Sub-Zero 700-2 Series, 700TR-2, 700TF-2, Integrated Series, 700TFI-2 Service Manual
...
subzero.com 800.222.7820
700
Service Manual
General Information 2
Installation Information 7
Controls & Operation 10
Sealed System 54
Air Flow & Fan Blade Spacing 62
Icemaker Information 64
Component Access & Removal 68
Troubleshooting Guide 107
Technical Data 141
Wiring Diagrams 147
General Information
Integrated (
Integrated (
700-
700-
2) Series
2) Series
1-2
#3756780 - Revision D - July, 2005
INTRODUCTION
This Sub-Zero Intigrated (700-2) Series Technical Service Manual (Job Aid Part #3756780) has been compiled to
provide the most recent information on safety, installation, set-up, design, operation, features, troubleshooting, wiring
diagrams, and repair procedures for the Intigrated (700-2) Series units. This information will enable the service technician to troubleshoot and diagnose malfunctions, perform necessary repairs, and return an Intigrated (700-2) Series
unit to proper operational status.
The service technician should read the complete instructions contained in thismanual before initiating any repairs.
IMPORTANT SAFETY INFORMATION
Below are Product Safety Labels used in this manual.
The "Signal Words" used are WARNING or CAUTION.
When reviewing this manual, please note these different Product Safety Labels placed at the beginning of
certain sections of this manual. You must follow the
instructions given in the boxes of the Product Safety
Labels in order to avoid personal injury and/or product
damage.
The sample Product Safety Labels below illustrate the
precautions that should be taken when the signal word
is observed.
INDICATES THAT HAZARDOUS OR UNSAFE
PRACTICES COULD RESULT IN SEVERE PERSONAL INJURY OR DEATH.
Indicates that hazardous or unsafe practices could
result in minor personal injury, and/or product
damage, and/or property damage.
In addition, please pay attention to the signal word
“NOTE”, which highlights information that is especially
important for the topic being covered.
This manual is designed to be used by Authorized Service Personnel only. Sub-Zero Freezer Co., Inc.
assumes no responsibility for any repairs made on Sub-Zero refrigeration units by anyone other than
Authorized Service Technicians.
Information and images contained in this manual are the copyright property of Sub-Zero Freezer Company, 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 Sub-Zero Freezer Company, Inc.
© Sub-Zero Freezer Company, Inc, all rights reserved.
TECHNICAL ASSISTANCE
If you should have any questions regarding the 700
Series and/or this manual, please contact:
Sub-Zero Freezer Company, Inc.
ATTN: Service Department
P.O. Box 44988
Madison, WI 53744 - 4988
Customer Service & Parts / Warranty Claims
Phone #: (800) 222 - 7820
Technical Assistance
Phone #: (800) 919 - 8324
Customer Service & Technical Assistance
Facsimile #: (608) 441 - 5887
Parts / Warranty Claims
Facsimile #: (608) 441 - 5886
Service Department E-Mail Address:
customerservice@subzero.com
Office Hours:
7:00 AM to 7:00 PM Central Time
Monday through Friday
General Information
Integrated (
Integrated (
700-
700-
2) Series
2) Series
1-6
#3756780 - Revision D - July, 2005
WARRANTY INFORMATION
This page contains a summary of the 2, 5 & 12 Year
Warranty that is supplied with every 700-2 Series unit.
This is followed by a summary of the two special warranties: The Non-Residential Warranty which applies to
units installed in non-residential applications, and the
Display/Model Home Warranty which applies to distributor or dealer’s display units and units in model homes,
sold three years after date of manufacture. The last
entries on this page are details and notes about the
warranties.
TWO, FIVE & TWELVE YEAR Warranty Summary
• Two year TOTAL PRODUCT warranty, *parts and
labor.
• Five Year SEALED SYSTEM warranty, **parts and
labor.
• Sixth through Twelfth year LIMITED SEALED SYSTEM warranty, sealed system **parts only.
ONE & FIVE YEAR Non-Residential Warranty
Summary (Example: Office, Yacht, etc.)
• One Year TOTAL PRODUCT warranty, *parts and
labor.
• Five year LIMITED SEALED SYSTEM warranty,
sealed system **parts only.
ONE & FIVE YEAR Display/Model Home Warranty
Summary (Display units sold three years after date
of manufacture)
• One Year TOTAL PRODUCT warranty, *parts and
labor.
• Five year LIMITED SEALED SYSTEM warranty,
sealed system **parts only.
Warranty Details:
• * Total Product Parts includes, but is not limited to the
following:
Electronic Control System Components, Fan & Light
Switches, Fan Motors & Blades, Defrost & Drain
Heaters, Defrost Terminators, Drain Pans, Drain Tubes,
Wiring, Light sockets & bulbs, Icemakers, Water
Valves, Door hinges, Door closers & Cams,
Compressor Electricals, etc. . .
• ** Sealed System Parts include the following:
Compressors, Condensers, Evaporators, Filter-Driers,
Heat-exchangers, All Tubing That Carries the Freon.
NOTE: Condenser Fan Motors, Freon, Solder and
compressor electricals are NOT
considered sealed
system parts.
Warranty Notes:
• All warranties begin at the time of the unit's initial
installation.
• All Warranty and Service information collected by SubZero is arranged and stored under the unit serial number.
This information is now also stored under the customer's
last name.
NOTE: Sub-Zero still requests that you have the model
and serial number available whenever contacting the factory or parts distributor.
• The serial number tag is located on the left side wall of
the upper drawer compartment. (See Figures 1-1, for
serial tag layout)
700TCI 2 0000000
7.0
9.0 8.1 R134a
Figure 1-1. Serial Tag Layout
(The serial number tag is located on the left side wall of the upper drawer compartment.)
Jul 2000
Model Number
Serial Number
Manufacture Date
Refrigerant Charge
Total Amps Refrigerant Type
MODEL
FREEZER CO., INC.
REFRIGERATOR
PRODUCT SERVICE 1-800-222-7820
FREEZER
LISTED HOUSEHOLD
REFRIGERATOR OR FREEZER
MADISON, WI
SERIAL NUMBER
TOTAL AMPS
115Vac, 60Hz, 1 Phase
REFRIGERANT
U
R
O
CUS
LISTED
776N
Date Code
ALSO VERIFIED IN
ACCORDANCE WITH
ENERGY STANDARD
CAN/CSA-C300-91
L
General Information
Integrated (
Integrated (
700-
700-
2) Series
2) Series
1-7
#3756780 - Revision D - July, 2005
MODEL DESCRIPTIONS
The following pages briefly describe the models covered in this manual. Though there are models with and without
icemaker, for the purposes of this manual, only the refrigerator models and the models with icemakers we will
addressed in the succeeding sections.
Model 700TC-2 (Figure 1-2)
700 Series
Tall Combo
(Combination Refrigerator / Freezer with Two
Temperature Zones - Upper Refrigerator over
Two Drawer Freezer)
2nd Design Build
(Unit is 80” H x 27” W x 24” D)
Model 700TCI-2 (Figure 1-2)
700 Series
Tall Combo
(Combination Refrigerator / Freezer with Two
Temperature Zones - Upper Refrigerator over
Two Drawer Freezer)
Ice maker Included
2nd Design Build
(Unit is 80” H x 27” W x 24” D)
Figure 1-2. Model 700TC-2 & 700TCI-2
Upper
Refrigerator
Two Drawer
Freezer
General Information
Integrated (
Integrated (
700-
700-
2) Series
2) Series
1-8
#3756780 - Revision D - July, 2005
Model 700TR-2 (Figure 1-3)
700 Series
Tall Refrigerator
(All Refrigerator with Two Temperature Zones - Upper
Refrigerator over Two Drawer Refrigerator)
2nd Design Build
(Unit is 80” H x 27” W x 24” D)
Figure 1-3. Model 700TR-2
Upper
Refrigerator
Two Drawer
Refrigerator
Model 700TF-2 (Figure 1-4)
NOTE: This model is replaced by the 700TF-2V as of
serial #1898164 (see following page).
700 Series
Tall Freezer
(All Freezer with One Temperature Zone - Upper
Freezer Section over Two Drawer Freezer Section)
2nd Design Build
(Unit is 80” H x 27” W x 24” D)
Model 700TFI-2 (Figure 1-4)
NOTE: This model is replaced by the 700TFI-2V as of
serial #1898164 (see following page).
