Trane Tracer CH.530 RLC-SVU01B-E4, Tracer CH.530 Owner's Manual

Tracer CH.530™

Chiller Control System

“HO” Design Sequence

RLC-SVU01B-E4

Owner
Manual

EasyView and DynaView Interfaces

RLC-SVU01B-E4

Foreword

These Installation, Operation, and
Maintenance instructions are given
as a guide to good practice in the
installation, start-up, operation, and
periodic maintenance by the user of
Tracer CH.530 chiller control
modules.

They do not contain the full service
procedures necessary for the
continued successful operation of
this equipment. The services of a
qualified service technician should
be employed, through the medium
of a maintenance contract with a
reputable service company.

Warranty

Warranty is based on the general
terms and conditions of the
constructor. The warranty is void if
the equipment is modified or
repaired without the written approval
of the constructor, if the operating
limits are exceeded, or if the control
system or the electrical wiring is
modified.

Damage due to misuse, lack of
maintenance, or failure to comply
with the manufacturer's instructions,
is not covered by the warranty
obligation.

If the user does not conform to the
rules of chapter "Maintenance," it
may entail cancellation of warranty
and liabilities by the constructor.

Reception

On arrival, inspect the unit before
signing the delivery note. Specify
any damage on the delivery note,
and send a registered letter of
protest to the last carrier of the
goods within 72 hours of delivery.
Notify the local sales office at the
same time.

The unit should be totally inspected
within 7 days of delivery. If any
concealed damage is discovered,
send a registered letter of protest to
the carrier within 7 days of delivery
and notify the local sales office.

Units are shipped with the
refrigerant operating or holding
charge and should be examined with
an electronic leak detector to
determine the hermetic integrity of
the unit. The refrigerant charge is not
included in the standard Warranty
Cover.

General information

About this manual

Cautions appear at appropriate
places in this instruction manual.
Your personal safety and the proper
operation of this machine require
that you follow them carefully.

The constructor assumes no liability
for installations or servicing
performed by unqualified personnel.

©American Standard Inc. 2004

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Contents

Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Reception . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Commonly Used Abbreviations . . . . . . . . . . . . . . . . . . . . .4

CH.530 Communications Overview . . . . . . . . . . . . . . . . . .5

Controls Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

EasyView Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Outputs: Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Diagnostic Reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

DynaView Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Key Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Controls Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

Training . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

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Commonly Used
Abbreviations

Commonly Used Abbreviations

Abbreviations and terms used in this manual are defined below.

BAS = Building Automation System

CAR = Circuit Shutdown, Auto Reset

CLS = Current Limit Set Point

CMR = Circuit Shutdown, Manual Reset

CPRS = Compressor

CWR = Chilled-Water Reset

CWS = Chilled-Water Set Point

EXV = Electronic Expansion Valve

FLA = Full Load Amperes

HACR = Heating, Air Conditioning, and Refrigeration

HVAC = Heating,Ventilating, and Air Conditioning

IFW = Informational Warning

LLID = Low Level Intelligent Device

LRA = Locked Rotor Amperes

MAR = Machine Shutdown, Auto Reset

MMR = Machine Shutdown, Manual Reset

PCWS = Front Panel Chilled-Water Set Point

PSIG = Pounds-per-Square-inch (gauge pressure)

RAS = Reset Action Set Point

RLA = Rated Load Amperes

RCWS = Reset Chilled-Water Set Point

RRS = Reset Reference Set Point

Tracer ™ = Type of Trane Building Automation System

UCLS = Unit Current-Limit Set Point

UCM = Unit Control Module (Microprocessor-based)

RLC-SVU01B-E4

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Controls Interface

Tracer CH.530

™

Communications Overview

The Trane CH.530 control system that
runs the chiller consists of several
elements:

•

The main processor collects data,
status, and diagnostic information,
and communicates commands to
the starter module and the LLID
(Low Level Intelligent Device) bus.
The main processor has an integral
display (EasyView or DynaView).

•

Higher-level modules (e.g., starter)
exist only as necessary to support
system-level control and
communications. The starter
module provides control of the
starter when starting, running, and
stopping the chiller motor. It also
processes its own diagnostics and
provides motor and compressor
protection.

•

Low Level Intelligent Device (LLID)
bus. The main processor
communicates to each input and
output device (e.g., temperature
and pressure sensors, low voltage
binary inputs, analog input/output)
all connected to a four-wire bus,
rather than the conventional
control architecture of signal wires
for each device.

•

The communication interface to a
building automation system (BAS).

•

A service tool to provide all service
and maintenance capabilities.

Main processor and service tool
software is downloadable from
www

.Trane.com.

EasyView or DynaView provides bus
management. It has the task of
restarting the link, or filling in for
what it sees as “missing” devices
when normal communications have
been degraded. Use of TechView may
be required.

The CH.530 uses the IPC3 protocol
based on RS485 signal technology
and communicating at 19.2 Kbaud, to
allow three rounds of data per
second on a 64-device network. A
typical four-compressor RTAC will
have approximately 50 devices.

Most diagnostics are handled by the
EasyView or DynaView. If a
temperature or pressure is reported
out of range by an LLID, the
EasyView or DynaView processes
this information and calls out the
diagnostic. The individual LLIDs are
not responsible for any diagnostic
functions. The only exception to this
is the Starter module.

Note: It is imperative that the CH.530
Service Tool (TechView)be used to
facilitate the replacement of any LLID
or reconfigure any chiller
component. TechView is discussed
later in this section.

Controls Interface

Each chiller is equipped with either
the EasyView or DynaView interface
to the CH.530. EasyView provides
basic monitoring and control
functions in a language-independent
format, with an LED display in an
enclosure. DynaView has the
capability to display additional
information to the advanced
operator, including the ability to
adjust settings. Multiple screens are
available and text is presented in
multiple languages as ordered.

TechView can be connected to either
the EasyView or DynaView module,
and provides further data,
adjustment capabilities, and
diagnostics information using
downloadable software.

RLC-SVU01B-E4

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The EasyView interface to the CH.530
consists of a display in a 9.75" wide,
8" high, and 1.6" deep [250 mm x 205
mm x 41 mm] enclosure. The
enclosure contains a circuit card and
a weathertight connection for the
RS232 TechView. Use of TechView is
discussed in a separate publication.

The LED display contains basic
information for machine monitoring
and control. The information
presented uses symbols and is
language-independent.

Outputs: Display

Default Display: During normal

operation, Evaporator Leaving-Water
Temperature is shown.

Set Point Display: The Evaporator
Leaving-Water Temperature Set Point
is displayed if the increment (+) or
decrement (-) key is pressed. The
Evaporator Leaving-Water Set Point
will remain on the screen for three
seconds after increment or
decrement is released.

NOTE: Even if the chiller is in an “Ice
Building Mode” operation, the
display will continue to show the
Leaving Water Temperature and the
Leaving Water Temperature (Chilled
Water) Setpoint. It will NOT display
the Evaporator Entering Water
Temperature or the Ice Termination
Setpoint even when they are active
during the “Ice Building” mode of
operation.

Diagnostic and Interlock Display:
When in a diagnostic or interlock
condition, the front panel will
continue to show the default or set
point display as appropriate. When in
a diagnostic condition (service
wrench LED flashes) or interlock
condition (interlock LED flashes),
simultaneously depressing the
increment (+) and decrement (-) keys
will cause the most-severe active
diagnostic or interlock to be
displayed in code for 3-5 seconds,
after which the front panel will revert
to the Evaporator Leaving-Water
Temperature. Only the most-recent
diagnostic will be retained. The Trane
standard 3-digit diagnostic codes are
listed at the end of this section.

The
diagnostic readout should be noted
and is for the use of Trane service.

EasyView Interface

EasyView Interface

Figure 1 – EasyView Display

Legend

1. Display

2. Set Point

3. Interlock

4. Service

5. Increment Button

6. Auto LED

7. AUTO Button

8. STOP Button

9. Decrement Button

1

2

3

4

5

6

7

8

9

RLC-SVU01B-E4

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EasyView Interface

Auto LED

The Auto LED is used to indicate the
position of the AUTO/STOP keys as
though they were a physical toggle
switch. When the AUTO key is
depressed, the Auto LED will be lit. If
the unit cannot enter the Auto mode,
that information will be conveyed by
the lighting of either the diagnostic
LED or the interlock LED. When the
STOP key is depressed, the Auto LED
will extinguish.

Set Point LED

The Set Point
LED is on solid when the display is
showing “Evaporator Leaving-Water
Set Point.”

Interlock LED

The interlock LED flashes when there
is an interlock condition.

Interlock is used to indicate that the
machine is prevented from running,
due to an external status that the
operator could probably correct, and
is not related to a chiller or
component failure. The interlock
conditions for RTAC are as follows:

Interlock Condition Code

No Chilled-Water Flow ED

External Auto/Stop 100

Low condenser start
inhibit 200

BAS Auto/Stop 300

Low-Ambient Start Inhibit 200

1

BAS here and elsewhere in this manual refers

to the Trane Tracer™ Equipment Controller.

The interlock LED will stop flashing
when the condition that prevents
machine operation is corrected. No
reset is required.

Service LED

The service LED flashes when there
is a diagnostic that is

not

an interlock

condition.

This is the standard diagnostic
indication of the machine. Contact a

qualified service agency to correct
the problem. Before calling, press

the (+) and (-) keys simultaneously to
determine the diagnostic code.
Record this code and report it to the
service agency. If you suspect that a
nuisance trip has occurred, the
diagnostic can be reset. (See section
on diagnostic reset.)

Inputs:

Increment Key (+)

Pressing the increment key while the
set point light is off will cause it to
turn on continuously and display the
Evaporator Leaving-Water
Temperature Set Point for three
seconds.

Pressing the increment key while the
Set Point light is on will increase it
by 0.1 degree (F or C).

Holding the increment key down will
increase it repeatedly at a rate of
5°F/sec [2.77°C/sec] until the Set
Point is equal to the Evaporator
Leaving-Water Set Point machine
maximum

Decrement Key (-)

Pressing the decrement key while
the set point light is off will cause it
to turn on continuously and the
display will display the Evaporator
Leaving-Water Temperature.

Pressing the decrement key while
the Set Point light is on will cause
the Set Point to decrease by 0.1
degree (F or C).

Holding the decrement key down will
decrease the set point repeatedly at
a rate of 2°F/sec [0.56°C/sec] until the
set point is equal to the Evaporator
Leaving-Water Set Point relative
minimum.

AUTO Key ( | )

Pressing the AUTO key will send a
request to the chiller to turn on. If no
other device or condition is
preventing the chiller from starting
and

there is a need to cool

, the
chiller will attempt a start. (See Auto
LED and diagnostic reset for further
description.)

STOP Key (O)

Pressing the STOP key will send a
request to the chiller to stop. The
chiller will then begin the shutdown
sequence and the Auto LED will
extinguish.

RLC-SVU01B-E4

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Diagnostic Reset

If the machine is in a
diagnostic condition
(LED is flashing), a
transition from Stop to Auto will
reset the diagnostic. If the machine is
in the Stop State (Auto LED off),
depressing the AUTO key will reset
all diagnostics. If the machine is in
the Auto State (Auto LED on), it must
be put in the Stop state and
sequenced back to Auto in order to
reset.

SI vs. English (I-P)

The Leaving-Water Set Point and the
Leaving-Water Temperature are
displayed in either SI or English (I-P)
units as determined by the
appropriate setting within the
processor. A right-justified C or F will
indicate SI or English.

Power-Up Test

On power-up, a means to test the
display and annunciators is required.
To demonstrate that all segments
and LEDs can be lighted, EasyView
will light all segments and
annunciators for approximately 2
seconds. To demonstrate that no
elements are stuck on, EasyView will
turn off all segments and
annunciators for approximately 2
seconds. Normal operation will
follow.

EasyView Interface

RLC-SVU01B-E4

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DynaView Interface

DynaView Interface

The DynaView and EasyView share
the same enclosure design:
weatherproof and durable plastic for
use as a stand-alone device on the
outside of the unit or mounted
nearby.

The display on DynaView is a 1/4
VGA display with a resistive touch
screen and an LED backlight. The
display area is approximately
4 inches wide by 3 inches high
[102 mm x 60 mm].

Key Functions

In this touch screen application, key
functions are determined completely
by software, and change depending
upon the subject matter currently
being displayed. The basic touch­screen functions are outlined below.

Radio Buttons

Radio buttons show one menu
choice among two or more
alternatives, all visible. (It is the
AUTO button in Figure 2.) The radio­button model mimics the buttons
used on old-fashioned radios to
select stations. When one is pressed,
the one that was previously pressed
“pops out” and the new station is
selected. In the DynaView model the
possible selections are each
associated with a button. The
selected button is darkened,
presented in reverse video to
indicate it is the selected choice. The
full range of possible choices, as well
as the current choice, is always in
view.

Spin Value Buttons

Spin values are used to allow a
variable set point to be changed,
such as leaving-water set point. The
value increases or decreases by
touching the increment (+) or
decrement (-) arrows.

