
Next, select which Recipe you wish to alter
by pressing the Soft-Key corresponding to
the Recipe Item. See Figure 3-2.

st

TH

TH

TH

3-4

Figure 3

-

3: Edit Groups

< GROUP 1 >

COUNT 0

WARMING UP

% TIME %AIR %WAV

TEST

SAVE

COOK TIME 00:00

1 xxx 1

0 xxx

Figure 3

-

4: Done State

SAVE

TIME

COOK

MORE

DONE

ITEM 1

2 xxx 10 xxx
3 xxx 10 xxx
4 xxx 10 xxx
5 xxx 10 xxx
6 xxx 10 xxx

Use the “Up” and “Down” keys to navigate
through a Recipe and use the Keypad and
the “Enter” key to alter any of the following
parameters:

Theory of Operation

User Configurable Options:

The user may enable or disable the
following options:

Edit Mode: For security purposes the Edit
Mode can be disabled by pressing the “Back
Arrow” and “Enter” keys simultaneously and
entering the Access Pin: “T-I-D-E” &
“Enter”. When prompted select either “9” to
re-enable Edit Mode or any other key to
disable Edit Mode.

Done State: The Done State (Figure 3-4)
can be removed to eliminate the option to
Save an altered Time or the option to Cook
More.

COOK TIME: Total duration of the Cook
Cycle. Enter the desired time and press
“Enter”. Valid times are between 1 second
and 5 minutes.

Events 1…6: Use the keypad and “Enter”
key to enter values for % Time, % Air and %
MW.

The % Time for all Events must total
to 100%. The operating system will
not allow a combination of Events
that do not total to 100% or exceed
100%.

The % Air parameter is valid
between 10 and 100%. Note: If an
Event is unused, the %Air
parameter may be displayed as 0%.
It is only a default.

The % MW parameter is valid
between 0 and 100%.

Once the desired changes have been made,
you may test the recipe by pressing the
“Test” Soft-Key. This will execute the
displayed recipe. Once you are satisfied
with the Recipe, press “Save” to
permanently store your changes. Press the
“Back Arrow” 4 times to exit the Edit mode.

To disable the Done State, press the “Back
Arrow” and “Enter” keys simultaneously and
Enter the Access Pin “D-O-N-E” and Enter.
When prompted, press “9” to re-enable or
any other key to disable the Done State.

Time State: This state can be removed to
prevent the User from adjusting the Total
Cook Time prior to pressing the “Start” Soft
Key to begin a Cook Cycle. See Figure 3-5.

3-5

Caution:

Figure 3

-

5: Time State

Start

Enter Cook Time

TurboChef Technologies, Inc. C Series

“Enter” the Access Pin “T-I-M-E” and
“Enter”. When prompted, press “9” to re­enable or any other key to disable the Time
State.

Passwords

Edit Mode: “Back and “Enter”
simultaneously. Enter Pin: “9” & “Enter”.

Test Mode: “Back and “Enter”

00:20

simultaneously. Enter Pin: “9-4-2-8” &
“Enter”.

Reset Control (Soft Restart): “Back and
“Enter” simultaneously. Enter Pin: “9-4-7-1”
& “Enter”.

Erase: “Back and “Enter” simultaneously.
Enter Pin: “3-7-2-7” & “Enter” When asked
“Erase Menu” press “3”.

To disable the Time State, press the “Back
Arrow” and “Enter” keys simultaneously and

The Erase command will
PERMANENTLY DELETE all
stored recipes and settings.

3-6

CHAPTER 4

FAULT CODES

F1 BLOWER

F2LOWTEMP

F3 MAG CURR

F4 MONITOR

F5 MAG TEMP

F6 EC TEMP

TEST C3AD_V

CC XX˚F HX XX

˚

F

0

0

0

0

0

0

Figure 4

-

1: Fault

TurboChef Technologies, Inc. C Series

Introduction Fault Code Introduction:

The C3C oven has the ability to continually
monitor and log various fault conditions. Some
fault conditions will terminate cook cycles, while
others will not. Please refer to Table 4-1 for fault
codes:

The Codes are listed in order of hierarchy. For
example: If during cooking the oven experiences
an F1 and F2 fault, the oven will only report a F1
fault since the software will halt all actions upon
discovering the F1 fault.

In addition if a fault is detected the fault counter
will increment. If the fault is cleared the fault
counter will not de-increment.

View Fault Codes

To view the Fault Log, press the “4” and “6” keys
simultaneously in the Off State. The oven will
display all logged faults. See Figure 4-1.