700 Series
Tall Freezer
(All Freezer with One Temperature Zone - Upper
Freezer Section over Two Drawer Freezer Section)
Ice maker Included
2nd Design Build
(Unit is 80” H x 27” W x 24” D)
Figure 1-4. Model 700TF-2 & 700TFI-2
Upper
Freezer
Section
Two Drawer
Freezer
Section
General Information
Integrated (
Integrated (
700-
700-
2) Series
2) Series
1-9
#3756780 - Revision D - July, 2005
Model 700TF-2V (Figure 1-5)
NOTE: This model replaced the 700TF-2 as of serial
#1898164.
700 Series
Tall Freezer
(All Freezer with One Temperature Zone - Upper
Freezer Section over Two Drawer Freezer Section)
2nd Design Build
Variable Speed Compressor
(Unit is 80” H x 27” W x 24” D)
Model 700TFI-2V (Figure 1-5)
NOTE: This model replaced the 700TFI-2 as of serial
#1898164.
700 Series
Tall Freezer
(All Freezer with One Temperature Zone - Upper
Freezer Section over Two Drawer Freezer Section)
Ice maker Included
2nd Design Build
Variable Speed Compressor
(Unit is 80” H x 27” W x 24” D)
Figure 1-5. Model 700TF-2V & 700TFI-2V
Upper
Freezer
Section
Two Drawer
Freezer
Section
General Information
Integrated (
Integrated (
700-
700-
2) Series
2) Series
1-10
#3756780 - Revision D - July, 2005
Model 700BR-2 (Figure 1-6)
700 Series
Base Refrigerator
(All Refrigerator with Two Temperature Zones - Upper
Drawer and Lower Drawer)
2nd Design Build
(Unit is 80” H x 27” W x 24” D)
Figure 1-6. Model 700BR-2
Upper
Refrigerator
Zone
Model 700BF-2 (Figure 1-7)
700 Series
Base Freezer
(All Freezer with One Temperature Zone for Both
Drawers)
2nd Build Design
(Unit is 34” H x 27” W x 24” D)
Model 700BFI-2 (Figure 1-7)
700 Series
Base Freezer
(All Freezer with One Temperature Zone for Both
Drawers)
Ice maker Included
2nd Build Design
(Unit is 34” H x 27” W x 24” D)
Lower
Refrigerator
Zone
Freezer
Drawers
Figure 1-7. Model 700BF-2 & 700BFI-2
Installation Information
Integrated (
Integrated (
700-
700-
2) Series
2) Series
2-2
#3756780 - Revision D - July, 2005
UNIT COULD TIP FORWARD UNDER CERTAIN LOAD CONDITIONS. FAILURE TO INSTALL ANTI-TIP COMPONENTS AND EXTEND LEVELERS TO THE FLOOR ACCORDING TO INSTALLATION MANUAL COULD
RESULT IN SERIOUS PERSONAL INJURY OR DEATH.
INSTALLATION CONSIDERATIONS
This section covers some of the more common installation issues seen by a service technician. An improper installation, though not a valid service issue, has the potential to lead to a customer placing a call for service. Installation
related customer complaints could include, but are not limited to: Unit leveling, unit movement, door misalignment,
doors and drawers not sealing, internal frost or condensation, warm compartment temperatures, exterior condensation, etc.. .
NOTE: If additional installation information is needed, refer to the complete Installation Manual and/or installation
video, or contact the Sub-Zero Technical Assistance Department.
Unit Leveling
NOTE: The kickplate/grille must be removed before
leveling (See Figure 2-1). If the unit has already been
anchored to the cabinets, the side molding strips must
be removed and the anchor screws must be extracted
from the unit to cabinet brackets before leveling (See
Figure 2-2). These components must be reinstalled
after leveling.
Figure 2-2. Side Molding & Bracket
Figure 2-1. Kickplate/Grille Removal
Figure 2-3. Adjusting Front Levelers
To level the unit, turn the front leveling legs counterclockwise to raise the front or clockwise to lower it. To
assist in turning the front leveling legs up or down, use
a standard straight-blade screwdriver and place it in the
foot of the front leg, then rotate the leveler foot in the
desired direction (See Figure 2-3).
Kickplate / Grille
Installation Information
Integrated (
Integrated (
700-
700-
2) Series
2) Series
2-3
#3756780 - Revision D - July, 2005
Figure 2-4. Adjusting Rear Levelers
Figure 2-5. 90° Door Stop Cam
Screwdriver
90° Stop Cam
The rear levelers are adjusted from the front of the
base by turning the Phillips head adjusting screw. The
long adjusting screw reaches all the way to the rear leveler assembly. Turn the screw clockwise to raise the
rear or counterclockwise to lower it (See Figure 2-4).
NOTE: The rear leveling legs will only move 1/16” for
every 18 revolutions of the Phillips head screw. Do not
over torque. Use the lowest torque setting on any
power screwdriver. Do not turn rear leveling legs by
hand, doing so will damage the assembly.
Door and Drawer Adjustment
The doors and drawers on 700-2 Series units are nonadjustable. Instead, the door and/or drawer panels
must be adjusted if there is an alignment problem.
Refer to the Installation Manual and/or installation video
for panel installation and adjustment.
NOTE: The unit must be level before attempting to
adjust the door and drawer panels.
NOTE: If the door has problems closing, see Tall Unit
Door Hinge Operation Test Procedures and Corrections
at the end of the Troubleshooting Guide.
Door Stop Adjustment
700-2 Series tall units have a 90° door stop cam built
into the hinge system. The 90° door stop cam is located in the center portion of each hinge. To adjust it, use
a standard straight-blade screwdriver to rotate the cam
until it reaches the stop point (See Figure 2-5).
NOTE: You must
make this adjustment at both bottom
and top hinge.
Installation Information
Integrated (
Integrated (
700-
700-
2) Series
2) Series
2-4
#3756780 - Revision D - July, 2005
Dual Unit Installations
• If two Tall units are installed side by side and are 2”
or less apart, part #TTDUAL should be utilized.
(See Figure 2-6)
• If two Base units are installed side by side and are
2” or less apart, part #BBDUAL should be utilized
• If a Tall unit is installed next to a Base unit and they
are 2” or less apart, part #BBDUAL should be utilized.
Complete installation instructions are supplied with the
#BBDUAL and #TTDUAL packages.
If two or more units are placed side by side and are
2” or less apart, a dual unit heater package must be
applied to the left side of the right hand unit.
Failure to install the dual unit heater package could
result in exterior condensation between the units.
Figure 2-6. Dual Unit Heater (#TTDUAL Shown)
Apply heater
to left side of
right hand
unit
Electronic Control
Integrated (
Integrated (
700-
700-
2) Series
2) Series
3-1
#3756780 - Revision D - July, 2005
SECTION 3
ELECTRONIC CONTROL
SYSTEM INFORMATION
NOTE: The Electronic Control System used in an
Integrated (700-2) Tall Unit differs from the Electronic
Control System used in a Integrated (700-2) Base
Unit. For
this reason, Section 3 is divided into two parts. The first
part pertains to the Control System in T
all Units. The sec-
ond part pertains to the Control System in Base Units.
Electronic Control
Integrated (
Integrated (
700-
700-
2) Series
2) Series
3-2
#3756780 - Revision D - July, 2005
T
erm/Component Definition / Description
Control Board …………………………..The printed-circuit board (PC Board) contains the microprocessor, relays and
electrical connections which control and monitor all functions and operations
of the unit.
Microprocessor ………………………... An electrical component on the control board which receives electrical signals
from other components, processes that information, then sends an electrical
signal to the relays on the board to open or close, and other electronic components in the unit to switch on or off.
Relay …………………………………… The electrical components on the control board which switch other compo-
nents in the unit ON and OFF when instructed to do so by the microprocessor.
LCD (Liquid Crystal Display) ……...... That part of the control board seen at the control panel which displays com-
partment temperatures, service annunciators, etc. . .
Control Panel Assembly ………………The information input and read-out area of the electronic control system,
located at the top of the upper Compartment.
Membrane Switch …………………….. An integral part of the control panel assembly, which consists of the function
keys used for all input operations to the electronic control system.
Keys (Function Keys) ………………… The buttons on the Membrane switch used for input operations. (The keys
are: UNIT ON/OFF, ALARM ON/OFF, ICE ON/OFF, WARMER, COLDER)
Annunciators …………………………... The words and numbers that are displayed at the control panel assembly.