Action Buttons

Action buttons appear temporarily
and provide the user with a choice
such as Enter or Cancel.

Hot Links

Hot links are used to navigate from
one view to another view.

File-Folder Tabs

File-folder tabs are used to select a
screen of data. Just like tabs in a file
folder, these serve to title the folder
or screen selected, as well as to
provide navigation to other screens.
In DynaView, the tabs are in one row
across the top of the display. The
folder tabs are separated from the
rest of the display by a horizontal
line. Vertical lines separate the tabs
from each other. The folder that is
selected has no horizontal line under
its tab, thereby making it look like a
part of the current folder (as would
an open folder in a file cabinet). The
user selects a screen of information
by touching the appropriate tab.

Figure 2 – DynaView Display

Legend

1. File folder tabs

2. Page-by-page scroll up

3. Line-by-line scroll up/down

4. Page-by-page scroll down

5. Navigator

6. Reduce contrast/viewing angle

7. Radio buttons

8. Increase contrast/viewing angle

The file folder tabs across the top of
the screen are used to select the
various display screens.
Scroll arrows are added if more file
tabs (choices) are available. When
the tabs are at the left most position,
the left navigator will not show and
only navigation to the right will be
possible. Likewise when the right
most screen is selected, only left
navigation will be possible.
The main body of the screen is used
for description text, data, setpoints,
or keys (touch sensitive areas). The
Chiller Mode is displayed here.
The double up arrows cause a page­by-page scroll either up or down. The
single arrow causes a line by line
scroll to occur. At the end of the
page, the appropriate scroll bar will
disappear.
A double arrow pointing to the right
indicates more information is
available about the specific item on
that same line. Pressing it will bring
you to a subscreen that will present
the information or allow changes to
settings.
The bottom of the screen (Fixed
Display) is present in all screens and
contains the following functions. The
left circular area is used to reduce
the contrast/viewing angle of the
display. The right circular area is
used to increase the contrast/viewing
angle of the display. The contrast

may require re-adjustment at
ambient temperatures significantly
different from those present at last
adjustment.
The other functions are critical to
machine operation. The AUTO and
STOP keys are used to enable or
disable the chiller. The key selected is
in black (reverse video). The chiller
will stop when the STOP key is
touched and after completing the
Run Unload mode.
Touching the AUTO key will enable
the chiller for active cooling if no
diagnostic is present. (A separate
action must be taken to clear active
diagnostics.)
The AUTO and STOP keys take
precedence over the Enter and
Cancel keys. (While a setting is being
changed, AUTO and STOP keys are
recognized even if Enter or Cancel
has not been pressed.)
The ALARMS button appears only
when an alarm is present, and blinks
(by alternating between normal and
reverse video) to draw attention to a
diagnostic condition. Pressing the
ALARMS button takes you to the
corresponding tab for additional
information.

Controls Interface

Basic Screen Format

The basic screen format appears as:

8

1

2

3

4

5

6

7

5

Auto

Stop

Alarms

RLC-SVU01B-E4

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RLC-SVU01B-E4

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Front Panel Lockout
Feature

NOTE: The DynaView display and
Touch Screen Lock screen is shown
below. This screen is used if the
Display and touch screen and lock
feature is enabled. Thirty minutes
after the last keystroke, this screen is
displayed and the Display and Touch
Screen is locked out until the
sequence "159 <ENTER>" is pressed.

Until the proper password is entered,
there will be no access to the
DynaView screens including all
reports, setpoints, and
Auto/Stop/Alarms/Interlocks. The
password "159" is not programmable
from either DynaView or TechView.

Front Panel Display During
Cold Ambients

If the Display and Touch Screen Lock
feature is disabled, the following
screen is automatically displayed if
the DynaView Temperature is below
freezing and has been 30 minutes
after the last keystroke. Note: This
feature is provided to avoid
unintended actuations of the keypad,
which can occur due to ice build-up
on DynaView's exterior surfaces.
Also be aware that at extremes of
temperatures, the LCD display
screen will change its contrast from
the optimal adjustment made at
more normal temperatures.
It can appear washed out or blacked
out. Simply pressing the lower right
contrast control on the screen will
return the display to readable
condition.

NOTE: All screens shown in this
section are typical. Some screens
show all display options available,
only one of which may appear on a
line.

987

653

321

0

987

653

321

0

Controls Interface

DISPLAY AND TOUCH SCREEN ARE LOCKED

ENTER PASSWORD TO UNLOCK

Enter

Cancel

DISPLAY AND TOUCH SCREEN ARE LOCKED

ENTER “159 Enter”TO UNLOCK

Enter

Cancel

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The Mode Screen is only found on
software revisions 18 and later. This
screen provides a display for the top
level operating mode for each of the
components and sub-components of
the chiller (i.e. Chiller, Circuits, and
Compressors) that exist on the
Chiller as it is configured. The modes
are displayed as text only without
the hex codes.

In software revisions 17.0 and earlier,
the top level mode and the sub
mode for each component was
displayed on the respective
component tab on the first two lines.

The mode display of the first 3 lines
of the Compressor and Chiller
Screen tabs is eliminated with the
addition of the Mode Screen.

Controls Interface

Modes Screen

Modes

Chiller

Compressor

Auto

Stop

Chiller Mode:

Circuit 1 Mode:

Cpsr 1A Mode:

Cpsr 1B Mode:

Circuit 2 Mode:

Cpsr 2A Mode:

Cpsr 2B Mode:

Running

Running - Limit

Running

Running

Run Inhibit

Stopped

Stopped

Table 1 - Chiller Modes

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Description

The chiller is not running and cannot run without intervention. Further
information is provided by the sub-mode:

Chiller is stopped by DynaView (or EasyView). Stop button command
cannot be remotely overridden.

Chiller is stopped by DynaView (or EasyView). Panic Stop (by
pressing Stop button twice) - previous shutdown was manually
commanded to shutdown immediately without a run-unload or
pumpdown cycle - cannot be remotely overridden.

The chiller is stopped by a diagnostic that requires manual
intervention to reset.

The chiller is currently being inhibited from starting (and running), but
may be allowed to start if the inhibiting or diagnostic condition is
cleared. Further information is provided by the sub-mode:

The entire chiller is stopped by a diagnostic that may automatically
clear.

The chiller is inhibited from starting by Low Condenser Temperature­Inhibit is active below either -3.9°C (can be disabled with proper
freeze protection) or -18°C (limit set by design, cannot be disabled).
As an exception, this will not stop a chiller already running.

The chiller is inhibited from starting (and running) by an outdoor air
ambient temperature lower than a specified temperature - per user
adjustable settings and can be disabled.

The chiller is inhibited from starting (and running) by the "external
stop" hardwired input.

The chiller is inhibited from starting (and running) by command from
a Building Automation System via the digital communication link
(com 3 or com 5).

This is a transient mode - 15-min. max, and is only possible if the
chiller is in the Auto - Remote command mode. After a power up
reset, it is necessary to wait for valid communication from a BAS
(Tracer) to know whether to run or stay inhibited. Either valid
communication will be received from the BAS (Tracer), or a
communication diagnostic ultimately will result. In the latter case the
chiller will revert to Local control.

Controls Interface

Chiller Modes

Stopped (1)

Local Stop (2)

Panic Stop (2)

Diagnostic Shutdown - Manual Reset (2)

Other sub-modes are possible in
conjunction with at least one of the above
modes - See items below.
Diagnostic Shutdown - Auto ResetStart
Inhibited by Low Cond Temp Start
Inhibited by Low Ambient Temp Start
Inhibited by External Source Start
Inhibited by BAS

Waiting for BAS Communications
Ice Building to Normal Transition
Ice Building is Complete
Design Note: Maximum Capacity was
eliminated as annunciated mode prior to
any release.

Run Inhibit (1)

Diagnostic Shutdown - Auto Reset (2)

Start Inhibited by Low Cond Temp (2)

Start Inhibited by Low Ambient Temp (2)

Start Inhibited by External Source (2)

Start Inhibited by BAS (2)

Waiting for BAS Communications (2)

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Ice Building to Normal Transition (2)

Ice Building is Complete (2)

Auto (1)

Waiting For Evap Water Flow (2)

Waiting for Need to Cool (2)

Starting (1)

No Sub Modes Running (1)

Unit is Building Ice (2)

Running - Limited (1)

Capacity Limited by High Evap Water Temp
(2)

The chiller is inhibited from running for a brief period of time if it is
commanded from active ice building mode into normal cooling mode
via the ice building hardwired input or Tracer. This allows time for the
external system load to "switchover" from an ice bank to the chilled
water loop, and provides for a controlled pull down of the loop's
warmer temperature. This mode is not seen if the ice making is
automatically terminated on return brine temperature per the mode
below.

The chiller is inhibited from running as the Ice Building process has
been normally terminated on the return brine temperature. The chiller
will not start unless the ice building command (hardwired input or
BAS command) is removed or cycled.

The chiller is not currently running but can be expected to start at any
moment given that the proper conditions and interlocks are satisfied.
Further information is provided by the sub-mode:

The chiller will wait up to 4 minutes in this mode for evaporator water
flow to be established per the flow switch hardwired input.

The chiller will wait indefinitely in this mode, for an evaporator
leaving water temperature higher than the Chilled Water Setpoint plus
the Differential to Start.

The chiller is going through the necessary steps to allow the lead
circuit and lead compressor to start.

At least one circuit and one compressor on the chiller are currently
running. Further information is provided by the sub-mode:

The chiller is running in the Ice Building Mode, and either at or
moving towards full capacity available. Ice mode is terminated either
with the removal of the ice mode command or with the return brine
temperature falling below the Ice Termination Setpoint.

At least one circuit and one compressor on the chiller are currently
running, but the operation of the chiller as a whole is being actively
limited by the controls.

This mode will occur if both the OA temperature is above -4.4°C and
the Evaporator Leaving Water Temperature is above 23.9°C as is often
the case in a high temperature pull-down. While in this mode, no
compressors will be allowed to load past their minimum load
capacity step, but it will not inhibit compressor staging. This mode is
necessary to prevent nuisance trips due to Compressor Overcurrent
or High Pressure Cutout. Reasonable pull-down rates can still be
expected despite this limit.

Controls Interface

(1) Top level mode
(2) Sub-mode

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Controls Interface

Circuit Modes

Stopped (1)

Front Panel Lockout (2)

Diagnostic Shutdown - Manual Reset (2)

Other sub-modes are possible in
conjunction with at least one of the above
modes - See items below for their
descriptions: Diagnostic Shutdown - Auto
Reset Start Inhibited by External
SourceStart Inhibited by BAS

Run Inhibit (1)

Diagnostic Shutdown - Auto Reset (2)

Start Inhibited by External Source (2)

Start Inhibited by BAS (2)

Auto (1)

No Sub Modes
Starting (1)

No Sub Modes
Running (1)

Establishing Min. Cap - Low Diff pressure
(2)

Running - Limited (1)

Capacity Limited by High Cond Press (2)

Capacity Limited by Low Evap Rfgt Temp
(2)

Description

The given circuit is not running and cannot run without intervention.
Further information is provided by the sub-mode:

The circuit is manually locked out by the circuit lockout setting - the
nonvolatile lockout setting is accessible through either the DynaView
or TechView.

The circuit has been shutdown on a latching diagnostic.

The given circuit is currently being inhibited from starting (and
running), but may be allowed to start if the inhibiting or diagnostic
condition is cleared. Further information is provided by the sub­mode:

The circuit has been shutdown on a diagnostic that may clear
automatically.

The circuit is inhibited from starting (and running) by its "external
circuit lockout" hardwired input.

The circuit is inhibited from starting (and running) by command from
a Building Automation System via the digital communication link
(com 3 or com 5).

The given circuit is not currently running but can be expected to start
at any moment given that the proper conditions and interlocks are
satisfied.

The given circuit is going through the necessary steps to allow the
lead compressor on that circuit to start.

At least one compressor on the given circuit is currently running.
Further information is provided by the sub-mode:

The circuit is experiencing low system differential pressure and is
being force loaded, irregardless Chilled Water Temperature Control, to
develop pressure sooner.

At least one compressor on the given circuit is currently running, but
the capacity of the circuit is being actively limited by the controls.
Further information is provided by the sub-mode:

The circuit is experiencing condenser pressures at or near the
condenser limit setting. Compressors on the circuit will be unloaded
to prevent exceeding the limits.

The circuit is experiencing saturated evaporator temperatures at or
near the Low Refrigerant Temperature Cutout setting. Compressors on
the circuit will be unloaded to prevent tripping.

Table 2 - Circuit modes

RLC-SVU01B-E4

16

Controls Interface

Capacity Limited by Low Liquid Level (2)

Shutting Down (1)

Operational Pumpdown (2)

Front Panel Lockout (2)

Diagnostic Shutdown - Manual Reset (2)

Diagnostic Shutdown - Auto Reset (2)

Start Inhibited by External Source (2)

Start Inhibited by BAS (2)

Service Override (1)

Service Pumpdown (2)

The circuit is experiencing low refrigerant liquid levels and the EXV is
at or near full open. The compressors on the circuit will be unloaded
to prevent tripping.