Each Fault Register will log up 255 instances
before rolling back to zero. The Cook Count will
log up to 65,535 Cook Cycles. Note: In order
for the Control to log a Cook Cycle, the oven
must complete the 1st Event of any given recipe.
If a Recipe only has 1 Event, the oven must
complete the entire Cook Cycle in order to count
the Cook Cycle.

COOK FAULTS

Note: To reset Fault Counter, Press the “0” key.
LOW MAG CURR (HV BREAKDOWN) or F3

MAG CURR – the magnetron transformer is
drawing less than 7 amps. The normal current
draw is approximately 9 amps. The current draw
is being monitored by the control board which
has a current transformer mounted on it. See
section 6

LOW COOK TEMP or F2 LOW TEMP– the
temperature set for the C3 SERIES is not being
maintained within 84oF (46oC) differential of the
Cook Chamber Setpoint. It is referenced by the
cook chamber type K thermocouple. Note: It
may also be controlled by the heat exchanger
thermocouple. See section 5

MAG OVER TMP or F5 MAG TEMP– the snap
disk on the magnetron has overheated and has
tripped. Reference Chpt. 9

BLOWER STATUS or F1 BLOWER – The
control board is not receiving the proper output
from the convection (blower) motor speed
control. Reference Chpt. 8

ELEC OVR TMP (EC TMP HIGH) or F6 EC
TEMP – The electronics compartment

thermocouple connected to the control board has
detected a temperature above 140ºF (60ºC).
Reference Chpt. 6

OVEN DOOR OPEN – (during cook cycle) the
cooking door has been opened during a cook
cycle and has not been closed properly.

DOOR MONITOR or F4 MONITOR: -- The
control board senses that the Cook Door

Monitor Switch is out-of-sequence with the
Primary and/or Secondary Door Switches.

Reference Chpt. 7
HX RISE LOW - HX (Heater) Temperature has

failed to rise 14ºF (~8ºC) F in 30 seconds.
Reference Chpt. 8

NOTE: Some error codes may be different or
no longer available or current. The following
list details all error codes created since
C3/AB, C3/C, C3CMulti and C3/AB-Multi no
exceptions.

4-2

Fault Code Messages Matrix

Theory of Operation

New Error

Old Error Code

BLOWER STATUS F3 BLOWER X
LOW COOK TMP F2 LOW TEMP
LOW MAG CURR F3 MAG CURR
DOOR MONITOR F4 MONITOR
MAG OVER TMP F5 MAG TEMP
ELEC OVR TMP F6 EC TEMP X X X 6

HX RISE LOW
THERMO OPEN

OVEN DOOR AJAR Same X
EC TEMP HIGH F6 EC TEMP X X X 6
CLOSE OVEN
DOOR

Code

Same
Same

same

Warm-

Up

X

X

X X 8
X

X X X 7

While

Cooking

X
X
X

X

X
X

Self-

Test

X 8

8

X 9
X 9

X 8
X 7

Reference

Chapter

7

TABLE 4-1

Notes:

1. All Fault Codes listed in BOLD will terminate a Cook Cycle upon discovery.

2. Any fault occurrence during Cook mode will be logged in the Fault Counter.

3. ELEC OVR TMP/EC TEMP HIGH/F6 fault code will not terminate a cook cycle,
however it will alert the user of a possible air circulation problem (Page 6-10)

4-3

CHAPTER 5

TEST

TurboChef Technologies, Inc. C Series

Test Mode

TO ENTER TEST FUNCTION MODE

1. From the standby mode, press and hold
both BACK and ENTER keys
simultaneously.

2. The display reads:

ENTER ACCESS CODE

3. Use the NUMERIC keypad to enter the
following access code:

9- 4- 2- 8 (Older Ovens 8- 3 -1 -7)

4. Press the ENTER key.

TEST FUNCTION OPTIONS

The test screen displays the CC (cook cavity)
and HX (heat exchange) temperature at the top
of the screen.

The control displays page one of the test function
options. Press the DOWN ARROW key to display
page two of the test functions options.

To access a test function, press the
corresponding soft key repeatedly.

Blower Speed

The BLOWER key increments the blower speed
in 10% steps. When the blower speed is 100%,
the next press sets the speed to 0%.

Electronic Compartment Temperature

The ºELEC key displays the temperature inside
the electronic enclosure.

Self Test Function

The STEST key initiates a self–test function to
test all major components of the oven. Press the
L4 key once to run the Self Test. Press the BACK
key to return to the standby mode.