(Example: Temperature displays, alarm bell indicator, SERVICE indicator, and
ICE system indicator)
Display Units…………………………... The temperatures displayed may be in fahrenheit units of measure (°F) or in
celsius units of measure (°C). A series of key strokes allows this to be
changed back and forth.
Set-Point ……………………………….. The desired compartment temperature, established by pressing the COLDER
or WARMER keys.
High Offset (Cut-in)………………….....As the compartment air temperature cycles up and down, this is the maxi-
mum compartment temperature that the electronic control system will allow
before calling for cooling.
Low Offset (Cut-out)…………………... As the compartment air temperature cycles up and down, this is the minimum
compartment air temperature that the electronic control system will allow
before interrupting cooling.
Thermistor (Temperature Sensor) ….. A resistor with which resistance changes as the temperature around it
changes. For electronic control system purposes, the microprocessor measures this resistance and displays it as a temperature reading at the LCD.
ELECTRONIC CONTROL TERMINOLOGY & COMPONENT DESCRIPTIONS
All Integrated 700-2 Series units utilize an electronic control system. The electronic control system monitors, regulates and controls a variety of functions. The electronic control system also displays temperature readings, ice
maker system operation, possible problems with the unit and door ajar alarm status. The table below defines some
basic electronic control system terminology and describes some of the electronic control system components. An
understanding of the following information is needed in order to comprehend the input operations and functions of
the electronic control system.
Electronic Control
Integrated (
Integrated (
700-
700-
2) Series
2) Series
3-3
#3756780 - Revision D - July, 2005
BASIC 700- 2 TALL UNIT ELECTRONIC CONTROL SYSTEM
Input operations for the electronic control system are performed at the control panel (located at the top of the upper
compartment), with monitoring, regulating and controlling functions taking place at the control board (located directly
behind the control panel). Temperatures and possible problems with the unit are illuminated in the control panel at
the LCD. This page illustrates a basic 700 Series electronic control system (Model 700TCI-2 used, See Figure 3-1).
The entire electronic control system is described in greater detail on the following pages.
Figure 3-1. Basic 700TCI-2 Electronic Control System Diagram
ALARM BELL
COND
FAN
R
FILL TUBE
HEATER
RRRR
RR R
FRE CMPRTMNT
THERMISTOR
CONTROL BOARD
LCD
FRE EVAP
THERMISTOR
DEFROST
HEATER
L1
115 VOLTS
60 CYCLES
MICROPROCESSOR
CONTROL PANEL / MEMBRANE SWITCH
FREEZER
BOARD CONFIGURING
RESISTORS
REF EVAP
THERMISTOR
REF CMPRTMNT
THERMISTOR
NEUT
WARMERCOLDER
DEFROST MONITOR LINE
WARMERCOLDER
REFRIGERATOR
LIGHT
SWITCH
SOL. MONITOR LINE
DEFROST TERMINA T OR
ICE
ON/OFF
ON/OFF
DOOR AJAR
MONITOR LINE
WATER
SOLENOID
ICEMAKER
LIGHTS
ON/OFF
UNIT
REFRIG
COMP
FREEZER
FREEZER
COMP
EVAP FAN
REFRIG
EVAP FAN
Electronic Control
Integrated (
Integrated (
700-
700-
2) Series
2) Series
3-4
#3756780 - Revision D - July, 2005
Figure 3-2. 700-2 Tall Unit Control Board Layout
Figure 3-3. 700-2 Tall Unit Control Board Summary Table (700TC/I-2 Summary Table Shown)
700-2 TALL UNIT CONTROL BOARD LAYOUT AND SUMMARY TABLE
The electrical connection points on the 700-2 tall unit control board are labeled alphanumerically. These labels correspond with the alphanumeric control board summary table, located on all 700 Series wiring diagrams. By referencing the summary table, it is possible to identify which components are connected at which connection points on
the control board. Below is a layout diagram of the control board, and a copy of a summary table. (See Figures 3-2
and 3-3)
NOTE: All components on the control board are non-replaceable. If a problem with the control board is identified,
the complete control board must be replaced.
LCD (DISPLAY)
CIRCUIT
E2
DEF HTR
E7
E10
E6
J7-1 C FAN
J7-2
J7-3
J7-4
J7-5
J7-6
J7-7
J7-8
J4-1
J4-2
J4-3
J4-4
J4-5
LOW VOLTAGE THERMISTOR CIRCUITS
J1-1
J1-2
J1-3
J1-4
J1-5
J1-6
J1-7
J1-8
FCOMP
L1
RCOMP
E FAN
IACC
LITES
ICE
NEU
F DR
R DR
EVAP FRZ
EVAP FRZ
EVAP REF
EVAP REF
REF
REF
FRZ
FRZ
DESCRIPTION
120 VOLT CIRCUITS
DEFROST HEATER
FRZ COMPRESSOR
POWER IN
REF COMPRESSOR
CONDENSER FAN
NOT USED
ICE MAKER ACC (FILL TUBE)
LIGHTS
ICE MAKER POWERS ICE MAKER
NOT USED
NOT USED(NO PIN)
NEUTRAL
DRAWER LIGHTS SENSE
DOOR LIGHTS SENSE
NOT USED(NO PIN)
DEF SENSOR
ICE MAKER VALVE SENSOR
FRZ EVAP
FRZ EVAP
REF EVAP
REF EVAP
REF COMPARTMENT
REF COMPARTMENT
FRZ COMPARTMENT
FRZ COMPARTMENT
J5
PIN 1
PIN 1
BOARD CONFIGURING
RESISTORS
J7
E7 E10 E6E2
PIN 1
J4
J3
PIN 1
J2
PIN 1
J1
PIN 1
CONTROL BOARD SUMMARY
FUNCTION COLOR
POWERS DEFROST CIRCUIT
POWERS FRZ COMPRESSOR (DRAWERS)
POWER INTO BOARD
POWERS REF COMPRESSOR (DOOR)
POWERS CONDENSER FAN
POWERS FILL TUBE HEATER AND ACCESSORIES
POWERS LIGHTS
NEUTRAL INTO BOARD
SENSES IF EITHER DRAWER OPEN
SENSES IF DOOR OPEN
SENSES WHEN DEF HEATER SHUTS OFF
SENSES WATER VALVE ACTIVATION
SENSES FRZ EVAP TEMP (DRAWERS)
SENSES FRZ EVAP TEMP (DRAWERS)
SENSES REF EVAP TEMP
SENSES REF EVAP TEMP
SENSES REF CABINET TEMP
SENSES REF CABINET TEMP
SENSES FRZ CABINET TEMP (DRAWERS)
SENSES FRZ CABINET TEMP (DRAWERS)
PIN 1
J6
BLUE
PURPLE
BLACK
GRAY
WHITE/RED
WHITE/BLUE
YELLOW
PINK
WHITE
ORANGE
ORANGE
GRAY/WHITE
TAN
ORANGE/RED
BLUE/RED
ORANGE/YEL
BLUE/YELLOW
BLUE/WHITE
BLUE/WHITE
BLUE/BLACK
BLUE/BLACK
Electronic Control
Integrated (
Integrated (
700-
700-
2) Series
2) Series
3-5
#3756780 - Revision D - July, 2005
UNIT
ICE
WARMER
COLDER
REFRIGERATOR
ON/OFF
ON/OFF
ON/OFF
WARMER
COLDER
FREEZER
ICE
SERVICE
OFF
700-2 TALL UNIT CONTROL PANEL LAYOUT
Please note that in the first part of this section, an illustration of the 700TC/I-2 control panel is used most often.
(See Figure 3-4)
Figure 3-4. 700-2 Tall Unit Control Panel Layout (700TC/I-2 Control Panel Shown)
WHEN IN OFF MODE, 115 VOLTS AC IS STILL PRESENT AT CONTROL BOARD!
UNIT
ICE
WARMER
COLDER
REFRIGERATOR
ON/OFF
ON/OFF
ON/OFF
WARMER
COLDER
FREEZER
Figure 3-5. 700-2 Tall Unit ON/OFF, Press UNIT ON/OFF Key
BASIC 700-2 TALL UNIT ELECTRONIC CONTROL INPUT OPERATIONS
Following are illustrations which show the basic input operations performed at the 700-2 tall unit control panel.