The given circuit is still running but shutdown is imminent. The circuit
is going through either a compressor run-unload mode or a circuit
operational pumpdown to dry out the evaporator (cold OA ambient
only). Shutdown is necessary due to one (or more) of the following
sub-modes:

The circuit is in the process shutting down by performing an
operational pumpdown just prior to stopping the last running
compressor. The EXV is commanded closed. Pumpdown will
terminate when both the liquid level and the evaporator pressure.

The circuit has been manually locked out by the circuit lockout setting
and is in the process of shutting down - the nonvolatile lockout ­setting is accessible through either the DynaView or TechView.

The circuit is in the process of shutdown due to a latching diagnostic.

The circuit is in the process of shutdown due to a diagnostic that may
automatically clear.

The circuit is in the process of shutdown due to a command from the
external circuit lockout hardwired input.

The circuit is in the process of shutdown due to a command from the
Building Automation System (e.g. Tracer)

The given circuit is in a Service Override mode

The circuit is running with fan control, via a manual command to
perform a Service Pumpdown. Its respective EXV is being held wide
open, but the manual liquid line service valve should be closed.

(1) Top level mode
(2) Sub-mode

RLC-SVU01B-E4

17

Compressor Modes

Stopped (1)

Diagnostic Shutdown - Manual Reset (2)

Service Tool Lockout (2)

Other sub-modes are possible in
conjunction with at least one of the above
modes - See items below for their
descriptions: Diagnostic Shutdown Auto
Reset Restart Inhibit

Run Inhibit (2)

Diagnostic Shutdown - Auto Reset (2)

Restart Inhibit (2)

Auto (1)

No Sub Modes
Starting (1)

No Sub Modes
Running (2)

Establishing Min. Capacity - High Oil Temp
(2)

Running - Limited (1)

Capacity Limited by High Current (2)

Description

The given compressor is not running and cannot run without
intervention. Further information is provided by the sub-mode:-

The compressor has been shutdown on a latching diagnostic.

The compressor has been shutdown due to a command from the
TechView Service Tool to be "locked out" and inoperative. This setting
is nonvolatile and operation can only be restored by using TechView
to "unlock" it.

The given compressor is currently being inhibited from starting (and
running*), but may be allowed to start if the inhibiting or diagnostic
condition is cleared. Further information is provided by the sub­mode:

The compressor has been shutdown on a diagnostic that may clear
automatically.

The compressor is currently unable to start due to its restart inhibit
timer. A given compressor is not allowed to start until 5 minutes has
expired since its last start.

The given compressor is not currently running but can be expected to
start at any moment given that the proper conditions occur.

The given compressor is going through the necessary steps to allow
it to start. (This mode is short and transitory)

The given compressor is currently running. Further information is
provided by the sub-mode:

The compressor is running and is being forced loaded to its step load
point, without regard to the leaving water temperature control, to
prevent tripping on high oil temperature.

The given compressor is currently running, but its capacity is being
actively limited by the controls. Further information is provided by the
sub-mode:

The compressor is running and its capacity is being limited by high
currents. The current limit setting is 120% RLA (to avoid overcurrent
trips) or lower as set by the compressor's "share" of the active ­current limit (demand limit) setting for the entire chiller.

Controls Interface

Table 3- Compressor Modes

RLC-SVU01B-E4

18

Controls Interface

Capacity Limited by Phase Unbalance (2)

Shutting Down (1)

Diagnostic Shutdown - Manual Reset (2)

Diagnostic Shutdown - Auto Reset (2)

Service Tool Lockout (2)

The compressor is running and its capacity is being limited by
excessive phase current unbalance.

The given compressor is still running but shutdown is imminent. The
compressor is going through either a run-unload mode or is the
active compressor in the operational pumpdown cycle for its circuit.
Shutdown is either normal (no sub-mode displayed) or due the
following sub-modes:

The compressor is in the process of shutdown due to a latching
diagnostic.

The compressor is in the process of shutdown due to a diagnostic
that may clear automatically.

The compressor is in the process of shutdown due to a command
from the TechView Service Tool to be "locked out" and inoperative.
This setting is nonvolatile and operation can only be restored by
using TechView to "unlock" it.

(1) Top level mode
(2) Sub-mode

RLC-SVU01B-E4

19

Chiller Screen

The chiller screen is a summary of
the chiller activity.

Controls Interface

Modes

Chiller

Compressor

AAutouto

Stop

Evap Leaving Water Temperature:

Evap Entering Water Temperature:

Active Chilled Water Setpoint:

Active Current Water Setpoint:

Outdoor Air Temperature:

Software Version:

7 C

12 C

7 C

100%

22 C

18.0

Table 4 - Chiller screen

Description Resolution Units

Evap Leaving Water Temperature X.X F / C
Evap Entering Water Temperature X.X F / C
Active Chilled Water Setpoint X.X F / C
Active Current Limit Setpoint X % RLA
Out Door Temperature X.X F / C
Software Type RTA Text
Software Version X.XX Text

RLC-SVU01B-E4

20

Controls Interface

Compressor Screen

The compressor screen displays
information for the compressors in
the format shown. The top line of
radio buttons allows you to select
the compressor of interest. The next
3 lines show the compressor
operating mode. The compressor
radio buttons and the compressor
operating mode lines don't change
as you scroll down in the menu.

The top screen has no upward scroll
keys. The single arrow down scrolls
the screen one line at a time. As
soon as the display is one line away
from the top, the upward pointing
arrow appears.

The last screen has a single arrow to
scroll upward one line at a time.
When in the last position, the single
down arrow disappears.

Each compressor has its own screen
depending on which radio key is
pressed. When toggling between
compressor screens, say to
compare starts and run time, the
same lines can be seen without
additional keystrokes. For example,
toggling from the bottom of the
compressor 1A menu accesses the
top of the compressor 2A menu.

Modes

Chiller

Compressor

Auto

Stop

Amos L1 L2 L3:

% RLA:

Unit Volts:

Oil Temperature:

Intermediate Oil Pressure:

Suction Pressure:

55.0 65.2 54.3

86.0 88.4 84.3

460

35 C

792 kPa

228 kPa

1A

1B

2A

2B

Description Resolution Units

Amps L1 L2 L3 XXX Amps
% RLA L1 L2 L3 X.X % RLA
Unit Volts XXX Volts
Oil Temperature X.X F / C
Intermediate Oil Pressure X.X Pressure
Suction Pressure X.X Pressure
Starts/ Run Hours X, XX:XX hr:min

Table 5 - Compressor screen

RLC-SVU01B-E4

21

Controls Interface

Refrigerant Screen

The refrigerant screen displays
those aspects of the chiller related to
the refrigerant circuits.

Description Resolution Units

Cond Rfgt Pressure Ckt1/Ckt2 X.X Pressure
Sat Cond Rfgt Temp Ckt1/Ckt2 X.X F / C
Evap Rfgt Pressure Ckt1/Ckt2 X.X Pressure
Sat Evap Rfgt Temp Ckt1/Ckt2 X.X F / C
Evap Approach Temp Ckt1/Ckt2 X.X F / C
Rfgt Liquid Level Ckt1/Ckt2 X.X Height

Table 6 - Refrigerant screen

Chiller

Compressor

Rfgt.

Auto

Stop

Cond Rfgt Pressure:

Sat Cond Rfgt Temp:

Evap Rfgt Pressure:

Sat Evap Rfgt Temp:

Evap Approach Temp:

Rfgt Liquid Level:

Ckt 1

Ckt 2

1275 1275 kPa

51.7 51.7 C

206 206 kPa

1.1 1.1 C

2.2 2.2 C

2.5 -2.5 mm

RLC-SVU01B-E4

22

Controls Interface

Setpoint Screen

The setpoint screen is a two-part
screen. Screen 1 lists all setpoints
available to change along with their
current value. The operator selects a
setpoint to change by touching
either the verbal description or
setpoint value. Doing this causes the
screen to switch to Screen 2.

In Screen 1 the language setpoint
will always be the last setpoint in
the list. This will facilitate language
changes by placing that control in a
standard position across all CH.530
product lines.

Screen 2 displays the current value
of the chosen setpoint in the upper
½ of the display.

It is displayed in a changeable
format consistent with its type.
Binary setpoints are considered to
be simple two state enumeration
and will use radio buttons. Analog
setpoints are displayed as spin
buttons. The lower half of the screen
is reserved for help screens.

Modes

Chiller

Compressor

AAutouto

Stop

Auto Local or Remote:

Front Panel Chilled Water Setpoint:

Front Panel Current Limit Setpoint:

Condenser Limit Setpoint:

Low Ambient Lockout Setpt:

Low Ambient Lockout:

Local

7 C

100%

XX % HPC

1.7 C

Enabled

RLC-SVU01B-E4

23

Description Resolution or Text Units

Auto Local or Remote Remote/Local Text
Front Panel Chilled Water Setpoint X.X F / C
Front Panel Current Limit Setpoint XXX % RLA
Differential to Start X.X Temperature
Differential to Stop X.X Temperature
Condenser Limit Setpoint Enable/Disable Text
Low Ambient Lockout Setpoint X.X Temperature
Low Ambient Lockout Enable/Disable Text
Ice Build Enable/Disable Text
Front Panel Ice Termination Setpoint X.X Temperature
Comp 1A Pumpdown Pumpdown/Abort Text
Comp 1B Pumpdown Pumpdown/Abort Text
Comp 2A Pumpdown Pumpdown/Abort Text
Comp 2B Pumpdown Pumpdown/Abort Text
EXV Ckt 1 Open Auto/Open Text
EXV Ckt 2 Open Auto/Open Text
Front Panel Ckt 1 Lockout Locked Out/Not Locked Out Text
Front Panel Ckt 2 Lockout Locked Out/Not Locked Out Text
Ext Chilled Water Setpoint X.X F / C
Ext Current Limit Setpoint XXX % RLA
Date Format mmm dd yyyy, dd mm yyyy Text
Date Text
Time Format 12 hr, 24 hr Text
Time of Day Text
Keypad/Display Lockout Enable/Disable Text
Display Units SI, English Text
Pressure Units Absolute, Gauge Text
Language Selection Downloaded from TechView Text

Controls Interface

Table 7 - Setpoint screen

RLC-SVU01B-E4

24

Option Condition(s) Explanation

Ice Building Enable/Disable

Cprsr Pumpdown (1) Avail

Not Avail

Pumpdown

EXV Ckt Open
(For Authorized Service Use Only (2)) Avail

Not Avail

Open

Ckt Lockout Locked Out

Not Locked Out

Ext. Chilled Water Setpt Enable/Disable

Ext. Current Limit Setpt Enable/Disable

(1) Pumpdown procedures are discussed in the chiller installation-operation-maintenance manual.
(2) Used for liquid level control or to recover from pumpdown

Controls Interface

Table 8 - Setpoint Options/Conditions Displayed

If feature is installed, operation can
be initiated or stopped

Pumpdown is allowed: only with
unit in Stop or when circuit is
locked out

Pumpdown is not allowed because
unit is operating or pumpdown has
been completed

State is displayed while
pumpdown is in progress

Indicates EXV is closed but can be
opened manually since unit is in
Stop or circuit is locked out

EXV is closed but cannot be
opened manually since unit is
operating

State is displayed when EXV is
open. Unit will not start with EXV
manually set open, but will initiate
valve closure first.

Circuit is locked out at Front Panel;
other circuit may be available to
run

Circuit is not locked out and is
available to run

Allows unit to control setpoint;
otherwise another loop controller
in line will control, as optionally
wired.

Allows unit to control setpoint;
otherwise another loop controller
in line will control, as optionally
wired.

RLC-SVU01B-E4

25

The diagnostic screen is accessible
by either pressing the blinking
ALARMS key or by pressing the
Diagnostic tab on the screen tab
selection.

A hex code and a verbal description
appears on the display as shown
typically above.

This is the last active diagnostic.
Pressing the "Reset All Active
Diagnostics" will reset all active
diagnostics regardless of type,
machine or refrigerant circuit.
Compressor diagnostics, which hold
off only one compressor, are treated
as circuit diagnostics, consistent with
the circuit to which they belong. One
circuit not operating will not shut the
chiller down. Viewing the
"Compressor" screen will indicate
whether a circuit is not operating
and for what reason.

A complete listing of diagnostics and
codes is included in the Diagnostic
Section.

Power-Up EasyView

Scenario 1: On Power-Up EasyView
will progress through two screens if
an application is not present.

First Screen, Version # of the Boot,
only the version # extension is
displayed.

This screen will display for 3-5
seconds and move on to the second
screen.

Second Screen, Application or No
Application.

This screen will display "-APP" for as
long as it remains powered.

Scenario 2: On Power-Up EasyView
will progress through 5 screens if an
application is present.

