Trane CGAF-C20, CGAF-C50, CGAF-C40, CGAF-C25, CGAF-C30 Programming, Troubleshooting Manual

Programming CG-SVP01B-EN
Troubleshooting
Guide

Library Service Literature

Product Section Refrigeration

Product Hermetic Scroll Liquid Chillers, Air Cooled

Model CG

Literature Type Programming, Trouble Shooting Guide

Sequence 01B

Date January 2005

File No. SV-RF-CG-SVP01B-EN 1/05

Supersedes CG-SVP01A-EN 4/03

IntelliPak

TM

Air-Cooled Cold Generator

Models

"H" and Later Design Sequence
CGAF-C20 CGAF-C40
CGAF-C25 CGAF-C50
CGAF-C30 CGAF-C60

With 3-DTM Scroll Compressors

Ó

ÿ

2005 American Standard Inc. All rights reserved

http://www.trane.com

Trane has a policy of continuous product and product data
improvement and reserves the right to change design and
specifications without notice. Only qualified technicians should
perform the installation and servicing of equipment referred to
in this publication.

About The Manual

Literature Change History

CG-SVP01B-EN (January 2005)

Original issue of this manual; provides specific program­ming, diagnostic, and troubleshooting information CGAF
units with “K” and later design sequence.

Overview of Manual

Note: One copy of this document ships inside the
control panel of each unit and is customer
property. It must be retained by the unit’s
maintenance personnel.

These units are equipped with electronic control modules
which provides operating functions that are significantly dif­ferent than conventional units.

The manual is divided into 6 sections. Each section pro­vides the operator with specific information about the sys­tem operating parameters and their related screens. By
carefully following the screen layout within this manual
while scrolling through the Human Interface, the operator
can monitor operating status, set specific operating param­eters, and diagnose system problems.

Before attempting to operate or service this equipment, re­fer to the “Start-Up” and “Test Mode” procedures in the ap­plicable Installation, Operation and Maintenance manual,
listed on the unit nameplate.

Note: The procedures discussed in this manual
should only be performed by qualified, experienced
HVAC technicians.

Refer to the Table of Contents and Index for specific topics
contained in this manual and supporting manuals.

2

About The Manual

Literature Change History ....................................................... 2

Overview of Manual ................................................................. 2

General Information

Model Number Description ...................................................... 4

Unit Nameplate ........................................................................ 4

Hazard Identification ................................................................ 4

Commonly Used Acronyms ..................................................... 4

Glossary of Terms .................................................................... 5

UCM Control System ............................................................... 6

UCM Module ............................................................................ 6

Compressor Module ................................................................ 6

Interprocessor Communications Bridge Module ..................... 6

Trane Communications Interface Module ............................... 6

Generic BAS Module ............................................................... 6

Power Disconnecting Switches ............................................... 6

Manual Disconnect Switch ...................................................... 6

115V Control Circuit Switch (1S1) ........................................... 6

24 Transformer Switch (1S70) ................................................ 6

Human Interface Module ......................................................... 7

General Operation ................................................................... 7

Menu Keys ............................................................................... 8

Data Manipulation Keys .......................................................... 8

Unit Operation Keys ................................................................ 9

General Status Display .......................................................... 10

Unit "Off" or "Stopped" .......................................................... 10

Unit "On" ................................................................................ 10

No Configuration .................................................................... 10

Factory Presets ..................................................................... 11

Password Protected Screens ................................................ 14

1 Status Menu

1.1 <top level status screen> ................................................. 15

1.2 Active Leaving Solution Setpoint or

Active Ice Build Terminate STP ........................................ 15

1.3 Compressor Status Submenu ......................................... 15

Compressor Relay K11 ......................................................... 16

Compressor Relay K12 ......................................................... 16

Compressor Relay K3 ........................................................... 16

Compressor Relay K4 ........................................................... 16

Compressor Module Ckt 1, Saturated Condensor Temperature16

Refrigerant Ckt 1, Suction and

Sat Liquid Temperatures ....................................................... 16

Refrigerant Ckt 1, Suction and Liquid Pressures ................. 16

Refrigerant Ckt 1, Superheat and

Subcooling Temperatures ...................................................... 16

Compressor Module Ckt 2, Saturated

Condensor Temperature ........................................................ 16

Refrigerant Ckt 2, Suction and

Sat Liquid Temperatures ....................................................... 17

Refrigerant Ckt 2, Suction and Liquid Pressures ................. 17

Refrigerant Ckt 2, Superheat and

Subcooling Temperatures ...................................................... 17

Ckt 1 and 2 Liquid Line Solenoid Valve ................................ 17

Compressor 1A Currents, Phase A and B............................. 17

Compressor 1B Currents, Phase A and C ............................ 17

Compressor 2A Currents, Phase B and C ............................ 17

Compressor 2B Currents, Phase A and C ............................ 17

1.4 General System Status Submenu ................................... 17

CGM Evap Solution Pump Relay and Evap Soln Flow

Switch Proving ....................................................................... 17

MCM Heat Tape Control Relay ............................................. 18

CGM Hot Gas Bypass Control Relay .................................... 18

CGM Ice Building Control Relay ........................................... 18

Setpoint Value Measured, CGM Ext Leaving Soln STP ....... 18

1.5 Controlling Setpoint Status Submenu ........................... 18

Active Leaving Solution Setpoint, and source ...................... 18

Active Ice Build Termination Setpoint, and source ............... 18

Active Hot Start Load Limit Setpt, and source ...................... 19

Active Capacity Limit Setpoint, and source .......................... 19

1.6 Temperature Input Status Submenu .............................. 19

Temp Measured by Sensor Connected To

CGM Entering Soln Temp Input ............................................ 19

Table of Contents

Temp Measured by Sensor Connected To

CGM Leaving Soln Temp Input ............................................. 19

Temp Measured by Sensor Connected To

CGM Outside Air Temp Input ................................................ 19

Compressor Module Ckt 1 Saturated

Condenser Temperature ........................................................ 19

Refrigerant Ckt 1, Suction and

Liquid Line Temperatures ...................................................... 19

Compressor Module Ckt 2 Saturated

Condenser Temperature ........................................................ 19

Refrigerant Ckt 2, Suction and

Liquid Line Temperatures ...................................................... 20

Temp Measured by Sensor Connected To

CGM Zone Temp Input .......................................................... 20

Temp Measured by Sensor Connected To

CGM ICS Temp Input ............................................................ 20

1.7 Misc Input Status Submenu ............................................ 20

CGM Ice Build Command Input ............................................ 20

CGM Evap Soln Flow Switch Input ....................................... 20

Refrigerant Ckt 1, Suction and Liquid Pressures ................. 20

Refrigerant Ckt 2, Suction and Liquid Pressures ................. 20

Compressor 1A Current, Phase A and B .............................. 20

Compressor 1B Current, Phase A and C .............................. 20

Compressor 2A Current, Phase B and C .............................. 21

Compressor 2B Current, Phase A and C .............................. 21

1.8 GBAS 0-5VDC Module Status Submenu ........................ 21

GBAS 0-5VDC Analog Input 1, Voltage and Assignment ..... 21

GBAS 0-5VDC Analog Input 2, Voltage and Assignment ..... 21

GBAS 0-5VDC Analog Input 3, Voltage and Assignment ..... 21

GBAS 0-5VDC Analog Input 4, Voltage and Assignment ..... 21

GBAS 0-5VDC Demand Limit Input Status ........................... 21

GBAS 0-5VDC Binary Output 1, Status and Assignment ..... 21

GBAS 0-5VDC Binary Output 2, Status and Assignment ..... 21

GBAS 0-5VDC Binary Output 3, Status and Assignment ..... 21

GBAS 0-5VDC Binary Output 4, Status and Assignment ..... 21

GBAS 0-5VDC Binary Output 5, Status and Assignment ..... 21

1.9 GBAS 0-10VDC Module Status Submenu ...................... 21

GBAS 0-10VDC Analog Input 1, Voltage and Assignment ... 21
GBAS 0-10VDC Analog Input 2, Voltage and Assignment ... 21
GBAS 0-10VDC Analog Input 3, Voltage and Assignment ... 21
GBAS 0-10VDC Analog Input 4, Voltage and Assignment ... 21

GBAS 0-10VDC Demand Limit Input Status ......................... 22

GBAS 0-10VDC Binary Output 1, Status and Assignment... 22
GBAS 0-10VDC Analog Output 1, Voltage and Assignment 22
GBAS 0-10VDC Analog Output 2, Voltage and Assignment 22
GBAS 0-10VDC Analog Output 3, Voltage and Assignment 22
GBAS 0-10VDC Analog Output 4, Voltage and Assignment 22
GBAS 0-10VDC Analog Output 5, Voltage and Assignment 22

2 Setpoints Menu

HI Leaving Solution Setpoint ................................................. 34

HI Ice Build Terminate Setpoint ............................................. 34

Low Solution Cutout Temp .................................................... 34

Heat Tape Temperature Setpoint .......................................... 34

Hot Start Load Limit Setpoint ................................................ 34

Low Ambient Pump Override Temp....................................... 34

Low Ambient Comp Lockout Temp........................................ 34

Leaving Solution Setpoint Source ......................................... 34

Ice Building Terminate Setpoint Source ................................ 35

Hot Start Load Limit Setpoint Source ................................... 35

Capacity Limit Setpoint Source ............................................. 35

3 Setup Menu ........................................................ 23

3.1 Language Selection and Unit of Measure ...................... 23

3.2 Local/Remote Control and Unit Address ....................... 23

3.3 General Unit Functions Setup Submenu ....................... 23

Reduce Multi-Unit Startup Power Demand, After

Power-Up, Delay Unit Start ................................................... 23

Demand Limit Definition ........................................................ 24

Compressor Lead/Lag Function Enable/Disable .................. 24

Hot Gas Bypass Function Enable/Disable ............................ 24

Hot Gas Bypass Max Run Time ............................................ 24

Hot Start Time Interval........................................................... 24

3

Table of Contents

Hot Operation Response Option ........................................... 24

Pumpdown Function Enable/Disable .................................... 24

Default Chiller Solution Pump Mode ..................................... 24

Evap Soln Pump Off Delay Time........................................... 25

Loop Stabilization Time ......................................................... 25

Low Ambient Compressor Lockout Enable/Disable.............. 25

Leaving Solution Reset Type ................................................ 25

Reset Start and End Temperatures ....................................... 25

Reset Maximum Amount Applied .......................................... 25

Chiller Application (Comfort or Process Cooling) ................. 25

3.4 Ice Building Control Functions Submenu ..................... 26

Ice Building Function Enable/Disable and Ice Building Mode

(Once or Continuous) ............................................................ 26

Ice Build Delay Time (Between Cycles) ................................ 26

3.5 Head Pressure Ctrl Setup Submenu .............................. 26

Saturated Condenser Temp Control Band, Lower

and Upper Limits ................................................................... 26

Saturated Condenser Temp Control Band, Temporary Low

Limit Suppression .................................................................. 27

Saturated Condenser Temperature, Efficiency Check Point 27
Saturated Condenser Temperature,

Low Ambient Control Point .................................................... 27

Saturated Condenser Temperature, Low Ambient Control

Deadband .............................................................................. 27

Saturated Condenser Temperature, OA Temp Supression

Setpoint .................................................................................. 27

3.6 GBAS 0-5VDC Module I/O Assignment .......................... 27

GBAS (0-5VDC) Analog Input 1 Assignment ........................ 27

GBAS (0-5VDC) Analog Input 2 Assignment ........................ 27

GBAS (0-5VDC) Analog Input 3 Assignment ........................ 27

GBAS (0-5VDC) Analog Input 4 Assignment ........................ 27

GBAS (0-5VDC) Binary Output 1 Definition ......................... 28

GBAS (0-5VDC) Output 1 Alarm Assignments ..................... 28

Assign Diag to GBAS (0-5V) Output 1 .................................. 28

GBAS (0-5VDC) Binary Output 2 Definition ......................... 29

GBAS (0-5VDC) Output 2 Alarm Assignments ..................... 29

Assign Diag to GBAS (0-5V) Output 2 .................................. 29

GBAS (0-5VDC) Binary Output 3 Definition ......................... 29

GBAS (0-5VDC) Output 3 Alarm Assignments ..................... 29

Assign Diag to GBAS (0-5V) Output 3 .................................. 29

GBAS (0-5VDC) Binary Output 4 Definition ......................... 29

GBAS (0-5VDC) Output 4 Alarm Assignments ..................... 29

Assign Diag to GBAS (0-5V) Output 4 .................................. 29

GBAS (0-5VDC) Binary Output 5 Definition ......................... 29

GBAS (0-5VDC) Output 5 Alarm Assignments ..................... 29

Assign Diag to GBAS (0-5V) Output 5 .................................. 29

3.7 GBAS 0-10VDC Module I/O Assignment ........................ 29

GBAS (0-10VDC) Analog Input 1 Assignment ...................... 29

GBAS (0-10VDC) Analog Input 2 Assignment ...................... 29

GBAS (0-10VDC) Analog Input 3 Assignment ...................... 29

GBAS (0-10VDC) Analog Input 4 Assignment ...................... 29

GBAS (0-10VDC) Binary Output Definition .......................... 29

GBAS (0-10VDC) Output Alarm Assignments ...................... 29

Assign Diag to GBAS (0-10V) Output ................................... 30

GBAS (0-10VDC) Analog Output 1 Definition....................... 30

GBAS (0-10VDC) Analog Output 2 Definition....................... 30

GBAS (0-10VDC) Analog Output 3 Definition....................... 30

GBAS (0-10VDC) Analog Output 4 Definition....................... 30

GBAS (0-10VDC) Analog Output 5 Definition....................... 30

3.8 CGM Alarm Output Disagnostic Assignments .............. 30

Assign Diagnostic to CGM Alarm Output .............................. 30

3.9 Device Characteristics Setup Definitions ...................... 31

Actuator Setup, Ckt 1 Low Ambient Output, Max Stroke Time 31

Actuator Setup, Ckt 1 Low Ambient Output, Min Voltage ..... 31

Actuator Setup, Ckt 1 Low Ambient Output, Max Voltage .... 31

Actuator Setup, Ckt 1 Low Ambient Output,

Direct/Reverse Acting ............................................................ 31

Actuator Setup, Ckt 2 Low Ambient Output, Max Stroke Time 31

Actuator Setup, Ckt 2 Low Ambient Output, Min Voltage ..... 31

Actuator Setup, Ckt 2 Low Ambient Output, Max Voltage .... 31

Actuator Setup, Ckt 2 Low Ambient Output,

Direct/Reverse Acting ............................................................ 32

Ckt 1 Suction Line Pressure Transducer, 0 PSIG and 100

PSIG Voltages ....................................................................... 32

Ckt 1 Liquid Line Pressure Transducer, 0 PSIG and 400 PSIG

Voltages ................................................................................. 32

Ckt 1 Suction Line Pressure Transducer, 0 PSIG and 400

PSIG Voltages ....................................................................... 32

Ckt 2 Liquid Line Pressure Transducer, 0 PSIG and 400 PSIG

Voltages ................................................................................. 32

Ckt 2 Suction Line Pressure Transducer, 0 PSIG and 400

PSIG Voltages ....................................................................... 32

3.10 Control Algorithm Tuning Parameters ......................... 32

Comfort Cooling, Design Delta Temperature Setpoint ......... 32

Comfort Cooling, Control Response Setpoint ....................... 33

Process Cooling Control Gains, Proportional and Reset Time 33

Process Cooling Control Gains, Proport Bias and Max Cycle

Rate ....................................................................................... 33

Low Ambient Fan Control Gain, Proportional and Reset Time . 33

Low Ambient Fan Control Gain, Rate Time .......................... 33

4 Configuration Menu .......................................... 36

Configuration - Model Num Digit 5,6,7 Capacity (tonnage) .. 36

Configuration - Model Num Digit 8 Line Voltage .................. 36

Configuration - Model Num Digit 11 Ice Building Control ..... 36

Configuration - Model Num Digit 11 Leaving Solution

Setpoint Range ...................................................................... 36

Configuration - Model Num Digit 13+ Hot Gas Bypass Option ... 36

Configuration - Model Num Digit 13+ Voltage/Phase Monitor..... 36

Configuration - Model Num Digit 13+ GBAS 0-5VDC Module .... 36

Configuration - Model Num Digit 13+ GBAS 0-10VDC Module .. 36
Configuration - Model Num Digit 13+

Superheat/Subcool Module ........................................................... 37

Configuration - Model Num Digit 13+ Current Sensing Module .. 37
Configuration - Model Num Digit 13+ TCI

Communications Module ............................................................... 37

Configuration - Model Num Digit 13+ Remote Human Interface 37

Software Revision Number Report, Cold Generator Module

(CGM) .................................................................................... 37

Software Revision Number Report, Single Compressor

Module (SCM) ........................................................................ 37

Software Revision Number Report, Multiple Compressor

Module (MCM) ....................................................................... 37

Software Revision Number Report, GBAS 0-5VDC Module 37
Software Revision Number Report, GBAS 0-10VDC Module37
Software Revision Number Report, Superheat/Subcool

Module (SSM) ........................................................................ 37

Software Revision Number Report, Current Sensing Module

(CSM) ..................................................................................... 38

Software Revision Number Report, Unit Human Interface (HI)
38
Software Revision Number Report, Remote Human Interface

(RHI) ...................................................................................... 38

Software Revision Number Report, TCI4 Communications

Module (TCI) .......................................................................... 38

5 Service Mode Menu ....................................... 39

CGM Evap Solution Pump Relay .......................................... 39

Liquid Line Solenoid Valve Ctrl Relays, Ckt 1 and Ckt 2...... 39

Low Ambient LPC Bypass Relay(s), Ckt 1 and Ckt 2 ........... 39

CGM Hot Gas Bypass Control Relay .................................... 39

Compressor Relays, K11 and K12 or K11,K12, K3 and K4.. 40

Condenser Fan Outputs, 1A, 1B and 1C .............................. 40

Condenser Fan Outputs, 2A, 2B and 2C .............................. 40

Condenser Fan Speed, Ckt 1 and Ckt 2 ............................... 40

CGM Alarm Output ................................................................ 40

MCM Heater Tape Relay K13................................................ 40

CGM Ice Build Relay Output ................................................. 41

GBAS 0-5VDC Module Relay Outputs 1-5 ........................... 41

GBAS 0-10VDC Module Relay Output ................................. 41

GBAS 0-10VDC Module Analog Outputs 1 and 2 Voltages . 41
GBAS 0-10VDC Module Analog Outputs 3 and 4 Voltages . 41

CGM ICS Controlled Relay ................................................... 41

Index .......................................................................................... 65

4

General Information

G = Superheat / Subcooling

P

* = Field Installed Options

Model Number Description

All Trane products are identified by a multiple-character
model number that precisely identifies a particular type of
unit. An explanation of the alphanumeric identification code
is provided below. Its use will enable the owner/operator, in­stalling contractors, and service engineers to define the op-

Sample Model Number: CGAF - C30 4 A A B 0 D etc.
Digit Number: 1,2,3,4 5,6,7 8 9 10 11 12 13 +

Digit 1,2 - Unit Function Digit 9 - Heating Capacity Digit 13, etc. Miscellaneous

CG = Cold Generator A = Standard A = Communications Interface (TCI)

Digit 3 - Unit Type Digit 10 - Design Sequence

A = Air-Cooled Condenser H = Brazed Plate Chiller D = Non-Fused Unit-Mounted Disconnect

Digit 4 - Development Sequence Digit 11 - Leaving Water Setpoint

F = Sixth A = 40 - 50 F w/o Ice Machine

B = 30 - 39 F w/o Ice Machine H = Hot Gas Bypass

Digit 5,6,7 - Nominal Capacity

C20 = 20 Tons E = 20 - 29 F w/o Ice Machine K = Stock Unit
C25 = 25 Tons 1 = 40 - 50 F w Ice Machine L = LonTalk® Communication Interface Module
C30 = 30 Tons 2 = 30 - 39 F w Ice Machine M = *Remote Human Interface
C40 = 40 Tons 3 = 51 - 65 F w Ice Machine N = Generic BAS Module 0-10 VDC Analog Output
C50 = 50 Tons 4 = 20 - 29 F w Ice Machine P = Remote Setpoint Potentiometer P/S
C60 = 60 Tons S = Special Q = *Zone Sensor (Chilled Solution Reset) P/S

Digit 8 - Power Supply

E = 200/60/3 P/S*** W = **Electronic Low Ambient Dampers P/S
F = 230/60/3 Y = *Inter-Processor Comm Bridge (IPCB)
4 = 460/60/3 P/S*** 9 = Packed Stock Unit
5 = 575/50/3
9 = 380/50/3 0 = None ** = Factory or Field Installed Option
D = 415/50/3 1 = UL/CSA *** Available on Pack Stock Units
S = Special

Unit Nameplate

One Mylar unit nameplate is located on the outside upper
left corner of the control panel door. It includes the unit
model number, serial number, electrical characteristics,
weight, refrigerant charge, as well as other pertinent unit
data. A small metal nameplate with the Model Number, Se­rial Number, and Unit Weight is located just above the Mylar
nameplate, and a third nameplate is located on the inside of
the control panel door.

D = 51 - 65 F w/o Ice Machine J = Generic BAS Module 0-5 VDC Input, Binary O.

Digit 12 - Agency Approval

Hazard Identification

WARNING – Indicates a potentially hazardous

situation which, if not avoided, could result in death or
serious injury.

CAUTION – Indicates a potentially hazardous

situation which, if not avoided, may result in minor or
moderate injury. It may also be used to alert against
unsafe practices.

CAUTION - Indicates a situation that may result in

equipment or propertydamage only accidents.

Echelon, LON, LONWORKS, LonBuilder, NodeBuilder, LonManager, LonTalk, LonUsers, Neuron, 3120, 3150, the Echelon logo, and the LonUsers logo are
trademarks of Echelon Corporation registered in the United States and other countries. LonLink, LonResponse, LonSupport, LonMaker, and LonPoint are
trademarks of Echelon Corporation.

eration, specific components, and other options for any spe­cific unit.

When ordering replacement parts or requesting service, be
sure to refer to the specific model number, serial number,
and DL number (if applicable) stamped on the unit name­plate.

B = No Unit Heat Tape (50 Hz Units Only)
C = Compressor Current Sensing (CSM)

E = *Unit Isolators - Neoprene P/S
F = *Unit Isolators - Spring P/S

S = Special
V = Copper Fin Condenser Coil

Commonly Used Acronyms

For convenience, a number of acronyms and abbreviations
are used throughout this manual. These acronyms are al­phabetically listed and defined below.