Switching the unit ON and OFF, adjusting the set-point (temperature adjustments), switching the ice maker system
ON and OFF, and enabling and disabling the door ajar alarm feature will be explained. Please note that the 700TC/I-
2 control panel is used for most illustrations of the control panel, and in most cases Fahrenheit readings are shown.
Unit ON/OFF
All Integrated 700-2 Series units are shipped in the OFF Mode and when power is supplied to the unit, a trace of the
word “OFF” is visible on the LCD. By pressing and releasing the UNIT ON/OFF key, (See Figure 3-5.) power is
allowed past the control board to the rest of the unit. This will be indicated by the unit lights and LCD at the control
panel illuminating.
NOTE: Whenever the unit is switched off using the the UNIT ON/OFF key, a trace of the word “OFF” will be visible
on the LCD as long as there is power to the unit.
UNIT
ON/OFF
KEY
DOOR / DRAWER
AJAR
ALARM
ON/OFF
KEY
ICEMAKER SYSTEM
ON/OFF
KEY
(Not present on 700TR-2)
REFRIGERATOR
SET-POINT
ADJUSTMENT
KEYS
(Upper door section on 700 TR-2)
(Not present on 700TF/I-2 or 700TF/I-2V)
FREEZER
SET-POINT
ADJUSTMENT
KEYS
(Lower Drawer section on 700TR-2)
LCD
Liquid
Crystal
Display
SERVICE
ICE
Jake Dog was here
OFF
FREEZER
COLDER
WARMER
COLDER
WARMER
REFRIGERATOR
ICE
ON/OFF
ON/OFF
ON/OFF
UNIT
FREEZER
COLDER
WARMER
COLDER
WARMER
REFRIGERATOR
ICE
ON/OFF
ON/OFF
UNIT
ON/OFF
Electronic Control
Integrated (
Integrated (
700-
700-
2) Series
2) Series
3-6
#3756780 - Revision D - July, 2005
Adjusting Set-Point (Temperature Adjustment)
To adjust the set-points, press the appropriate compartment WARMER or COLDER key on the control panel in multi
-
ple key strokes
until the desired set-point is achieved. One key stroke equals a one degree (Fahrenheit or Celsius)
change. (See Figure 3-6)
NOTE: Temperature ranges are -5°F (-21°C) to +5°F (-15°C) in freezer compartment, with an initial set-point of
0°F (-18°C), and +34°F (+1°C) to +45°F (+7°C) in refrigerator compartment, with an initial set-point of +38°F (+3°C).
NOTE: When checking set-points, remember that the initial key stroke of the WARMER or COLDER key will change
the previous set-point by one degree (Fahrenheit or Celsius).
NOTE: The set-point will be displayed on the LCD for 10 seconds after the last WARMER or COLDER key stroke.
After the 10 second delay, the compartment temperature will be displayed. As the compartment temperature
changes, the temperature displayed on the LCD will change, by no more than one degree per minute.
UNIT
ICE
WARMER
COLDER
REFRIGERATOR
ON/OFF
ON/OFF
ON/OFF
WARMER
COLDER
FREEZER
Figure 3-6. Adjusting the Set-Point - Press WARMER or COLDER Key In Multiple Key Strokes
Icemaker System ON/OFF
All Integrated 700-2 Series units are shipped with the icemaker system switched of
f. By pressing and releasing the
ICE ON/OFF key on the control panel, power is allowed to the icemaker system, and “ICE” is displayed on the LCD.
(See Figure 3-7) To deactivate the icemaker system, press and release the ICE ON/OFF key again and the “ICE”
annunciator will disappear from the LCD indicating the icemaker system is of
f.
NOTE: When the unit is in “Sabbath Mode,” the icemaker system is de-energized. Sabbath Mode will be explained
in UNIQUE ELECTRONIC CONTROL SYSTEM INPUT OPERATIONS.
Figure 3-7. Icemaker System ON/OFF - Press ICE ON/OFF Key
ICE
UNIT
ICE
WARMER
COLDER
REFRIGERATOR
ON/OFF
ON/OFF
ON/OFF
WARMER
COLDER
FREEZER
Door Ajar Alarm Bell ON/OFF
All Integrated 700-2 Series units are equipped with a door ajar alarm feature. When activated the alarm will alert a
customer if a door or drawer is left or stuck open. To enable the door ajar alarm feature, press and release the door
ajar alarm bell ON/OFF key on the control panel. A bell annunciator will illuminate on the LCD indicating the alarm
feature is active (See Figure 3-8). Now, if a door or drawer is open for 30 seconds (See “NOTE” in Figure 3-8), the
bell annunciator will flash and the audible alarm will beep. To disable the door ajar alarm, simply press the door ajar
alarm bell ON/OFF key and the bell annunciator on the LCD will disappear, indicating the alarm feature is of
f.
Figure 3-8. Door Ajar Alarm ON/OFF, Press Alarm Bell ON/OFF Key
UNIT
ICE
WARMER
COLDER
REFRIGERATOR
ON/OFF
ON/OFF
ON/OFF
WARMER
COLDER
FREEZER
FREEZER
COLDER
WARMER
COLDER
WARMER
REFRIGERATOR
ICE
ON/OFF
ON/OFF
UNIT
ON/OFF
ICE
FREEZER
COLDER
WARMER
COLDER
WARMER
REFRIGERATOR
ICE
ON/OFF
ON/OFF
UNIT
ON/OFF
FREEZER
COLDER
WARMER
COLDER
WARMER
REFRIGERATOR
ICE
ON/OFF
ON/OFF
UNIT
ON/OFF
Electronic Control
Integrated (
Integrated (
700-
700-
2) Series
2) Series
3-7
#3756780 - Revision D - July, 2005
FUNCTIONS OF 700 TALL UNIT ELECTRONIC CONTROL SYSTEM
The following few pages explain the monitoring, regulating and controlling functions of the electronic control system.
Signal trace schematic illustrations for the model 700TC/I-2 are used to demonstrate current flow for the function
being explained.
NOTE: Only normal operating electronic control functions are described along with problems which could cause
error annunciators. All possible malfunctions are addressed in the Troubleshooting Guide.
Supply Power to the Lighting System
115 Volts are supplied to the lighting system through the control board when the unit is switched on
by pressing the
UNIT ON/OFF key. (See Figure 3-9.)
NOTE: Disabling the lighting system (Sabbath Mode) is covered in Unique Electronic Control Input Operations.
Figure 3-9. 700TC/I-2 Signal Trace Schematic of Lighting System
115 Volts are supplied
through J7 to lighting system
unless unit is switched OFF
or is in Sabbath Mode
NOTE:
Door Ajar Sense Lines
HIGH VOLTAGE
115 VOLTS
BLACK
WHITE
L1
60 CYCLES
NEUT
WHITE
M
J5
E2 E7 E10 E6
J3
J6
J7
J4
J1
J2
M
M
M
ORANGE
ORANGE
REFRIGERATOR
LIGHT SWITCH
ORANGE
ORANGE
FREEZER
LIGHT
SWITCHES
ORANGE
ORANGE
LIGHT
TERMINATOR
M
REFRIGERATOR
LIGHTS
FREEZER
LIGHTS
Electronic Control
Integrated (
Integrated (
700-
700-
2) Series
2) Series
3-8
#3756780 - Revision D - July, 2005
Monitor, Regulate and Display Compartment Temperatures (700TC/I-2, 700TR-2 and 700TF/I-2)
In the models 700TC/I-2, 700TR-2 and 700TF/I-2, the temperature signal from the thermistor in the refrigerator
and/or freezer compartment is monitored by the microprocessor and then displayed on the LCD. Though the compartment air temperature does fluctuate, the LCD displays the average temperature (See Figure 3-10). When the
compartment temperature reaches high offset, the microprocessor supplies power to the compressor and evaporator
fan (See Figure 3-11). As the compressor and evaporator fan run, the compartment temperature drops. When the
compartment temperature reaches low offset, the microprocessor interrupts power to the compressor and evaporator
fan, cycling them off.
NOTE: If the average compartment temperature changes, the temperature displayed on the LCD will change by one
degree per minute.