First Screen, Version # of the Boot,
only the version # extension is
displayed.

This screen will display for 3-5
seconds and move on to the second
screen.

Second Screen, Application or No
Application.This screen will display
"APP" for 3-5 seconds and move on
to the third screen.

Third screen, First screen of the
Application, segment and LED test.

This screen will turn on all LED's and
segments for 3-5 seconds and move
on to the fourth screen.

Fourth Screen, splash screen.

This screen will display CH.530 for 3­5 seconds and move on to the fifth
screen.

Fifth Screen, the Leaving Water
Temperature.

Controls Interface

Diagnostic Screen

Rfgt

Set Point

Diagnostic

Stop

Auto

[01] 10: 59 AM Nov 26, 2001:

Evaporator Water Flow Overdue:

[02] 10: 56 AM Nov 26, 2001:

Low Chilled Water Temp: Unit Off:

[03] 10: 55 AM Nov 26, 2001:

Low Evaporator Temp: Unit Off:

Alarms

Reset Diags

RLC-SVU01B-E4

26

Power-Up DynaView

On Power-Up, DynaView will
progress through 3 screens:

First Screen, Version # of the Boot,
full version # displayed.

This screen will display for 5 seconds
and move on to the second screen.
The contrast will also be adjustable
from this screen.

Second Screen, Application or No
Application.

This screen will display for 5 seconds
"A Valid Application Is Present" or "A
Valid

Application Is Not Present" and move
on to the third screen.

Third Screen, First screen of the
Application, the Chiller Tab.

Display Formats

Units

Temperature settings are in °F or °C,
depending on Display Units settings.
Settings can be entered in tenths or
whole degrees depending on a menu
setting at the TechView.

Dashes ("-----") appearing in a
temperature or pressure report,
indicates that the value is invalid or
not applicable.

Languages

English plus two alternate languages
may be installed with DynaView and
will reside in the main processor.
English will always be available.
Alternate languages must be
installed using TechView, Software
Download View.

TechView Interface

TechView is the PC (laptop) based
tool used for servicing Tracer CH.530.
Technicians that make any chiller
control modification or service any
diagnostic with Tracer CH.530 must
use a laptop running the software
application "TechView." TechView is a
Trane application developed to
minimize chiller downtime and aid
the technicians' understanding of
chiller operation and service
requirements.

NOTE: Important: Performing any
Tracer CH.530 service functions
should be done only by a properly
trained service technician. Please

contact your local Trane service
agency for assistance with any
service requirements.

TechView software is available via
Trane.com.

(http://www.trane.com/commercial/s
oftware/tracerch530/)

This download site provides a user
the TechView installation software
and CH.530 main processor software
that must be loaded onto your PC in
order to service a CH.530 main
processor. The TechView service tool
is used to load software into the

Tracer CH.530 main processor.

Minimum PC requirements to install
and operate TechView are:

• Pentium II or higher processor

• 128Mb RAM

• 1024 x 768 resolution of display

• CD-ROM

• 56K modem

• 9-pin RS-232 serial connection

• Operating system - Windows 2000

• Microsoft Office (MS Word, MS
Access, MS Excel)

• Parallel Port (25-pin) or USB Port

NOTE: TechView was designed for
the proceeding listed laptop
configuration. Any variation will
have unknown results. Therefore,
support for TechView is limited to
only those laptops that meet the
specific configuration listed here.
Only laptops with a Pentium II class
processor or better are supported;
Intel Celeron, AMD, or Cyrix
processors are not supported.

TechView is also used to perform any
CH.530 service or maintenance
function. Servicing a CH.530 main
processor includes:

• Updating main processor software

• Monitoring chiller operation

• Viewing and resetting chiller
diagnostics

• Low Level Intelligent Device (LLID)
replacement and binding

• Main processor replacement and
configuration modifications

• Setpoint modifications

• Service overrides

Controls Interface

RLC-SVU01B-E4

27

Controls Interface

Software Download

Instructions for First Time TechView
Users

1. Create a folder called "CH.530" on
your C:\ drive. You will select and
use this folder in subsequent
steps so that downloaded files are
easy to locate.

2. Download the Java Runtime

installation utility file onto your
PC in the CH.530 folder (please
note that this does not install Java
Runtime, it only downloads the
installation utility).

- Click on the latest version of Java

Runtime shown in the TechView
Download table.

- Select "Save this program to disk"

while downloading the files (do not
select "Run this program from its
current location").

3. Download the TechView

installation utility file onto your
PC in the CH.530 folder (please
note that this does not install
TechView, it only downloads the
installation utility).

- Click on the latest version of

TechView shown in the TechView
Download table.

- Select "Save this program to disk"

while downloading the files (do not
select "Run this program from its
current location").

4. Remember where you

downloaded the files (the
"CH.530" folder). You will need to
locate them to finish the
installation process.

5. Proceed to "Main Processor

Software Download" page and
read the instructions to download
the latest version of main
processor installation files.

Note: you will first select the chiller
type to obtain the available file
versions.

6. Select the product family. A table

with the download link will appear
for that product family.

7. Download the main processor
software onto your PC in the
CH.530 folder (please note that
this does not install the main
processor, it only downloads the
installation utility).

- To do this, click on the latest
version of the main processor.

- Select "Save this program to disk"
while downloading the files (do not
select

("Run this program from its current
location").

8. Remember where you

downloaded the files (the
"CH.530" folder). You will need to
locate them to finish the
installation process.

9. To complete the installation

process, locate the installation
utilities you down-loaded into the
CH.530 folder. If necessary, use
your PC's file manager to locate
the downloaded files.

10. Install the applications in the

following order by double­clicking on the install program
and following the installation
prompts:

- Java Runtime Environment
(JRE_VXXX.exe)

Note: During the Java Runtime
Environment installation, you may
be prompted to "select the default
Java Runtime for the system
browsers..." Do not select any
system browsers at this step. There
should be no default browsers
selected for proper operation.

- TechView (620 0-0347-VXXX.exe)

- The main processor (6200-XXXX­XX-XX.exe).

- The main processor program will
self extract to the proper folder
within the

TechView program directory,
provided the TechView program is
properly installed on the C:\ drive.

11. Connect your PC to the CH.530

main processor using a standard
9-pin male/9-pin female RS-232
cable.

12. Run the TechView software by

selecting the TechView icon
placed on your desktop during
the installation process. The
"Help...About" menu can be
viewed to confirm proper
installation of latest versions.

398

RLC-SVU01B-E4

28

Diagnostics

NonLatch The BAS was setup as

"installed" at the MP and the
Comm 3 LLID lost
communications with the BAS
for 15 contiguous minutes after
it had been established. Refer
to Section on Setpoint
Arbitration to determine how
setpoints and operating modes
may be effected by the comm
loss. The chiller follows the
value of the Tracer Default Run
Command which can be
previously written by Tracer
and stored nonvolatilely by the
MP (either use local or
shutdown)

Reset
Level

BAS Communication
Lost

Hex
Code

Persistence

Special

Severity

The following Diagnostic Table
contains all diagnostics possible
arranged alphabetically by the name
assigned to each diagnostic. Not all
diagnostics are available unless
TechView is installed.

Legend to Diagnostics Table

Hex Code: 3-digit code used to

uniquely identify diagnostics.

Diagnostic Name: Name of the
diagnostic as it appears at DynaView
and/or TechView displays.

Severity: Defines the action of the
above effect.

Immediate

means an
instantaneous shutdown of the
affected portion.

Normal

means
routine or friendly shutdown of the
affected portion.

Special Mode

means a particular mode of
operation is invoked, but without
shutdown, and

Info

means an
Informational Note or Warning is
generated.

Persistence: Defines whether or not
the diagnostic and its effects are to
be manually reset (Latched), or can
be either manually or automatically
reset (Nonlatched).

Criteria: Quantitatively defines the
criteria used in generating the
diagnostic and, if nonlatching, the
criteria for auto reset.

Reset Level: Defines the lowest level
of manual diagnostic reset
command which can clear the
diagnostic. The manual diagnostic
reset levels in decreasing order of
priority are: Local, Remote and Info.
For example, a diagnostic that has a
reset level of Remote, can be reset
by either a remote diagnostic reset
command or by a local diagnostic
reset command, but not by the
lower priority Info Reset command.

Table 9 - Diagnostics

Diagnostic Name and
Source

Criteria

Remote

390

2E6

8A

5EF

29

RLC-SVU01B-E4

Diagnostics

NonLatch The BAS was setup as

"installed" and the BAS did not
communicate with the MP
within 15 minutes after power­up. Refer to Section on
Setpoint Arbitration to
determine how setpoints and
operating modes may be
effected. Note: The original
requirement for this was 2
minutes, but was implemented
at 15 minutes for RTAC.

Reset
Level

BAS Failed to
Establish
Communication

Hex
Code

Persistence

Special

SeverityDiagnostic Name and

Source

Criteria

Remote

Latch The real time clock had

detected loss of its oscillator at
some time in the past. This
diagnostic can be effectively
cleared only by writing a new
value to the chiller's time clock
using the TechView or
DynaView's "set chiller time"
functions.

Check Clock

Info

Remote

NonLatch The entering evaporator water

temp fell below the leaving
evaporator water temperature
by more than 1°C for 55°C-sec.
For RTAC this diagnostic
cannot reliably indicate loss of
flow, but can warn of improper
flow direction through the
evaporator, misbound
temperature sensors, or other
system problems.

Chilled Water Flow
(Entering Water
Temperature)

Info

Remote

Latch Continual loss of

communication between the
MP and the Functional ID has
occurred for a 30 second period

Comm Loss: Chilled
Water Flow Switch

Immediate

Remote

5F2

5F3

694

695

5DE

68E

69E

68F

69F

5E4

5E3

6BB

RLC-SVU01B-E4

30

Latch Same as Comm Loss: Chilled

Water Flow Switch

Reset
Level

Comm Loss: Cond Rfgt
Pressure, Circuit #1

Hex
Code

Persistence

Immediate

SeverityDiagnostic Name and

Source

Criteria

Remote

Latch Same as Comm Loss: Chilled

Water Flow Switch

Comm Loss: Cond Rfgt
Pressure, Circuit #2

Immediate

Remote

Latch Same as Comm Loss: Chilled

Water Flow Switch

Comm Loss: Electronic
Expansion Valve,
Circuit #1

Normal

Remote

Latch Same as Comm Loss: Chilled

Water Flow Switch

Comm Loss: Electronic
Expansion Valve,
Circuit #2

Normal

Remote

Latch Same as Comm Loss: Chilled

Water Flow Switch

Comm Loss:
Emergency Stop

Normal

Remote

Latch Same as Comm Loss: Chilled

Water Flow Switch

Comm Loss: Evap Oil
Return Valve, Cprsr 1A
Valve, Cprsr 1B

Normal

Remote

Latch Same as Comm Loss: Chilled

Water Flow Switch

Comm Loss: Evap Oil
Return

Normal

Remote

Latch Same as Comm Loss: Chilled

Water Flow Switch

Comm Loss: Evap Oil
Return Valve, Cprsr 2A

Normal

Remote

Latch Same as Comm Loss: Chilled

Water Flow Switch

Comm Loss: Evap Oil
Return Valve, Cprsr 2B

Normal

Remote

Latch Same as Comm Loss: Chilled

Water Flow Switch

Comm Loss:
Evaporator Entering
Water Temperature

Special
Mode

Remote

Latch Same as Comm Loss: Chilled

Water Flow Switch

Comm Loss:
Evaporator Leaving
Water Temperature

Normal

Remote

Latch Same as Comm Loss: Chilled

Water Flow Switch

Comm Loss:
Evaporator Rfgt Drain
Valve - Ckt 1

Normal

Remote

Diagnostics

RLC-SVU01B-E4

31

6BC

688

689

5F0

5F1

5F8

5DD

5E9

Latch Same as Comm Loss: Chilled

Water Flow Switch

Reset
Level

Comm Loss:
Evaporator Rfgt Drain
Valve - Ckt 2

Hex
Code

Persistence

Normal

SeverityDiagnostic Name and

Source

Criteria

Remote

Latch Same as Comm Loss: Chilled

Water Flow Switch

Comm Loss:
Evaporator Rfgt Liquid
Level, Circuit #1

Immediate

Remote

Latch Same as Comm Loss: Chilled

Water Flow Switch

Comm Loss:
Evaporator Rfgt Liquid
Level, Circuit #2

Immediate

Remote

Latch Continual loss of

communication between the
MP and the Functional ID has
occurred for a 30 second
period. Note: This diagnostic is
replaced by diagnostic 5FB
below with Rev 15.0.

Comm Loss:
Evaporator Rfgt
Pressure, Circuit #1

Immediate

Remote

Latch Continual loss of

communication between the
MP and the Functional ID has
occurred for a 30 second
period. Note: This diagnostic is
replaced by diagnostic 5FB
below with Rev 15.0.