A/D = Analog/Digital
BAS = Building Automation System
CAR = Circuit shuwdown - Auto Reset
Cf = Evaporator limit control integrator
CGA = Air cooled - Cold Generator
UCM = Cold generator module. Contains I/O for most

chilled solution functions.
Comp(s) = compressor(s)
Cond = condenser
Ckt = circuit
CLE = Chilled solution flow integrator
CMR = Circuit shutdown - Manual Reset
CRS = Control response setpoint
CSA = Canadian Standards Association
CCW = counterclockwise
CW = clockwise
DBZ = Width of Dead Band Zone
DDT = Design Delta-T setpoint
Delta T = The temperature difference between EST & LST
Diag = diagnostics
EST = Entering solution temperature
Ent = Entering

5

General Information

Evap = Evaporator
Ext = External
GBAS = Generic Building Automation System Module
gfm = gallons per minute
HGBP = Hot gas bypass
HI = Human Interface
HO = History Only
HSLLS = Hot Start Load Limit setpoint
HVAC = Heating, Ventilation and Air Conditioning
IAR = Information only Auto Reset
IBTS = Ice Build Terminate Setpoint
ICS = Integrated Comfort System
IFW = Informational Warning
INFO = Information Only [Diagnostic]
I/O = Inputs/outputs
IOM = installation/operation/maintenance manual
IPC = Interprocessor communications
IPCB Module = Interprocessor communications bridge

module
IRDT = Ice Rebuild Delay Timer
LCD = Liquid Crystal Display
LCI = LonTalk® Communication Interface
LCI-I = LonTalk® Communication Interface for Intellipak
LED = Light Emitting Diode
LH = left-hand
LonTalk = An open, device networking communications

protocol for controls. This protocol is defined in ANSI

approved standard EIA/CEA-709.1-A-1999.
LSC = Low Solution Temperature Cutout Setpoint
LPC = Low Pressure Cutout [Switch]
LST = Leaving solution temperature
MAR = Machine shutdown - Auto Reset
Max = maximum
MCM = Multiple circuit compressor module
Min = minimum
Misc = miscellaneous
MMR = Machine shutdown - Manual Reset
Mod = module
Mon = monitor
NCS = Number of capacity steps
num = number
OA = Outdoor air
OAT = Outdoor air Temperature
PAR = Partial System Disable, Auto Reset [Diagnostic]
PMR = Partial System Disable, Manual Reset [Diagnostic]
PRT = Pump Run Timer
PSIG = pounds-per-square-inch gauge pressure
PWM = Pulse width modulated
RAM = Random Access Memory
RTM = rooftop module
ROM = Read Only Memory
S/W = Software
Sat - saturated
SCM = single circuit compressor module
SCT = Saturated Condensing Temperature
Soln = solution
STP = setpoint
TCI Module = Trane communications interface module
Temp = temperature
UCM = Unit Control Modules
UL = Underwriter's Laboratories
VFD = Variable Frequency Drive
w.c. = water column
XL = across-the-line start

Glossary of Terms

Carefully review these definitions since they are used
throughout this document and the I.O.M.. Knowledge of
these terms is essential in gaining an understanding of how
these units operate.

Active Setpoint

The setpoint which is currently being used for control by
the setpoint source selection.

Comm3

Trane proprietary network communication protocol.

Comm5

Trane’s implementation of LonTalk (an open network
communication protocol.)

Chilled Solution Temperature Reset

A function that shifts the Leaving Solution Temp Setpoint
an amount based on the value of another parameter—
typically ZoneTemp, Entering Solution Temp or Outdoor
Air Temp. The purpose of this function is to lower unit ca­pacity to better meet load requirements.

Compressor Protection Switch

A pressure switch installed on the suction line that pre­vents compressor operation below the switch's setpoint.

Control Band

The range of temperatures or pressures which would
normally be maintained by the various control functions.

Control Point

The value of a setpoint that an algorithm is using at any
given time.

Deadband

As applied to LST control, this refers to a range of tem­peratures equally spaced above and below the CSS in
which the control algorithm is satisfied. There is not ad­justment of machine capacity within the deadband.

Emergency Stop

UCM binary input. Can be used for emergency shutdown
of the unit by field-installed contacts. A diagnostic is pro­duced when this input is open.

External Auto/Stop

A binary input on the UCM that allows the use of a field­supplied switch to perform normal unit on/off action.

Leaving Solution Setpoint

Active leaving solution setpoint. This setpoint is the con­trol setpoint for process and comfort cooling.

Leaving Solution Temperature Control Point

The revised temperature setpoint after chilled solution
temp reset has been applied.

LonTalk©

An open, device networking communications protocol for
controls. This protocol is defined in ANSI approved stan­dard EIA/CEA-709.1-A-1999.

Low Ambient Compressor Lockout

A function which prevents compressor operation at low
outdoor ambient temperatures.

Remote Human Interface

A human interface module designed to be mounted re­motely from the unit. There will be some functional differ­ences between a unit mounted and a remote mounted
human interface module.

Reset Amount Maximum

The maximum amount of reset allowed.

Reset End Temperature

The temperature at which the maximum reset amount
will occur.

Reset Start Temperature

The temperature at which reset will begin.

Unit Control Module

This term is used to describe the set of electronic mod­ules which make up the unit control system.

6

General Information

UCM Control System

Trane Large Commercial Cold Generator Units are con­trolled by a microelectronic control system that consists of a
network of modules and are referred to as Unit Control
Modules (UCM).

The unit size, peripheral devices, options, etc... determine
the number and type of modules that a particular unit may
employ.

The UCM receives analog and binary inputs, then pro­cesses this information and supplies outputs in the form of
modulating voltages, contact closures, etc... to control
damper actuators, fan motors, compressors, valves, and
other electrical devices in the system to maintain set tem­perature levels.

The UCM provides some equipment protection functions
both directly and indirectly, such as chilled water flow and
compressor lockouts.

Listed below are the various modules that may be em­ployed in a UCM control system.

Cold Generator Module (1U48) (CGM - Standard)

The Cold Generator Module (CGM) responds to cooling re­quests by energizing the proper unit components based on
information received from other unit modules, sensors, re­mote panels, and customer supplied binary inputs. It ini­tiates unit operation based on that information.

Compressor Module (1U49) (MCM)

The Compressor module, (Single Circuit & Multiple Circuit),
upon receiving a request for mechanical cooling, energizes
the appropriate compressors and condenser fans. It moni­tors the compressor operation through feedback information
it receives from various protection devices. It also provides
heat tape output control for heat exchanger protection.

Interprocessor Communications Board (1U55) (IPCB ­used with Optional Remote Human Interface)

The Interprocessor Communication Board expands commu­nications from the unit’s UCM network to a Remote Human
Interface Panel. DIP switch settings on the IPCB module for
this application should be; Switches 1 and 2 “Off”, Switch 3
“On”.

Trane Communications Interface Module (1U54) (TCI ­Optional - used with Trane ICS

The Trane Communication Interface module expands com­munications from the unit’s UCM network to a Trane Tracer

™

100

or a Tracer Summit™ system and allows external
setpoint adjustment and monitoring of status and diagnos­tics.

DIP Switch settings on the TCI module for these applica­tions should be:
Switches 1, 2, and 3 are “Off”

™

)

Generic Building Automation System Module (1U51 =
GBAS 0-5V, 1U98 = GBAS 0-10V) (Optional - used with
Non-Trane Building Control System)

The Generic Building Automation System (GBAS) module
allows a non-Trane building control system to communicate
with the unit and accepts external setpoints in form of ana­log inputs (0 - 5 DCV or 0 - 10 DCV depending on the mod­ule selected) and a binary Input for demand limit. Five (5)
binary outputs are available on 0 - 5 DCV modules. One (1)
binary output and four (4) analog outputs are available on
the 0 - 10 DCV modules. Refer to the “Field Installed Con­trol Wiring” section for the control wiring to the GBAS mod­ule and the various desired setpoints with the correspond­ing DC voltage inputs.

Lontalk Communication Interface Module (1U54)

(LCI Optional - used on units with Trane ICS
Building Automation Systems)
The LonTalk Communication Interface module expands
communications from the unit’s UCM network to a Trane
Tracer Summit™ or a 3rd party building automation system,
that utilizes LonTalk, and allows external setpoint and con­figuration adjustment and monitoring of status and diag­nostics.

Current Sensing Module (1U90) (CSM - Optional)

Current transformers located around two (2) of the main
power leads for each compressor monitors the running cur­rent during compressor operation. The information is sent to
the UCM and can be accessed through the “Compressor
Status” submenu displayed at the Human Interface Module.

Superheat & Subcooling Module (1U91) (SSM ­Optional)

Monitors the system operating superheat and subcooling
through the use of pressure transducers, liquid line, and
suction line temperature sensors. The information is sent to
the SSM and can be accessed through the “Compressor
Status” submenu displayed at the Human Interface Module.

™

or 3rd party

Power Disconnecting Switches

Manual Disconnect Switch

(Optional 1S14) Manual disconnect switch 1S14, located in
the unit control panel, instead of the power terminal block
1TB1, allows the operator to disconnect power from the
unit's “high” voltage (200V-575V) section, the 115V section,
and the 24V section without having to open the control
panel door. A description of its features and operation are
given in the Installation, Operation, & Maintanence manual.

115V Control Circuit Switch (1S1)

Control circuit switch (1S1) is provided on all units and is lo­cated downstream of the 115V transformer 1T1. It allows
the operator to disconnect power from the unit's 115V con­trol components by placing the switch in the "Off" position.

24V Transformer Switch (1S70)

Transformer switch 1S70 is provided on all units and is lo­cated downstream of 24V transformers 1T2 and 1T3. It al­lows the operator to disconnect (24V) power from all of the
unit's control modules by placing the switch in the "Off" po­sition.

For a complete description of the 24V components and op­eration, refer to the latest edition of the applicable Installa­tion, Operation and Maintenance manual listed on the unit
nameplate.

7

General Information

Human Interface Module

(1U65 = Local 6U66 = Remote)

The Human Interface (HI) Module illustrated in Figure 1 is
the device which enables the customer, building owner, or
contractor, to communicate to the unit the necessary pa­rameters for unit operation.

The local (unit mounted) Human Interface and the Remote
Human Interface Panels’ functions are identical, except for
Service mode which is not available on the Remote Human
Interface Panel.

The local HI Module is located in the unit’s main control
panel. A small door located in the unit’s control panel door
allows access to the HI Module’s keypad and display win­dow.

There is a 2 line by 40 character LCD screen which pro­vides status information for the various unit functions as
well as menus used to set or modify the operating param­eters. There is a 16 key keypad adjacent to the LCD screen
which allows the operator to scroll through the various
menus and make adjustments to the setpoints, etc...

The information displayed in the LCD window will be top
level unit status information unless the operator initiates
other displays.

Figure 1

Human Interface Module

General Operation

At power-up, the Human Interface LCD will display one of
three initial screens illustrated in the "General Status" sec­tion.

1. Unit Status (Unit Off or Stopped) (The unit is configured
and operational, but is not running). This screen shows
state, mode, and function information when the unit is off
or stopped.

2. Unit Status (Unit On) (The unit is configured and opera­tional, and is running). This screen shows state, mode,
and function information when the unit is on.

3. No Configuration (the unit needs to be configured). This
screen shows that required configuration data is missing.

The LCD screen has a backlight that makes the information
easier to read. The light will go out if no keys are pressed
for 30 minutes. If it goes out, simply press the STATUS key.

8

General Information

Menu Keys

The six keys illustrated in Figure 2 in the MENU area (STA­TUS, SETPOINTS, SETUP, CONFIGURATION, DIAGNOS­TICS, and SERVICE MODE) are used to bring up the vari­ous interactive menus where the user inputs and accesses
unit operating data. Pressing these keys will display the ini­tial screen for the menu designated by the key’s name. The
following information describes the keys and their functions
when viewing the various menus.

If no key is pressed for 30 minutes while the LCD is display­ing a menu screen, it will revert back to the unit operating
status screen.

Figure 2

Human Interface Keypad

SETPOINTS Key

Pressing the SETPOINTS key will cause the LCD screen to
display the first of the setpoint screens where the operator
will designate default temperature setpoints and setpoint
source information. While scrolling through the setpoint
screens, pressing this key again will cause the LCD to dis­play the first setpoint screen.

DIAGNOSTICS Key

Pressing the DIAGNOSTICS key at any time will allow the
operator to view any unit function failures. The LCD screen
will display one of the diagnostic screens (depending on
which diagnostic, if any, is present). If no key is pressed for
30 minutes while the screen is displaying diagnostic infor­mation, it will revert back to the operating status display.

CONFIGURATION Key

Pressing the CONFIGURATION key will cause the LCD
screen to display the first of the configuration screens
where the operator will designate unit configuration data
such as unit type, capacity, installed options, etc...

This information was programmed at the factory. Pressing
the configuration key at any level in the configuration menu
will display the first configuration screen.

Note: This key should be used if the unit's
configuration data is lost or new options are added
in the field, and to view current configuration.

STATUS Key

Pressing the STATUS key causes the LCD to display the
operating status screen; i.e. "On", "Unit Stop", "External
Stop", "Emergency Stop", "Service Mode". Pressing the
NEXT key allows the operator to scroll through the screens
which provide information such as air and refrigerant tem­peratures, pump operation, compressor operation, as well
as active cooling and compressor lockout setpoints. Press­ing the STATUS key while viewing any of the data screens
will cause the LCD to go back to the operating status
screen.

SETUP Key

Pressing the SETUP key will cause the LCD screen to dis­play screens where the operator will designate various op­erating parameters such as temperature ranges, limits, per­centages, etc. for the control of the unit’s various operating
modes. Pressing the SETUP key at any level in the SETUP
menu will display the first SETUP screen.

SERVICE MODE Key

Pressing the SERVICE MODE key causes the LCD to dis­play the first of the service test mode screens showing vari­ous unit components which may be turned on or off for the
particular test being performed. Once the status of these
components is designated, the LCD will display screens
that allow the operator to designate the TEST START time
delay for each test.

Data Manipulation Keys

The six data manipulation keys illustrated inFigure 2, (EN­TER, CANCEL, + (Plus), - (Minus), PREVIOUS, and NEXT
are used to modify the data within the screens (change val­ues, move the cursor, confirm choices, etc...)

ENTER Key

This key will confirm the new values that were designated
by pressing the + (Plus) or - (Minus) keys at all edit points.
When viewing status and diagnostics screens, it has no
function.

CANCEL Key

After changing data, at an editable screen, but before con­firming it with the ENTER key, pressing the CANCEL key
will return the data to its previous value. This key shall also
function to clear active diagnostics.

9

General Information

+ (Plus) Key

When viewing a setpoint screen, this key will increase the
temperature or pressure value of the setpoint. When work­ing with a status menu, it will add the current status display
to the custom menu. When viewing the setup or service test
screens, it will increase setpoints or toggle choices On or
Off at each edit point.

- (Minus) Key

This key when viewing the setpoint screen will decrease the
temperature or pressure value of the setpoint. When view­ing the setup or service test screens, it will decrease
setpoints or toggle choices On or Off at each edit point.
When viewing the custom menu, pressing the - (Minus) key
will remove the status screen from the custom menu. When
viewing diagnostics screens it has no function.

PREVIOUS Key

Pressing the PREVIOUS key causes the LCD to scroll
backwards through the various displays for each menu. At
displays with multiple edit points, it moves the cursor from
one edit point to another.

NEXT Key

Pressing the NEXT key causes the LCD to scroll forward
through the various displays for each menu. At displays
with multiple edit points it moves the cursor from one edit
point to another.

Unit Operation Keys

AUTO Key

Pressing the AUTO key at any time will cause the display to
go to the top level status display and, if the unit is shut­down, will cause the unit to begin operation in the appropri­ate mode no matter what level in the menu structure is cur­rently being displayed. If the current display is an editable
display, the AUTO key will confirm the desired edit.

STOP Key

Pressing the STOP key will cause the unit to transition to
the stop state. If the current display is editable, pressing the
STOP key will cancel the desired edit.

TEST START Key (SERVICE)

Pressing this key while viewing any screen in the SERVICE
Mode menu will start the service test. When viewing status,
setup, setpoint, and diagnostics screens, it has no function.

CUSTOM Key

The Custom menu is simply a status menu that contains
screens that the user monitors most frequently. The Custom
menu can only contain five status screens. To create the
Custom menu, press the STATUS key, followed by the
NEXT key (this brings up the initial status screen). If you
want to add this screen to the Custom menu, press the +
(Plus) key, if not, press the Next key again until a status
screen appears that you would like to add to the Custom
menu. Pressing the + (Plus) key while viewing any of the
various status screens will add that screen to the Custom
menu. Once the Custom menu is programed it can be ac­cessed by pressing the CUSTOM key. To remove a status
screen from the Custom menu, press the CUSTOM key,
then press the NEXT key until the status screen that you
want to remove appears, then press the - (Minus) key.

After adding a screen to the Custom menu, the following
screen is displayed:

“Item Added to Custom Menu”

If the + (PLUS) key is pressed and the Custom menu is full,
the following screen is displayed:

“Custom Menu Is Full”

After deleting a screen from the Custom Menu, the follow­ing screen is displayed:

“Item Deleted from Custom Menu”

If the CUSTOM key is pressed and there are no entries, the
following screen is displayed:

No items are selected for Custom Report
See Operators Manual to select entries

10

General Information

(Blank)

(Diagnostics)

Trouble Indicator

____________________ ____________________

General Status Display

Anytime the unit is powered up, or the STATUS, AUTO, or STOP keys are pressed, the unit mounted Human Interface will
display one of the following three general status display screens. The operator will then be able to enter keystrokes which
will allow him to navigate through a set of menus and submenus in order to provide/access various monitoring, setup, and
configuration infromation. The Human Interface will not display screens or parts of screens for which the unit is not config­ured.

Unit "Off" or "Stopped"

If at power up the unit is not running, the following display will appear on the Human Interface LCD screen. When this screen
is being displayed, the only functional keys are the six menu keys (STATUS, SETPOINTS, DIAGNOSTICS, SETUP, CON­FIGURATION, AND SERVICE MODE), the AUTO key, the CUSTOM key, and the STOP key.

Mode of Oper ation

(On)

(Off)

_______________

Solution Pump

_____

Top Level State

(External Stop)
(Emergency Stop)

Trouble Indicator

(Unit Shutdown)
(Unit Stop) (Blank)

Unit "On"

If the unit has entered an operating state (running), the following display will appear on the Human Interface LCD screen.
When this screen is being displayed, the only functional keys are the six menu keys (STATUS, SETPOINTS, DIAGNOS­TICS, SETUP, CONFIGURATION, AND SERVICE MODE), the AUTO key, the CUSTOM key, and the STOP key.

Mode of Operation

(Cool 0)

(Hot Gas Bypass)

(Cool 1)
(Cool 2) (On)
(Cool 3) (Off)
(Cool 4)

(Flow SW State Fail)*

_______________

Top Level State

(Servi ce Mode On) Ice Bui lding Co mple te
(Comfort Cooling) Ice Rebuild Delay
(Process Cooling) Unit Standby (Diagnostics)
(Ice Building) (Blank)
(Loop Stabilization)

Solution Pump

_____

*Service Test Mode Only - Flow switch failed to open after solution pump turned off.

No Configuration

If at power up the unit has not been programmed with the necessary configuration data for normal unit operation, the follow­ing display will appear on the Human Interface LCD screen. When this screen is being displayed, the only functional key is
the CONFIGURATION key.

No Configuration Present

Press Configuration Key

Note: This screen will only appear when the CGM has been field replaced. Refer to the Configuration Menu.

11

General Information

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49

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Factory Presets

If your application requires different settings, turn to the

listed page beside the function, press the designated func­The CGM controlled unit has many operating functions
whose settings are preset at the factory, but may be modi­fied to meet the unique requirements of each job. The fol­lowing list identifies each of the unit's adjustable functions

tion menu key, then press and hold the NEXT or PREVI-

OUS key until its screen appears on the LCD. Once the

proper screen appears, simply follow the programming in-

structions given below the applicable screen in this manual.
and the value assigned to it. If these factory presets match
your application's requirements and the"System Start-Up
procedures in the Installation, Operation & Maintyenance
manual has been completed, simply press the AUTO key at

Note: Record any changes made to the factory
preset values in the corresponding space provided.

the Human Interface module to begin unit operation.

Factory Preset Changed See page... To adjust

To to adjust Press....

Setpoints

Leavin
Low Ambient Compressor Lockout
Temperature Setpoint 40 de
Heat Tape Temperature Setpoint 40 de
Hot Start Load Limit Setpoint 71 de
Ice Buildin
Low Solution Cutout Temperature 35 de
Low Ambient Pump Override Temperature 35 de
Use Leavin
Use Ice Buildin
Use Hot Start Load Limit Setpoint From: HI STP Menu 35 SETPOINTS
Use Capacity Limit Setpoint From: No Source Selected 35 SETPOINTS

Solution Setpoint 44 deg F 34 SETPOINTS

F 34 SETPOINTS
F 34 SETPOINTS
F 34 SETPOINTS

Terminate Temperature 27 deg F 34 SETPOINTS

F 34 SETPOINTS
F 34 SETPOINTS

Solution Setpoint From: HI STP Menu 34 SETPOINTS

Terminate Setpoint From: HI STP Menu 34 SETPOINTS

Information format

Display Text in En
Display Units in En
Unit Control Local 23 SETUP
Unit Address

General Unit Functions Setup

Delay unit Start 0 Seconds 23 SETUP
Demand Limit Definition None 24 SETUP
Hot Gas Bypass Function Disabled 24 SETUP
Hot Gas Bypass Max Run Time 30 Minutes 24 SETUP
Hot Start Time In terval 60 Minutes 24 SETUP
Hot Operation Response Option 50% Capacity

Pumpdown Function Disabled 24 SETUP
Compressor Lead/La
Default Chiller Solution Pump Mode Auto 24 SETUP
Evaporator Solution Pump Off Delay Time 30 Seconds 25 SETUP
Loop Stabilization Time 120 Seconds 25 SETUP
Low Ambient Compressor Lockout Enabled 25 SETUP
Leavin
Chiller Application Comfort 25 SETUP
Evaporator Solution Flow Switch Provin
OA Temp Reset Type: Start Temp 70 de
OA Temp Reset Type: End Temp 50 de
OA Temp Reset Type: Max Amount of Reset 5 de
Zone Temp Reset Type: Start Temp 78 de
Zone Temp Reset Type: End Temp 75 de
Zone Temp Reset Type: Max Amount of Reset 5 de
Enterin
Enterin
Enterin

Solution Reset Type None 25 SETUP

Solution Temp Reset Type: Start Temp 45 deg F 25 SETUP
Solution Temp Reset Type: End Temp 40 deg F 25 SETUP
Solution Temp Reset Type: Max Amount 5 deg F 25 SETUP

Function Disabled 24 SETUP

lish Language 23 SETUP

lish 23 SETUP

23 SETUP

(Auto Reset Dia

Disabled 25 SETUP

.) 24 SETUP

F 25 SETUP
F 25 SETUP

F 25 SETUP

F 25 SETUP
F 25 SETUP

F 25 SETUP

12

General Information

Factory Presets (Continued)

Factory Preset Changed See page... To adjust

To to adjust Press....