Heater Test

The HEATER key turns the heater on or off. If the
heaters are on, pressing the key turns the
heaters off. If the heaters are off and the
maximum (HX) temperature (900ºF) is not
exceeded, pressing the HEATER key turns the
heaters on. If the blower speed is 0, the blower
speed is set to the Idle Airflow.

Magnetron

The MGTRON key is a press and hold key to test
the magnetron. If the magnetron filaments are off
when the MGTRON key is pressed, the message
“MAG WARMING UP” is displayed. After a 3
second delay or if the filaments are already on,
“MAG ON, RF xxx” is displayed. “xxx” is the

fluctuating microwave power measured in the
wave–guide. Any time the MGTRON key is
released, the magnetron turns off. The filament
power (magnetron cooling fan and mode stirrer)
remains on for three minutes.

NOTE: The RF power indication is optional on
the C3/C SERIES model oven.

Diagnostic Display

The DIAG key turns on or off the diagnostic
display feature. This feature adds temperature
displays to the menu group screens.

While cooking, cook setting parameters are
displayed when diagnostics are enabled.

With diagnostics enabled, status indicators are
displayed on the lower left of the display. Each
indicator is a letter, which is displayed in a
positive sense when the status condition is on.
The letter is reversed when the condition is off.

Status Indicators
There are eight status indicators:

• P - Cook door primary interlock switch

• S - Cook door secondary interlock switch

• M - Cook door monitor interlock switch

• t - Magnetron over temperature switch

• h - Heater turn on command

• H - Heater current detected

• A - Blower motor speed control “run” status

• W - Magnetron current detected

Example: When the status indicator is
highlighted, for example M, the status is open or
null. In this case, the Monitor switch is in the
Open State.

Serial Number

NOTE: This should only be needed when
installing a new control. The S/N is located on the
back of the oven OR behind the bottom access
panel.

The first press of the S/N key displays the oven’s
seven-digit serial number. Use the following
procedure to enter the serial number.

1. Press the S/N key again to enter the edit
mode.

2. Right and left arrow key appear on either
side of the serial number. These arrows are
used to navigate within the text. Use the top
left SOFT KEY to move the cursor to the left.

5-2

DIAG

TEST C3ADV

CC 81

F HX 500

F

2nd Screen: Test Mode

CCC

PIN

F/C

ELEC

IAF

P S M

t

h H A W

BLOWER

TEST C3ADV

CC 81

F HX 500

F

1st Screen: Test Mode

FAULTS

STEST

HEATER

MGTRON

S/N

P S M

t

h H A W

3. Use the top right SOFT KEY to move the
cursor to the right.

4. Use the NUMERIC KEYPAD to change the
digits as follows:

A) Press the key once to enter the number.

B)

Press

the key twice to enter the first letter.

C) Press the key three times to enter the

second letter.

D) Press the key four times to enter the third

letter.

E) Press the key five times to enter the

fourth letter; if applicable.

5. Press the ENTER KEY to store the new
number.

Cook Cycle Count

The CCC key displays the cook cycle count. The
count is incremented when the cook process
completes at least the first event. The count
includes test cooks selected while in the edit
function. To reset the count, press the zero “0”
key.

PIN Number

The PIN key is used to enter a new personal
identification number (password) for accessing
the edit function. When the button is pressed the
display reads:

ENTER PIN _ _ _ _

Use the numeric keypad to enter the new PIN.
Only numbers are applicable for the PIN.

Temperature Units

The F/C key alternately selects Fahrenheit or
Celsius for temperature displays.

Cook Fault Counter

The FAULTS or FF key is used to read and reset
the oven cook fault counters. Press the 0 key to
reset the fault counter displayed. On ovens with
FF repeat pressing the FF button to view all six
fault counters. The faults include:

•

BLOWER STATUS

controller)

• LOW COOK TMP (cooking temperature)

• LOW MAG CURR (microwave current)

• LOW MAG FLUC (rf power fluctuations)*

• MAG OVER TMP (magnetron over

temperature switch)

• ELEC OVR TMP (electronics compartment
over temperature detection)

• DOOR MONITOR: (cook door monitor
switch out of sequence)*

* NOTE: The C3/C model and late model C3/AB
oven will have the LOW MAG FLUC error
message replaced by the DOOR MONITOR error
message.

(blower motor speed

Idle Airflow

The first press of the IAF key displays the
selected idle airflow. Subsequent presses of the
IAF button increment the idle airflow in 10% steps
from 20% to 50%. When the idle airflow is 50%,
the next press sets the airflow to 20%. All ovens
are factory set at 30%.

O

O

O

O

O

5-3

TEST

TurboChef Technologies, Inc. C Series

5-2