Comm Loss:
Evaporator Rfgt
Pressure, Circuit #2

Immediate

Remote

Latch Same as Comm Loss: Chilled

Water Flow Switch

Comm Loss:
Evaporator Water
Pump Control

Normal

Remote

Latch Same as Comm Loss: Chilled

Water Flow Switch

Comm Loss: External
Auto/Stop

Normal

Remote

NonLatch Continual loss of

communication between the
MP and the Functional ID has
occurred for a 30 second
period. Chiller shall discontinue
use of the External Chilled
Water Setpoint source and
revert to the next higher
priority for setpoint arbitration.

Comm Loss: External
Chilled Water Setpoint

Special
Mode

Remote

Diagnostics

5DF

5E0

5EA

680

681

682

683

684

685

686

RLC-SVU01B-E4

32

Diagnostics

Latch Continual loss of

communication between the
MP and the Functional ID has
occurred for a 30 second
period. MP will nonvolatilely
hold the lockout state (enabled
or disabled) that was in effect
at the time of comm loss.

Comm Loss: External
Circuit Lockout,
Circuit #1

Special
Mode

Remote

NonLatch Continual loss of

communication between the
MP and the Functional ID has
occurred for a 30 second
period. Chiller shall discontinue
use of the External Current
limit setpoint and revert to the
next higher priority for Current
Limit setpoint arbitration.

Comm Loss: External
Current Limit
Setpoint

Special
Mode

Remote

Reset
Level

Hex
Code

PersistenceSeverityDiagnostic Name and

Source

Criteria

Latch Same as Comm Loss: Chilled

Water Flow Switch

Comm Loss: Fan
Control Circuit #1,
Stage #1

Normal

Remote

Latch Same as Comm Loss: Chilled

Water Flow Switch

Normal

Remote

Latch Same as Comm Loss: Chilled

Water Flow Switch

Comm Loss: Fan
Control Circuit #1,
Stage #3

Normal

Remote

Latch Same as Comm Loss: Chilled

Water Flow Switch

Normal

Remote

Latch Same as Comm Loss: Chilled

Water Flow Switch

Normal

Remote

Latch Same as Comm Loss: Chilled

Water Flow Switch

Normal

Remote

Latch Same as Comm Loss: Chilled

Water Flow Switch

Normal

Remote

Comm Loss: Fan
Control Circuit #1,
Stage #2

Comm Loss: Fan
Control Circuit #1,
Stage #4

Comm Loss: Fan
Control Circuit #2,
Stage #1

Comm Loss: Fan
Control Circuit #2,
Stage #2

Comm Loss: Fan
Control Circuit #2,
Stage #3

Latch Same as Comm Loss: External

Circuit Lockout, Circuit #1

Comm Loss: External
Circuit Lockout,
Circuit #2

Special
Mode

Remote

687

68C

68D

69A

69B

68A

698

68B

699

5D9

5DA

RLC-SVU01B-E4

33

Diagnostics

Latch Continual loss of

communication between the
MP and the Functional ID has
occurred for a 30 second
period. Operate the remaining
fans as fixed speed fan deck.

Comm Loss: Fan
Inverter Fault, Circuit
#1 or Circuit #1,
Drive 1

Special
Mode

Remote

Reset
Level

Hex
Code

PersistenceSeverityDiagnostic Name and

Source

Criteria

Latch Same as Comm Loss: Fan

Inverter Fault, Circuit #1 or
Circuit #1, Drive 1

Special
Mode

Remote

Comm Loss: Fan
Inverter Fault, Circuit
#1, Drive 2

Latch Same as Comm Loss: Fan

Inverter Fault, Circuit #1 or
Circuit #1, Drive 1

Special
Mode

Remote

Comm Loss: Fan
Inverter Fault, Circuit
#2 or Circuit #2,
Drive 1

Latch Same as Comm Loss: Fan

Inverter Fault, Circuit #1 or
Circuit #1, Drive 1

Special
Mode

Remote

Comm Loss: Fan
Inverter Fault, Circuit
#2, Drive 2

Latch Same as Comm Loss: Fan

Inverter Fault, Circuit #1 or
Circuit #1, Drive 1

Normal

Remote

Comm Loss: Fan
Inverter Fault, Circuit
#1, Drive 1 and 2

Latch Same as Comm Loss: Fan

Inverter Fault, Circuit #1 or
Circuit #1, Drive 1

Normal

Remote

Comm Loss: Fan
Inverter Power,
Circuit #2 or Circuit
#2 Drive 1 and 2

Latch Same as Comm Loss: Fan

Inverter Fault, Circuit #1 or
Circuit #1, Drive 1

Remote

Comm Loss: Fan
Inverter Speed
Command, Circuit #1
or Circuit #1 Drive 1
and 2

Latch Same as Comm Loss: Fan

Inverter Fault, Circuit #1 or
Circuit #1, Drive 1

Special
Mode

Remote

Comm Loss: Fan
Inverter Speed
Command, Circuit #2
or Circuit #2 Drive 1
and 2

Latch Same as Comm Loss: Chilled

Water Flow Switch

Normal

Comm Loss: Female
Step Load
Compressor 1A

Special
Mode

Latch Same as Comm Loss: Chilled

Water Flow Switch

Normal

Remote

Comm Loss: Female
Step Load
Compressor 1B

Remote

Latch Same as Comm Loss: Chilled

Water Flow Switch

Normal

Remote

Comm Loss: Fan
Control Circuit #2,
Stage #4

RLC-SVU01B-E4

34

Diagnostics

5DB

5DC

5EB

5EC

5ED

5EE

5E1

5FA

5F4

5F5

Latch Same as Comm Loss: Chilled

Water Flow Switch

Normal

Remote

Reset
Level

Hex
Code

PersistenceSeverityDiagnostic Name and

Source

Criteria

Comm Loss: Female
Step Load
Compressor 2A

Latch Same as Comm Loss: Chilled

Water Flow Switch

Normal

Remote

Comm Loss: Female
Step Load
Compressor 2B

Latch Same as Comm Loss: Chilled

Water Flow Switch

Immediate

Remote

Comm Loss: High
Pressure Cutout
Switch, Cprsr 1A

Latch Same as Comm Loss: Chilled

Water Flow Switch

Immediate

Remote

Comm Loss: High
Pressure Cutout
Switch, Cprsr 1B

Latch Same as Comm Loss: Chilled

Water Flow Switch

Immediate

Remote

Latch Same as Comm Loss: Chilled

Water Flow Switch

Immediate

Remote

Comm Loss: High
Pressure Cutout
Switch, Cprsr 2A

Comm Loss: Female
Step Load
Compressor 2B

Latch Continual loss of

communication between the
MP and the Functional ID has
occurred for a 30 second
period. Chiller shall revert to
normal (non-ice building) mode
regardless of last state.

Special
Mode

Remote

Comm Loss: Ice­Machine Control

Latch Same as Comm Loss: Ice-

Machine Control

Special
Mode

Remote

Comm Loss: Ice­Machine Control

Latch Same as Comm Loss: Chilled

Water Flow Switch

Immediate

Remote

Comm Loss:
Intermediate Oil
Pressure, Cprsr 1A

Latch Same as Comm Loss: Chilled

Water Flow Switch

Immediate

Remote

Comm Loss:
Intermediate Oil
Pressure, Cprsr 1B

5F6

5F7

69D

5D2

5D4

5D6

5D8

5D1

5D3

5D5

5D7

5E5

RLC-SVU01B-E4

35

Diagnostics

Reset
Level

Hex
Code

PersistenceSeverityDiagnostic Name and

Source

Criteria

Latch Same as Comm Loss: Chilled

Water Flow Switch

Immediate

Remote

Latch Same as Comm Loss: Chilled

Water Flow Switch

Immediate

Remote

Comm Loss:
Intermediate Oil
Pressure, Cprsr 2B

Comm Loss:
Intermediate Oil
Pressure, Cprsr 2A

Latch Same as Comm Loss: Chilled

Water Flow Switch

Special
Mode

Remote

Comm Loss: Local
BAS Interface

Latch Same as Comm Loss: Chilled

Water Flow Switch

Normal

Remote

Comm Loss: Male
Port Load
Compressor 1A

Latch Same as Comm Loss: Chilled

Water Flow Switch

Normal

Remote

Comm Loss: Male
Port Load
Compressor 1B

Latch Same as Comm Loss: Chilled

Water Flow Switch

Normal

Remote

Comm Loss: Male
Port Load
Compressor 2A

Latch Same as Comm Loss: Chilled

Water Flow Switch

Normal

Remote

Comm Loss: Male
Port Load
Compressor 2B

Latch Same as Comm Loss: Chilled

Water Flow Switch

Normal

Remote

Comm Loss: Male
Port Unload
Compressor 1A

Latch Same as Comm Loss: Chilled

Water Flow Switch

Normal

Remote

Comm Loss: Male
Port Unload
Compressor 1B

Latch Same as Comm Loss: Chilled

Water Flow Switch

Normal

Remote

Comm Loss: Male
Port Unload
Compressor 2A

Latch Same as Comm Loss: Chilled

Water Flow Switch

Normal

Remote

Comm Loss: Male
Port Unload
Compressor 2B

Latch Same as Comm Loss: Chilled

Water Flow Switch

Normal

Remote

Comm Loss:
Intermediate Oil
Pressure, Cprsr 2B

5E6

696

697

5E2

690

691

692

693

6AC

6AB

RLC-SVU01B-E4

36

Diagnostics

Reset
Level

Hex
Code

PersistenceSeverityDiagnostic Name and

Source

Criteria

Latch Same as Comm Loss: Chilled

Water Flow Switch

Normal

Remote

Comm Loss: Oil
Temperature, Circuit
#2 or Cprsr 2A

Latch Same as Comm Loss: Chilled

Water Flow Switch

Normal

Remote

Comm Loss: Oil
Temperature,
Cprsr 1B

Latch Same as Comm Loss: Chilled

Water Flow Switch

Normal

Remote

Comm Loss: Oil
Temperature,
Cprsr 2B

Latch Continual loss of

communication between the
MP and the Functional ID has
occurred for a 30 second
period. Note that if this
diagnostic occurs, operational
pumpdown will be performed
regardless of the last valid
temperature.

Normal

Remote

Comm Loss: Outdoor
Air Temperature

Latch

Same as Comm Loss: Chilled
Water Flow Switch

Normal

Local

Comm Loss:
Starter 1A

Latch Same as Comm Loss: Chilled

Water Flow Switch

Normal

Local

Comm Loss:
Starter 1B

Latch Same as Comm Loss: Chilled

Water Flow Switch

Normal

Local

Comm Loss:
Starter 2A

Latch Same as Comm Loss: Chilled

Water Flow Switch

Normal

Local

Comm Loss:
Starter 2B

Latch Same as Comm Loss: Chilled

Water Flow Switch

Info

Local

Comm Loss: Starter
Panel High
Temperature Limit ­Panel 1, Cprsr 1B

Latch Same as Comm Loss: Chilled

Water Flow Switch

Info

Local

Comm Loss: Starter
Panel High
Temperature Limit ­Panel 1, Cprsr 2A

6AD

6A0

5FB

5FC

5FD

5FE

RLC-SVU01B-E4

37

Diagnostics

Reset
Level

Hex
Code

PersistenceSeverityDiagnostic Name and

Source

Criteria

Latch Same as Comm Loss: Chilled

Water Flow Switch

Info

Local

Comm Loss: Starter
Panel High
Temperature Limit ­Panel 2, Cprsr 2B

Latch Same as Comm Loss: Chilled

Water Flow Switch

Info

Remote

Comm Loss: Status/
Annunciation Relays

Latch Continual loss of

communication between the
MP and the Functional ID has
occurred for a 30 second
period. Circuit target if no
isolation valves, compressor
target if isolation valves or
simplex. Design Note: In the
case of manifolded
compressors without isolation
valves, the occurrence of this
diagnostic will also generate a
comm loss with the
nonexistent Suction Press
Cprsr 2B in order to accomplish
circuit shutdown.

Immediate

Remote

Comm Loss: Suction
Pressure Cprsr 1A

Latch Continual loss of

communication between the
MP and the Functional ID has
occurred for a 30 second
period. Design Note: For
circuits with manifolded
compressors w/o isolation
valve option, this diagnostic
will occur with the preceding
diagnostic, even though this
transducer is not required or
installed.