Ice Building C ontrol Fuctions

Ice Building Function Disabled 26 SETUP
Ice Building Mode One Time 26 SETUP
Ice Rebuild Delay Time 360 Minutes 26 SETUP

GBAS 0-5 VDC Module I/O Assignments

GBAS (0-5 VDC) Analog Input 1 Assignment Not Assigned 27 SETUP
GBAS (0-5 VDC) Analog Input 2 Assignment Not Assigned 27 SETUP
GBAS (0-5 VDC) Analog Input 3 Assignment Not Assigned 27 SETUP
GBAS (0-5 VDC) Analog Input 4 Assignment Not Assigned 27 SETUP
GBAS (0-5 VDC) Binary Output 1 Definition Indicate any comp

is running 28 SETUP
GBAS 0-5 V Output 1 Alarm Assignments Any active diagnostic 28 SETUP
GBAS (0-5 VDC) Binary Output 2 Definition Indicate selected

diagnostics 29 SETUP

GBAS 0-5 V Output 2 Alarm Assignments Comp protection LPC

Open C kt 1 29 SETUP

Comp protection LPC

Open Ckt 2 (40-60 Ton) 29 SETUP

Compressor Trip Ckt 1 29 SETUP
Compressor Trip Ckt 2

(40 - 60 Ton) 29 SETUP
Comp Contactor Fail Ckt 1 29 SETUP
Comp Contactor Fail Ckt 2

(40 - 60 Ton) 29 SETUP

Low Press Control

Open - Ckt 1 29 SETUP

Low Press Control

Open - Ckt 2 (40-60 Ton) 29 SETUP

GBAS (0-5 VDC) Binary Output 3 Definition Indicate Unit at

Max capacity 29 SETUP

GBAS (0-5 VDC) Output 3 Alarm Assignments Any active diagnostic 29 SETUP
GBAS (0-5 VDC) Binary Output 4 Definition Indicate selected

diag alarms 29 SETUP
GBAS (0-5 VDC) Output 4 Alarm Assignments Any active diagnostic 29 SETUP
GBAS (0-5 VDC) Binary Output 5 Definition Indicate selected

diag alarms 29 SETUP
GBAS (0-5 VDC) Output 5 Alarm Assignments Any active diagnostic 29 SETUP

GBAS 0-10 VDC Module I/O Ass ignments

GBAS (0-10 VDC) Analog Input 1 Assignment Not Assigned 29 SETUP
GBAS (0-10 VDC) Analog Input 2 Assignment Not Assigned 29 SETUP
GBAS (0-10 VDC) Analog Input 3 Assignment Not Assigned 29 SETUP
GBAS (0-10 VDC) Analog Input 4 Assignment Not Assigned 29 SETUP
GBAS (0-10 VDC) Binary Output Definition Indicate selected

GBAS (0-10 VDC) Output Alarm Assignments Any active diagnostic 30 SETUP
GBAS (0-10 VDC) Analog Output 1 Assignment Leaving solution temp 30 SETUP
GBAS (0-10 VDC) Analog Output 2 Assignment Entering solution temp 30 SETUP
GBAS (0-10 VDC) Analog Output 3 Assignment Active cooling capacity 30 SETUP
GBAS (0-10 VDC) Analog Output 4 Assignment Outside air temperature 30 SETUP

CGM alarm output de finitions

diag alarms 29 SETUP

Any Active Diagnostic 30 SETUP

13

General Information

S

C

Factory Presets (Continued)

Factory Preset Changed See page... To adjust

To to adjust Press....

Actuator Setup Definitions

Number 1 Low Ambient Maximum Stroke 30 seconds 31 SETUP
Number 1 Low Ambient Minimum Voltage 2.0v 31 SETUP
Number 1 Low Ambient Maximum Voltage 10.0v 31 SETUP
Number 1 Low Ambient Acting Direct 31 SETUP
Number 2 Low Ambient Maximum Stroke 30 seconds 31 SETUP
Number 2 Low Ambient Minimum Voltage 2.0v 31 SETUP
Number 2 Low Ambient Maximum Voltage 10.0v 31 SETUP
Number 2 Low Ambient Acting Direct 31 SETUP
Ckt 1 Suction Line Pressure Transducer -­ voltage at 0 PSIG 0.118 V 32 SETUP
Ckt 1 Suction Line Pressure Transducer -­ voltage at 100 PSIG 4.847 V 32 SETUP
Ckt 2 Suction Line Pressure Transducer -­ voltage at 0 PSIG 0.118 V 32 SETUP
Ckt 2 Suction Line Pressure Transducer -­ voltage at 100 PSIG 4.847 V 32 SETUP
Ckt 1 Liquid Line Pressure Transducer -­ voltage at 0 PSIG 0.118 V 32 SETUP
Ckt 1 Liquid Line Pressure Transducer -­ voltage at 400 PSIG 4.847 V 32 SETUP
Ckt 2 Liquid Line Pressure Transducer -­ voltage at 0 PSIG 0.118 V 32 SETUP
Ckt 2 Liquid Line Pressure Transducer -­ voltage at 400 PSIG 4.847 V 32 SETUP

Head Pressure Control Setup

Saturated condenser Temp Control Band
(Lower Limit) 85 deg F 26 SETUP
Saturated condenser Temp Control Band
(Upper Limit) 125 deg F 26 SETUP
Saturated condenser Temp Control Band
(Temporary Low Limit Suppression) 10 deg F 27 SETUP
Saturated condenser Temp
(Efficiency Check Point) 110 deg F 27 SETUP
Saturated condenser Temp (Low Ambient
Control Point) 100 deg F 27 SETUP

aturated condenser Temp (Low Ambient

ontrol Deadband)
Saturated condenser Temp (OA Temp
Suppression Setpoint)

4.0 deg F 27 SETUP

40 deg F 27 SETUP

14

General Information

Password Protected Screens

Some of the operating displays on the Human Interface LCD screen are intended to be accessed by qualified users only,
and require a password to change. The following screens display the various programming sections that require a password
in order to view or to modify the preset operating parameters. The password for each screen is a different series of + (Plus)
or - (Minus) key strokes in a predefined sequence. Shown below are the password protected screens, and the passwords for
accessing them.

The following screens display the various programming sections that require a
specific PASSWORD to be entered by a qualified operator in order to view or
to modify the operating parameters.

The following screen will appear if the PASSWORD is not entered within approximately
15 seconds.

Password Entry Time Limit Exceeded

1. Press the NEXT key until the following screen is displayed.

Configuration is Password Protected

Please Enter Pasword:

2. Press the + or - keys in this sequence ( + - - - ) to access this restricted screen.

3. Press the ENTER key to confirm the password and enter the menu.

4. Press the NEXT key until the following screen is displayed.

Dia gnostic Re set is Password Pr otected

Please Enter Pasword:

1. Press the + or - keys in this sequence ( - + + ) to access this restricted screen.

2. Press the ENTER key to confirm the password and Lock the definitions.

3. Press the NEXT key until the following screen is displayed.

Diagnostic Log is Password Protected

Please Enter Pasword: __________

1. Press the + or - keys in this sequence ( - + + -) to access thi s restricted screen.

2. Press the ENTER key to confirm the password and Lock the definitions.

3. Press the NEXT key until the following screen is displayed.

15

System Operating Status

See "General Status" Display Description

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Active Ice Build Terminate STP = 0 - 99 F

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STATUS Menu

The STATUS menu is used to view various operating condi­tions such as temperatures and humidity levels. It’s used to
view unit component status such as fan, compressor,
heater, and economizer operation, as well as setpoint sta­tus.

Press the STATUS key to enter into the status menu. The
"STATUS MODE" will automatically return to the power up screen
after 30 minutes, if no keys are pressed.

Cool 0 Solution Pump Off
Standb

1. Press the NEXT key to scroll forward thro ugh the status screens.

2. Press the PREVIOUS key to scroll backwards to view previously
displayed status screens.

3. Press the + (Plus) key while viewin
that screen to the custom menu. Refer to the custom menu for
the creation and maintenance of customized menus.

Active Leaving Solution Setpoint 55.0 F
Temp: Entering 55.0 F Leaving 50.0 F

This screen is displayed when the unit is in Ice Buildin

Active Ice Build Ter mina te STP 5 5.0 F
Temp: Entering 55.0 F Leaving 50.0 F

Diagnostics

any status screen to add

OR

.

The screens shown in this section are for example only.
Pressing the + (Plus) key while viewing any of the status
display screens will add that screen to the Custom menu.
When a status screen is displayed for 30 minutes without a
key being pressed, the LCD screen will revert to the general
operating status display. If this happens, press the STATUS
key again to return to the status menu. The following are
examples of status screens that may be viewed by pressing
the STATUS key.

Used on Units:
Possible Values:

Used on Units:
Possible Values:

Enteri n
Leavin

Used on Units:
Possible Values:

Enteri ng = 0 - 99.9 F
Leavin

All Units

All Units

Active Solution Setpoint = 0 - 99 F

= 0 - 99.9 F

= 0 - 99.9 F

All Units

= 0 - 99.9 F

Compressor Status Submenu
Press ENTER to View Data in This Submenu

1. Press the ENTER key to advance to the followin

2. Press the NEXT key to bypass this menu and advance to
"General Status Submenu"

screen.

Note:

The ran
are 0 to 99.9 F. "ERR" will appear if the
temperature is out of ran

Used on Units:

e for all temperature inputs

e.

All Units

16

System Operating Status

K3 - On, Off, Locked,

/

Suction range 0 - 100 PSIG

Comp Off

q

p

The following screens are displayed for 20 through 60 Ton units.

Compressor Relay K11 Off
Enabled

1. Press the NEXT key until the following screen is displayed. K11 - On, Off, Locked, or

Compressor Relay K12 Off
Enabled

1. Press the NEXT key until the following screen is displayed.

The following screens are displayed for 40 through 60 Ton units.

Compressor Relay K3 Off
Enabled

1. Press the NEXT key until the following screen is displayed.

Compressor Relay K4 Off
Enabled

Disabled By:

Bad Cond Temp Sensor Hot Start Operation
Bad Ent Soln Sensor Low Ambient Lockout
Bad Leav Soln Sensor Low Leav Soln Cutout
Compressor Protection Low Pressure Cutout
Compressor Protect LPC LPC Delay
Contactor Failure Minimum Off Time
Demand/Capacity Limit Over/Under Voltage
Evap Flow Protection Phase Loss/Reversal
Evap Limit Control Tracer Lockout

Used on Units:
Possible Values:

K4 - On, Off, L ocked,

K12 - On , Off, Locked

20 thru 60 Ton Units

1. Press the NEXT key until the following screen is displayed.

Compre ssor Module Ckt 1
Satura ted Conde nsor Temperature 8 1.0 F

1. Press the NEXT key until the following screen is displayed.
The following three screens are applicable when Superheat
Subcool Module is installed.

Refrigerant Ckt 1 - Temperature Data
Suction 75 .0 F Sat Liquid 81.0 F

1. Press the NEXT key until the following screen is displayed.

Refrigerant Ckt 1 - Pressure Data
Suction 72 PSIG Li

1. Press the NEXT key until the following screen is displayed. Comp Off

Refrigerant Circuit 1
Su

erhea t 28.0 F Subcooling 18.0 F

1. Press the NEXT key until the following screen is displayed.

The following screens are displayed for 40 through 60 Ton units.

Compressor Module Ckt 2
Saturated Condenser Temperature 97.0 F

uid 265 PSIG

Used on Units:
Possible Values:

Used on Units:
Possible Values:

Used on Units:
Possible Values:

Liquid range 0 - 400 PSIG

Used on Units:
Possible Values:

Used on Units:
Possible Values:

All Units

-40 to 200 F

With superheat/subcool module

-40 to 200 F

With superheat/subcool module

With superheat/subcool module

0 - 99.9 F

40 Thru 60 Ton Units

-40 to 200 F

17

1. Press the NEXT key until the following screen is displayed.

/

Suction range 0 - 100 PSIG

40 Thru 60 Ton Units

The following three screens are applicable when Superheat
Subcool Module is installed.

Refrigerant Ckt 2 - Temperature Data
Suction 72.0 F Sat Liquid 9 7.0 F

1. Press the NEXT key until the following screen is displayed.

Refrigerant Ckt 2 - Pressure Data
Suction 65 PSIG Liquid 251 PSIG

1. Press the NEXT key until the following screen is displayed.

Refrigerant C ircuit 2
Superheat 2 8.0 F Subcooling 18 .0 F

1. Press the NEXT key until the following screen is displayed.

Ckt 1 Liquid Line Solenoid Valve: OPEN

System Operating Status

Used on Units:
Possible Values:

Used on Units:
Possible Values:

Liquid range 0 - 400 PSIG
Comp Off

Used on Units:
Possible Values:

Comp Off

Used on Units:
Possible Values:

40-60 Ton Units with superheat/subcool module

-40 to 200 F

40-60 Ton Units with superheat/subcool module

40-60 Ton Units with superheat/subcool module

0 - 99.9 F

20, 25 & 30 Ton Units

Open, Closed

The following screen is displayed for 40 through 60 Ton units.

OR

Ckt 1 Liquid Line Sole noid Valve: OPEN
Ckt 2 Liquid Line Sole noid Valve: CLOSED

1. Press the NEXT key until the following screen is displayed.

Compressor 1A Phase Currents - Amps
Phase A 86 Phase B 84

1. Press the NEXT key until the following screen is displayed.

Compressor 1B Phase Currents - Amps
Phase A 81 Phase C 78

1. Press the NEXT key until the following screen is displayed.
The following screens are displayed for 40 through 60 Ton units.

Compressor 2A Phase Currents - Amps
Phase B 88 Phase C 90

1. Press the NEXT key until the following screen is displayed.

Compressor 2B Phase Currents - Amps
Phase A 93 Phase C 89

1. Press the NEXT key until the following screen is displayed.

End of Submenu (NEXT) to R e-enter STATU S

2. Pressing the NEXT key will display the beginning of
the Submenu.

3. Press the NEXT key again to advance to the following screen.

Used on Units:
Possible Values:

Used on Units:
Possible Values:

Used on Units:
Possible Values:

Used on Units:
Possible Values:

Used on Units:
Possible Values:

Open, Closed

All Units with Current Sensing Module

0 - 255

All Units with Current Sensing Module

0 - 255

40-60 Ton Units with Current Sensing Module

0 - 255

40-60 Ton Units with Current Sensing Module

0 - 255

General System Status Submenu
Press ENTER to View Data in This Submenu

1. Press the ENTER key until the following screen is displayed.

2. Press the NEXT key to bypass this menu and advance to
"Controlling Setpoint Status Submenu"

CGM Evap Solution Pump Relay: OFF
Evap Soln Flow Switch Proving: FLOW

1. Press the NEXT key until the following screen is displayed.

Used on Units:
Possible Values:

Evap Soln Flow Switch Proving = Flow, No Flow

All Units

CGM Evap So lu tion Pump Relay = On, Off

18

This screen is displayed on units with Brazed Plate.

Used on Units:

g

g

Used on Units:

With Ice Building Control

g

g

Used on Units:

g

g

g

MCM He at Tape Control Relay: OFF

1. Press the NEXT key until the followin

This screen is displayed when Hot Gas Bypass is installed.

CGM Hot Gas Bypass Control Relay: OFF

screen is displayed.

System Operating Status

Possible Values:

Used on Units:
Possible Values:

All Brazed Plate Units

On, Off

With Hot Gas Bypass option

On, Off

1. Press the NEXT key until the followin

CGM Ice Building Control R elay: ON

1. Press the NEXT key until the followin

This screen is displayed when Leavin
is selected.

Setpoint Value Measured
CGM Ext Leaving Soln STP Input is 4 4.0 F

1. Press the NEXT key until the followin

End Of Sub-Menu (NEXT) To Re-e nter STA TUS

2. Pressin
the Submenu.

3. Press the NEXT key a

the NEXT key will display the beginning of

ain to advance to the following screen.

screen is displayed.

screen is displayed.

Solution Setpoint Source

screen is displayed.

Controlling Setpoint Status Submenu
Press ENTER to View Data in This Submenu

1. Press the ENTER key until the following screen is displayed.

2. Press the NEXT key to bypass this menu and advance to
"Temperature Input Status Submenu"

Active Leaving Solution Setpoint From
EXT LEAVING SOLN STP INPUT is 55.0 F

1. Press the NEXT key until the following screen is displayed.
This screen is displayed when Ice Building is enabled.

Active Ice Build Terminate Setpoint From
HUMAN INTERFACE STP MENU is 33.0 F

Possible Values:

Source se le cted

Possible Values:

Used on Units:
Possible Values:

On, Off

With CGM Ext Leaving Soln Setpoint

0 - 99

All Units

Human Interface STP Menu,
Ext Leaving Soln STP Input,
GBAS 0-10 VDC Module,
GBAS 0-5 VDC Module,
BAS/NETWORK
Setpoi nt Range = 0 - 99.9 F

Used on Units:
Possible Values:

With Ice Building Option

Human Interface STP Menu,
Ext Leaving Soln STP Input,
GBAS 0-10 VDC Module,
GBAS 0-5 VDC Module,
BAS/NETWORK (Tracer) (TCI only)
Setpoi nt Range = 0 - 99.9 F

19

1. Press the NEXT key until the following screen is displayed.

Active Hot Start Load Limit Setpt From
HUMAN INTERFACE STP MENU is 78.0 F

1. Press the NEXT key until the following screen is displayed.

Activ e Capacity Limit Setpoint Fr om
HUMAN INTERFACE STP MENU is 63 %

1. Press the NEXT key until the following screen is displayed.

End of Submenu (NEXT) to Re-e nter STATUS

2. Pressing the NEXT key will display the beginning of
the Submenu.

3. Press the NEXT key again to advance to the following screen.

Temperature Input Status Submenu
Press ENTER to View Data in This Submenu

System Operating Status

Used on Units:
Possible Values:

GBAS 0-10 VDC Module,
GBAS 0-5 VDC Module,
Setpoint Range = 0 - 99.9 F

Used on Units:
Possible Values:

GBAS 0-10 VDC Module,
GBAS 0-5 VDC Module,
BAS/NETWORK
Setpoint Range = 0 - 99.9 F
Blank

All Units

Human Interface STP Menu,

With GBAS 5V or GBAS 10V or TCI or LCI

No Source Selected,

1. Press the ENTER key until the following screen is displayed.

2. Press the NEXT key to bypass this menu and advance to
"Misc Input Status Submenu"

Temp Measur ed By Sensor Connected To
CGM Entering Soln Temp Input 55 F

1. Press the NEXT key until the following screen is displayed.

Temp Measur ed By Sensor Connec te d To
CGM Leaving Soln Temp Input 50.0 F

1. Press the NEXT key until the following screen is displayed.

Temp Measured By Sensor Connected To
CGM Outside Air Temp Input 86.0 F

1. Press the NEXT key until the following screen is displayed.

Compressor Module Ckt 1
Saturated Condenser Temperature 81.0 F

1. Press the NEXT key until the following screen is displayed.

Refrigerant Ckt 1 - Temperature Data
Suction 75.0 F Sat Liquid 81.0 F

Used on Units:
Possible Values:

Used on Units:
Possible Values:

Used on Units:
Possible Values:

Used on Units:
Possible Values:

Used on Units:
Possible Values:

All Units

All Units

All Units

All Units

With Superheat/Subcooling installed

-40.0 to 200 F

-40.0 to 200 F

-40.0 to 200 F

-40.0 to 200 F

-40.0 to 200 F

1. Press the NEXT key until the following screen is displayed.
The following screens are displayed for 40 through 60 Ton units.