Figure 3-10. Average Compartment Temperature Displayed
UNIT
ICE
WARMER
COLDER
REFRIGERATOR
ON/OFF
ON/OFF
ON/OFF
WARMER
COLDER
FREEZER
Compartments
calling for cooling
(Temp. above high offset)
Compressors and
evaporator fans
energized
Figure 3-11. 700TC/I-2 Signal Trace Schematic (High & Low Voltage) of Regulating Temperatures
HIGH VOLTAGE
J5
E2 E7 E10 E6
J3
J2
WARMER
FREEZER
COLDER
WARMER
COLDER
LOW VOLTAGE
DISPLAY
J5
0
PIN 1
PIN 1
J7
0
E2 E6E10E7
J3
PIN 1
PIN 1PIN 1
J2
0
L1
BLACK
WHITE
J6
J7
J4
J1
GRAY
0
115 VOLTS
60 CYCLES
PURPLE
J1
0
J6
0
PIN 1
PIN 1
0
J4
NEUT
MEMBRANE SWITCH
BLUE W/WHITE STRIPE
BLUE W/WHITE STRIPE
BLUE W/BLACK STRIPE
BLUE W/BLACK STRIPE
WHITE
REFRIGERATOR
FAN SWITCH
REFRIGERATOR
COMPRESSOR
M
REFRIGERATOR
OVERLOAD
PROTECTOR
FREEZER
OVERLOAD
PROTECTOR
FREEZER
PURPLE RED
SWITCHES
COMPRESSOR
M
FAN
REF CAB
THERMISTOR
FZR CAB
THERMISTOR
RED
FREEZER
REFRIGERATOR
REFRIGERATOR
FAN MOTOR
M
RUNNING
CAPACITOR
(WHEN USED)
STARTING
RELAY
RUNNING
CAPACITOR
(WHEN USED)
STARTING
RELAY
FREEZER
FAN MOTOR
M
ICE
ON/OFF
ON/OFF
UNIT
ON/OFF
M
Electronic Control
Integrated (
Integrated (
700-
700-
2) Series
2) Series
3-9
#3756780 - Revision D - July, 2005
Control Variable Speed Compressor (700TF/I-2V)
Like other tall units, the temperature signal from the thermistor in a 700TF/I-2V freezer compartment is monitored by
the microprocessor and then displayed on the LCD, and when cooling is called for, the evaporator fan and condenser fan are energized. But, in a model 700TF/I-2V an additional component, the compressor controller, is used to
control the variable speed compressor. How this works is, the temperature difference between the compartment
thermistor and the set-point is monitored by the microprocessor to determine the appropriate speed signal which is
then sent via a low voltage line to the compressor controller. The compressor controller supplies a 230 volt AC, 3phase, 50 - 150 Hz signal, based on the speed signal from the microprocessor, to the compressor. This signal causes the compressor to run at varying speeds. (See Figure 3-12) Speed commands will vary at 0, 1600, 1700, 1800,
2100, 2200, 2400, 2700, 3600 and 4000 RPM, depending on compartment temperature and set-point.
NOTE: In the model 700TF/I-2V, the compressor, evaporator fan and condenser fan will run a great majority of the
time. This is normal. These components will only cycle off during defrost and may also cycle off for short periods of
time if the ambient temperature is low enough.
Figure 3-12. 700TF/I-2V Signal Trace Schematic of Variable Speed Compressor Operation
VOLTAGE EXCEEDING 200 VOLTS MAY BE PRESENT AT COMPRESSOR & COMPRESSOR CONTROLLER!
1. Compartment
temperature
monitored by
microprocessor
3. Low voltage
speed signal sent
from microprocessor to controller, based on
difference
between compartment temperature
and set-point
4. Controller supplies
230 volt AC, 3-phase,
50 - 150 Hz signal
(based on the speed
signal from microprocessor), to compressor.
2. 115 Volts AC supplied to
controller, evaporator
fan, and condenser fan
when cooling is required.
NOTE: con-
troller also
sends signal
back to microprocessor
indicating
compressor
speed status.
HIGH VOLTAGE
J5
E2 E7 E10 E6
J3
J2
LOW VOLTAGE
V SPEED
CONTROL
BOX
PINK W/BLACK
PINK W/RED
YELLOW W/RED
YELLOW W/BLACK
115 VOLTS
60 CYCLES
L1
BLACK
WHITE
J6
PURPLE
J7
J4
J1
DISPLAY
J5
PIN 1
PIN 1
J7
E2 E6E10E7
J3
PIN 1
J2
PIN 1 PIN 1
J1
J4
NEUT
J6
PIN 1
PIN 1
CONDENSER
FAN MOTOR
WHITE
MEMBRANE SWITCH
ORANGE W/RED STRIPE
BLUE W/RED STRIPE
BLUE W/BLACK STRIPE
BLUE W/BLACK STRIPE
FRZ EVAP
THERMISTOR
FRZ CAB
THERMISTOR
M
VSPEED
CONTROL
FREEZER
FAN
PURPLE RED
SWITCHES
BOX
BROWN
BLACK
COMPRESSOR
M
FAN MOTOR
M
LT. BLUE
FREEZER
FREEZER
Electronic Control
Integrated (
Integrated (
700-
700-
2) Series
2) Series
3-10
#3756780 - Revision D - July, 2005
Control Condenser Fan Run
The microprocessor senses the 115 volt output supplied to both compressors. If either compressor is running, a signal is sent to the condenser fan relay on the control board to close, supplying power to the condenser fan. If both
compressors are off, the condenser fan is off. (See Figure 3-13)
NOTE: There is only one compressor on the model 700TF/I-2 and 700TF/I-2V. The condenser fan cycles with this sin-
gle compressor. In the model 700TF/I-2V, the condenser fan along with the compressor and evaporator fan will only
cycle off during defrost and may also cycle off for short periods of time if the ambient temperature is low enough.
Figure 3-13. 700TC/I-2 Signal Trace Schematic (High Voltage) of Condenser Fan Operation
Power supplied to
condenser fan
motor if one or
both compressors
are running
HIGH VOLTAGE
115 VOLTS
J5
E2 E7 E10 E6
J3
60 CYCLES
BLACK
J7
J4
J1
J2
L1
WHITE
GRAY
J6
PURPLE
NEUT
WHITE
REFRIGERATOR
FAN SWITCH
REFRIGERATOR
COMPRESSOR
M
REFRIGERATOR
OVERLOAD
PROTECTOR
FREEZER
OVERLOAD
PROTECTOR
FREEZER
FAN
PURPLE RED
SWITCHES
FREEZER
COMPRESSOR
M
RED
REFRIGERATOR
FAN MOTOR
M
RUNNING
CAPACITOR
(WHEN USED)
STARTING
RELAY
RUNNING
CAPACITOR
(WHEN USED)
STARTING
RELAY
FREEZER
FAN MOTOR
M
WHITE/RED
CONDENSER
FAN MOTOR
M
Electronic Control
Integrated (
Integrated (
700-
700-
2) Series
2) Series
3-11
#3756780 - Revision D - July, 2005
Figure 3-15. 700TC/I-2 Signal Trace Schematic (High Voltage) of Compressor Electrical System
Figure 3-16. SERVICE Flashing Possibly Because of Several Excessive Compressor Run Periods Occurring
UNIT
ICE
WARMER
COLDER
REFRIGERATOR
ON/OFF
ON/OFF
ON/OFF
WARMER
COLDER
FREEZER
SERVICE
length of compressor
run time is monitored
by microprocessor.
Monitor Compressor Run Duration, Displays If Service may be Needed (700TC/I-2, 700TR-2 and 700TF/I-2)
The microprocessor in the models 700TC/I-2, 700TR-2 and 700TF/I-2 senses the 115 volt output supplied to the
compressor(s), monitoring the length of compressor run time (See Figure 3-15). If several excessive compressor
run periods occur, a signal is sent to the SERVICE annunciator on the LCD to flash (See Figure 3-16).
NOTE: A flashing SERVICE annunciator can indicate excessive compressor run or a faulty refrigerator evaporator
thermistor. Diagnostic Mode (covered later in this section) should be initiated to narrow the search for possibilities.
This is also covered in the Troubleshooting Guide section of this manual.
NOTE: To clear a flashing SERVICE error annunciator, the problem must be corrected, then the unit must be
switched OFF and back ON.
NOTE: If the unit is ever switched OFF then back ON, the compressors will not energize for at least three minutes.
This three minute minimum OFF time is used to protect the compressor and its electricals.