Immediate

Remote

Comm Loss: Suction
Pressure Cprsr 1B

Latch Same as Comm Loss: Chilled

Water Flow Switch

Immediate

Remote

Comm Loss: Suction
Pressure Cprsr 2A

Latch Same as Comm Loss: Chilled

Water Flow Switch

Immediate

Remote

Comm Loss: Suction
Pressure Cprsr 2B

2A1

5B4

2A2

5B5

5B8

5B9

FD

8E

RLC-SVU01B-E4

38

Diagnostics

Reset
Level

Hex
Code

PersistenceSeverityDiagnostic Name and

Source

Criteria

Latch The MP has received a fault

signal from the respective
condenser fan Variable Speed
Inverter Drive, and
unsuccessfully attempted
(5 times within 1 minute of
each other) to clear the fault.
The 4th attempt removes
power from the inverter to
create a power up reset. If the
fault does not clear, the MP will
revert to constant speed
operation without the use of
the inverter's fan. The inverter
must be manually bypassed,
and fan outputs rebound, for
full fixed speed fan operation

Special
Mode

Remote

Condenser Fan
Variable Speed Drive
Fault - Circuit 1
(Drive 1)

Latch Same as Condenser Fan

Variable Speed Drive Fault ­Circuit 1 (Drive 1)

Special
Mode

Remote

Condenser Fan
Variable Speed Drive
Fault - Circuit 1
Drive 2

Latch Same as Condenser Fan

Variable Speed Drive Fault ­Circuit 1 (Drive 1)

Special
Mode

Remote

Condenser Fan
Variable Speed Drive
Fault - Circuit 2
Drive 1

Latch Same as Condenser Fan

Variable Speed Drive Fault ­Circuit 1 (Drive 1)

Special
Mode

Remote

Condenser Fan
Variable Speed Drive
Fault - Circuit 2
Drive 2

Latch Bad Sensor or LLIDImmediate

Remote

Condenser
Refrigerant Pressure
Transducer - Circuit 1

Latch Bad Sensor or LLIDImmediate

Remote

Condenser
Refrigerant Pressure
Transducer - Circuit 2

Latch EMERGENCY STOP input is

open. An external interlock has
tripped. Time to trip from input
opening to unit stop shall be

0.1 to 1.0 seconds.

Immediate

Remote

Emergency Stop

Latch Bad Sensor or LLID a. Normal

operation, no effects on
control. b. Chiller shall remove
any Return or Constant Return
Chilled Water Reset, if it was in
effect. Apply slew rates per
Chilled Water Reset spec

Immediate

Remote

Evaporator Entering
Water Temperature
Sensor

RLC-SVU01B-E4

39

AB

27D

3F9

6B9

6BA

ED

Diagnostics

Reset
Level

Hex
Code

PersistenceSeverityDiagnostic Name and

Source

Criteria

Latch Bad Sensor or LLIDNormal

Remote

Evaporator Leaving
Water Temperature
Sensor

Latch Bad Sensor or LLIDImmediate

Remote

Evaporator Liquid
Level Sensor ­Circuit 1

Latch Bad Sensor or LLIDImmediate

Remote

Evaporator Liquid
Level Sensor ­Circuit 2

Latch This diagnostic is effective only

with Remote Evaporator units.
The liquid level of the
respective evaporator was not
seen to be below the level of-

21.2 mm (0.83 in) within 5
minutes of the commanded
opening of its Drain Valve
Solenoid. The diagnostic will
not be active if the drain valve
is commanded closed.

NA

Remote

Evaporator Rfgt Drain

- Circuit 1

Latch Same as Evaporator Rfgt Drain

- Circuit 1

NA

Remote

Evaporator Rfgt Drain

- Circuit 2

NonLatch a. The chilled water flow switch

input was open for more than
6-10 contiguous seconds.
b. This diagnostic does not de­energize the evaporator pump
output
c. 6-10 seconds of contiguous
flow shall clear this diagnostic.
d. Even though the pump times
out in the STOP modes, this
diagnostic shall not be called
out in the STOP modes. Note
that this diagnostic will not
light the red diagnostic light on
the EasyView display.

Immediate

Remote

Evaporator Water
Flow Lost

RLC-SVU01B-E4

40

ED

384

5C4

Diagnostics

Reset
Level

Hex
Code

PersistenceSeverityDiagnostic Name and

Source

Criteria

NonLatch a. The chilled water flow switch

input was open for more than
6-10 contiguous seconds.
b. This diagnostic does not de­energize the evaporator pump
output
c. 6-10 seconds of contiguous
flow shall clear this diagnostic.
d. Even though the pump times
out in the STOP modes, this
diagnostic shall not be called
out in the STOP modes. Note
that this diagnostic will not
light the red diagnostic light on
the EasyView display.

Immediate

Remote

Evaporator Water
Flow Lost

NonLatch Evaporator water flow was not

proven within 4.25 minutes
(RTAC Rev20 and earlier) or 20
minutes (RTAC Rev 21) of the
Chilled water pump relay being
energized. With SW Rev 17.0
and earlier, the diagnostic will
de-energize the Chilled Water
Pump output. It will be re­energized if the diagnostic
clears with the return of flow
and the chiller will be allowed
to restart normally (to
accommodate external control
of pump) With SW Rev 18.0 and
later, the pump command
status will not be effected. Note
that this diagnostic will not
light the red diagnostic light on
the EasyView display

Normal

Remote

Evaporator Water
Flow Overdue

Latch Loss of comm with 75% or

more of the LLIDs configured
for the system has been
detected. This diagnostic will
suppress the callout of all
subsequent comm loss
diagnostics. Check power
supply(s) and power
disconnects - troubleshoot
LLIDS buss using TechView

Immediate

Remote

Excessive Loss of
Comm

RLC-SVU01B-E4

41

87

89

1C6

1C7

584

5B7

Diagnostics

Reset
Level

Hex
Code

PersistenceSeverityDiagnostic Name and

Source

Criteria

NonLatch a. Function Not "Enabled": no

diagnostics.
b. "Enabled": Out-Of-Range
Low or Hi or bad LLID, set
diagnostic, default CWS to next
level of priority (e.g. Front
Panel SetPoint). This Info
diagnostic will automatically
reset if the input returns to the
normal range.

Info

Remote

External Chilled Water
Setpoint

NonLatch Same as External Chilled Water

Setpoint

Info

Remote

Evaporator Entering
Water Temperature
Sensor

Latch The system differential

pressure for the respective
circuit was above 19.2 bar for 2
consecutive samples or more
than 10 seconds.

Normal

Remote

High Differential
Refrigerant Pressure ­Circuit 1

Latch Same as High Differential

Refrigerant Pressure - Circuit 1

Normal

Remote

High Differential
Refrigerant Pressure ­Circuit 2

Latch The liquid level sensor is seen

to be at or near its high end of
range for 80 contiguous
minutes while the compressor
is running. (The diagnostic
timer will hold, but not clear
when the circuit is off). Design:
80% or more of bit count
corresponding to +21.2 mm or
more liquid level for 80
minutes)

Normal

Remote

High Evaporator
Liquid Level - Circuit 1

Latch Same as High Differential

Refrigerant Pressure - Circuit 1

NormalHigh Evaporator

Liquid Level - Circuit 2

RLC-SVU01B-E4

42

Diagnostics

6B8

1DE

1E0

1DD

1DF

Reset
Level

Hex
Code

PersistenceSeverityDiagnostic Name and

Source

Criteria

NonLatch The evaporator refrigerant

pressure of either circuit has
risen above 13.3 bar. The
evaporator water pump relay
will be de-energized to stop the
pump regardless of why the
pump is running. The
diagnostic will auto reset and
the pump will return to normal
control when all of the
evaporator pressures fall below
13 bar. This diagnostic has
severity of Immediate because
if an evaporator pressure reads
high without being invalid, the
pump would be shut off but the
chiller could keep running.
Evaporator water flow
diagnostics are not active if the
pump is commanded off, only
if the pump is commanded on
but flow does not occur as
expected.

Immediate

Remote

High Evaporator
Refrigerant Pressure

NonLatch The respective oil temperature

as supplied to the compressor,
exceeded 93°C for 2
consecutive samples or for
over 10 seconds. Note: As part
of the Compressor High
Temperature Limit Mode
(Minimum Limit), the running
compressor's female load step
will be forced loaded when its
oil temperature exceeds 88°C
and returned to normal control
when the oil temperature falls
below 77°C.

Remote

High Oil Temperature

- Compressor 1A

Immediate

Latch Same as High Oil Temperature -

Compressor 1A

Immediate

Local

High Oil Temperature

- Compressor 1B

Latch Same as High Oil Temperature -

Compressor 1A

Immediate

Local

High Oil Temperature

- Compressor 2A

Latch Same as High Oil Temperature -

Compressor 1A

Immediate

Local

High Oil Temperature

- Compressor 2B

RLC-SVU01B-E4

43

Diagnostics

F5

F6

BE

BF

5BE

5BF

5C0

5C1

C5

Reset
Level

Hex
Code

PersistenceSeverityDiagnostic Name and

Source

Criteria

Latch A high pressure cutout was

detected on Compressor 1A;
trip at 22 ± 0.35 bar. Note:
Other diagnostics that may
occur as an expected
consequence of the HPC trip
will be suppressed from
annunciation. These include
Phase Loss, Power Loss, and
Transition Complete Input
Open.

Immediate

Local

High Pressure Cutout

- Compressor 1A

Latch Same as High Pressure Cutout -

Compressor 1A

Immediate

Local

High Pressure Cutout

- Compressor 1B

Latch Same as High Pressure Cutout -

Compressor 1A

Immediate

Local

High Oil Temperature

- Compressor 2A

Latch Same as High Pressure Cutout -

Compressor 1A

Immediate

Local

High Oil Temperature

- Compressor 2B

Latch Bad Sensor or LLIDImmediate

Remote

Intermediate Oil
Pressure Transducer ­Compressor 1A

Latch Bad Sensor or LLIDImmediate

Remote

Intermediate Oil
Pressure Transducer ­Compressor 1B

Latch Bad Sensor or LLIDImmediate

Remote

Intermediate Oil
Pressure Transducer ­Compressor 2A

Latch Bad Sensor or LLIDImmediate

Remote

Intermediate Oil
Pressure Transducer ­Compressor 2B

NonLatch The leaving chilled water

temperature fell below the
leaving water temperature
cutout setting for 16.7°C
seconds while the chiller is in
the Stop mode, or in Auto
mode with no compressors
running. Energize Evaporator
Water Pump Relay until
diagnostic auto resets, then
return to normal evaporator
pump control. Automatic reset
occurs when the temperature
rises 2°F (1.1°C) above the
cutout setting for 30 minutes.

Special
Mode

Remote

Low Chilled Water
Temp: Unit Off

RLC-SVU01B-E4

44

Diagnostics

C6

1AE

1AF

583

5B6

Reset
Level

Hex
Code

PersistenceSeverityDiagnostic Name and

Source

Criteria

NonLatch The chilled water temperature

fell below the cutout setpoint
for 16.7°C seconds while the
compressor was running.
Automatic reset occurs when
the temperature rises 2 °F
(1.1°C) above the cutout setting
for 2 minutes. This diagnostic
shall not de-energize the
Evaporator Water Pump
Output.

Immediate
and Special
Mode

Remote

Low Chilled Water
Temp: Unit On

Latch The system differential

pressure for the respective
circuit was below 2.45 bar for
more than 140 bar-sec with
either a 1 minute (single cprsr
circuit) or 2.5 minute
(manifolded cprsr circuit)
ignore time from the start of
the circuit.

Immediate

Remote

Low Differential
Refrigerant Pressure ­Circuit 1

Latch Same as Low Differential

Refrigerant Pressure - Circuit 1

Immediate

Remote

Low Differential
Refrigerant Pressure ­Circuit 2

Latch The liquid level sensor is seen

to be at or near its low end of
range for 80 contiguous
minutes while the compressor
is running. Design: 20% or less
of bit count corresponding to -

21.2 mm or less liquid level for
80 minutes

Immediate

Remote

Low Evaporator
Liquid Level - Circuit 1

Latch Same as Low Evaporator

Liquid Level - Circuit 1

Immediate

Remote

Low Evaporator
Liquid Level - Circuit 2

RLC-SVU01B-E4

45

Diagnostics

194

195

6B3

Latch a. The inferred Saturated

Evaporator Refrigerant
Temperature (calculated from
suction pressure transducer(s))
dropped below the Low
Refrigerant Temperature Cutout
Setpoint for 66.7°C-sec (4.4°C­sec max rate) while the circuit
was running after the ignore
period had expired. The integral
is held at 0 for the ignore time
(which is a function of outdoor
air temperature) following the
circuit startup and the integral
will be limited to never trip in
less than 15 seconds. (i.e. the
error term shall be clamped to -

13.3°C. The minimum LRTC
setpoint is -20.5°C (1.3 bar) the
point at which oil separates
from the refrigerant. b. During
the timeout of the trip integral,
the unload solenoid(s) of the
running compressors on the
circuit, shall be energized
continuously. Normal
load/unload operation will be
resumed if the trip integral is
reset by return to temps above
the cutout setpoint.)

Immediate

Remote

Low Evaporator
Refrigerant
Temperature ­Circuit 1

Reset
Level

Hex
Code

PersistenceSeverityDiagnostic Name and

Source

Criteria

Latch Same as Low Evaporator

Refrigerant Temperature ­Circuit 1

Immediate

Remote

Low Evaporator
Refrigerant
Temperature ­Circuit 2

NonLatch Any of the evaporator

saturated temperatures fell
below the water temperature
cutout setting while the
respective evaporator liquid
level was greater than -21.2mm
for 16.7°C seconds while chiller
is in the Stop mode, or in Auto
mode with no compressors
running. Energize Evaporator
Water Pump Relay until
diagnostic auto resets, then
return to normal evaporator
pump control. Automatic reset
occurs when either the
evaporator temperature rises
2°F (1.1°C) above the cutout
setting or the liquid level falls
below -21.2mm for 30 minutes.