Compr essor Module Ckt 2
Saturated Condenser Temperature 97.0 F

20

Used on Units:
Possible Values:

40 through 60 Ton

-40.0 to 200 F

System Operating Status

With Ice Building Control Option

Suction =

Suction =

Refrigerant Ckt 2 - Temperature Data
Suction 72.0 F Sat Liquid 97.0 F

1. Press the NEXT key until the following screen is displayed.

Temp Measured By Sensor Connected To
CGM Zone Temp Input 75.0 F

1. Press the NEXT key until the following screen is displayed.

Temp Measured By Sensor Connected To
CGM ICS Temp Input 62.0 F

1. Press the NEXT key until the following screen is displayed.

End of Submenu (NEXT) to Re-enter STATUS

2. Pressing the NEXT key will display the beginning of
the Submenu.

3. Press the NEXT key again to advance to the following screen.

Misc Input Status Submenu
Press ENTER to View Data in This Submenu

1. Press the ENTER key until the following screen is displayed.

2. Press the NEXT key to bypass this menu and advance to
"GBAS 0-5VDC Module Status Submenu"

Used on Units:

40-60 Ton with Superheat/Subcooling

Module installed

Possible Values:

Used on Units:
Possible Values:

Used on Units:
Possible Values:

-40.0 to 200 F

All Units

-40.0 to 200 F

With TCI Module Installed

-40.0 to 200 F

CGM Ice Build Command Input: OFF

1. Press the NEXT key until the following screen is displayed.

CGM Evap Soln Flow Switch Input: FLOW

1. Press the NEXT key until the following screen is displayed.

Refrigerant Ckt 1 - Pressure Data
Suction 72 PSIG Liquid 265 PSIG

1. Press the NEXT key until the following screen is displayed.

Refrigerant Ckt 2 - Pressure Data
Suction 65 PSIG Liquid 251 PSIG

1. Press the NEXT key until the following screen is displayed.

Compressor 1A Phase Currents - Amps
Phase A 86 Phase B 84

1. Press the NEXT key until the following screen is displayed.

Compressor 1B Phase Currents - Amps
Phase A 81 Phase C 78

Used on Units:
Possible Values:

Used on Units:
Possible Values:

Used on Units:
Possible Values:

Liquid = 0.0 to 400.0 PSIG
Comp Off

Used on Units:
Possible Values:

Liquid = 0.0 to 400.0 PSIG
Comp Off

Used on Units: With
Possible Values:

Used on Units: With
Possible Values:

Off, Make Ice

All Units

Flo w, No Flo w

All Units with Superheat/Subcooling

0.0 to 100.0 PSIG

40 - 60 Ton Units with Superheat/Cooling

0.0 to 100.0 PSIG

Current Sensing Module

0 to 255

Current Sensing Module

0 to 255

21

System Operating Status

Output = On, Off

With GBAS 0-10 VDC Modul e

g

1. Press the NEXT key until the following screen is displayed.

Compressor 2A Phase Currents - Amps
Phase B 88 Phase C 90

1. Press the NEXT key until the following screen is displayed.

Compressor 2B Phase Currents - Amps
Phase A 93 Phase C 89

1. Press the NEXT key until the following screen is displayed.

End of Submenu ( NEXT) to Re-enter STATUS

2. Pressing the NEXT key will display the beginning of
the Submenu.

3. Press the NEXT key again to advance to the following screen.

This screen is displayed when GBAS 0-5 VDC Module is installed

GBAS 0-5VDC Module Status Submenu
Press ENTER to View Data in This Submenu

1. Press the ENTER key until the following screen is displayed.

2. Press the NEXT key to bypass this menu and advance to
"GBAS 0-10VDC Module Status Submenu"

GBAS 0-5VDC Analog Input 1 0.00 VDC
Assigned: NOT ASSIGNED

3. Press the NEXT key to display Generic BAS Analog Input Leaving Solution Setpoint
screens 2, 3, & 4. Ice Build Terminate Setpoint

4. Press the NEXT key to advance to the following screen. Hot Start Load Li mit Setpoint

Used on Units:
Possible Values:

Used on Units:
Possible Values:

Used on Units:
Possible Values:

Assignment = Not Assigned

Capacity Limit Setpoint

With Current Sensing Module on 40-60 Ton

0 to 255

With Current Sensing Module on 40-60 Ton

0 to 255

With GBAS 0-5VDC Module

Input = 0.00 to 5.00 VDC

GBAS (0-5VDC) Demand Limit Input Status
OPEN

1. Press the NEXT key until the following screen is displayed.

GBAS (0-5VDC) Binary Output 1 OFF
Assigned: OUTPUT IS NOT ASSIGNED

2. Press the NEXT key to display Generic BAS Binary Output Indicate any comp is running
screens 2, 3, 4 & 5. Indi cate unit at max capacity

3. Press the NEXT key to advance to the following screen. Indicate selected di ag alarms

End of Submenu ( NEXT) to Re-enter STATUS

1. Pressing the NEXT key will display the beginning of
the Submenu.

2. Press the NEXT key again to advance to the following screen.

This screen is displayed when GBAS 0-10 VDC Module is installed

GBAS 0-10VDC Module Status Submenu
Press ENTER to View Data in This Submenu

1. Press the ENTER key until the following screen is displayed.

2. Press the NEXT key to bypass this menu and advance to
"General Status" Display Screen.

GBAS 0-10VDC Analog Input 1 0.00 VDC
Assi

3. Press the NEXT key to display Generic BAS Analog Input Leaving Solution Setpoint
screens 2, 3 & 4. Ice Build Terminate Setpoint

4. Press the NEXT key to advance to the following screen. Hot Start Load Limit Setpoint

ned: NOT ASSIGNED

Used on Units:
Possible Values:

Used on Units:
Possible Values:

Assignment = Output Is Not Assigned

Used on Units:
Possible Values:

Assignment = Output Is Not Assigned

Capacity Limit Setpoint

With GBAS 0-5VDC Module

Open, Closed

With GBAS 0-5VDC Module

Output = 0.00 - 10.00 VDC

22

System Operating Status

Used on Units:

With GBAS 0-10 VDC Module

g

Used on Units:

With GBAS 0-10 VDC Module

g

g

g

Used on Units:

With GBAS 0-10 VDC Module

g

g

g

g

g

g

Open

g

GBAS (0-10VDC) Demand Limit Input Status

1. Press the NEXT key until the followin

GBAS (0-10VDC) Binary Output OFF

ned: OUTPUT IS NOT ASSIGNED

Assi

1. Press the NEXT key until the following screen is displayed.

GBAS 0-10VDC Analog Output 1 0.0 VDC
Assigned: NOT ASSIGNED

Assi

nment = Leaving solution temperature Assignment = Ckt1 liquid line pressure
Enterin
Ckt1 saturated condenser temp Ckt1 sat liquid temperature
Ckt2 saturated condenser temp Ckt2 sat liquid temperature
Ckt1 suction temperature ICS Defined temperature
Ckt2 suction temperature Outsi de air temperature
Ckt1 suction pressure Active Cooli n
Ckt2 suction pressure

2. Press the NEXT key to display Generic BAS Analo
screens 2, 3 & 4.

3. Press the NEXT key to advance to the followin

End of Submenu (NEXT) to Re-enter STATUS

screen is displayed.

solution temperature Ckt2 liquid line pressure

Output

screen.

Possible Values:

Possible Values:

Assi
Indicate selected dia
Indicate unit at max capacity
Indicate any comp is runnin

Possible Values:

Open, Closed

Output = On, Off

nment = Output Is Not Assigned

alarms

0.0 to 10.0 VDC

Capacity

4. Pressin
the Submenu.

5. Press the AUTO or STOP key to return to the top level
status information.

the NEXT key will display the beginning of

23

System Programming SETUP

After the unit is installed, the CGM must be programmed
with certain setup information (chilled solution setpoints, ON
and OFF times, system defaults, setpoint sources, etc...) in
order to operate and function properly. The data necessary
for unit operation will vary depending on certain factors
such as unit size, type, and installed options.

This section of the manual provides step by step instruc­tions for programming this information. Also provided are in­structions for checking unit operating status, accessing and
clearing diagnostics, and performing service tests.

Some of the displays shown in this manual may not appear
on the Human Interface (HI) LCD screen during program­ing. Only the applicable screens for the specific unit options
and operating parameters will be displayed.

Start with the first setup screen in the SETUP menu and
program the necessary information by completing the steps
located below each illustrated window. Information that per­tains to when the screens are applicable, the factory preset
values, and the possible values that may be designated is
located to the right of each programmable screen.

Ignore the steps that do not apply to your unit and applica­tion, and move on to the next applicable set of instructions
in the manual. Continue this process until all applicable
screens are programmed with the required information.

SETUP Menu

The setup menu is used to input initial operating information such as control parameters, functions enable/disable, text dis­play (language), temperature display (C or F), and system tuning parameters. When a setup screen is displayed for 30 min­utes without a key being pressed, the LCD screen will revert to the appropriate power-up display. If this happens, press the
SETUP key again to return to the setup menu.

1. Press the SETUP key to display the fol lowing screen.

Display Text in ENGLISH LANGUAGE

Display Units in ENGLISH

2. Press the + or - key until the proper "language" is displayed.

3. Press the ENTER key to confirm this choice.

4. Press the NEXT key to advance the cursor to the "Units"

5. Press the + or - key until the proper "language" is displayed.

6. Press the ENTER key to confirm this choice.

Used on Units:
Possible Values:

Units = SI, English

All

Text = English, French, Spanish

7. Press the NEXT key until the following screen is displayed.

Unit contr ol: LOCAL
Unit Address 4 9

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key to advance the cursor to the "Address" (TCI only)

4. Press the + or - key until the proper value is displayed. (TCI only)

5. Press the ENTER key to confirm this choice. (TCI only)

6. Press the NEXT key until the following screen is displayed.

Genera l Unit Functions Setup Submenu
Press ENTER to Review or Adjust

1.To view the factory preset or to modified the factory presets
to meet specific application requirements, press the
ENTER key to advance to the following screens. If no
adjustments are required, press the NEXT key to advance to
the "Ice Building Control Functions Submenu".

Reduce Multi-Unit Startup Power Demand.
After Power-Up, Dela y Unit Star t 0 Sec

2. Press the + or - key until the proper value is displayed.

3. Press the ENTER key to confirm this choice.

4. Press the NEXT key until the following screen is displayed.

Used on Units:
Possible Values:
Addres s:

Used on Units:
Possible Values:

All Units when TCI or LCI installed

All Units

Control = Local, BAS/NETWORK

33 to 63 (TCI only)

0 to 255 sec

24

System Programming SETUP

,

Dema nd Limit De finition: NON E
Reduce cooling capacity by this amount

1. Press the + or - key until the proper value is displayed. 25% - 2 Ckt Only

2. Press the ENTER key to confirm this choice. 50% - All Units

3. Press the NEXT key until the following screen is displayed. 75% - 2 Ckt Only

Compressor Lead/Lag Function: DISABLED
Stage C omp(s) Up/Down in Fixed Sequence

OR Note:

Compressor Lead/Lag Function: ENABLED
1st On = Least Starts, 1st Off = Most Runtime

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the following screen is displayed.

Hot Gas Bypass Function: DISABLED
Provides Cooling Level Less Than Cool 1

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice. Lead\Lag is Enabled.

3. Press the NEXT key until the following screen is displayed.

Hot Gas Bypass Max Run Time 30 Min
Max HGBP Duration Until Shut Off Comp

Used on Units:

GBAS10V or TCI

Possible Values:

100% - All Units

Used on Units:
Possible Values:

Lead\Lag can not be Enabled if Hot Gas

Bypass is Enabled.

Used on Units:

installed

Possible Values:
Note:

Hot Gas Bypass can not be Enabled if

Used on Units:
Possible Values:

All Units with GBAS5V,

None - All Units

All Units

Enabled, Disabled

With Ho t Gas Byp ass Option

Enabled, Disabled

With Ho t Gas Byp ass Option i nstalled

10 to 120 minutes

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the following screen is displayed.

Capacity=50% if LST exceeds Hot Strt STP
During Hot Start Time Interval: 60 Min

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the following screen is displayed.

Hot Operation Response Option:
50% CAPACITY PER CKT

1. Press the + or - key until the proper value is displayed. Allow normal operation

2. Press the ENTER key to confirm this choice. (Info Reset Diag)

3. Press the NEXT key until the following screen is displayed. Shut off co mpressors

Pumpdown Function: DISABLED

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the following screen is displayed.

Default Chiller Solution Pump Mode : ON
Pump Always ON Except for Emergency STOP

Default Chiller Solution Pump Mode : AUTO
Turn Pump ON As Requested By CGM Module

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

AUTO RESET DIAG

OR

Used on Units:
Possible Values:

Used on Units:
Possible Values:

(Auto Reset Dia g)

(Manu al Reset Diag)

Used on Units:
Possible Values:

Used on Units:
Possible Values:

All Units

10 to 120 minutes

All Units

50% Capacity per ckt

All Units

Enable, Disable

All Units

On, Auto

25

System Programming SETUP

g

g

All Units with Leaving Solution Reset

g

g

Start Temp OA: 46 - 125 F

Zone: 67 - 81 F

Zone: 66 - 80 F

g

g

g

pp

Evap Soln Pump Off Dela y time 30 Sec
Delay Pum p OFF Request By This Amount

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the following screen is displayed.

Loop Stabilization Time: 120 Sec
Run Pump To A llow Soln Te mp To Stabilize

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the following screen is displayed.

Low Ambient Compressor Lockout: ENABLED
Use Low Ambient Compressor Lockout STP

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the following screen is displayed.

Leaving Solution Reset Type:
NONE - NO RESET APPLIED

1. Press the + or - key until the proper value is displayed. Zone Temp Reset

2. Press the ENTER key to confirm this choice. Enterin

3. Press the NEXT key until the following screen is displayed.

The followin
ENT Soln Reset is selected.

Rese t Type: Outside Air Temp Reset
Start Tem p 70.0 F End Temp 50.0 F

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key to advance the cursor to the "End Temp" Reset Type: Outside Air Temp Reset

4. Press the + or - key until the proper value is displayed. Zone Temp Reset

5. Press the ENTER key to confirm this choice. Enterin

6. Press the NEXT key until the followin

Rese t Type: Outside Air Temp Reset
Maximum A mount of Reset A

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice. ENT Soln Temp Reset: 5 - 79 F

3. Press the NEXT key until the followin

Select Type of Cooling Control Based On
Chille r Application: PROCESS COOLING

two screens will display when either OA, Zone, or

screen is displayed.

lied 5 .0 F

screen is displayed. Max Amount (Zone, OA, ENT Soln Temp Reset): 3 - 16 F

Used on Units:
Possible Values:

Used on Units:
Possible Values:

Used on Units:
Possible Values:

Used on Units:
Possible Values:

Outside Air Temp Reset

Used on Units:
Possible Values:

ENT Soln Temp Reset: 6 - 80 F
End Temp OA: 45 - 124 F

All Units

30 to 600 seconds

All Units

30 to 255 seconds

All Units

Enable, Disable

All Units

None - No Reset Applied

Solutio n Temp Reset

Soln Temp Reset

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the following screen is displayed.

26

Used on Units:
Possible Values:

All Units

Comfort Coolin

, Process Coolin

System Programming SETUP

Enabled, Disabled

360 Min

j

g

pp

End of Submenu (NEXT) to Re-ente r SETUP

1. Pressing the NEXT key will display the beginning of
the Submenu.

2. Press the NEXT key again to advance to the following screen.
The following screens are displayed with Ice Buil ding Control Option.

Ice Building Cont rol Functions Submenu
Press ENTER to Review or Ad

1. To view the factory preset or to modify the factory presets
to meet specific appli cation requi rements, press the
ENTER key to advance to the following screens. If no
adjustments are required, press the NEXT key to advance to
the "Ice Building Control Functions Submenu".

Ice Building Function: DISABLED
Ice Buildin

2. Press the + or - key until the proper "Function" is displayed.

3. Press the ENTER key to confirm this choice.

4. Press the NEXT key to advance the cursor to the "Mode" Mode = One Time, Continuous

5. Press the + or - key until the proper value is displayed.

6. Press the ENTER key to confirm this choice.

7. Press the NEXT key until the following screen is displayed.

Interval Between Ice Building Cycles.
Ice Rebuild Delay Time 360 Min

Mode: ONE TIME

ust

Used on Units:
Possible Values:

Units with Ice Building Control Option

Function =

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the following screen is displayed.

End of Submenu (NEXT) to Re-ente r SETUP

1. Pressing the NEXT key will display the beginning of
the Submenu.

2. Press the NEXT key again to advance to the following screen.

Head Pressure Ctrl Setup Submenu
Press ENTER to Review or Adjust

1.To view the factory preset or to modified the factory presets
to meet specifi c application requi rements, press the
ENTER key to advance to the following screens. If no
adjustments are required, press the NEXT key to advance to
the "GBAS 0-5 VDC Module I/O Assignments"

Sat urat ed Condens er Temp Control Ba nd
Lower Limit 85 F U

2. Press the + or - key until the proper "LowerLimit" is displayed.

3. Press the ENTER key to confirm this choice.

4. Press the NEXT key to advance the cursor to the "Upper Limit" Upper Limit - 110 to 130 F

5. Press the + or - key until the proper value is displayed.

6. Press the ENTER key to confirm this choice.

7. Press the NEXT key until the following screen is displayed.

er Limit 125 F

Used on Units:
Factory Preset:
Possible Values:

Used on Units:
Possible Values:

Units with Ice Building Control Option

All Units

30 to 1410 Minutes

Lower Limit - 70 to 90 F

27

System Programming SETUP

(

Saturated Condens er Temp Control Band
Temporary Low Limit Suppress ion 10 F

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the following screen is displayed.

Saturated Condenser Temperature
Efficiency Check Point 110 F

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the following screen is displayed.

Saturated Condenser Temperature
Low Ambient Control Point 100 F

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the following screen is displayed.

Saturated Condenser Temperature
Low Ambient Control Deadband 4.0 F

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the following screen is displayed.

Saturated Condenser Temperature
OA Temp Supression Setpoint 40 F

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the following screen is displayed.

End of Submenu

NEXT) to Re-enter STATUS

Used on Units:

Possible Values:

Used on Units:
Possible Values:

Used on Units:
Possible Values:

Used on Units:
Possible Values:

Used on Units:
Possible Values:

All Uni ts

All Uni ts

All Uni ts

All Uni ts

All Uni ts

0 to 20 F

95 to 115 F

80 to 110 F

2.0 to 10.0 F

25 to 66 F, Disabled

1. Pressing the NEXT key will display the beginning of
the Submenu.

2. Press the NEXT key again to advance to the following screen.

This screen is displayed when GBAS 0-5 VDC Module is installed

GBAS 0-5VDC Module I/O Assignment
Press ENTER to Review or Adjust

1.To view the factory preset or to modified the factory presets
to meet specific application requirements, press the
ENTER key to advance to the following screens. If no
adjustments are required, press the NEXT key to advance to
"GBAS 0-10 VDC Module I/O Assignments"

GBAS (0-5VDC) Analog Input 1 Assignment
NOT ASSIGNED

2. Press the + or - key until the proper value is displayed. Hot Start Load Limit Setpoint

3. Press the ENTER key to confirm this choice. Capaci ty Li mit Setpoint

4. Press the NEXT key to display Generic BAS Analog Input
2 screen.

5. Press the + or - key until the proper value is displayed.

6. Press the ENTER key to confirm each choice.

7. Repeat steps 1 - 4 to display Generic BAS Analog Input
screens 2, 3 & 4.

8. Press the NEXT key to advance to the following screen.

Used on Units:
Possible Values:

Ice Build Terminate Setpoint

With GBAS 0-5VDC Module

Leaving Solution Setpoint

28

System Programming SETUP

With GBAS 0-5VDC Modul e

Not Assigned

k

j

GBAS (0-5VDC) Binary Output 1 Definition
OUTPUT IS NOT ASSIGNED

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the following screen is displayed. Indicate Selected Diag Alarms

The following screens will display if "Indicate selected diagnostics Indicate any comp is running
alarms" is assigned to any of the 5 Binary Output Definitions.

GBAS (0-5VDC) Output 1 Alarm Assignments
Press ENTER to Review or Ad

1.To view the factory preset or to modified the factory presets
to meet specific application requirements, press the
ENTER key. If no adjustments are required, press the NEXT

ey to advance to the following screen.

Assign Diag To GBAS (0-5V) Output #1 ?
Any Active Diagnostic (No)

2. Press the + or - key until the proper value is displayed. If "YES"

is assigned to "Any Active Diagnostic", pressing the NEXT key
will advance to the Binary Output 2 Definition screen. Assigning
"NO" to the "Any Active Diagnostic" will advance to the selectable
diagnostic screens.

3. Press the ENTER key to confirm each choice.

4. Press the NEXT key to scroll through each Active Diagnostic.

ust

Used on Units:
Possible Values:

Indi cate Uni t at Max Capacity

Used on Units:
Possible Values:

With GBAS 0-5VDC Modul e

Yes, No

Active Diagnostics

CGM ICS Temperature Sensor Fail Liquid Pressure Sensor Fail Ckt 1
CGM Module Data Storage Error Liquid Pressure Sensor Fail Ckt 2
CGM OA Temp Sensor Failure Low Ambient Evap Soln Pump Override
CGM Zone Temp Sensor Failure Low Soln Cutout Temp (Man)
Ckt 1 Pumpdown Terminated by Time Low Soln Cutout Temp (Auto)
Ckt 2 Pumpdown Terminated by Time Low Press Control Open - Ckt 1
Comp Contactor Fail - Ckt 1 Low Press Control Open - Ckt 2
Comp Contactor Fail - Ckt 2 LSS Adjusted To Maintain Min Diff
Compressor Trip - Ckt 1 EST/LST Low Temperature Indication

Compressor Trip - Ckt 2 MCM Communications Failure
Comp Protection LPC Open - Ckt 1 Sat Liquid Temp Sensor Fail Ckt 1
Comp Protection LPC Open - Ckt 2 Sat Liquid Temp Sensor Fail Ckt 2
Cond Temp Sensor Failure - Ckt 1 SCM Communications Failure
Cond Temp Sensor Failure - Ckt 2 Suction Pressure Sensor Fail Ckt 1
Current Sensor Module Comm Fail Suction Pressure Sensor Fail Ckt 2
Emergency Stop Suction Temp Sensor Failure - Ckt 1
Evap Enteri ng Soln Temp Sensor Fail Suction Temp Sensor Failure - Ckt 2
Evap Leaving Soln Temp Sensor Fail Superheat/Subcool Module Comm Fail
Evap Solution Flow Proving Switch BAS Module Comm Failure
Evap Solution Flow Loss BAS/NETWORK Comm Failure
Extern Leaving Soln STP Input Fail Unit HI Communications Failure
GBAS 0-5VDC Module Comm Failure
GBAS 0-10VDC Module Comm Fail
Hot Start Load Limit (Auto)
Hot Start Load Limit (Info)
Hot Start Load Limit (Man)
Hot Start Load Limit STP Fail
IBTS Adjusted To Maintain Min Diff
Ice Build Terminate Setpoint Fail
Leaving Solution Setpoint Fail

29

1. Press the NEXT key to display Generic BAS Binary Output

With GBAS 0-5VDC Module

g

g

g

g

g

g

g

g

With GBAS 0-10VDC Module

g

g

g

g

g

g

j

2 Definition screen.

GBAS (0-5VDC) Binary Output 2 Definition

System Programming SETUP

2. Press the + or - key until the proper value is displayed.

3. Press the ENTER key to confirm this choice.

4. Press the NEXT key to display Generic BAS Binary Output Indicate Selected Di a
3 screen. Indicate Unit at Max Capacity

5. Press the + or - key until the proper value is displayed. Indicate any comp is runnin

6. Press the ENTER key to confirm each choice.

7. Repeat steps 1 - 4 to display Generic BAS Binary Output
screens 3, 4 & 5.

8. Press the N EXT key to advance to the follow in

End of Submenu (NEXT) to Re-enter SETUP

1. Pressin
the Submenu.

2. Press the NEXT key a

This screen is displayed when GBAS 0-10 VDC Module is installed

GBAS 0-10VDC Module I/O Assignments

1.To view the factory preset or to modified the factory presets
to meet specific application requirements, press the
ENTER key. If no adjustments are required, press the NEXT
key to advance to the "CGM Alarm Output Diagnostic
Assignments"

GBAS (0-10VDC) Analog Input 1 Assignment
NOT A SSIGNED

2. Press the + or - key until the proper value is displayed.

3. Press the ENTER key to confirm this choice.

4. Press the NEXT key to display Generic BAS Analo
2 screen. Ice Build Terminate Setpoint

5. Press the + or - key until the proper value is displayed. Hot Start Load Limit Setpoint

6. Press the ENTER key to confirm each choice. Capacity Limit Setpoint

7. Repeat steps 1 - 4 to display Generic BAS Analo
screens 2, 3 & 4.

8. Press the N EXT key to advance to the following scree n.

GBAS (0-10VDC ) Binary Output Definition
OUTPUT IS NOT A SSIGNED

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the followin

The followin
alarms" is assigned.