HIGH VOLTAGE
115 VOLTS
J5
E2 E7 E10 E6
J3
60 CYCLES
L1
BLACK
WHITE
GRAY
J6
PURPLE
J7
J4
J1
J2
NEUT
WHITE
REFRIGERATOR
FAN SWITCH
REFRIGERATOR
COMPRESSOR
M
REFRIGERATOR
OVERLOAD
PROTECTOR
FREEZER
OVERLOAD
PROTECTOR
FREEZER
FAN
PURPLE RED
SWITCHES
FREEZER
COMPRESSOR
M
RED
REFRIGERATOR
FAN MOTOR
M
RUNNING
CAPACITOR
(WHEN USED)
STARTING
RELAY
RUNNING
CAPACITOR
(WHEN USED)
STARTING
RELAY
FREEZER
FAN MOTOR
M
M
SERVICE
FREEZER
COLDER
WARMER
COLDER
WARMER
REFRIGERATOR
ICE
ON/OFF
ON/OFF
UNIT
ON/OFF
Electronic Control
Integrated (
Integrated (
700-
700-
2) Series
2) Series
3-12
#3756780 - Revision D - July, 2005
Monitor and Control “Adaptive Defrost” of Freezer Evaporator
Initially the freezer compressor will cycle-run for twelve hours (twenty-four hours in model 700TF/I-2V), after which
the microprocessor sends the signal to the defrost relay on the control board to close. This supplies power to the
defrost heater, and the compressor is switched off (See Figure 3-15). With the “Adaptive Defrost” technique, the
length of time that the heater actually stays on to defrost the evaporator and satisfy the defrost terminator is
observed by the microprocessor. The microprocessor then determines the number of hours before the next defrost.
If the heater stays on for a shorter time than specified, the microprocessor increases the next defrost interval. If the
heater stays on longer than specified, the electronic control decreases the next defrost interval. This is an ongoing
process whereby the defrost time and the defrost interval will vary by unit use.
NOTE: A five minute time delay/dwell follows all defrosts, except in the model 700TF/I-2V where the delay/dwell is
ten minutes. The drain trough heater is energized during defrost and the delay/dwell period.
NOTE: The minimum defrost interval is six hours; The maximum defrost interval is eighty hours; the maximum
defrost duration is twenty-five minutes.
Figure 3-15. 700TC/I-2 Signal Trace Schematic (High Voltage) of Freezer Adaptive Defrost
Length of defrost time monitored
by microprocessor via defrost
sense line
Drain trough
heater energized
during defrost and
delay/dwell period
HIGH VOLTAGE
115 VOLTS
BLACK
L1
WHITE
60 CYCLES
NEUT
WHITE
M
J5
E2 E7 E10 E6
J3
J6
J7
J4
J1
J2
M
M
M
GRAY/WHITE
BLUE
DEFROST
TERMINATOR
30-38 OHMS
155-175 OHMS
M
DEFROST
HEATER
DRAIN TROUGH
HEATER
Electronic Control
Integrated (
Integrated (
700-
700-
2) Series
2) Series
3-13
#3756780 - Revision D - July, 2005
Figure 3-15. 700TC/I-2 Signal Trace Schematic (High Voltage) of Compressor Electrical System
Figure 3-16. SERVICE Flashing Possibly Because of Several Excessive Compressor Run Periods Occurring
UNIT
ICE
WARMER
COLDER
REFRIGERATOR
ON/OFF
ON/OFF
ON/OFF
WARMER
COLDER
FREEZER
SERVICE
length of compressor
run time is monitored
by microprocessor.
Monitor Compressor Run Duration, Displays If Service may be Needed (700TC/I-2, 700TR-2 and 700TF/I-2)
The microprocessor in the models 700TC/I-2, 700TR-2 and 700TF/I-2 senses the 115 volt output supplied to the
compressor(s), monitoring the length of compressor run time (See Figure 3-15). If several excessive compressor
run periods occur, a signal is sent to the SERVICE annunciator on the LCD to flash (See Figure 3-16).
NOTE: A flashing SERVICE annunciator can indicate excessive compressor run or a faulty refrigerator evaporator
thermistor. Diagnostic Mode (covered later in this section) should be initiated to narrow the search for possibilities.
This is also covered in the Troubleshooting Guide section of this manual.
NOTE: To clear a flashing SERVICE error annunciator, the problem must be corrected, then the unit must be
switched OFF and back ON.
NOTE: If the unit is ever switched OFF then back ON, the compressors will not energize for at least three minutes.
This three minute minimum OFF time is used to protect the compressor and its electricals.
HIGH VOLTAGE
115 VOLTS
J5
E2 E7 E10 E6
J3
60 CYCLES
L1
BLACK
WHITE
GRAY
J6
PURPLE
J7
J4
J1
J2
NEUT
WHITE
REFRIGERATOR
FAN SWITCH
REFRIGERATOR
COMPRESSOR
M
REFRIGERATOR
OVERLOAD
PROTECTOR
FREEZER
OVERLOAD
PROTECTOR
FREEZER
FAN
PURPLE RED
SWITCHES
FREEZER
COMPRESSOR
M
RED
REFRIGERATOR
FAN MOTOR
M
RUNNING
CAPACITOR
(WHEN USED)
STARTING
RELAY
RUNNING
CAPACITOR
(WHEN USED)
STARTING
RELAY
FREEZER
FAN MOTOR
M
M
SERVICE
FREEZER
COLDER
WARMER
COLDER
WARMER
REFRIGERATOR
ICE
ON/OFF
ON/OFF
UNIT
ON/OFF
Electronic Control
Integrated (
Integrated (
700-
700-
2) Series
2) Series
3-14
#3756780 - Revision D - July, 2005
Figure 3-17. 700TF/I-2V Signal Trace Schematic of Compressor Electrical System
3. Microprocessor
monitors speed
commands sent to
compressor controller. If 4000
RPM speed command is observed
continuously and
for extended periods, SERVICE
flashes on LCD.
2. 115 volts AC supplied to
compressor controller
1. High offset temp
reached, calling
for cooling
Monitor Speed Signal of Variable Speed Compressor Controller, Displays If Service may be Needed
(700TF/I-2V)
The microprocessor in the model 700TF/I-2V monitors speed commands it sends to the compressor controller (See
Figure 3-17). If the microprocessor continually sends commands to operate the compressor at highest speed (4000
RPM) for extended periods, a signal is sent to the SERVICE annunciator on the LCD to flash (See Figure 3-16).
NOTE: Speed commands will normally vary at 0, 1600, 1700, 1800, 2100, 2200, 2400, 2700, 3600 and 4000 RPM.
NOTE: Disconnected wires between the controller and J3 on the control board could also cause the SERVICE
annunciator to flash. This will be covered in the Troubleshooting Guide section of this manual.
NOTE: Also see NOTES on preceding page.
HIGH VOLTAGE
J5
E2 E7 E10 E6
J3
J7
J2
LOW VOLTAGE
V SPEED
CONTROL
BOX
J4
J1
BLACK
PINK W/BLACK
PINK W/RED
YELLOW W/RED
YELLOW W/BLACK
L1
WHITE
J6
J5
E2 E6E10E7
J3
115 VOLTS
60 CYCLES
PURPLE
PIN 1
J2
PIN 1
PIN 1
DISPLAY
J7
J4
PIN 1 PIN 1
J1
NEUT
J6
PIN 1
PIN 1
CONDENSER
FAN MOTOR
WHITE
M
FREEZER
FAN
PURPLE RED
SWITCHES
MEMBRANE SWITCH
BLUE W/BLACK STRIPE
BLUE W/BLACK STRIPE
VSPEED
CONTROL
BOX
BROWN
BLACK
FRZ CAB
THERMISTOR
LT. BLUE
FREEZER
COMPRESSOR
M
FREEZER
FAN MOTOR
M
Electronic Control
Integrated (
Integrated (
700-
700-
2) Series
2) Series
3-15
#3756780 - Revision D - July, 2005
Figure 3-18. 700TC/I-2 Signal Trace Schematic (High Voltage) of Icemaker Electrical System
Figure 3-19. ICE & SERVICE Flashing if Icemaker Water Valve Solenoid Energized More Than 15 Seconds
ICE
UNIT
ICE
WARMER
COLDER
REFRIGERATOR
ON/OFF
ON/OFF
ON/OFF
WARMER
COLDER
FREEZER
SERVICE
115 Volts to solenoid is monitored
by microprocessor
If signal to solenoid lasts more than
15 seconds, power to icemaker
system is disabled
Fill tube heater is energized
whenever icemaker system
is switched “ON” and ICE
appears on LCD
Monitor Icemaker System and Display If Service Is Needed
The microprocessor monitors the 115 volts supplied to the icemaker water valve solenoid. If the solenoid is energized for more than fifteen seconds, power to the icemaker system is disabled (this does not include the fill tube
heater). A signal is then sent to the SERVICE and ICE annunciators on the LCD to flash. (See Figure 3-18 & 3-19)
NOTE: To clear the SERVICE and ICE error annunciators, the problem must be corrected, then the unit must be
switched OFF and back ON.