Special
Mode

Remote

Low Evaporator Temp

- Ckt 1: Unit Off

RLC-SVU01B-E4

46

Diagnostics

6B3

198

199

19A

19B

B5

B6

B7

Reset
Level

Hex
Code

PersistenceSeverityDiagnostic Name and

Source

Criteria

NonLatch Same as Low Evaporator Temp

- Ckt 1: Unit Off

Special
Mode

Remote

Low Evaporator Temp

- Ckt 1: Unit Off

Latch The intermediate oil pressure

transducer for this compressor
was out of the acceptable
pressure range for 15 seconds,
while the Delta Pressure was
greater than 2.45 bar:
Acceptable range is 0.50 > (PC­PI) / (PC-PE) for the first 2.5
minutes of operation, and 0.25
> (PC-PI) / (PC- PE) thereafter

Immediate

Local

Low Oil Flow ­Compressor 1A

Latch Same as Low Oil Flow -

Compressor 1A

Immediate

Local

Low Oil Flow ­Compressor 1B

Latch Same as Low Oil Flow -

Compressor 1A

Immediate

Local

Low Oil Flow ­Compressor 2A

Latch Same as Low Oil Flow -

Compressor 1A

Immediate

Local

Low Oil Flow ­Compressor 2B

Latch a. The Suction Refrigerant

Pressure (or either of the
compressor suction pressures)
dropped below 0.7 bar just
prior to compressor start (after
EXV preposition).
b. The pressure fell below 1.12
bar while running after the
ignore time had expired, or fell
below 0.7 bar (or 0.35 bar in
software prior to Oct 02) before
the ignore time had expired.
The ignore time is function of
outdoor air temperature. Note:
Part b. is identical to Low
Evaporator Refrigerant
Temperature diagnostic except
for the trip integral and trip
point settings.

Immediate

Local

Low Suction
Refrigerant Pressure ­Circuit 1

Latch Same as Low Suction

Refrigerant Pressure - Circuit 1

Immediate

Local

Low Suction
Refrigerant Pressure ­Circuit 2

Latch Same as Low Suction

Refrigerant Pressure - Circuit 1

Immediate

Local

Low Suction
Refrigerant Pressure ­Circuit 1B

RLC-SVU01B-E4

47

Diagnostics

B8

BA

BB

BC

BD

1AD

6A1

5FF

6A2

69C

Reset
Level

Hex
Code

PersistenceSeverityDiagnostic Name and

Source

Criteria

Latch Same as Low Suction

Refrigerant Pressure - Circuit 1

Immediate

Local

Low Suction
Refrigerant Pressure ­Circuit 2B

Latch Compressor current exceeded

overload time vs. trip
characteristic. For A/C products
Must trip = 140% RLA, Must
hold=125%, nominal trip132.5%
in 30 seconds.

Immediate

Local

Motor Current
Overload ­Compressor 1A

Latch Same as Low Suction

Refrigerant Pressure - Circuit 1

Immediate

Local

Motor Current
Overload ­Compressor 1B

Latch Same as Low Suction

Refrigerant Pressure - Circuit 1

Immediate

Local

Motor Current
Overload ­Compressor 2A

Latch Same as Low Suction

Refrigerant Pressure - Circuit 1

Immediate

Local

Motor Current
Overload ­Compressor 2B

Latch Memory error criteriaImmediate

Remote

MP Application
Memory CRC Error

Latch MP has determined there was

an error with the previous
power down store. Starts and
Hours may have been lost for
the last 24 hours.

Info

Remote

MP: Could not Store
Starts and Hours

Latch MP has an invalid configuration

based on the current software
installed.

Immediate

Remote

Latch MP has determined there was

an error with a block in the
Non-Volatile memory. Check
settings.

Info

Remote

MP: Non-Volatile
Block Test Error

Latch MP has determined there was

an error in a sector of the Non­Volatile memory and it was
reformatted. Check settings.

Info

Remote

MP: Non-Volatile
Memory Reformat

MP: Invalid
Configuration

RLC-SVU01B-E4

48

Diagnostics

D9

1E1

1E2

5A0

5A1

1E6

1E8

1E5

1E7

A1

Reset
Level

Hex
Code

PersistenceSeverityDiagnostic Name and

Source

Criteria

NonLatch The main processor has

successfully come out of a
reset and built its application. A
reset may have been due to a
power up, installing new
software or configuration. This
diagnostic is immediately and
automatically cleared and thus
can only be seen in the Historic
Diagnostic List in TechView.

Info

Remote

MP: Reset Has
Occurred

Latch The Intermediate Oil Pressure

Transducer for this compressor
is reading a pressure either
above its respective circuit's
Condenser Pressure by 1.05 bar
or more, or below its
respective Suction Pressure 0.7
bar or more for 30 seconds
continuously.

Immediate

Local

Oil Flow Fault ­Compressor 1A

Latch Same as Oil Flow Fault -

Compressor 1A

Immediate

Local

Oil Flow Fault ­Compressor 1b

Latch Same as Oil Flow Fault -

Compressor 1A

Immediate

Local

Oil Flow Fault ­Compressor 2A

Latch Same as Oil Flow Fault -

Compressor 1A

Immediate

Local

Oil Flow Fault ­Compressor 2b

Latch Bad Sensor or LLIDNormal

Remote

Oil Temperature
Sensor - Cprsr 1B

Latch Bad Sensor or LLIDNormal

Remote

Oil Temperature
Sensor - Cprsr 2B

Latch Bad Sensor or LLIDNormal

Remote

Oil Temperature
Sensor - Cprsr 1A

Latch Bad Sensor or LLIDNormal

Remote

Oil Temperature
Sensor - Cprsr 2A

Latch Bad Sensor or LLID. Note that if

this diagnostic occurs,
operational pumpdown will be
performed regardless of the
last valid temperature.

Normal

Remote

Outdoor Air
Temperature Sensor

RLC-SVU01B-E4

49

Diagnostics

D7

19C

19D

19E

19F

184

Reset
Level

Hex
Code

PersistenceSeverityDiagnostic Name and

Source

Criteria

NonLatch a. Line voltage above + 10% of

nominal. [Must hold = + 10 %
of nominal. Must trip = + 15 %
of nominal. Reset differential =
min. of2% and max. of 4%.
Time to trip = minimum of 1
min. and maximum of 5 min.)
Design: Nom. trip: 60 seconds
at greater than 112.5%, + or-

2.5%, Auto Reset at 109% or
less.

Immediate

Remote

Over Voltage

Latch a) No current was sensed on

one or two of the current
transformer inputs while
running or starting (See
Nonlatching Power Loss
Diagnostic for all 3 phases lost
while running). Must hold =
20% RLA. Must trip = 5% RLA.
Time to trip shall be longer
than guaranteed reset on
Starter Module at a minimum,
3 seconds maximum. Actual
design trippoint is 10%. The
actual design trip time is 2.64
seconds. b) If Phase reversal
protection is enabled and
current is not sensed on one or
more current transformer
inputs. Logic will detect and
trip in a maximum of 0.3
second from compressor start.

Immediate

Local

Phase Loss ­Compressor 1A

Latch Same as Phase Loss -

Compressor 1A

Immediate

Local

Phase Loss ­Compressor 1B

Latch Same as Phase Loss -

Compressor 1A

Immediate

Local

Phase Loss ­Compressor 2A

Latch Same as Phase Loss -

Compressor 1A

Immediate

Local

Phase Loss ­Compressor 2B

Latch A phase reversal was detected

on the incoming current. On a
compressor startup the phase
reversal logic must detect and
trip in a maximum of .3 second
from compressor start.

Immediate

Local

Phase Reversal ­Compressor 1A

RLC-SVU01B-E4

50

Diagnostics

185

186

187

1A0

1A1

1A2

Reset
Level

Hex
Code

PersistenceSeverityDiagnostic Name and

Source

Criteria

Latch Same as Phase Reversal -

Compressor 1A

Immediate

Local

Phase Reversal ­Compressor 1B

Latch Same as Phase Reversal -

Compressor 1A

Immediate

Local

Phase Reversal ­Compressor 2A

Latch Same as Phase Reversal -

Compressor 1A

Immediate

Local

Phase Reversal ­Compressor 2B

NonLatch The compressor had previously

established currents while
running and then all 3 phases
of current were lost. Design:
Less than 10% RLA, trip in 2.64
seconds. This diagnostic will
preclude the Phase Loss
Diagnostic and the Transition
Complete Input Opened
Diagnostic from being called
out. To prevent this diagnostic
from occurring with the
intended disconnect of main
power, the minimum time to
trip must be greater than the
guaranteed reset time of the
Starter module. Note: This
diagnostic prevents nuisance
latching diagnostics due to a
momentary power loss. It does
not protect motor/compressor
from uncontrolled power
reapplication. See Momentary
Power Loss Diagnostic for this
protection. This diagnostic is
not active during the start
mode before the transition
complete input is proven. Thus
a random power loss during a
start would result in either a
"Starter Fault Type 3" or a
"Starter Did Not Transition"
latching diagnostic.

Immediate

Remote

Power Loss ­Compressor 1A

NonLatch Same as Power Loss -

Compressor 1A

Immediate

Remote

Power Loss ­Compressor 1B

NonLatch Same as Power Loss -

Compressor 1A

Immediate

Remote

Power Loss ­Compressor 12A

RLC-SVU01B-E4

51

Diagnostics

1A3

8C

8D

1B2

1B3

1B4

1B5

5CD

6A7

5CE

6A8

Reset
Level

Hex
Code

PersistenceSeverityDiagnostic Name and

Source

Criteria

NonLatch Same as Power Loss -

Compressor 1A

Immediate

Remote

Power Loss ­Compressor 2B

NonLatch The pumpdown cycle for this

circuit was terminated
abnormally due to excessive
time or due to a specific set of
diagnostic criteria - but without
associated latching diagnostics.

Info

Remote

Pumpdown
Terminated - Circuit 1

NonLatch Same as Pumpdown

Terminated - Circuit 1

Info

Remote

Pumpdown
Terminated - Circuit 2

Latch A 30% Current Imbalance has

been detected on one phase
relative to the average of all 3
phases for 90 continuous
seconds.

Immediate

Local

Severe Current
Imbalance ­Compressor 1A

Latch Same as Severe Current

Imbalance - Compressor 1A

Immediate

Local

Severe Current
Imbalance ­Compressor 1B

Latch Same as Severe Current

Imbalance - Compressor 1A

Immediate

Local

Severe Current
Imbalance ­Compressor 2A

Latch Same as Severe Current

Imbalance - Compressor 1A

Immediate

Local

Severe Current
Imbalance ­Compressor 2B

Latch Starter has had a loss of

communication with the MP for
a 15 second period.

Immediate

Local

Starter 1A Comm
Loss: MP

Latch While in the Starter Dry Run

Mode either 50% Line Voltage
was sensed at the Potential
Transformers or 10% RLA
Current was sensed at the
Current Transformers.

Immediate

Local

Starter 1A Dry Run
Test

Latch Starter has had a loss of

communication with the MP for
a 15 second period.

Immediate

Local

Starter 1B Comm
Loss: MP

Latch While in the Starter Dry Run

Mode either 50% Line Voltage
was sensed at the Potential
Transformers or10 % RLA
Current was sensed at the
Current Transformers.

Immediate

Local

Starter 1B Dry Run
Test

RLC-SVU01B-E4

52

Diagnostics

5CF

6A9

5D0

6AA

CC

CA

CB

Reset
Level

Hex
Code

PersistenceSeverityDiagnostic Name and

Source

Criteria

Latch Starter has had a loss of

communication with the MP for
a 15 second period.

Immediate

Local

Starter 2A Comm
Loss: MP

Latch While in the Starter Dry Run

Mode either 50% Line Voltage
was sensed at the Potential
Transformers or 10% RLA
Current was sensed at the
Current Transformers.

Immediate

Local

Starter 2A Dry Run
Test

Latch Starter has had a loss of

communication with the MP for
a 15 second period.

Immediate

Local

Starter 2B Comm
Loss: MP

Latch While in the Starter Dry Run

Mode either 50% Line Voltage
was sensed at the Potential
Transformers or 10% RLA
Current was sensed at the
Current Transformers.

Immediate

Local

Starter 2B Dry Run
Test

NonLatch Detected compressor currents

greater than 10% RLA on any or
all phases when the
compressor was commanded
off. Detection time shall be 5
second minimum and 10
seconds maximum. On
detection and until the
controller is manually reset:
generate diagnostic, energize
the appropriate alarm relay,
continue to energize the
Evaporator Pump Output,
continue to command the
affected compressor off, fully
unload the effected compressor
and command a normal stop to
all other compressors. For as
long as current continues,
perform liquid level and fan
control on the circuit effected.