GBAS (0-10VDC) Output Alarm Assignments
Press ENTER to Review or Ad

1.To view the factory preset or to modified the factory presets
to meet specific application requirements, press the
ENTER key to advance to the followin
adjustments are required, press the NEXT key to advance to
the GBAS Anal o

the NEXT key will display the beginning of

ain to advance to the following screen.

screen i s displayed . Indicate Sele cted Diag Alarms

screen will display if "Indicate selected dia

ust

screens. If no

Output Assignment screen.

screen.

Input Leaving Solutio n Setpoin t

Inp ut

Used on Units:
Possible Values:

Used on Units:
Possible Values:

Used on Units:
Possible Values:

Indicate Unit at Max Capa city
Indicate any comp is runnin

Outp ut is Not Assigned

Alarms

With GBAS 0-10VDC Module

Not Assi

Output is Not Assigned

ned

30

System Programming SETUP

With GBAS 0-10VDC Module

With GBAS 0-10VDC Module

(

y

)

Assign D iag To GBAS (0-10V) Output ?
Any Ac tive D iagnostic (No)

2. Press the + or - key until the proper value is displayed. If "YES"
is assigned to "Any Active Diagnostic", pressing the NEXT key
will advance to the "End of Submenu" screen.
Assigning "NO" to the "Any Active Diagnostic" will advance to
the selectable diagnostic screens. See 0-5 active diagnostics list.

3. Press the ENTER key to confirm each choice.

4. Press the NEXT key to scroll through each Active Diagnostic.

GBAS (0 -10VDC) Analog Output 1 Assignment
NOT ASSIGN ED

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

Used on Units:
Possible Values:

Used on Units:

Yes, No

GBAS (0-10VDC) Analog Output 2 Assignment
NOT ASSIGN ED

1. Press the + or - key until the proper value is displayed. Ckt 1 Sat Cond Temp

2. Press the ENTER key to confirm this choice. Ckt 2 Sat Cond Temp

3. Press the NEXT key until the following screen is displayed. Ckt 1 Sat Liquid Temp

4. Press the NEXT key to display Generic BAS Analog Output Ckt 2 Sat Liquid Te mp
3 screen. Ckt 1 Suction Pressure

5. Press the + or - key until the proper value is displayed. Ckt 2 Suctio n Pressure

6. Press the ENTER key to confirm each choice. Ckt 1 Su ction Temperature

7. Repeat steps 1 - 4 to display Generic BAS Analog Output Ckt 2 Suction Temperature
screens 3 & 4. Enteri ng So lution Temperature

8. Press the NEXT key to advance to the foll owing screen. ICS Define d Temperature

End of Submenu

1. Pressing the NEXT key will display the beginning of
the Submenu.

2. Press the NEXT key again to advance to the following screen.

CGM Alarm Output D iagnostic Assignments

1.To view the factory preset or to modified the factory presets
to meet specific application requirements, press the
ENTER key to advance to the fo llowing scree ns. If no
adjustments are required, press the NEXT key to advance to
the "Device Characteristic Setup Definitions" screen.

Assign D iagnostic to CGM Alarm Output?
An

Active Diagnostic (No

2. Press the + or - key until the proper value is displayed. If "YES"
is assigned to "Any Active Diagnostic", pressing the NEXT key
will advance to the "End of Submenu" screen.
Assigning "NO" to the "Any Active Diagnostic" will advance to
the selectable diagnostic screens. See the active diagnostics
list in the GBAS 0-5V section.

3. Press the ENTER key to confirm this choice.

4. Press the NEXT key until the following screen is displayed.

1. Pressing the NEXT key will display the beginning of
the Submenu.

2. Press the NEXT key again to advance to the following screen.

NEXT) to Re-enter SETUP

-

Possible Values:

Ckt 1 Liqui d Line Pressure

Ckt 2 Liqui d Line Pressure

Leaving Solution Temperature
Outside Air Te mperature

Used on Units:
Possible Values:

Active Cooling Capacity

All Units

Yes, No

31

All Units

All Units

All Units

40 - 60 Ton Units

40 - 60 Ton Units

Device Characteristic Setup Definitions
Press ENTER to Review or Adjust

1.To view the factory preset or to modified the factory presets
to meet specific application requirements, press the
ENTER key to advance to the following screens. If no
adjustments are required, press the NEXT key to advance to
the "Control Al gori thm Tuning Paramete rs".

Actuator Setup Ckt1 Low Ambient Output
Max Stroke Tim e 60 Sec

2. Press the + or - key until the proper value is displayed.

3. Press the ENTER key to confirm this choice.

4. Press the NEXT key until the following screen is displayed.

Actuator Setup Ckt1 Low Ambient Output
Min Voltage 2 VDC

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the following screen is displayed.

Actuator Setup Ckt1 Low Ambient Output
Max Voltage 10 VDC

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the following screen is displayed.

Actuator Setup Ckt 1 Low Ambient Output
Direct/Reverse Act DIRECT ACTING

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the following screen is displayed.

Actuator Setup Ckt 2 Low Ambient Output
Max Stroke Tim e 60 Sec

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the following screen is displayed.

Actuator Setup Ckt 2 Low Ambient Output
Min Voltage 2 VDC

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the following screen is displayed.

Actuator Setup Ckt 2 Low Ambient Output
Max Voltage 10 VDC

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the following screen is displayed.

Actuator Setup Ckt 2 Low Ambient Output
Direct/Reverse Act DIRECT ACTING

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the following screen is displayed.

System Programming SETUP

Used on Units:

Possible Values:

Used on Units:
Possible Values:

Used on Units:

Possible Values:

Used on Units:

Possible Values:

Used on Units:
Possible Values:

Used on Units:

Possible Values:

Used on Units:
Possible Values:

Used on Units:

Possible Values:

1 to 255 Seconds

All Units

0 - 10 VDC

0 - 10 VDC

Direct Acting/Reverse Acting

40 - 60 Ton Units

1 to 255 Seconds

0 - 10 VDC

40 - 60 Ton Units

0 - 10 VDC

Direct Acting/Reverse Acting

32

System Programming SETUP

g

0 PSIG - 0.000 to 4.000 VDC

g

g

0 PSIG - 0.000 to 4.000 VDC

g

40-60 Ton With Superheat/Subcooling

0 PSIG - 0.000 to 4.000 VDC

g

40-60 Ton With Superheat/Subcooling

0 PSIG - 0.000 to 4.000 VDC

g

g

g

g

g

All Units

g

j

g

Ckt 1 Suction Line Pressure Transducer
0 PSIG= 0.118 VDC 100 PSIG= 4.847 VDC

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key to ad vance the cursor to the "1 00 PSIG"

4. Press the + or - key until the proper value is displayed.

5. Press the ENTER key to confirm this choice.

6. Press the NEXT ke y until the followin

Ckt 1 Liquid Line Pressure Transducer
0 PSIG= 0.118 VDC 400 PSIG= 4.847 VDC

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key to ad vance the cursor to the "4 00 PSIG"

4. Press the + or - key until the proper value is displayed.

5. Press the ENTER key to confirm this choice.

6. Press the NEXT ke y until the followin

Ckt 2 Suction Line Pressure Transducer
0 PSIG= 0.118 VDC 100 PSIG= 4.847 VDC

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key to ad vance the cursor to the "1 00 PSIG"

4. Press the + or - key until the proper value is displayed.

5. Press the ENTER key to confirm this choice.

6. Press the NEXT ke y until the followin

Ckt 2 Liquid Line Pressure Transducer
0 PSIG= 0.118 VDC 400 PSIG= 4.847 VDC

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key to ad vance the cursor to the "4 00 PSIG"

4. Press the + or - key until the proper value is displayed.

5. Press the ENTER key to confirm this choice.

6. Press the NEXT ke y until the followin

End of Submenu (NEXT) to Re-enter STA TUS

screen is displayed.

screen is displayed.

screen is displayed.

screen is displayed.

Used on Units:
Possible Value s:

100 PSIG - 1.000 to 5.000 VD C

Used on Units:
Possible Value s:

400 PSIG - 1.000 to 5.000 VDC

Used on Units:
Possible Value s:

100 PSIG - 1.000 to 5.000 VD C

Used on Units:
Possible Value s:

400 PSIG - 1.000 to 5.0 00 VD C

With Superheat/Subcoolin

With Superheat/Subcoolin

Option

Option

1. Pressin
the Submenu.

2. Press the NEXT key a

Control Algorithm Tuning Parame ters
Press ENTER to Review or Ad

1.To view the factory preset or to modified the factory presets
to meet specific application requirements, press the
ENTER key to advance to the follow in
adjustments are required, press the NEXT key to advance to
the be

Comfort Cooling
Desi

2. Press the + or - key until the proper value is displayed.

3. Press the ENTER key to confirm this choice.

4. Press the NEXT ke y until the followin

the NEXT key will display the beginning of

ain to ad vance to the fol lowing screen.

ust

screens. If no

inning of the "Setup" menu.

n Delta Temperature Setpoint 10.0 F

screen is displayed.

33

Used on Units:
Possible Value s:

4.0 to 20.0 F

System Programming SETUP

g

g

g

g

g

g

Pos sible Va lues:

EN TER key to ad va nce to the foll owi ng screens. If no
adjustments are required, press the NEXT key to advance to
the be

Com fort Cooling
Design Delta Temperature Setpoint 10.0 F

2. Press the + or - key until the proper value is displayed.

3. Press the ENTER key to confirm this choice.

4. Press the NEXT key until the followin

Com fort Cooling
Control Re sponse Setpoint 25

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the followin

Proces s Cooling C ontrol Gains
Proportional 25 % /F Reset Time 90s

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key to advance the cursor to the "Reset Time"

4. Press the + or - key until the proper value is displayed.

5. Press the ENTER key to confirm this choice.

6. Press the NEXT key until the followin

Proces s Cooling C ontrol Gains
Proport Bias 0% Max C y Rate 1 5.0 cph

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key to advance the cursor to the "Max Cy
Rate ".

4. Press the + or - key until the proper value is displayed.

5. Press the ENTER key to confirm this choice.

6. Press the NEXT key until the followin

Low Am bient Fan Control Gain
Proportional 2.0 % /F Reset Time 90 Sec

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key to advance the cursor to the "Reset Time"

4. Press the + or - key until the proper value is displayed.

5. Press the ENTER key to confirm this choice.

6. Press the NEXT key until the followin

Low Am bient Fan Control Gain
Rate Tim e 0 Se c

1. Press the + or - key until the proper value is displayed.

inning of the "Setup" menu.

screen is displayed.

screen is displayed.

screen is displayed.

screen is displayed.

screen is displayed.

Used on Units:

Pos sible Va lues:

Used on Units:

Pos sible Va lues:

Used on Units:

Pos sible Va lues:

Reset Time 30 to 3600 Sec

Used on Units:

Pos sible Va lues:

Ma x C y Ra te - 1.5 to 2 0.0 cph

Used on Units:

Pos sible Va lues:

Reset Time 5 to 60 0 Se c

Used on Units:

All Units

4.0 to 20.0 F

All Units

1 to 128

All Units

Proportional 2.0 to 200.0

All Units

Proport Bias 0 to 400%

All Units

Proportional 0.2 to 20.0

All Units

0 to 50

34

System Programming SETPOINTS

g

g

g

g

g

g

g

g

g

g

g

All Brazed Plate Units

g

g

g

g

g

g

g

p

p

p

p(s)

p

SETPOINTS Menu

When a setpoint screen is displayed for 30 minutes without
a key being pressed, the LCD screen will revert to the gen-

The SETPOINTS menu is used to designate default
setpoints, low ambient compressor lockout setpoints and

eral operating status display. If this happens, press the
SETPOINT key again to return to the setpoint menu.

select setpoint sources.

These setpoints will be active (in use) for the "Setpoint
Source Selection" designated as "DEFAULT" for these in­puts.

HI Leaving Solution Setpoint: 44 F

1. Press the + or - key until the proper value is displayed. Ran

2. Press the ENTER key to confirm thi s choice. Ran

3. Press the NEXT key until the followin

Stop Ice Making When Ent Soln Temp Below
Hi Ice Build Terminate Set

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the followin

Comp(s) OFF if Solution Temp Below
Low Solution Cutout Tem

1. Press the + or - key until the proper value is displayed. Solution Setpoint’

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the followin

Heat Output ON When EST or LST Less Than
Heat Ta

1. Press the + or - key until the proper value is displayed. Solution Setpoint’

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the followin

e Temperature Setpoint: 40.0 F

oint: 27.0 F

: 35.0 F

screen i s displayed. Range 20.0 - 29.0°F

screen is displayed.

screen is displayed.

screen is displayed.

Used on Units:
Possible Values:

Ran

Ran

Used on Units:
Possible Values:

Used on Units:
Possible Values:

Note: Maximum settin

Used on Units:
Possible Values:

Note: Maximum settin

All Units

Based on Confi

Units with Ice Buildin

20.0 to 31.0 F

All Units

-10.0 to 60.0 F

0 to 45.0 F

ured Leaving Solution STP Range:
e 51.0 - 65.0°F
e 40.0 - 50.0°F
e 30.0 - 39.0°F

e 10.0 - 75.0°F (SPECIAL)

Control Option

may be limited by ’Hi Leavin

may be limited by ’Hi Leavin

HI Hot Start Load Limit Setpoint: 71.0 F

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the followin

Request Pump ON When OA Temp Less Than
Low Ambient Pum

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the followin

Low Ambient Comp Lockout Temp: 40 F
Com

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the followin

Use Leav ing Solution Se tpoint
From: HUMAN INTERFACE STP MENU

1. Press the + or - key until the proper value is displayed. GBAS 0-10VDC Module

2. Press the ENTER key to confirm thi s choice. Ext Leavin

OFF if OA Temp Below This Value

Overr ide Temp: 35 F

screen is displayed.

screen is displayed.

screen is displayed.

Used on Units:
Possible Values:

Used on Units:
Possible Values:

Used on Units:
Possible Values:

Used on Units:
Possible Values:

GBAS 0-5VDC Module

All Units

60.0 to 80.0 F

All Units

-20.0 to 50.0 F

All Units

-20.0 to 60.0 F

All Units

Human Interface STP Menu

Soln STP Input

35

System Programming SETPOINTS

Used on Units:

Used on Units:

Used on Units:

3. Press the NEXT key until the following screen is displayed.

Use Ic e Building Te rminate Setpoint
From: HUMAN INTERFACE STP MENU

1. Press the + or - key until the proper value is displayed. GBAS 0-10VDC Module

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the following screen is displayed.

Use Hot Star t Load Limit Se tpoint
From: HUMAN INTERFACE STP MENU

1. Press the + or - key until the proper value is displayed. GBAS 0-10VDC Module

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the following screen is displayed.

Use Capacity Limit Setpoint
From: NO SOURCE SELECTED

1. Press the + or - key until the proper value is displayed. GBAS 0-10VDC Module

2. Press the ENTER key to confirm this choice.

3. Pressing the NEXT key will return to the 1st SETPOINT
screen.

4. Press the AUTO or STOP key to return to the top level
status information screen.

Possible Values:

GBAS 0-5VDC Module

Possible Values:

GBAS 0-5VDC Module

Possible Values:

GBAS 0-5VDC Module

With Ice Building Control Option

Human Interface STP Menu

All Units

Human Interface STP Menu

With GBAS5V or GBAS10V

No Source Selected

36

CONFIGURATION Menu

Used on Units:

20, 25, 30, 40, 50, 60

Used on Units:

Used on Units:

Installed, Not Installed

Used on Units:

51-65 F, 40-50 F, 30-39 F,

20-29 F, Special

Used on Units:

Installed, Not Installed

Used on Units:

Installed, Not Installed

Used on Units:

Installed, Not Installed

Used on Units:

Installed, Not Installed

g

System Configuration

The CGM controlled unit has many operating functions
whose settings are preset at the factory. The following con­figuration programming steps are provided for those cases
where the Human Interface module has been replaced after
the unit has been in operation and must be reconfigured.

Press the CONFIGURATION key to display the following
screens. Check the unit model number and compare it to the
data that is displayed in the following screens

Configuration - Model Num Digit 5,6,7
Unit Capacity 50

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the following screen is displayed.

Configuration - Model Num Digit 8
Line Voltage 460 VAC

1. Press the + or - key unti l the proper value is displayed. Special Voltage

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the following screen is displayed.

Configuration - Model Num Digit 11
Ice Buildin

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the following screen is displayed.

Configuration - Model Num Digit 11
Leaving Solution STP Range 40 - 50 F

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the following screen is displayed.

Configuration - Model Num Digit 13+
Hot Gas Bypass Option INSTALLED

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the following screen is displayed.

Configuration - Model Num Digit 13+

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the following screen is displayed.

Configuration - Model Num Digit 13+
GBAS 0-10VDC Module INSTALLED

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the following screen is displayed.

Configuration - Model Num Digit 13+

Control INSTALLED

-

Refer to the Model number stamped on the unit nameplate
located on the control panel door while scrolling through the
configuraton screes. Certain digits of this alpha/numeric
model number provide information that must be entered at
the Human Interface (HI) in order for the CGM network to
operate properly.

All Units

Possible Values:

All Units

Possible Values:

415 VAC, 460 VAC, 575 VAC,

Possible Values:

Possible Values:

Possible Values:

Possible Values:

Possible Values:

Possible Values:

200 VAC, 230 VAC, 380 VAC,

All Units

All Units

All Units

All Units

All Units

All Units

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

37

System Configuration

All Units

Installed, Not Installed

All Units

Installed, Not Installed

All Units

Installed, Not Installed

All Units

20 to 30 Ton Units

40 to 60 Ton Units

With GBAS 10VDC Module

3. Press the NEXT key until the following screen is displayed.

Configuration - Model Num Digit 13+
Curre nt Sensing Module IN STALLED

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the following screen is displayed.

Configuration - Model Num Digit 13+
BAS Communications Module INSTALLED

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the following screen is displayed.

Configuration - Model Num Digit 13+
Remote Human Interface INSTALLED

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the following screen is displayed.

The following displays are not editable.

Software Revision Number Report:
Cold Gener ator Module (CGM) 1.00

1. Press the NEXT key until one of the following screens is displayed.

Software Revision Number Report:
Single Compress or Module (SCM) 1.00

OR

Software Revision Number Report:
Multiple Compressor Module (MCM) 1.00

1. Press the NEXT key until the following screen is displayed.

Software Revision Number Report:
GBAS 0-5VDC Module 1.0 0

1. Press the NEXT key until the following screen is displayed.

Software Revision Number Report:
GBAS 0-10VD C Module 1 .00

1. Press the NEXT key until the following screen is displayed.

Software Revision Number Report:
Superheat/Subcool Module (SSM) 1.00

Used on Units:
Possible Values:

Used on Units:
Possible Values:

Used on Units:
Possible Values:

Used on Units:
Possible Values:

Used on Units:
Possible Values:

Used on Units:
Possible Values:

Used on Units:
Possible Values:

Used on Units:
Possible Values:

Used on Units:
Possible Values:

With GBAS 5VDC Module

With SSM Module

1.0 or Greater

1.0 or Greater

1.0 or Greater

1.0 or Greater

1.0 or Greater

1.0 or Greater

38

1. Press the NEXT ke y until th e following screen is displayed.

g

g

g

g

Software Revision N umber Report:
Curre nt Sensing Module (CSM) 1.00

1. Press the NEXT ke y until th e followin

Software Revision N umber Report:
Unit Human Interfac e (HI) 1.00

1. Press the NEXT ke y until th e followin

Software Revision N umber Report:
Remote Huma n Interface (RHI) 1.00

1. Press the NEXT ke y until th e followin

Software Revision N umber Report:
BAS Communications: Comm3 1.00

1. Pressin
CONFIGURATION screen.

2. Press the AUTO or STOP ke y to return to the top level
status info rmation screen.

the NEXT key will return to the 1st

screen is displayed.

screen is displayed.

screen is displayed.

System Configuration

Used on Units:
Possible Value s:

Used on Units:
Possible Value s:

Used on Units:
Possible Value s:

Used on Units:
Possible Value s:

Comm5 (with LC I module )

Possible Value s:

With CSM Module

1.0 or Greater

All Units

1.0 or Greater

With Re mote H uman Inte rface Module

1.0 or Greater

With TCI o r LCI Module

Comm3 (with TCI module)

1.0 or Greater

39

System Testing & Troubleshooting

All Units

All Units

All Units

With Ho t Gas Byp ass Option

SERVICE MODE Menu

The SERVICE MODE menu is used to input operating pa­rameters for unit operation during a service test. Depending
on the particular test being conducted, the user will cycle
through all unit outputs (compressors, fans, pump, etc...)
and selectively turn them On or Off for the test. After desig­nating the operating status for each unit component, the op­erator will designate the "TEST START" delay time.

To operate the system in the TEST MODE, press the SERVICE
MODE key to enter into the service mode menu and scroll
through all of the system outputs and selectively turn them
"On" or "Off".

CGM Eva p Solution Pump R elay: OFF

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the following screen is displayed.

Liquid Line Solenoid Valve Ctrl Relays:
Ckt 1 ON Ckt 2 OFF

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key to advance the cursor to the "Ckt 2"

Circuit 2 is use d for 40 through 60 Ton units only.

4. Press the + or - key until the proper value is displayed.

5. Press the ENTER key to confirm this choice.

6. Press the NEXT key until the following screen is displayed.

Low Ambient LPC Bypass Relay(s)
Ckt 1 ON Ckt 2 OFF

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key to advance the cursor to the "Ckt 2"

Circuit 2 is use d for 40 through 60 Ton units only.