NOTE: To allow ice to freeze fully and reduce effects of low water pressure, the electronic control system interrupts
power to the icemaker system for 45 minutes after each ice harvest. This feature is present in the tall units only.
HIGH VOLTAGE
115 VOLTS
BLACK
L1
WHITE
60 CYCLES
NEUT
WHITE
M
J5
E2 E7 E10 E6
J3
J6
J7
TAN
J4
J1
J2
PINK
M
M
TAN
ICEMAKER
SWITCH
ICEMAKER
M
M
WATER
VALVE
WHITE/BLUE
2300-2900 OHMS
FILL TUBE
HEATER
ICE
SERVICE
FREEZER
COLDER
WARMER
COLDER
WARMER
REFRIGERATOR
ICE
ON/OFF
ON/OFF
UNIT
ON/OFF
Electronic Control
Integrated (
Integrated (
700-
700-
2) Series
2) Series
3-16
#3756780 - Revision D - July, 2005
UNIQUE 700- 2 TALL UNIT ELECTRONIC CONTROL INPUT OPERATIONS
The following few pages illustrate unique 700-2 tall unit electronic control input operations performed at the control
panel that you would not expect a customer to perform every day. The input operations described are:
Temperature Unit Selection Mode, Sabbath Mode, Showroom Mode, Manual Compartment Disable Mode, and
Manual Freezer Evaporator Defrost.
Temperature Units Selection Mode (Selecting Degrees Fahrenheit or Degrees Celsius Display)
700-2 electronic controls are initially set to display temperature in Fahrenheit (°F) units of measure. However, the
temperature units displayed can be converted from °F to °C (Celsius), and/or back again. This operation is called
Temperature Units Selection.
NOTE: Temperature Units Selection must be performed within the first minute after switching the unit ON.
To convert the temperature units of measure from Fahrenheit (°F) readings to Celsius (°C) readings, press and hold
the door ajar alarm bell key and the UNIT ON/OFF key simultaneously for five seconds, then release both keys (See
Figure 3-20). Then, “ °C “ will appear on the LCD indicating that temperatures will now be displayed in Celsius
units of measure. To convert back to Fahrenheit units of measure, repeat pressing the door ajar alarm bell key and
the UNIT ON/OFF key simultaneously (See Figure 3-21).
NOTE: Temperature Units Selection Mode will end ten seconds after the last key stroke.
NOTE: Do not
press and hold the UNIT ON/OFF key first, this will simply switch the unit OFF.
UNIT
ICE
WARMER
COLDER
REFRIGERATOR
ON/OFF
ON/OFF
ON/OFF
WARMER
COLDER
FREEZER
Figure 3-21. Converting Back to Fahrenheit Units of Measure
(within ten seconds of previous key stroke and/or within first minute after switching unit ON)
Press and Hold the Door Ajar Alarm Bell Key and The UNIT ON/OFF Keys
UNIT
ICE
WARMER
COLDER
REFRIGERATOR
ON/OFF
ON/OFF
ON/OFF
WARMER
COLDER
FREEZER
Figure 3-20. Converting to Celsius Units of Measure (within first minute after switching unit ON)
Press and Hold the Door Ajar Alarm Bell Key and The UNIT ON/OFF Keys for Five Seconds
Sabbath Mode
Sabbath Mode was incorporated into the 700-2 electronic control system for the observance of certain religious
days. Initiating Sabbath Mode disables the light switches and the circuits to the ice making system. The door ajar
alarm is also disabled when the unit is in Sabbath Mode.
To initiate Sabbath Mode, the unit must first be switched OFF using the UNIT ON/OFF key (See Figure 3-22). With
the unit switched OFF, press and hold the UNIT ON/OFF key for ten
seconds, then release (See Figure 3-23).
To return to normal lighting operation, press and release the UNIT ON/OFF key.
WARMER
FREEZER
COLDER
WARMER
COLDER
REFRIGERATOR
ICE
ON/OFF
FREEZER
COLDER
WARMER
COLDER
WARMER
REFRIGERATOR
ICE
ON/OFF
ON/OFF
ON/OFF
UNIT
ON/OFF
UNIT
ON/OFF
Electronic Control
Integrated (
Integrated (
700-
700-
2) Series
2) Series
3-17
#3756780 - Revision D - July, 2005
UNIT
ICE
WARMER
COLDER
REFRIGERATOR
ON/OFF
ON/OFF
ON/OFF
WARMER
COLDER
FREEZER
UNIT
ICE
WARMER
COLDER
REFRIGERATOR
ON/OFF
ON/OFF
ON/OFF
WARMER
COLDER
FREEZER
Figure 3-23. After Unit is Switched OFF, Press and Hold the UNIT ON/OFF Key for Ten Seconds
UNIT
ICE
WARMER
COLDER
REFRIGERATOR
ON/OFF
ON/OFF
ON/OFF
WARMER
COLDER
FREEZER
OFF
Figure 3-22. To Enter Sabbath Mode, Switch Unit OFF First
Showroom Mode
Showroom Mode was incorporated into the 700-2 electronic control system so that Integrated 700-2 Series units
could be displayed in a showroom setting. When in Showroom Mode, all cooling functions are disabled, but the
lighting system remains active.
To initiate Showroom Mode, the unit must first be switched OFF using the UNIT ON/OFF key. (See Figure 3-24)
With the unit switched OFF, press and hold either pair of WARMER and COLDER keys, then press the UNIT
ON/OFF key, then release all three keys. (See Figure 3-25)
To return unit to normal operating condition, repeat the steps of switching the unit OFF first. Then, press and hold
the WARMER and COLDER keys, then press the UNIT ON/OFF key.
NOTE: Always recheck set-points after returning unit to normal operating condition.
NOTE: It is possible to determine if a unit is in Showroom Mode by initiating Diagnostic Mode. If “Sr” is observed in
the left temperature display area during Diagnostic Mode, the unit is in Showroom mode. Initiating Diagnostic Mode
is covered later in this section.
Figure 3-25. After Unit is Switched OFF, Press and Hold the WARMER and COLDER Keys,
Then Press the UNIT ON/OFF Key
Figure 3-24. To Enter (or Exit) Showroom Mode, Switch Unit OFF First
UNIT
ICE
WARMER
COLDER
REFRIGERATOR
ON/OFF
ON/OFF
ON/OFF
WARMER
COLDER
FREEZER
OFF
Press and hold for 10 seconds
OFF
FREEZER
COLDER
WARMER
COLDER
WARMER
REFRIGERATOR
ICE
ON/OFF
ON/OFF
UNIT
ON/OFF
FREEZER
COLDER
WARMER
WARMER
COLDER
REFRIGERATOR
ICE
ON/OFF
ON/OFF
UNIT
ON/OFF
OFF
FREEZER
COLDER
WARMER
COLDER
WARMER
REFRIGERATOR
ICE
ON/OFF
ON/OFF
UNIT
ON/OFF
FREEZER
COLDER
WARMER
COLDER
WARMER
REFRIGERATOR
ICE
ON/OFF
ON/OFF
UNIT
ON/OFF
Electronic Control
Integrated (
Integrated (
700-
700-
2) Series
2) Series
3-18
#3756780 - Revision D - July, 2005
Manual Compartment Disable Mode
The Manual Compartment Disable Mode allows a customer to switch one compartment off for interior cleaning purposes, while allowing the other compartment to continue cooling. A service technician may also find this feature
helpful for service purposes.