Special
Mode

Remote

Starter Contactor
Interrupt Failure ­Compressor 2A

NonLatch Same as Starter Contactor

Interrupt Failure - Compressor
2A

Special
Mode

Remote

Starter Contactor
Interrupt Failure ­Compressor 1A

NonLatch Same as Starter Contactor

Interrupt Failure - Compressor
2A

Special
Mode

Remote

Starter Contactor
Interrupt Failure ­Compressor 1B

RLC-SVU01B-E4

53

Diagnostics

CD

180

181

182

183

6A3

6A4

6A5

6A6

Reset
Level

Hex
Code

PersistenceSeverityDiagnostic Name and

Source

Criteria

NonLatch Same as Starter Contactor

Interrupt Failure - Compressor
2A

Special
Mode

Remote

Starter Contactor
Interrupt Failure ­Compressor 2B

Latch The Starter Module did not

receive a transition complete
signal in the designated time
from its command to transition.
The must hold time from the
Starter Module transition
command is 1 second. The
Must trip time from the
transition command is 6
seconds. Actual design is 2.5
seconds. This diagnostic is
active only for Y-Delta, Auto­Transformer, Primary Reactor,
and X-Line Starters.

Immediate

Local

Starter Did Not
Transition ­Compressor 1A

Latch Same as Starter Did Not

Transition - Compressor 1A

Immediate

Local

Starter Did Not
Transition ­Compressor 1B

Latch Same as Starter Did Not

Transition - Compressor 1A

Immediate

Local

Starter Did Not
Transition ­Compressor 2A

Latch Same as Starter Did Not

Transition - Compressor 1A

Immediate

Local

Starter Did Not
Transition ­Compressor 2B

Latch Starter failed to arm or start

within the allotted time
(15 seconds).

Info

Local

Starter Failed to
Arm/Start - Cprsr 1A

Latch Same as Starter Failed to

Arm/Start - Cprsr 1A

Info

Local

Starter Failed to
Arm/Start - Cprsr 1B

Latch Same as Starter Failed to

Arm/Start - Cprsr 1A

Info

Local

Starter Failed to
Arm/Start - Cprsr 2A

Latch Same as Starter Failed to

Arm/Start - Cprsr 1A

Info

Local

Starter Failed to
Arm/Start - Cprsr 2B

RLC-SVU01B-E4

54

Diagnostics

1E9

1EA

1EB

1EC

1ED

1EE

1EF

1F0

Reset
Level

Hex
Code

PersistenceSeverityDiagnostic Name and

Source

Criteria

Latch This is a specific starter test

where 1M(1K1) is closed first
and a check is made to ensure
that there are no currents
detected by the CT's. If currents
are detected when only 1M is
closed first at start, then one of
the other contactors is shorted.

Immediate

Local

Starter Fault Type I ­Compressor 1A

Latch Same as Starter Fault Type I -

Compressor 1A

Immediate

Local

Starter Fault Type I ­Compressor 1B

Latch Same as Starter Fault Type I -

Compressor 1A

Immediate

Local

Starter Fault Type I ­Compressor 2A

Latch Same as Starter Fault Type I -

Compressor 1A

Immediate

Local

Starter Fault Type I ­Compressor 2B

Latch This is a specific starter test

where the Shorting Contactor
(1K3) is individually energized
and a check is made to ensure
that there are no currents
detected by the CT's. If current
is detected when only S is
energized at Start, then 1M is
shorted. b. This test in a. above
applies to all forms of starters
(Note: It is understood that
many starters do not connect
to the Shorting Contactor.).

Immediate

Local

Latch Same as Starter Fault Type II -

Compressor 1A

Immediate

Local

Starter Fault Type II ­Compressor 1B

Latch Same as Starter Fault Type II -

Compressor 1A

Immediate

Local

Starter Fault Type II ­Compressor 2A

Latch Same as Starter Fault Type II -

Compressor 1A

Immediate

Local

Starter Fault Type II ­Compressor 2B

Starter Fault Type II ­Compressor 1A

RLC-SVU01B-E4

55

Diagnostics

1F1

1F2

1F3

1F4

5C7

5C8

5C5

5C6

5C9

5CA

Reset
Level

Hex
Code

PersistenceSeverityDiagnostic Name and

Source

Criteria

Latch As part of the normal start

sequence to apply power to the
compressor, the Shorting
Contactor (1K3) and then the
Main Contactor (1K1) were
energized. 1.6 seconds later
there were no currents
detected by the CT's for the last

1.2 Seconds on all 3 phases.
The test above applies to all
forms of starters except
Adaptive Frequency Drives.

Immediate

Local

Latch Same as Starter Fault Type III -

Compressor 1A

Immediate

Local

Starter Fault Type III ­Compressor 1B

Latch Same as Starter Fault Type III -

Compressor 1A

Immediate

Local

Starter Fault Type III ­Compressor 2A

Latch Same as Starter Fault Type III -

Compressor 1A

Immediate

Local

Starter Fault Type III ­Compressor 2B

Starter Fault Type III ­Compressor 1A

Latch Checksum on RAM copy of the

Starter LLID configuration
failed

Info

Local

Starter Module
Memory Error Type 1 ­Starter 2A

Latch Same as Starter Module

Memory Error Type 1 ­Starter 2A

Info

Local

Starter Module
Memory Error Type 1 ­Starter 2B

Latch Same as Starter Module

Memory Error Type 1 ­Starter 2A

Info

Local

Starter Module
Memory Error Type 1 ­Starter 1A

Latch Same as Starter Module

Memory Error Type 1 ­Starter 2A

Info

Local

Starter Module
Memory Error Type 1 ­Starter 1B

Latch Same as Starter Module

Memory Error Type 1 ­Starter 2A

Immediate

Local

Starter Module
Memory Error Type 2 ­Starter 1A

Latch Same as Starter Module

Memory Error Type 1 ­Starter 2A

Immediate

Local

Starter Module
Memory Error Type 2 ­Starter 1B

RLC-SVU01B-E4

56

Diagnostics

5CB

5CC

6B1

6B0

6B2

5BA

5BB

5BC

Reset
Level

Hex
Code

PersistenceSeverityDiagnostic Name and

Source

Criteria

Latch Same as Starter Module

Memory Error Type 1 ­Starter 2A

Immediate

Local

Starter Module
Memory Error Type 2 ­Starter 2A

Latch Same as Starter Module

Memory Error Type 1 ­Starter 2A

Immediate

Local

Starter Module
Memory Error Type 2 ­Starter 2B

NonLatch Starter Panel High Limit

Thermostat (77°C) trip was
detected. Note: Other
diagnostics that may occur as
an expected consequence of
the Panel High Temperature
Limit trip will be suppressed
from annunciation. These
include Phase Loss, Power
Loss, and Transition Complete
Input Open for Cprsr 1B

Special
Mode

Local

Starter Panel High
Temperature Limit ­Panel 1, Cprsr 1B

NonLatch Same as Starter Panel High

Temperature Limit - Panel 1,
Cprsr 1B

Special
Mode

Local

Starter Panel High
Temperature Limit ­Panel 1, Cprsr 2A

NonLatch Same as Starter Panel High

Temperature Limit - Panel 1,
Cprsr 1B

Special
Mode

Local

Starter Panel High
Temperature Limit ­Panel 1, Cprsr 2B

Latch Bad Sensor or LLID Circuit

target if no isolation valves,
compressor target if isolation
valves. Design Note: In the
case of manifolded
compressors w/o isolation
valves, the occurrence of this
diagnostic will also generate a
comm loss with the
nonexistent Suction Press
Cprsr1B in order to accomplish
circuit shutdown.

Immediate

Remote

Suction Refrigerant
Pressure Transducer ­Circuit 1,
Compressor 1A

Latch Same as Suction Refrigerant

Pressure Transducer - Circuit 1,
Compressor 1A

Immediate

Remote

Suction Refrigerant
Pressure Transducer ­Circuit 1,
Compressor 1b

Latch Same as Suction Refrigerant

Pressure Transducer - Circuit 1,
Compressor 1A

Immediate

Remote

Suction Refrigerant
Pressure Transducer ­Circuit 1,
Compressor 2A

RLC-SVU01B-E4

57

Diagnostics

5BD

5B0

5B1

5B2

5B3

5AC

5AD

5AE

5AF

Reset
Level

Hex
Code

PersistenceSeverityDiagnostic Name and

Source

Criteria

Latch Same as Suction Refrigerant

Pressure Transducer - Circuit 1,
Compressor 1A

Immediate

Remote

Suction Refrigerant
Pressure Transducer ­Circuit 1,
Compressor 2b

Latch The Transition Complete input

was found to be opened with
the compressor motor running
after a successful completion of
transition. This is active only for
Y-Delta, Auto-Transformer,
Primary Reactor, and X-Line
Starters. To prevent this
diagnostic from occurring as
the result of a power loss to the
contactors, the minimum time
to trip must be greater than the
trip time for the power loss
diagnostic.

Immediate

Local

Transition Complete
Input Opened ­Compressor 1A

Latch Same as Transition Complete

Input Opened - Compressor 1A

Immediate

Local

Transition Complete
Input Opened ­Compressor 1B

Latch Same as Transition Complete

Input Opened - Compressor 1A

Immediate

Local

Transition Complete
Input Opened ­Compressor 2A

Latch Same as Transition Complete

Input Opened - Compressor 1A

Immediate

Local

Transition Complete
Input Opened ­Compressor 2B

Latch The Transition Complete input

was found to be shorted before
the compressor was started.
This is active for all
electromechanical starters.

Immediate

Local

Transition Complete
Input Shorted ­Compressor 1A

Latch Same as Transition Complete

Input Opened - Compressor 2B

Immediate

Local

Transition Complete
Input Shorted ­Compressor 1B

Latch Same as Transition Complete

Input Opened - Compressor 2B

Immediate

Local

Transition Complete
Input Shorted ­Compressor 2A

Latch Same as Transition Complete

Input Opened - Compressor 2B

Immediate

Local

Transition Complete
Input Shorted ­Compressor 2B

RLC-SVU01B-E4

58

Diagnostics

D8

771

772

Reset
Level

Hex
Code

PersistenceSeverityDiagnostic Name and

Source

Criteria

NonLatch a. Line voltage below - 10% of

nominal or the
Under/Overvoltage transformer
is not connected. [Must hold = ­10% of nominal. Must trip = ­15 % of nominal. Reset
differential = min. of 2% and
max. of 4%. Time to trip = min.
of 1 min. and max. of 5 min.)
Design: Nom. trip: 60 seconds
at less than 87.5%, + or - 2.8%
at 200V or + or - 1.8% at 575V,
Auto Reset at 90% or greater.

Normal

Remote

Under Voltage

Latch The evaporator pressure

dropped below 0.7 bar (or 0.35
bar in software prior to Oct '02)
regardless of whether or not
compressors are running on
that circuit. This diagnostic was
created to prevent compressor
failures due to crossbinding by
forcing an entire chiller
shutdown. If a given
compressor or circuit is locked
out, the suction pressure
transducer(s) associated with it,
will be excluded from causing
this diagnostic.

Immediate

Local

Transition Complete
Input Shorted ­Compressor 1B

Latch Same as Very Low Evaporator

Refrigerant Pressure - Circuit 1

Immediate

Local

Very Low Evaporator
Refrigerant Pressure ­Circuit 2

Maintenance Contract

It is strongly recommended that you
sign a maintenance contract with
your local Service Agency. This
contract provides regular
maintenance of your installation by a
specialist in our equipment. Regular
maintenance helps ensure that any
malfunction is detected and
corrected quickly and minimizes the
possibility that serious damage will
occur. Finally, regular maintenance
helps ensure the maximum
operating life of your equipment. We
would remind you that failure to
respect these installation and
maintenance instructions may result
in immediate cancellation of the
warranty.

Training

The equipment described in this
manual is the result of many years of
research and continuous
development. To assist you in
obtaining the best use of it, and
maintaining it in perfect operating
condition over a long period of time,
the constructor has at your disposal
a refrigeration and air conditioning
service school. The principal aim of
this is to give operators and
maintenance technicians a better
knowledge of the equipment they
are using, or that is under their
charge. Emphasis is particularly
given to the importance of periodic
checks on the unit operating
parameters as well as on preventive
maintenance, which reduces the cost
of owning the unit by avoiding
serious and costly breakdowns.

Maintenance Contract
and Training

RLC-SVU01B-E4

59

www.trane.com

For more information contact your local
district office or e-mail us at [e-mail]

Literature Order Number
Date
Supersedes
Stocking Location

RLC-SVU01B-E4
0606
RLC-SVU01B-E4_0104
Europe

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.

American Standard Europe BVBA
Registered Office: 1789 Chaussée de Wavre, 1160 Brussels - Belgium