4. Press the + or - key until the proper value is displayed.

5. Press the ENTER key to confirm this choice.

6. Press the NEXT key until the following screen is displayed.

CGM Hot Gas Bypass Control Relay: OFF

When a service mode screen is displayed for 30 minutes
without a key being pressed, the LCD screen will revert to
the general operating status display. If this happens, press
the SERVICE MODE key again to return to the service
menu.

Used on Units:
Possible Values:

Used on Units:
Possible Values:

Used on Units:
Possible Values:

Used on Units:
Possible Values:

On, Off

On, Off

On, Off

On, Off

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the following screen is displayed.

Compressor Relays
K11 OFF K 12 OFF

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key to advance the cursor to the "K11"

4. Press the + or - key until the proper value is displayed.

5. Press the ENTER key to confirm this choice.

6. Press the NEXT key until the following screen is displayed.

40

Used on Units:
Possible Values:

20 to 3 0 Ton

On, Off

System Testing & Troubleshooting

g

40 to 60 To n

g

g

g

40 to 60 To n

g

g

g

OR

The followin

Compress or R elays
K11 OFF K 12 OFF K3 OFF K4 OFF

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm thi s choice.

3. Press the NEXT key to advance the curso r to the "K12"

4. Press the + or - key until the proper value is displayed.

5. Press the ENTER key to confirm thi s choice.

6. Press the NEXT key to advance the curso r to the "K3"

7. Press the + or - key until the proper value is displayed.

8. Press the ENTER key to confirm thi s choice.

9. Press the NEXT key to advance the curso r to the "K4"

10. Press the + or - key until the proper value is displayed.

11. Press th e ENTER ke y to confirm this choice.

12. Pre ss the NEXT key until the followin

Condenser Fan Outputs
1A OFF 1B OFF 1C OFF

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm thi s choice.

3. Press the NEXT key to advance the curso r to the "1B"

4. Press the + or - key until the proper value is displayed.

5. Press the ENTER key to confirm thi s choice.

6. Press the NEXT ke y until th e followin

7. Press the + or - key until the proper value is displayed.

8. Press the ENTER key to confirm thi s choice.

9. Press the NEXT key to advance the curso r to the "2B"

screen will display on 40 to 60 Ton units.

screen is displayed.

screen is displayed.

Used on Units:
Possible Values:

Used on Units:
Possible Values:

All Units

On, Off

On, Off, Auto

The followin

Condenser Fan Outputs
2A OFF 2B OFF 2C OFF

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm thi s choice.

3. Press the NEXT key to advance the curso r to the "1B"

4. Press the + or - key until the proper value is displayed.

5. Press the ENTER key to confirm thi s choice.

6. Press the NEXT key to advance the curso r to the "2A"

7. Press the + or - key until the proper value is displayed.

8. Press the ENTER key to confirm thi s choice.

9. Press the NEXT key to advance the curso r to the "2B"

Condenser Fan Speed

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm thi s choice.

Circuit 2 is used for 40 through 60 Ton units only.

3. Press the NEXT key to advance the curso r to the "Ckt 2"

4. Press the + or - key until the proper value is displayed.

5. Press the ENTER key to confirm thi s choice.

6. Press the NEXT ke y until th e followin

MCM He ater Tape Relay K13: OFF
Relay ON: Heat Off, Rela y OFF: Heat On

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm thi s choice.

3. Press the NEXT ke y until th e followin

CGM Alarm Output: OFF

screen will display on 40 to 60 Ton units.

screen is displayed.

screen is displayed.

Used on Units:
Possible Values:

Used on Units:
Possible Values:

Note: Th is is the low ambient damper position

Used on Units:
Possible Values:

On, Off, Auto

All Units

Auto, 0 to 100%

All Brazed Plate Units

On, Off

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm thi s choice.

3. Press the NEXT ke y until th e followin

screen is displayed.

41

System Testing & Troubleshooting

0.0 to 1 0.0 VDC

0.0 to 1 0.0 VDC

3. Press the NEXT key until the following screen is displayed.

CGM Ice Build Relay Output : OFF

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the following screen is displayed.

GBAS 0-5VDC Module Relay Outputs
#1 OFF #2 OFF #3 OFF #4 OFF #5 OFF

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT ke y to advance the cu rsor to the "#2 Output"

4. Press the + or - key until the proper value is displayed.

5. Press the ENTER key to confirm this choice.

6. Repeat steps 1 - 4 for Outputs 3, 4 & 5.

7. Press the NEXT key until the following screen is displayed.

GBAS 0-10 VDC Module Relay Output: OFF

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT key until the following screen is displayed.

GBAS 0-10VDC Module Analog Outputs
Out #1 0.2 VD C Out #2 0.4 VDC

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT ke y to advance the cu rsor to the "#2 Output"

4. Press the + or - key until the proper value is displayed.

5. Press the ENTER key to confirm this choice.

6. Press the NEXT key until the following screen is displayed.

GBAS 0-10VDC Module Analog Outputs
Out #3 0.6 VD C Out #4 0.8 VDC

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

3. Press the NEXT ke y to advance the cu rsor to the "#4 Output"

4. Press the + or - key until the proper value is displayed.

5. Press the ENTER key to confirm this choice.

6. Press the NEXT key until the following screen is displayed.

CGM ICS C ontrolled Rela y: OFF

Used on Units:
Possible Value s:

Used on Units:
Possible Value s:

Used on Units:
Possible Value s:

Used on Units:
Possible Value s:

Used on Units:
Possible Value s:

Used on Units:
Possible Value s:

With Ice Bui lding Control Option

With GBAS 5VDC Mod ule Option

With GBAS 10VDC Mo dule Option

With GBAS 10VDC Mo dule Option

With GBAS 10VDC Mo dule Option

With TCI Module Op tion (For Future Use)

On, Off

On, Off

On, Off

On, Off

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

42

System Testing & Troubleshooting

All Units

5 to 255 seconds

All Units

All Units

All Units

g

3. Press the NEXT key until the following screen is displayed.

Start Test in 5 Sec
Press TEST START To Begin, STOP To Halt

1. Press the + or - key until the proper value is displayed.

2. Press the ENTER key to confirm this choice.

The following screen will be displayed after pressing the "TEST
START" key if a SERVICE MODE screen has been displayed
during the previous 60 minutes.

Test Start In 5

Press STOP To Halt

If a screen has not been displayed during the SERVICE MODE
procedure for 60 minutes and the TEST START key is pressed,
the following screen will be displayed.

Press SERVICE MODE

To Revie w Selections

When the START TEST timer expires, this screen will be displayed
at the unit mounted Human Interface and at the remote mounted
Human Interface, if installed.

Service Test Is Active

Press STOP To Ha lt

Note:

There is no time-out period when the unit is operating in the
SERVICE TEST mode. Press the "STOP" or "AUTO" key to
discontinue the Service Test. Only the STATUS, CUSTOM,
SERVICE MODE, DIAGNOSTICS, and STOP keys are functional
once the TEST START key has been pressed.

Sec

Used on Units:
Possible Values:

Used on Units:

Possible Values:

Used on Units:

Used on Units:

120 to 0 Seconds

After pressing the STOP or AUTO key, the following screen is displayed

Service Mode, STOP SYSTEM Restart

Communicatin

and then the following screen is displayed:

Updating Unit Data. Please Wait

TRANE INTELLIPAK

and then the top level status screen is displayed.

With Unit. Please Wait

43

System Testing & Troubleshooting

g

g

g

DIAGNOSTICS Menu

The DIAGNOSTICS menu is used to view diagnostics that
have resulted from system failures within the unit. There are
two lists where diagnostics reside; the Active list, and the
Diagnostic Event Log.

The Active list is used for viewing all active diagnostics and
for clearing manually resetable diagnostics. This list of diag­nostics are displayed after pressing the DIAGNOSTICS key
if active diagnostics are present.

Active manual diagnostics can be cleared in batch form at
the unit mounted Human Interface. When an Active diag­nostic is manually or automatically cleared, it is removed
from this buffer. Automatically resetting diagnostics can not
be reset by the Human Interface, because the condition
which caused the diagnostic has to be corrected for the di­agnostic to clear.

The word “MORE” is displayed on all screens if more than
one diagnostic exists, except for the last diagnostic. Upon
reaching the last diagnostic, the word “MORE” disappears.
Pressing the NEXT key at this point causes the display to
advance to the first diagnostic in the Diagnostic Event Log.

The Diagnostic Event Log screens are displayed after
scrolling through the Active list or after pressing the
DIAGNOSTICS key when no active diagnostics are present.
It’s used to view the past 20 diagnostics. Diagnostics in this

log are stacked in inverse chronological order, with the first
diagnostic screen being the most recently reported diagnos­tic.

When a new diagnostic is displayed, the words “NOT
VIEWED” are displayed with it. After viewing the last
unviewed diagnostic, the words "NOT VIEWED" change to
"VIEWED" for every diagnostic in the log. The diagnostic
will remain this way as long as it is in the log. This allows
the operator to distinquish between old and new diagnostics
in the Event Log.

Pressing the NEXT key after reaching the last diagnostic in
the Event Log advances the display to the first diagnostic in
the Active list if any exist. If not, the display reverts back to
the first Event Log diagnostic. If the Diagnostic Event Log is
full (20 events), and another diagnostic occurs, the oldest
diagnostic is pushed off the end of the list. If all 20 diagnos­tics in the list are active when the 21st occurs, then the old­est Active diagnostic is pushed off the end of the list. When
an Active diagnostic is automatically or manually cleared in
the Active buffer, its status in the Diagnostic Log changes
from Active to History. If the operator does not clear an ac­tive diagnostic in the Active log, its status will still show as
Active in the Diagnostic Log.

When a diagnostic screen is displayed for more than four
hours without a key being pressed, the screen will return to
the operating status display.

One of the following screens will be the first screen displayed when
the DIAGNOSTIC" key is pressed.

Diagnostic Menu ---- Info

No Active Dia

Press CANCEL to Clear All Active Manual

nostics, or Press NEXT to View

Dia

1. If there are active diagnostics, pressing the "CANCEL" key to clear
the diagnostics will prompt the following screen.

Diagnostic Reset Is Password Protected

Please Enter Password:

1. Press the + (Plus) or - (Minus) keys to enter the password

2. Press the ENTER key to confirm this choice. When the
correct password is entered, the following screen will be displayed.

nostics (NEXT) History Lo

OR

Used on Units:
Possible Values:

All Units

+ (Plus) and - (Minus)

44

System Testing & Troubleshooting

p

g

Resetting Active Manual Diagnostics

Sendin

and then the following screen will be displayed

Resetting Active Manual Dia gnostic s

U

and then the following screen will be displayed

Active Diagnostic ---- Info
"Please Wait . . . Unit Is In Reset Mode"

3. Pressing the "NEXT" key to view the diagnostics will prompt the
following screen if a "MANUAL RESET" failure has occurred.

Active Diagnostic ---- Manual Reset

The word MORE will only appear if more than one failure has
occurred.

Possible Values:

Comp Contactor Fail - Ckt 1 Evap Leaving Solution Temp Sensor Fail
Comp Contactor Fail - Ckt 2 Evap Entering Solution Temp Sensor Fail
Comp Prot - LPC Open (Ckt 1) Evap Solution Flow Loss
Comp Prot - LPC Open (Ckt 2) Hot Start Load Limit (Man)
Compressor Trip - Ckt 1 Low Solution Cutout Temp (Man)
Compressor Trip - Ckt 2 Low Pressure Control Open - Ckt 1
Emergency Stop Low Pressure Control Open - Ckt 2

Pressing the "NEXT" key to view the diagnostics will prompt the
following screen if an "AUTO RESET" failure has occurred.

Active Diagnostic ---- Auto Reset

The word MORE will only appear if more than one failure has occurred.

dating Unit Data, Please Wait

Reset Request

OR

More

OR

More

Used on Units:

Used on Units:

All Units

All Units

Possible Values:

CGM OA Temp Sensor Failure, IBTS Adjusted to Maintain Min Diff
CGM Zone Temp Sensor Failure, Ice Build Terminate Setpoint Fail
Cond Temp Sensor Failure - Ckt 1, Leaving Solution Setpoint Fail
Cond Temp Sensor Failure - Ckt 2, Low Ambient Evap Solution Pump Override
Current Sensing Module Comm Fail Low Solution Cutout Temp (Auto)
Evap Solution Flow Proving Switch LSS Adjusted to Maintain Min Diff
Ext. Leaving Solution STP Input Fail MCM Communications Failure
GBAS 0-5V Module Comm Failure SCM Communications Failure
GBAS 0-10V Module Comm Fail BAS Module Comm Fai l ure
Hot Start Load Limit (Auto) BAS/NETWORK Comm Failure
Hot Start Load Limit STP Fail Unit HI Communications Failure

OR

Pressing the "NEXT" key to view the diagnostics will prompt the following
screen if an "Information Only" failure has occured.

45

System Testing & Troubleshooting

Active Diagnostic ---- Info

The word MORE will only appear if more than one failure has
occured.
If additional active diagnostics are present, pressing the NEXT key will display them.

Possible Values:

CGM ICS Temperature Sensor Fail Sat Liquid Temp Sensor Fail Ckt 1
CGM Module Data Storage Error Sat Liquid Temp Sensor Fail Ckt 2
EST/LST Low Temperature Indication Suction Pressure Sensor Fail Ckt 1
Hot Start Load Limit (Info) Suction Pressure Sensor Fail Ckt 2
Liquid Pressure Sensor Fail Ckt 1 Suction Temp Sensor Fail Ckt 1
Liquid Pressure Sensor Fail Ckt 2 Suction Temp Sensor Fail Ckt 2
Pumpdown Terminated By Time Ckt 1 Superheat/Subcool Module Fail
Pumpdown Terminated By Time Ckt 2

After viewing all active diagnostics, pressing the NEXT key will display the following screen

Log 1 __________

Pressing the NEXT key will display each successive log entry. screens associated with the type of diagnostic.

1. Pressing the "CANCEL" key to clear the diagnostics log will
display the following screen.

Diagnostic Log Is Password Protected

Please Enter Password:

1. Press the + (Plus) or - (Minus) keys to enter the password

2. Press the ENTER key to confirm this choice. When the
correct password is entered, the following screen will be
displayed.

More

Used on Units:

Used on Units:
Possible Values:

Not Viewed, Active or History, Manual, Auto,
or Info., Any diagnostic listed under the previous

Used on Units:
Possible Values:

All Units

All Units

Log Number 1-20, Viewed or

All Units

+ (Plus) and - (Minus)

Active Diagnostics ____________________

"Please Wait . . . Updating Diagnostic Log"

If the "DIAGNOSTIC LOG" is empty when the "CANCEL" key is
pressed, the following screen will be displayed.

Active Diagnostics ---- Info

"Diagnostic Buffer Is Already Empty !"

Press the AUTO or STOP key to return to the top level status screen.

Failure Modes

When any condition results in the unit's unability to perform
a normal function, it is said to have entered a failure mode.
There are two types of failure modes.

1. An "Analog input out of range" failure mode.

This failure mode occurs when a sensing device such as a
temperature sensor begins to transmit information that is
outside its allowable range.

2. A "Fault recognition by input logic" failure mode.
This failure mode occurs when the UCM receives informa­tion that does not "make sense" or does not conform to its
predefined logic.

Used on Units:

Possible Values:

Used on Units:

Possible Values:

All Units

Manual, Auto, or Info

All Units

Manual, Auto, or Info

46

All Units with Local HI

All Units with Local HI

k

System Testing & Troubleshooting

Communications Link Problems

If one of these messages appear on the Human Interface screen,
that Human Interface is not communicating with the unit.

LOCAL HI COMMUNICATIONS LOSS

OR

REMOTE HI COMMUNICATIONS LOSS
CHECK COMM LINK WIRING TO UNIT NUMBER 3

If one of these messages appear on the Human Interface screen,
the link is noisy or there is another Human Interface of the same
type on the link.

Impr oper Human Interface Configuration

OR

Improper Human Interface Configuration
More than one Remote HI on lin

Used With:
Problem:

has lost communications with the CGM. See
"Fail Diagnostic" for additional information.

Check:

Interface and CGM. Verify crimping and polarity
of communications wiring. There should be no
loose connections or crimps on wire insulation.

Used With:
Possible Values:
Problem:

communications with the unit whose number
is specified (#3 in this example).

Check:

or crimps on wire insulation.

Used With:
Problem:

Local HI has been installed on the link.

Check:

Interface and CGM. Verify crimping of
communications wiring. There should be no
loose connections or crimps on wire insulation.
If a Remote HI was installed, verify that a
Local HI was not installed by mistake.

Used With:
Problem:

Remote HI has been installed on the link.

Check:

face and the IPCB and CGM. Verify crimpi ng of
communications wiring. There should be no
loose connections or crimps on wire insulation.
Verify that no other Remote HI’s have been
connected to the same communications link/unit.

The Unit Mounted (Local) Human interface

Wiring between Unit Mounted (Local) Human

All Uni ts with Remote Human Interface

Unit Number 1 through 4

The Remote Human Interface has lost

Field/unit wiring between Remote Human
Interface and the IPCB on the unit number
specified. Also, verify wiring between the IPCB
and CGM of the unit whose number is specified.
Verify crimping and polarity of communications
wiring. There should be no loose connections

Noisy Communications link or a second

Wiring between Unit Mounted (Local) Human

All Uni ts with Remote Human Interface

Noisy Communications link or a second

Field/Unit wiring between Remote Human Inter-

Diagnostics

There are four types of diagnostics:

1. (PMR) Partial System Disable, Manual Reset

2. (PAR) Partial System Disable, Auto Reset

3. (INFO) Information Only

4. (HO) History Only

The following Troubleshooting chart lists possible Failure
Modes and:

1. The Diagnostic Displayed
screen and if it is a PMR, PAR, INFO or HO diagnostic.

2. The condition which caused the failure mode to occur or
the Reason for Diagnostic

3. The UCM’s Reaction

47

on the Human Interface’s LCD

.

to the failure mode.

System Testing & Troubleshooting

i

y

p

(INFO) A manual reset may be

made at the Human Interface, at

Tracer, or by cycling power to the

(INFO) An automatic reset occurs

after the CGM ICS Temperature

Sensor returns to its allowable

range. In order to prevent rapid

cycling of the diagnostic, there is a

10 second delay prior to the

CGM.

(PAR) An automatic reset occ urs

after the OA Temp input returns to

its allowable range. In order to

prevent rapid cy cling of the

Diagnostic, there is a 10 second

delay before the automatic reset.

(PAR) An automatic reset occ urs

after the designated Zone

Temperature signal returns to its

allowable range. In order to prevent

rapid cycling of the Diagnostic,

there is a 10 second delay before

the automatic reset.

An information only diagnostic will

be displayed at the Human

No change in unit operation

occurs. This diagnostic is for

information only.

The unit is reading a signal that is out of

range for the CGM ICS Temperature

sensor input on the CGM. (Temp < -40 F

or Temp > 200 F).

Interface.

An error occurred while the CGM was

writing data to its internal non-volatile

memory (EEPROM).

Unit actions that occur when this

diagnostic is active include;

a. Low Ambient Compressor

Lockout function is disabled

b. Low Ambient Pump Override

function is activated (ie: Solution

Pump ON request is issued).

c. LPC Bypass Time is set to

Minimum Bypass Time (time used

for OA Temp >65 degF).

d. If Leaving Solution Reset type

selected is OA Temp Reset, then

the Reset type reverts to NONE

for the duration of the failure.

The Reset type reverts to NONE

for the duration of the failure.

The unit is reading a signal that is out of

range for the Outside Air Temperature

sensor input on the CGM. (Temp < -40 F

or Temp > 200 F).

laced.

need to be re

The Leaving Solution Reset type

selected is Zone Temp Reset, and the

unit is reading a signal that is out of

range for this input (Temp < -40 F or

Temp > 200 F).

DIAGNOSTIC DISPLAYED REASON FOR DIAGNOSTIC UCM’S REACTION RESET REQUIRED

CGM ICS Temperature Sensor Fail

Problem: CGM is receiv ing a signal

which is out of range from the CGM

ICS Temperature Sensor input.

CGM Module Data Storage Error

Problem: There was a data

transmission error.

Check: This can be caused by an

intermittent power loss . Turn the

unit off for 1-2 minutes, then back on

again. If diagnostic pers ists, then

CGM OA Temp Sensor Failure

the CG M ma

Problem: The Outside Air

Temperature sensor input is out of

range.

Check: Sensor resistance between

830 ohms (200 F) and 345.7Kohms

(-40 F). If so, check field/unit wiring

between Sens or and CGM.

48

CGM Zone Temp Sensor Failure

Problem: The CGM Zone

Temperature sensor input is out of

range.

Check: Sensor resistance between

830 ohms (200 F) and 345.7Kohms

(-40 F). If so, check field/unit wiring

between Sens or and CGM.

y

p

p

p

(INFO) This diagnostic is reset when

y

p

p

p

a compres sor on Circ uit 1 is staged

on due to a cooling demand.

(INFO) This diagnostic is reset when

a compres sor on Circ uit 2 is staged

on due to a cooling demand.

System Testing & Troubleshooting

(PMR) A manual reset is required

after the diagnostic is set. It can be

reset by the HI or Trac er, or by

cycling power to the CGM.

PMR) A manual reset is required

after the diagnostic is set. It can be

reset by the HI or Trac er, or by

cycling power to the CGM.

No Change in unit operation

occurs. This diagnostic is for

information only.

Unit remained in pumpdown for 30

seconds without the occurrence of

an LPC event. Pumpdown sequence

was terminated by a 30 second

timer.

DIAGNOSTIC DISPLAYED REASON FOR DIAGNOSTIC UCM’S REACTION RESET REQUIRED

Circuit 1 Pumpdown Terminated

by Time

Problem: Unit went through

Pumpdown on Circuit 1 and LPC

never tripped. Pumpdown was

terminated after 30 s econds.

Check: Check circuit 1 pumpdown

No Change in unit operation

occurs. This diagnostic is for

information only.

Unit remained in pumpdown for 30

seconds without the occurrence of

an LPC event. Pumpdown sequence

was terminated by a 30 second

timer.

eration.

er o
ro

solenoid valve and low pressure

switch to verif

Crcuit 2 Pumpdown Terminated by

Time

(Circuit #2 40-60 Ton units only)

Problem: Unit went through

Pumpdown on Circuit 2 and LPC

never tripped. Pumpdown was

terminated after 30 s econds.