To initiate Manual Compartment Disable Mode, the unit must first be switched OFF using the UNIT ON/OFF key
(See Figure 3-26). With the unit switched OFF, press and hold the WARMER key for the compartment being dis-
abled, then press the UNIT ON/OFF key, then release both keys (See Figure 3-27). The LCD will display “- -” (double dashes) in place of temperature readings for the compartment chosen, indicating that all cooling functions for
that compartment are disabled.
To return unit to normal operating condition, repeat the steps of switching the unit OFF first. Then, press and hold
the WARMER key for the disabled compartment, then press the UNIT ON/OFF key.
NOTE: Always recheck set-points after returning unit to normal operating condition.
UNIT
ICE
WARMER
COLDER
REFRIGERATOR
ON/OFF
ON/OFF
ON/OFF
WARMER
COLDER
FREEZER
Figure 3-27. After Unit is Switched OFF, Press and Hold the WARMER Key for the Compartment Being
Disabled, Then Press the UNIT ON/OFF Key.
Figure 3-26. To Enter (or Exit) Manual Compartment Disable Mode, Switch Unit OFF First
Indicating that all cooling functions
for that compartment are disabled.
Manual Freezer Evaporator Defrost
Manual Freezer Evaporator Defrost was incorporated into the Integrated 700-2 Series electronic control to assist in
servicing and problem diagnostics.
To manually initiate freezer evaporator defrost, press and hold the ICE key at the control panel for five seconds, then
release the key. (See Figure 3-28).
NOTE: Manual Freezer Evaporator Defrost will not operate if unit is in Sabbath Mode.
Figure 3-28. Initiate Manual Freezer Evaporator Defrost - Press and Hold the ICE key for Five Seconds
UNIT
ICE
WARMER
COLDER
REFRIGERATOR
ON/OFF
ON/OFF
ON/OFF
WARMER
COLDER
FREEZER
OFF
ICE
UNIT
ICE
WARMER
COLDER
REFRIGERATOR
ON/OFF
ON/OFF
ON/OFF
WARMER
COLDER
FREEZER
Press and hold for 5 seconds
OFF
FREEZER
COLDER
WARMER
COLDER
WARMER
REFRIGERATOR
ICE
ON/OFF
ON/OFF
UNIT
ON/OFF
UNIT
ON/OFF
FREEZER
COLDER
WARMER
COLDER
WARMER
REFRIGERATOR
ICE
ON/OFF
ON/OFF
ICE
FREEZER
COLDER
WARMER
WARMER
COLDER
REFRIGERATOR
ICE
ON/OFF
ON/OFF
UNIT
ON/OFF
Electronic Control
Integrated (
Integrated (
700-
700-
2) Series
2) Series
3-19
#3756780 - Revision D - July, 2005
Figure 3-31. Model 700TC/I-2
“ICE” & “SERVICE” Flashing = Water Valve Solenoid energized 15 Seconds, Icemaker System Disabled
NOTE: To clear this error indicator the problem must be corrected, then the unit switched OFF and back ON.
UNIT
ICE
WARMER
COLDER
REFRIGERATOR
ON/OFF
ON/OFF
ON/OFF
WARMER
COLDER
FREEZER
SERVICE
Figure 3-29. Model 700TC/I-2
“EE” Displayed at Left and “SERVICE” Flashing = Freezer Compartment Thermistor (or its Wiring) Fault
NOTE: To clear this error indicator the problem must be corrected
UNIT
ICE
WARMER
COLDER
REFRIGERATOR
ON/OFF
ON/OFF
ON/OFF
WARMER
COLDER
FREEZER
SERVICE
Figure 3-30. Model 700TC/I-2
“EE” Displayed at Right and “SERVICE” Flashing = Refrig. Compartment Thermistor (or its Wiring) Fault
NOTE: To clear this error indicator the problem must be corrected
ICE
UNIT
ICE
WARMER
COLDER
REFRIGERATOR
ON/OFF
ON/OFF
ON/OFF
WARMER
COLDER
FREEZER
SERVICE
UNIT
ICE
WARMER
COLDER
REFRIGERATOR
ON/OFF
ON/OFF
ON/OFF
WARMER
COLDER
FREEZER
SERVICE
Figure 3-32. Model 700TC/I-2
“SERVICE” Alone Flashing = Excessive Compressor Run (OR) Refrig. Evap. Thermistor (or its Wiring) Fault
NOTE: To help identify the problem, Diagnostic Mode (Covered later in this section) should be initiated.
NOTE: To clear this error indicator the problem must be corrected, then the unit switched OFF and back ON.
POSSIBLE 700-2 TALL UNIT ERROR INDICATORS
The next few pages contain diagrams illustrating what a customer may see on the LCD if there is a problem/error
with the unit. Please note the serial number breaks listed under some diagrams.
• For Model 700TC/I-2, See Figures 3-29 through 3-33
• For Model 700TR-2, See Figures 3-34 through 3-37
• For Model 700TF/I-2 and Model 700TF/I-2V, See Figures 3-38 through 3-41
Figure 3-33. Model 700TC/I-2 (AFTER SERIAL #1759493)
“EC” at Right and “SERVICE” Flashing = Excessive Compressor Run with Error Codes Registered
NOTE: To clear this error indicator and error code, the problem must be corrected, then the alarm bell ON/OFF
key must be pressed and held for 15 seconds.
SERVICE
FREEZER
COLDER
WARMER
COLDER
WARMER
REFRIGERATOR
ICE
ON/OFF
ON/OFF
UNIT
ON/OFF
SERVICE
FREEZER
COLDER
WARMER
COLDER
WARMER
REFRIGERATOR
ICE
ON/OFF
ON/OFF
UNIT
ON/OFF
ICE
SERVICE
FREEZER
COLDER
WARMER
COLDER
WARMER
REFRIGERATOR
ICE
ON/OFF
ON/OFF
UNIT
ON/OFF
SERVICE
FREEZER
COLDER
WARMER
COLDER
WARMER
REFRIGERATOR
ICE
ON/OFF
ON/OFF
UNIT
ON/OFF
SERVICE
FREEZER
WARMERCOLDER
WARMERCOLDER
REFRIGERATOR
ON/OFF
ON/OFF
UNITICE
ON/OFF
Electronic Control
Integrated (
Integrated (
700-
700-
2) Series
2) Series
3-20
#3756780 - Revision D - July, 2005
UNIT
WARMER
COLDER
DOOR
ON/OFF
ON/OFF
WARMER
COLDER
DRAWERS
SERVICE
Figure 3-35. Model 700TR-2
“EE” Displayed at Right and “SERVICE” Flashing = Upper Compartment Thermistor (or its Wiring) Fault
NOTE: To clear this error indicator the problem must be corrected
UNIT
WARMER
COLDER
DOOR
ON/OFF
ON/OFF
WARMER
COLDER
DRAWERS
SERVICE
Figure 3-36. Model 700TR-2
“SERVICE” Alone Flashing = Excessive Compressor Run (OR)
Upper or Lower Evap. Thermistor (or its Wiring) Fault
NOTE: To help identify the problem, Diagnostic Mode (Covered later in this section) should be initiated.
NOTE: To clear this error indicator the problem must be corrected, then the unit switched OFF and back ON.
UNIT
WARMER
COLDER
DOOR
ON/OFF
ON/OFF
WARMER
COLDER
DRAWERS
SERVICE
Figure 3-34. Model 700TR-2
“EE” Displayed at Left and “SERVICE” Flashing = Lower Compartment Thermistor (or its Wiring) Fault
NOTE: To clear this error indicator the problem must be corrected
WARMER
COLDER
DOOR
WARMER
COLDER
DRAWERS
Figure 3-37. Model 700TR-2 (AFTER SERIAL #1759163)
“EC” at Right and “SERVICE” Flashing = Excessive Compressor Run with Error Codes Registered
NOTE: To clear this error indicator and error code, the problem must be corrected, then the alarm bell ON/OFF
key must be pressed and held for 15 seconds.
SERVICE
DRAWERS
COLDER
WARMER
COLDER
WARMER
DOOR
ON/OFF
UNIT
ON/OFF
SERVICE
DRAWERS
COLDER
WARMER
COLDER
WARMER
DOOR
ON/OFF
UNIT
ON/OFF
SERVICE
DRAWERS
COLDER
WARMER
COLDER
WARMER
DOOR
ON/OFF
UNIT
ON/OFF
SERVICE
DRAWERS
COLDER
WARMER
COLDER
WARMER
DOOR
ON/OFF
UNIT
ON/OFF
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