Check: Check circuit 2 pumpdown

A "Lockout Circuit #1" request is

issued to the Compressor Staging

Control function. The Compressor

Relays, LPC Bypass Relay,

Liquid Line Solenoid Relay, and

Hot Gas Bypass Relay for

Circuit 1 are all de-energized

A "Lockout Circuit #2" request is

issued to the Compressor Staging

Control function. The

Compressor Relays, LPC

Bypass Relay, and Liquid Line

Solenoid Relay for Circuit 2 are

all de-energized

The circuit #1 compressor proving

input on the SCM/MCM is detected

closed continuously for more than 3

seconds while neither compressor

output on Circuit #1 is clos ed.

eration.

er o
ro

solenoid valve and low pressure

switch to verif

Compressor Contactor Fail -

Circuit 1

Problem: The Compressor

Contactor for Circuit #1 has

malfunctioned.

The Circ uit #2 compressor proving

Compressor Contactor Fail -

input on the MCM is detected c losed

Circuit 2

continuous ly for more than 3

(Circuit #2 40-60 Ton units only)

seconds while neither compressor

output on Circuit #2 is clos ed.

Problem: The Compressor

Contactor for Circuit #2 has

malfunctioned.

49

System Testing & Troubleshooting

g

(PMR) A manual reset is required

after this diagnostic occurs. The

Diagnostic can be reset by the unit

mounted Human Interface Module or

Tracer, or by cycling power to the

(PMR) A manual reset is required

anytime after the Diagnostic is set.

The Diagnostic c an be reset by the

Human Interface or Tracer, or by

cycling power to the CGM.

(PMR) A manual reset is required

anytime after the Diagnostic is set.

The Diagnostic c an be reset by the

Human Interface or Tracer, or by

cycling power to the CGM.

CGM.

(PMR) A manual reset is required

after this diagnostic occurs. The

Diagnostic can be reset by the unit

mounted Human Interface Module or

Tracer, or by cycling power to the

CGM.

(PAR) An automatic reset occurs

after the #1 Condenser Temperature

input returns to its allowable range

within 10 seconds .

A “Lockout Circuit #1” request is

While the Circuit 1 LPC Bypass

issued to the Compressor Staging

Control function. The Compressor

Relay was energized, the 7 PSIG

LPC switch: a) was open at the time

ized.

A “Lockout Circuit #2” request is

issued to the Compressor Staging

Control function. The

Compressor Relays, LPC

Bypass Relay, Liquid Line

Solenoid Relay for Circuit 2 are all

Relays, LPC Bypass Relay,

Liquid Line Solenoid Relay, and

Hot Gas Bypass Relay for

Circuit 1 are all de-energized.

A “Lockout Circuit #2” request is

issued to the Compressor Staging

Control function. The

Compressor Relays, LPC

Bypass Relay, and Liquid Line

Solenoid Relay for Circuit 2 are all

de-energized.

A “Lockout Circuit #1” request is

issued to the Compressor Staging

Control function. The

Compressor Relays, LPC

Bypass Relay, Liquid Line

Solenoid Relay, and Hot Gas

Bypass Relay for Circuit 1 are all

de-ener

The Circ uit #2 Compressor proving

input is detected open continuously

for more than 3 seconds when either

a compres sor was requested to

start, or b) the switch opened 4 times

after a compress or on Circuit 1 was

started but prior to ac cumulating 3

continuous minutes of run time.

While the Circuit 2 LPC Bypass

Relay was energized, the 7 PSIG

LPC switch: a) was open at the time

a compres sor was requested to

start, or b) the switch opened 4 times

after a compress or on Circuit 2 was

started but prior to ac cumulating 3

continuous minutes of run time.

The Circ uit #1 Compressor proving

input is detected open continuously

for more than 3 seconds when either

or both compress or outputs on

Circuit #1 are energiz ed (as

described in the Compressor

Protection function).

or both compress or outputs on

de-energized

A “Lockout Circuit # 1” request is

issued to the Compressor Staging

Control function. The

Compressor Relays, LPC

Bypass Relay, Liquid Line

Solenoid Relay, and Hot Gas

Bypass Relay for Circuit 1 are all

de-energized.

Circuit #2 are energiz ed (as

described in the Compressor

Protection function).

The unit is reading a signal that is out

of range for the circ uit #1 Saturated

Condenser Temperature sensor.

(Temp < -40 F or Temp > 200 F).

DIAGNOSTIC DISPLAYED REASON FOR DIAGNOSTIC UCM’S REACTION RESET REQUIRED

Compressor Protection - LPC Open -

Circuit 1

Problem: State of refrigerant charge

for circuit #1 is low.

Compressor Protection - LPC Open -

Circuit 2 (Circuit #2 40-60 Ton units

only)

Problem: State of refrigerant charge

Compressor Trip - Circuit 2

(Ckt #2 40-60 Ton units only)

Problem: The Compress or Circuit #2

for circuit #2 is low.

Compressor Trip - Circuit 1

Problem: The Compress or Circuit #1

has tripped.

50

has tripped.

Cond Temp Sensor Failure - Circuit 1

Problem: The Saturated Condenser

Temperature Input is out of range for

Circuit #1.

Check: Sensor resistance between

830 ohms (200 F) and 345.7Kohms

(-40 F). If so, check field/unit wiring

between Sens or and MCM/SCM.

System Testing & Troubleshooting

(PAR) An automatic reset occurs after

the #2 Condenser Temp input returns

to its allowable range within 10

seconds.

(PAR) An automatic reset occurs after

communication has been restored.

(PMR) A manual reset is required after

the Emergency Stop input recloses.

The Diagnostic can be reset by the

Human Interface or Tracer or by

cycling power to the CGM.

(INFO) An automatic reset occurs after

the EST and LST have both risen to

greater than 3oF above the heat tape

temperature setpoint.

A “Lockout Circuit #2” request is

The unit is reading a signal that is out

issued to the Compressor Staging

of range for the circuit #2 Saturated

Control function. The Compressor

Relays, LPC Bypass Relay, and

Liquid Line Solenoid Relay for

Circuit 2 are all de-energized.

Condenser Temperature sensor.

(Temp < -40 F or Temp > 200 F).

No Change in unit operation

The CGM has lost communications

occurs. The Current Sensing

Module is used for monitoring

purposes only, and does not affect

unit operation. This diagnostic is

for information only.

with the CSM.

“OFF or “Close” requests are

issued as appropriate to the

An open circuit has occurred on the

Emergency Stop input caused either

following functions;

by a High Duct Temp T-stat trip, or the

a. Compressor Staging control. (All

Compressor Relays, Liquid Line

Solenoid Relays, LPC Bypass

Relay, and HGBP Relay are

deenergized).

b. Evaporator Solution Pump

Control. (S

No change in the unit operation.

This diagnostic is for information

only.

opening of field-provided contacts,

switch, etc...

An abnormal temperature reading of

the chilled solution exists.

DIAGNOSTIC DISPLAYED REASON FOR DIAGNOSTIC UCM’S REACTION RESET REQUIRED

Cond Temp Sensor Failure - Circuit 2

(Circuit #2 40-60 Ton units only)

Problem: The Saturated Condenser

Temperature Input is out of range for

Circuit #2.

Check: Sensor resistance between

830 ohms (200 F) and 345.7Kohms

(-40 F). If so,

Current Sensing Module Comm Fail

Problem: The CGM has lost

communications with the Current

Sensing Module (CSM)..

Check: Check field/unit wiring between

CGM and CSM.

Emergency Stop

Problem: The Emergency Stop input

on the CGM is open.

51

EST/LST Low Temperature Indication

Problem: Either the entering solution

temperature or the leaving solution

temperature has fallen below the heat

tape temperature setpoint.

(PMR) A manual reset is

System Testing & Troubleshooting

(PMR) A manual reset is

required after this diagnostic

occurs. The Diagnostic can

be reset by the unit mounted

Human Interface Module or

Tracer, or by cycling power

required after this diagnostic

occurs. The Diagnostic can

be reset by the unit mounted

Human Interface Module or

Tracer, or by cycling power

to the CGM.

to the CGM.

When this diagnostic is active:

a. A "Lockout Ckts" request is sent

to the compressor staging function.

All Compressor Relays, LPC

Bypass relays, and Liquid Line

Solenoids will be de-energized.

Min On times, H GBP, and

Pumpdown will be bypassed.

b. The following functions will be

disabled:

1) Compressor Staging,

2) Process/Comfort Cooling,

3) Ice Building.

c. Evaporator Solution Pump

Control is not affected.

d. The Heat Tape relay output will

When this diagnostic is active:

a. A "Lockout Ckts" request is sent

to the compressor staging function.

All Compressor Relays, LPC

Bypass relays, and Liquid Line

Solenoids will be de-energized.

Min On times, H GBP, and

Pumpdown will be bypassed.

b. If Leaving Solution Reset type

selected is Entering Soluti on Reset,

then th e Reset type reverts to

NONE for the duration of the failure.

c. Evaporator Solution Pump

Control is not affected.

d. The Heat Tape relay output will

energize.

The unit is reading a signal that is out

of range for this input on the CGM

The unit is reading a signal that is out

of range for this input on the CGM.

(Temp < -40 F or Temp > 200 F).

(Temp < -40 F or Temp > 200 F).

energize.

DIAGNOSTIC DISPLAYED REASON FOR DIAGNOSTIC UCM’S REACTION RESET REQUIRED

Evaporator Entering Solution

Temperature Sensor Fail

Problem: The Evaporator Entering

Solution Temperature Sensor input is

out of range.

Check: Sensor resistance between

830 ohms (200 F) and 345.7Kohms

(-40 F). If so, check field/unit wiring

between Sensor and CGM.

Evaporator Leaving Solution

Temperature Sensor Fail

Problem: The Evaporator Leaving

Solution Temperature sensor input is

out of range.

Check: Sensor resistance between

830 ohms (200 F) and 345.7Kohms

(-40 F). If so, check field/unit wiring

between Sensor and CGM.

52

System Testing & Troubleshooting

For Service Parts Replacement,

please note:

(a) For proper operation of units with

Brazed Plate heat exchangers,

please insure the following board is

installed:

Multiple Compressor Module (MCM)

- Software Version number greater

(PMR) A manual reset is required

after this diagnostic occurs. The

Diagnostic can be reset by the unit

mounted Human Interface Module

or Tracer, or by cycling power to the

CGM.

than or equal to 10.00orSingle Compressor Module

(SCM) - Software Version number

greater than or equal to 10.00

(b) To eliminate this diagnostic

when it is due to an incompatible

Software Version number(s), please

install the appropriate board(s) per

the fol lowing:

Cold Generator Module (CGM) -

Software Version number greater

than or equal to 3.00

CG Unit Human Interface (HI) -

Software Version number greater

than or equal to 27.00

A "Lockout all Circuit" request

is issued to the comp ressor

staging function. Compressor

Relays, LPC Bypass Relays,

Liquid Line Solenoid Relays

and HGBP relay are all de-

energized.

Units with a Brazed Plate heat

exchanger require a flow proving switch

for freeze protection functionality. This

flow proving switch input was detected

close d (shorted) at the time th e sol ution

pump was commanded ON (Only on

units with "Chiller Solution Pump Mode"

set to AU TO).

Also, units with Brazed Plate heat

exchanger require newer versions of

control boards for proper operation.

During power-up, the unit detected at

least one replacement module with a

Software Verison number less than what

is required.

DIAGNOSTIC DISPLAYED REASON FOR DIAGNOSTIC UCM’S REACTION RESET REQUIRED

Evaporator Solution Flow Loss

The switch connected to the flow

proving switch input on a unit with a

Brazed Plate heat exchanger has

faile d CLOSED;

or

during power-up, a unit with a

Brazed Plate heat exchanger has

detected that older versions of

control modules are installed.

53

System Testing & Troubleshooting

(PAR) An automatic reset

occurs after the Evap

Solution Flow Proving

Switch has detected

Solution flow for 6

continuous seconds.

(PAR) An automatic reset occurs

after the External Leaving Solution

Setpoint returns to its allowable

range. In order to prevent rapid

cycling of the Diagnostic, there is a

10 second delay before the

automatic reset.

When the Solution Flow Switch

input is detected OPEN

(no flow) for 6 continuous

seconds, the Unit will de-

energize

the following relays:

Compressor Relays, LPC

Bypass Relays, Liquid Line

Solenoids, and HGBP Relay.

While the diagnostic is active,

the Leaving Solution Setpoint

will revert to using the default

(HI) Leaving Solution Setpoint.

The diagnostic can occur at any time

after the Evaporator Solution Pump

Relay has been requested ON, and the

Solution Flow Switch input is detected

OPEN (no flow) for 5 continuous

minutes.

The External Leaving Solution Setpoint

(LSS) is designated as the Leaving

Solution Setpoint source and it is out of

range. Out of range is defined as one of

the following:

a) External LSS > 65 deg F or < 51 deg

F for unit with LSS Range 51-65 deg F.

b) External LSS > 50 deg F or < 40 deg

F for unit with LSS Range 40-50 deg F.

c) External LSS > 39 deg F or < 30 deg

F for unit with LSS Range 30-39 deg F.

d) External LSS > 29 deg F or < 20 deg

F for unit with LSS Range 20-29 deg F.

e) External LSS > 75 deg F or < 10 deg

F for unit with LSS Range SPECIAL.

DIAGNOSTIC DISPLAYED REASON FOR DIAGNOSTIC UCM’S REACTION RESET REQUIRED

Evap Solution Flow Proving Switch

Problem: Solution Flow Switch is

open after the Solution Pump is ON.

Check: Verify Solution Pump

operation and that the Evaporator

Solution Flow Switch is working

properly.

External Leaving Solution STP Input

Fail

Problem: CGM is receiving an

External Leaving Solution Setpoint

(LSS) Input signal which is out of

range. Check field/unit wiring

between CGM and External

Leaving Solution Setpoint

potentiometer.

54

g

(PAR) An automatic reset occurs

g

after communication has been

restored.

System Testing & Troubleshooting

(PAR) An automatic reset occurs

after communication has been

restored.

The UCM will initiate the following

The CGM has lost communications

actions ;

with the GBAS Module.

ized.

a. If the Demand Limit input was

closed prior to communications

loss, then the Demand Limit

commands issued to the

Compressor Staging function

will be cancelled.

b. If any of the GBAS setpoint

control parameters are the

HI-selected setpoint sources,

then those setpoints will revert

to the default HI setpoints .

c. Any active GBAS output

control parameters will be

ignored.

d. A failsafe function in the GBAS

module will cause all GBAS

outputs to be zeroed and

de-ener

The UCM will initiate the following

actions ;

a. If the Demand Limit input was

closed prior to communications

loss, then the Demand Limit

commands issued to the

Compressor Staging function

will be cancelled.

b. If any of the GBAS setpoint

control parameters are the

HI-selected setpoint sources,

then those setpoints will revert

to the default HI setpoints .

c. Any active GBAS output

control parameters will be

ignored.

d. A failsafe function in the GBAS

The CGM has lost communications

with the GBAS Module.

module will cause all GBAS

ized.

outputs to be zeroed and

de-ener

DIAGNOSTIC DISPLAYED REASON FOR DIAGNOSTIC UCM’S REACTION RESET REQUIRED

GBAS 0-5VDC Module Comm

Failure

Problem: The CGM has lost

communications with the GBAS

Module.

Check: Check field/unit wiring

between CGM and GBAS.

GBAS 0-5VDC Module Comm

Failure

Problem: The CGM has lost

communications with the GBAS

Module.

Check: Check field/unit wiring

between CGM and GBAS.

55

System Testing & Troubleshooting

expired.

expired.

(PAR ) An automatic reset occurs after

the Leaving Solution Temperature

decreas es 5 deg F or more below the

Hot Start Load Limit Setpoint.

(INFO ) An automatic reset occurs after

the Leaving Solution Temperature

decreas es 5 deg F or more below the

Hot Start Load Limit Setpoint.

(PMR) A manual reset is required after

this diagnostic oc curs. The Diagnostic

can be reset by the unit mounted

Human Interface Module or Tracer, or

by cycling power to the CGM.

(PAR ) An automatic reset occurs after

the designated Hot Start Load Limit

Setpoint source sends a signal that is

within range for 10 continuous seconds,

or after a different setpoint source is

user-defined.

While this diagnostic is active, the

second compressor on each

refrigerant circuit is shut off

and/or prevented from s taging

ON.

No change in unit operation

occurs. This diagnostic is for

information only.

Hot Operation Response is set to "50%

CAPACITY PER CKT, AUTO RESET

DIAG ". The Leaving Solution Temp

exceeded the Hot Start Load Limit

Setpoint after the Hot Start Time Interval

Hot Operation Response is set to

"ALLO W N ORMAL OPERATIO N, INFO

RESET DIAG". The Leaving Solution

Temp exceeded the Hot Start Load Limit

A "lockout all Ckts" request is

issued to the compressor staging

function. The Unit will deenergize

the following relays: Compressor

Relays, LPC Bypass Relays,

Liquid Line Solenoids, and HGBP

Relay . Comfort/Process C ooling,

and Ice Building are terminated

and prevented from oc curring

until the diagnostic condition is

cleared.

The default (HI) Hot Start Load

Limit Setpoint will become the

active setpoint while this

diagnostic is active.

Setpoint after the Hot Start Time Interval

Hot Operation Response is set to

"SHUT OFF COMPRESSORS,

MANUAL RESET DIAG ". The Leaving

Solution Temp exc eeded the Hot Start

Load Limit Setpoint after the Hot Start

Time Interval expired.

The unit is reading a signal that is out of

range for the Hot Start Load Limit

Setpoint.

DIAGNOSTIC DISPLAYED REASON FOR DIAGNOSTIC UCM’S REACTION RESET REQUIRED

Hot Start Load Limit (Auto)

Problem: The Leaving Solution

Temperature is too hot.

Hot Start Load Limit (Info)

Problem: The Leaving Solution

Temperature is too hot.

Hot Start Load Limit (Man)

Problem: The Leaving Solution

Temperature is too hot.

Hot Start Load Limit Setpoint Fail

Problem: The Hot Start Load Limit

Setpoint is out of range.

Check: If Hot Start Load Limit

Setpoint Source is ass igned to

either GBAS module, but this

setpoint has not been assigned to

one of that GBAS module’s

analog inputs, this diagnostic c an

occur.

56

System Testing & Troubleshooting

g

(INFO) An automatic reset occurs after

the Circ uit 1 Saturated Liquid Pressure

Sensor input returns to its allowable

range. In order to prevent rapid cy cling

of the Diagnostic, there is a 10 second

(PAR) An automatic reset occurs after

the designated Leaving Solution

Setpoint returns to its allowable range.

In order to prevent rapid c ycling of the

Diagnostic, there is a 10 s econd delay

(PAR) An automatic reset occurs after

the designated Ice Build Terminate

Setpoint source sends a signal that is

within range for 10 continuous seconds,

or after a different setpoint source is

(PAR) An automatic reset occurs after

the difference between the active Ice

Build Terminate Setpoint and the

Leaving Solution Cutout Temp Setpoint

meets the minimum difference

requirement.

user-defined.

before the automatic reset.

delay before the automatic reset.

The Superheat/Subcool

calculation is invalid and the

vaiues are set to zero. No

other change in unit operation

occurs. This diagnos tic is for

(Pres sure < 0 PSIG or Pressure > 400

information only.

PSIG).

While the diagnostic is active,

the Leaving Solution Setpoint

will revert to using the default

The default (HI) Ice Build

Terminate Setpoint will become

the active setpoint while this

The active Ice Build Terminate

Setpoint is set to the Leaving

Solution Cutout Temp Setpoint

plus the larger of 1) calculated

Minimum Differential v alue, or

2) 6.5 deg F.

The active Ice Build Terminate Setpoint

and the Leaving Solution Cutout Temp

Setpoint are too close together for proper

unit operation.

The unit is reading a signal that is out of

diagnostic is active.

range for the Ice Build Terminate

Setpoint.

The designated Leaving Solution Setpoint

(HI) Leaving Solution Setpoint.

e SPECIAL.

The unit is reading a signal that is out of

range for the Circuit 1 Saturated Liquid

source is out of range. Out of range is

defined as one of the following:

a) LSS > 65 deg F or < 51 deg F for unit

with LSS Range 51-65 deg F.

b) LSS > 50 deg F or < 40 deg F for unit

with LSS Range 40-50 deg F.

c) LSS > 39 deg F or < 30 deg F for unit

with LSS Range 30-39 deg F.

d) LSS > 29 deg F or < 20 deg F for unit

with LSS Range 20-29 deg F.

e) LSS > 75 deg F or < 10 deg F for unit

with LSS Ran

Line Pressure Sensor input on the SSM.

DIAGNOSTIC DISPLAYED REASON FOR DIAGNOSTIC UCM’S REACTION RESET REQUIRED

IBTS Adjusted to Maintain Min Diff

Problem: The active Ice Build

Terminate Setpoint (IBTS) is

closer to the Leaving Solution

Ice Build Terminate Setpoint Fail

Problem: The Ic e Build Terminate

Cutout Temp Setpoint than the

calculated Minimum Differential.

Setpoint is out of range.

Liquid Pressure Sensor Fail

Circuit 1

Problem: Circuit 1 Saturated Liquid

Line Pressure sensor input is out

of range.

Check: Check field/unit wiring

Leaving Solution Setpoint Fail

Problem: The designated Leaving

Solution Setpoint is out of range.

If either GBAS module is

designated as the Leaving Solution

Setpoint source, verify that GBAS

module has this input assigned to

Check: If Ice Build Terminate

Setpoint Source is ass igned to

either GBAS module, but this

setpoint has not been assigned to

one of that GBAS module’s analog

inputs, this diagnostic can occur.

57

one of it’s analog inputs.

between Sens or and SSM.

g

(INFO) An automatic reset occurs

g

g

g

after the Circuit 2 Saturated Liquid

System Testing & Troubleshooting

Pressure Sensor input returns to its

allowable range. In order to prevent

rapid cycling of the Diagnostic, there

is a 10 second delay before the

automatic reset.

(PAR) An automatic reset occurs

after the Outsid e Air Tem p

increases 5 deg F or more above

the Low Ambient Evaporator Pump

Override Temp Setpoint.

(PAR) An automatic reset occurs

after the Evaporator Solution

Temperature(s) rises 4 deg F or

more above the Low Solution Cutout

Temperature Setpoint.

(PMR) A manual reset is required

after this diagnostic occurs. The

Diagnostic can be reset by the unit

mounted Human Interface Module

or Tracer, or by cycling power to the

CGM.

(PMR) A manual reset is required

anytime after the Diagnostic is s et.

The Diagnostic can be reset by the

Human Interface or Tracer, or by

cycling power to the CGM.

nos tic is fo r inform ation

The Superheat/Subcool

calculation is invalid and the

vaiues are set to zero. No other

The unit is reading a signal that is out

of range for the Circuit 2 Saturated

Liquid Line Pressure Sensor input on

only.

change in unit operation occurs.

This di a

the SSM. (Pressure < 0 PSIG or

Pressure > 400 PSIG).

The Evaporator Solution Pump

The Outside Air (Am bient)

Relay is energized while this

condition exists.

temperature is below the Low

Ambient Evap Pump Override Temp

A "Lockout all Circuits" request is

issued to the Compressor

Staging Function. Compressors

are prevented from staging on

and the Unit will de-energize the

following relays: Compressor

Relays, LPC Bypas s Relays,

Liquid Line Solenoids, and

HGBP Relay.

A “Lockout Circuit # 1” request is

issued to the Compressor

Staging Control function. The

Compressor Relays, LPC

Bypass Relay, Liquid Line

Solenoid Relay, and Hot Gas

Bypass Relay for Circuit 1 are all

the time the LPC Bypas s Relay de-

energized. On a standard unit this is

de-energized.

the 45 PSIG LPC switch, but can be

20 PSIG or lower on units w ith a lower

Leaving Solution Setpoint range.

While this diagnostic is active,

Compressors are prevented

from staging on. The Unit will

deenergize the following:

Compressor Relays, LPC

Bypass Relays, Liquid Line

Solenoids, and HGBP Relay.

, the

Setpoint.

While no compressors were running,

the Evaporator Solution

Temperature(s) went below the Low

Solution Cutout Te m p Setp oi nt.

Evaporator Solution Temperature(s)

went below the Low Solution Cutout

While compressors were runnin

Temperature Setpoint.

With one or more compressors

running, the higher pressure of the

two LPC switches on Circuit 1 has

opened 6 times with the LPC Bypass

relay de-energized, or it was open at

DIAGNOSTIC DISPLAYED REASON FOR DIAGNOSTIC UCM’S REACTION RESET REQUIRED

Liquid Pressure Sensor Fail Circuit 2

(Circuit #2 40-60 Ton units only)

Problem: Circuit 2 Saturated Liquid

Line Pressure sensor input is out of

range.

Check: Check field/unit wiring

Low Ambient Evaporator Solution

Pump Override

between Sensor and SSM.

Solution Temperature is too

Problem: Outside Air Temp too low,

reques t So lution Pump to run to

keep Solution moving.

Low Solution Cutout Temperature

(Auto)

Problem: The Evaporator Leaving or

Enterin

low.

Low Solution Cutout Temperature

(Man)

Solution Temperature is too

Low Pressure Control Open -

Circuit 1

Problem: The refrigerant in Circuit 1

is cold and may cause the Solution

in the Chiller barrel to become too

cold. Also, there may be a state of

Problem: The Evaporator Leaving or

Enterin

low.

charge issue with Circuit 1.

58

(PMR) A manual reset is required

g

g

System Testing & Troubleshooting

nostic is set.

The Diagnostic can be reset by

the Human Interface or Tracer, or

anytime after the Dia

by cycling power to the CGM.

(PAR) An automatic reset occurs

after the difference between the

active Leaving Solution Setpoint

and the Leaving Solution Cutout

Temperature Setpoint meets the

minimum difference requirement.

(PAR) An automatic reset occurs

after communication has been

restored.

(INFO) An automatic reset occurs

after the Circuit 1 Saturated Liquid

Temperature Sensor input returns

to its allowable range. In order to

prevent rapid cycling of the

Diagnostic, there is a 10 second

delay before the automatic reset.

The active Leaving Solution

Setpoint is set to the Leaving

Solution Cutout Temperature

Setpoint plus the calculated

A “Lockout Circuit # 2” request is

iss ued to the Compress or Staging

Control function. The Compressor

Relays, LPC Bypass Relay, Liquid

Line Solenoid Relay, and Hot Gas

Bypass Relay for Circuit 2 are all

de-energized.

The active Leaving Solution Setpoint

With one or more compressors

running, the higher pressure of the

two LPC switches on Circuit 2 has

opened 6 times with the LPC Bypas s

relay de-energized, or it was open at

the time the LPC Bypass Relay de-

energized. On a standard unit this is

the 45 PSIG LPC s witch, but c an be

20 PSIG or lower on units with a lower

and the Leaving Solution Cutout

Leaving Solution Setpoint range.

Minimum Differential value.

Temperature Setpoint are too close

together for proper unit operation.

Solution

A “Lockout” request is sent to the

Compressor Staging Control

function. The Liquid Line Solenoid

Relays and LPC Byp-energized.

The CGM has lost communications

with the MCM.

The Superheat/Subcool calculation

The Superheat/Subcool Module is

is inv alid and the values are set to

zero. No other c hange in unit

installed and the unit is reading a

signal that is out of range for the

operation occurs. This diagnostic

Circuit 1 Saturated Liquid Line

is for information only.

Temperature Sensor input on the

SCM/MCM. (Temp < -55 F or Temp >

209 F).

DIAGNOSTIC DISPLAYED REASON FOR DIAGNOSTIC UCM’S REACTION RESET REQUIRED

Low Pressure Control Open -

Circ uit 2 (Circuit #2 40-60 Ton units

only)

Problem: The refrigerant in Circuit 2

is cold and may cause the Solution in

the Chiller barrel to bec ome too cold.

Also, there may be a state of charge

iss ue with Circuit 2.

LSS Adjusted to Maintain Minimum

Differential

Problem: The ac tive Leavin

Setpoint (LSS) is closer to the

Leaving Solution Cutout Temp

Setpoint than the calculated

Minimum Differential.

MCM Communications Failure

(40-60 Ton units only)

Problem: The CGM has lost

communications with the MCM.

Check: Check field/unit wiring

between CGM and MCM.

Sat Liquid Temperature Sensor Fail

Circuit 1

Problem: Circuit 1 Saturated Liquid

Line Temperature sensor input is out

of range.

Check: Sensor resistance between

830 ohms (200 F) and 345.7Kohms

(-40 F). If not, check field/unit wiring

between Sens or and SCM/MCM.

59

System Testing & Troubleshooting

g

(PAR) An automatic reset occurs

after communication has been

(INFO) An automatic reset occurs

after the Circuit 2 Saturated Liquid

Temperature Sensor input returns to

its allowable range. In order to

prevent rapid cycling of the

Diagnostic, there is a 10 sec ond

delay before the automatic res et.

restored.

(INFO) An automatic reset occurs

after the Circuit 1 Suction Line Temp

Sensor input returns to its allowable

range. In order to prevent rapid

cycling of the Diagnostic, there is a

10 second delay before the

automatic reset.

(INFO) An automatic reset occurs

after the Circuit 2 Suction Line

Temperature Sensor input returns to

its allowable range. In order to

prevent rapid cycling of the

Diagnostic, there is a 10 sec ond

delay before the automatic res et.

ized.

The Superheat/Subcool

calc ulation is invalid and the

values are set to zero. No other

change in unit operation occurs.

This diagnostic is for information

The Superheat/Subcool

calc ulation is invalid and the

values are set to zero. No other

change in unit operation occurs.

This diagnostic is for information

only.

The Superheat/Subcool Module is

installed and the unit is reading a

signal that is out of range for the

Circuit 2 Saturated Liquid Line

Temperature Sensor input on the

MCM. (Temp < -40 F or Temp > 200

F).

A “Lockout” request is s ent to the

Compressor Staging Control

function. The Liquid Line

The CGM has los t communications

with the SCM.

Solenoid Relays and LPC

Bypass Relays are de-

energized. A failsafe function in

the SCM will cause all SCM

outputs to be z eroed and de-

ener

The Superheat/Subcool Module is

installed and the unit is reading a

signal that is out of range for the

only.

Circuit 1 Suction Line Temp Sensor

input on the SCM/MCM. (Temp < -

40 F or Temp > 200 F).

The Superheat/Subcool

calc ulation is invalid and the

values are set to zero. No other

change in unit operation occurs.

This diagnostic is for information

only.

The Superheat/Subcool Module is

installed and the unit is reading a

signal that is out of range for the

Circuit 2 Suction Line Temperature

Sensor input on the MCM. (Temp < -

40 F or Temp > 200 F).

DIAGNOSTIC DISPLAYED REASON FOR DIAGNOSTIC UCM’S REACTION RESET REQUIRED

Saturated Liquid Temperature

Sensor Fail - Circuit 2

(Circuit #2 40-60 Ton units only)

Problem: Circ uit 2 Saturated Liquid

Line Temperature sensor input is out

of range.

Check: Sens or resistance between

830 ohms (200 F) and 345.7Kohms

(-40 F). If not, check field/unit wiring

between Sensor and MCM.

Suction Temp Sensor Fail - Circuit 1

Problem: Circ uit 1 Suction Line Temp

sensor input is out of range.

Check: Sens or resistance between

830 ohms (200 F) and 345.7Kohms

(-40 F). If not, check field/unit wiring

between Sensor and SCM/MCM.

Suction Temp Sensor Fail - Circuit 2

(Ckt #2 40-60 Ton units only)

Problem: Circ uit 2 Suction Line Temp

sensor input is out of range.

Check: Sens or resistance between

830 ohms (200 F) and 345.7Kohms

(-40 F). If not, check field/unit wiring

SCM Communications Failure

(20-30 Ton units only)

Problem: The CGM has lost

communications with the SCM.

Check: Check field/unit wiring

between CGM and SCM.

between Sensor and MCM.

60

(INFO) An automatic reset occurs

after the Circuit 1 Suction Line

System Testing & Troubleshooting

Temperature Sensor input returns to

its allowable range. In order to

prevent rapid cycling of the

Diagnostic, there is a 10 s econd

delay before the automatic reset.

(INFO) An automatic reset occurs

after the Circuit 2 Suction Line

Temperature Sensor input returns to

its allowable range. In order to

prevent rapid cycling of the

Diagnostic, there is a 10 s econd

delay before the automatic reset.

(PAR) An automatic reset occurs

after communication has been

restored.

The Superheat/Subcool

calculation is invalid and the

values are set to zero. No other

change in unit operation occurs.

This diagnostic is for information

only.

The Superheat/Subcool Module is

installed and the unit is reading a

signal that is out of range for the

Circuit 1 Suction Line Temperature

Sensor input on the SCM/MCM.

(Temp < -40 F or Temp > 200 F).

DIAGNOSTIC DISPLAYED REASON FOR DIAGNOSTIC UCM’S REACTION RESET REQUIRED

Suction Temperature Sens or Fail -

Circuit 1

Problem: Circuit 1 Suction Line

Temperature sensor input is out of

range.

Check: Sensor resistance between

830 ohms (200 F) and 345.7Kohms

(-40 F). If not, check field/unit wiring

The Superheat/Subcool

calculation is invalid and the

values are set to zero. No other

change in unit operation occurs.

This diagnostic is for information

only.

The Superheat/Subcool Module is

installed and the unit is reading a

signal that is out of range for the

Circuit 2 Suction Line Temperature

Sensor input on the MCM. (Temp < -

40 F or Temp > 200 F).

between Sens or and SCM/MCM.

Suction Temperature Sens or Fail -

Circuit 2

(Ckt #2 40-60 Ton units only)

Problem: Circuit 2 Suction Line

Temperature sensor input is out of

range.

Check: Sensor resistance between

830 ohms (200 F) and 345.7Kohms

(-40 F). If not, check field/unit wiring

No Change in unit operation

occurs. The Superheat/Subcool

Module is used for monitoring

purposes only, and does not

affect unit operation. This

diagnostic is for information

only.

The CGM has lost communications

with the SSM.

between Sens or and MCM.

Superheat/Subcool Module Comm

Fail

Problem: The CGM has lost

communications with the

Superheat/Subcool Module (SSM).

Check: Check field/unit wiring

between CGM and SSM Module.

61

System Testing & Troubleshooting

g

)

y

y

occurs after communic ation

with the TCI or LCI Module. setpoints provided by the network

the network has been designated

after comunications with the

communications with the

other

ed as an

setpoints provided by the

or ignored. Where the network

a. disallow any interaction after communication has been

communications with the

ineffective, and and H I interaction with the

mounted HI d isplay: LOCAL HI

COMMUNICATIONS

LOSS CHECK COMM LINK

WIRING BETWEEN

option, then on the remote

MODULES

(If the unit has a remote HI

HI module, this diagnostic

displa

will be reported and

automatic reset diagnostic).

DIAGNOSTIC DISPLAYED REASON FOR DIAGNOSTIC UCM’ S REACTION RESET REQUIRED

BAS Modul e Communications Failure CGM has lost communications All active commands and (PAR) An automatic reset

Problem: The RTM has lost through the TCI or LCI will be has been restored.

communications with the TCI or LCI. cancelled and/ or ignored. Where

Check: Check field/ unit wiring as setpoint source, local HI default

between RTM and TCI or LCI Module. setpoints will be used.

BAS/NETWORK Comm Fai lure The TCI or LC I has l ost Al l acti ve commands and (PAR) An automatic reset occurs

Probl em: The TCI o r LCI has lost network for > 15 minu tes. netwo rk throug h the TCI or network and TCI or LCI

communications with Tracer. LCI will be cancelled and/ has been restored.

control panel

Check: Network (Tracer or 3rd party has been designated as setpoint

building control panel) is powered up source, local HI default

and running properly. If so, check unit setpoints will be used.

wiring between TCI or LCI and network

(Tracer or 3rd party buildin

Unit HI Communications Failure The CGM has lost A failsafe function in the HI will; (INFO) An automatic reset occurs

62

communications with the U nit Interface. CGM (o r any other and the HI. When the fail ure

mounted (local) Human Interface modules), screen is cleared, the

(HI). b. render all HI keystrokes General display is restored

Check: Field/unit wiring between c. cause the following to be CGM is again permitted.

Problem: The CGM has lost unit-mounted Human between the HI and the

CGM and Local HI. displayed on the unit-

be assigned:

capacity

• Evap Leaving Solution Temp • Ice Building • Hot Gas Bypass Relay

• ICS Defined Temp • Flow Proving • Alarm Relay

• Condenser Entering Solution Temp • Condenser Pump • Low Ambient Bypass 1 Relay

• Outdoor Air Temp Proving • Low Ambient Bypass 2 Relay

• Condenser Leaving Solution Temp • Solution Pump Relay

• Zone Temperature • Ice Making Relay

• ICS Temperature • ICS Relay

Module I/O Summary

UNIT MODULE ANALOG INPUTS ANALOG OUTPUTS BINARY INPUTS BINARY OUTPUTS

Cold Generator • External Leaving Solution Setpoint • None • Emergency Stop • Liquid Line Relay (Ckt #1)

Module (CGM) • Evap Entering Solution Temp • External Auto/Stop • Liquid Line Relay (Ckt #2)

Current Sensing • Compressor A, Phase A • None • None • None

Module (CSM) • Compressor A, Phase B

• Compressor B, Phase A

• Compressor B, Phase C

• Compressor C, Phase B

• Compressor C, Phase C

• Compressor D, Phase A

• Compressor D, Phase C

Generic Building Four inputs, which can be assigned: • None • Demand Limit Five outputs, which can

Automation System 0- • Occ Zone Cool Setpoint

63

5VDC (GBAS 0-5V) • Unocc Zone Cool Setpoint • Compressors running

Module • Occ Zone Heat Setpoint • Running at maximum

• Unocc Zone Heat Setpoint

• Supply Air Cooling Setpoint • Selected diagnostics

• Supply Air Heating Setpoint messages

• Space Static Pressure Setpoint

• SA Static Pressure Setpoint

• Min OA CFM Setpoint

• Leaving Solution Setpoint

• Ice Build Terminate Setpoint

• Hot Start Load Limit Setpoint

• Maximum Capacity Level Setpoint

be assigned:

g

g

ned:

y

capacit

ned: can be assi

• Evap Te mp Ckt2

• ICS Defin ed Temp

• Liqu id Pressure Ckt1

• Suction Pressure Ckt1

• Liqu id Pressure Ckt2

• Suction Pressure Ckt2

• Active Cooling Capacity

• Outdoor Air Temp

• Saturated Liquid Temp Ckt1

be assi

• Saturated Liquid Temp Ckt2

(Low Ambient Ckt #1) • Compressor Proving (Ckt #2) • Compressor Relay K12

(Low Ambient Ckt #2) • Low Pressure Cutout (Ckt #2) • Compressor Relay K4

• Heater Tape

• Condenser Fan B

• High Pressure Control • Condenser Fan A

• Hot Start Load Limit Setpoint • Sat. Cond Temp Ckt1

• Maximum Capacity Level • Sat. Cond Temp Ckt2 • Selected diagnostics

Setpoint • Evap Temp Ckt1 messages

Module I/O Summary

UNIT MODULE ANALOG INPUTS ANALOG OUTPUTS BINARY INPUTS BI NARY OUTPUTS

10VDC (GBAS 0-10V) • Leaving Solution Setpoint • Leaving Soln Temp • Compressors running

Generic Building Four inputs, which can Four outputs, which can • Demand Limit One output, which

Module • Ice Build Terminate Setpoint • Entering Soln Temp • Running at maximum

Automation System 0-

Human Interface (HI) • None • None • None • None

Module

64

(Ckt #1)

• Evap/Suction Temperature • Condenser Fan Speed • Low Pressure Cutout(Ckt #1) • Compressor Relay K3

(Ckt #2)

• Saturated Condenser • High Pressure Control (Ckt #1) • Condenser Fan 1A

Temperature Sensor (Ckt #1) • High Pressure Control (Ckt #2) • Condenser Fan 1B

• Saturated Condenser • Condenser Fan 1C

Temperature Sensor (Ckt #2) • Condenser Fan 2A

• Saturated Liquid Temp (Ckt #1) • Condenser Fan 2B

• Saturated Liquid Temp (Ckt #2) • Condenser Fan 2C

Interprocessor • None • None • None • None

Communications

Bridge (IPCB) Module

Multiple Compressor • Evap/Suction Temperature • Condenser Fan Speed • Compressor Proving (Ckt #1) • Compressor Relay K11

Module (MCM)

Temperature

• Saturated Liquid Temperature

Single Compressor • Evap/Suction Temperature • Condenser Fan Speed • Compressor Proving • Compressor Relay K11

Module (SCM) • Saturated Condenser (Low Ambient) • Low Pressure Cutout • Compressor Relay K12

• Suction Pressure Ckt #1

• Suction Pressure Ckt #2

Module I/O Summary

UNIT MODULE ANALOG INPUTS ANALOG OUTPUTS BINARY INPUTS BINARY OUTPUTS

Superheat/Subcool • Liquid Pressure Ckt #1 • None • None • None

Module (SSM) • Liquid Pressure Ckt #2

Trane Communication • None • None • None • None

Interface (TCI)

Module

LonTalk Communication • None • None • None • None

Interface (LCI) Module

65

Index

Symbols

+ (Plus) Key...9
+ (Plus) Key...10;

- (Minus) Key...9

- (Minus) Key...10;
115V Control Circuit Switch (1S1)...7;

Disconnecting Switches

24V Transformer Switch (1S70)...7;

Disconnecting Switches

See

Data Manipulation Keys

See

Data Manipulation Keys

See

See

Power

Power

A

Active Setpoint .........................................................5

AUTO Key ................................................................ 9

C

CANCEL Key ........................................................... 8

Cautions ................................................................... 4

Cold Generator Module ........................................... 6

Communications Link Problems ............................46

Compressor Module ................................................ 6

Compressor Protection Switch ................................ 5

CONFIGURATION Key ............................................ 8

CONFIGURATION Menu....................................... 36

Control Band ............................................................ 5

Control circuit switch (1S1) ...................................... 6

Control Parameters ................................................ 32

Control Point ............................................................ 5

Current Sensing Module .......................................... 6

CUSTOM Key .......................................................... 9

D

Data Manipulation Keys ........................................... 8

Deadband ................................................................ 5

DIAGNOSTICS Key ................................................. 8

Disconnect switch 1S14........................................... 6

E

Emergency Stop ...................................................... 5

ENTER Key.............................................................. 8

External Auto/Stop ................................................... 5

G

Generic Building Automation System ...................... 6

H

Head Pressure Control ..........................................26

HI module;

Human Interface Keypad ......................................... 8

See

Human Interface Module ......................................... 7

See

See

Figure 2

Figure 1

Human Interface Module

I

Ice Building ............................................................ 26

Information Format ................................................ 23

Interprocessor Communications Board ................... 6

Leaving Solution Setpoint ........................................ 5

Leaving Solution Temperature Control Point ........... 5

Literature Change History ........................................ 2

Loop Stabilization .................................................. 25

Low Ambient Compressor Lock-out ......................... 5

L

LonTalk .............................................................. 4,5,6

LonTalk Communication Interface

(LCI) module ........... 4,5,6,19,23,24,28,38,61,63

M

Manual disconnect switch 1S14 .............................. 6

See

Manual Disconnect Switch

Menu Keys ............................................................... 8

microelectronic control system ................................ 6

See

UCM Control System

Model Number Description ...................................... 4

Module I/O Summary ............................................. 62

N

NEXT Key ................................................................ 9

No Configuration ...................................................... 7

See

non-Trane building control systems;

Module

Generic BAS

66

P

PREVIOUS Key ....................................................... 9

R

Remote Human Interface ........................................ 5

See

Interprocessor Communication Module

Reset Amount Maximum ......................................... 5

Reset End Temperature ........................................... 5

Reset Start Temperature.......................................... 5

S

SCM or MCM;

SERVICE MODE Key .............................................. 8

SERVICE MODE Menu .........................................39

Setpoint Source Selection ..................................... 34

SETPOINTS Key ..................................................... 8

SETUP Menu ........................................................23

SETUP Key .............................................................. 8

STATUS Key ............................................................ 8

STATUS Menu ....................................................... 15

STOP Key ................................................................ 9

Superheat & Subcooling Module ............................. 6

See

Compressor Module

T

TEST START Key (SERVICE) ............................... 9

Trane Communications Interface Module.............. 6

See

Trane integrated comfort systems;

Communications Interface Module

Transformer switch 1S70 ....................................... 6

Trane

U

Unit Control Module ...............................................5

Unit Nameplate ......................................................4

Unit Operation Keys ............................................... 9

Unit Status (Unit Off or Stopped) ........................... 7

Unit Status (Unit On) .............................................. 7

W

Warnings ................................................................ 4

67

68