Tracer™ TD7 with UC 800

As you review this manual, keep in mind that: • All ﬁ eld-installed wiring must conform to European guidelines and any applicable local codes. Be sure to satisfy proper equipment grounding requirements per European guidelines. • Compressor motor and unit electrical data (including motor kW, voltage utilization range, rated load amps) is ...

Tracer™ TD7 with UC 800 - Trane

As you review this manual, keep in mind that: • All field-installed wiring must conform to ... This condition requires manual reset at the chiller switch on.

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RLC-SVU006B-GB-0720

TracerTM TD7 with UC 800
for RTHD chillers

July 2020

RLC-SVU006B-GB
Confidential and proprietaryTrane information Original instructions

Table of Contents
Installation Electrical ......................................................................................... 4 General Recommendations ..................................................................... 4 Units with Nitrogen Charge Option ........................................................ 5 Installer-Supplied Components............................................................... 5 Control Power Supply .............................................................................. 6 Interconnecting Wiring............................................................................. 8 Programmable Relays.............................................................................. 8 Relay Assignments UsingTracerTMTU .................................................. 10 Low Voltage Wiring................................................................................. 10 Ice Building Option................................................................................. 11 External Chilled Water Setpoint (ECWS) Option .................................. 11 External Demand Limit Setpoint (EDLS) Option.................................. 12 EDLS and ECWS Analog Input Signal Wiring Details.......................... 12 Chilled Water Reset (CWR)..................................................................... 13 Communications Interface .................................................................... 14
Controls ............................................................................................................ 15 Overview ................................................................................................. 15 UC800 Specifications ............................................................................. 15 TracerTD7 Operator Interface................................................................ 18 TracerTMTU.............................................................................................. 18
Diagnostics....................................................................................................... 20 Starter Diagnostics ................................................................................. 21 Main Processor Diagnostics .................................................................. 24 Communication Diagnostics ................................................................. 30 Operator Display Diagnostics and Messages ...................................... 33
Notes................................................................................................................. 34

RLC-SVU006B-GB

Copyright
All rights reserved This document and the information in it are the property of Trane and may not be used or reproduced in whole or in part, without the written permission of Trane. Trane reserves the right to revise this publication at any time and to make changes to its content without obligation to notify any person of such revision or change.
Trademarks
TD7, RTHD Trane, the Trane logo, and Tracer are trademarks of Trane. All trademarks referenced in this document are the trademarks of their respective owners.

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Installation Electrical
General Recommendations
As you review this manual, keep in mind that: · All field-installed wiring must conform to European guidelines and any applicable local codes. Be sure to satisfy
proper equipment grounding requirements per European guidelines. · Compressor motor and unit electrical data (including motor kW, voltage utilization range, rated load amps) is listed
on the chiller nameplate. · All field-installed wiring must be checked for proper terminations, and for possible shorts or grounds. Note: Always refer to wiring diagrams shipped with chiller or unit submittal for specific electrical schematic and
connection information.
WARNING Proper Field Wiring and Grounding Required! All field wiring MUST be performed by qualified personnel. Improperly installed and grounded field wiring poses FIRE and ELECTROCUTION hazards. To avoid these hazards, you MUST follow requirements for field wiring installation and grounding as described in local electrical codes. Failure to follow code could result in death or serious injury.
WARNING Hazardous Voltage w/Capacitors! Disconnect all electric power, including remote disconnects and discharge all motor start/run and AFD (Adaptive FrequencyTM Drive) capacitors before servicing. Follow proper lockout/tagout procedures to ensure the power cannot be inadvertently energized. · For variable frequency drives or other energy storing components provided by Trane or others, refer to the
appropriate manufacturer's literature for allowable waiting periods for discharge of capacitors. Verify with an appropriate voltmeter that all capacitors have discharged. · DC bus capacitors retain hazardous voltages after input power has been disconnected. Follow proper lockout/ tagout procedures to ensure the power cannot be inadvertently energized. After disconnecting input power, wait five (5) minutes for the DC capacitors to discharge, then check the voltage with a voltmeter. Make sure DC bus capacitors are discharged (0 VDC) before touching any internal components. Failure to follow these instructions could result in death or serious injury. For additional information regarding the safe discharge of capacitors, see "Adaptive FrequencyTM Drive (AFD3) Capacitor Discharge," p. 28 and PROD-SVB06A-EN. WARNING Hazardous Voltage - Pressurized Burning Fluid! Before removing compressor terminal box cover for servicing, or servicing power side of control panel, CLOSE COMPRESSOR DISCHARGE SERVICE VALVE and disconnect all electric power including remote disconnects. Discharge all motor start/run capacitors. Follow lockout/tagout procedures to ensure the power cannot be inadvertently energized. Verify with an appropriate voltmeter that all capacitors have discharged. The compressor contains hot, pressurized refrigerant. Motor terminals act as a seal against this refrigerant. Care should be taken when servicing NOT to damage or loosen motor terminals. Do not operate compressor without terminal box cover in place. Failure to follow all electrical safety precautions could result in death or serious injury. For additional information regarding the safe discharge of capacitors, see "Adaptive FrequencyTM Drive (AFD3) Capacitor Discharge," p. 28 and PROD-SVB06A-EN.
NOTICE: Use Copper Conductors Only! Unit terminals are not designed to accept other types of conductors. Failure to use copper conductors could result in equipment damage.
Important: To prevent control malfunctions, do not run low voltage wiring (<30 V) in conduit with conductors carrying more than 30 volts.

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Installation Electrical

In case of drive servicing only
WARNING
DISCHARGE TIME!
Frequency converters contain DC-link capacitors that can remain charged even when the frequency converter is not powered. To avoid electrical hazards, disconnect AC mains, any permanent magnet type motors, and any remote DClink power supplies, including battery backups, UPS and DC-link connections to other frequency converters. Wait for the capacitors to fully discharge before performing any service or repair work. The amount of wait time is listed in the Discharge Time table. Failure to wait the specified time after power has been removed before doing service or repair could result in death or serious injury.

Table 1 Capacitor Discharge Times

Voltage

Power

Minimum waiting time [min]

380-500 V

90-250 kW

315-800 kW

Units with Nitrogen Charge Option
For units with nitrogen charge option (model number digit 15 = 2), the unit must NOT have shore power, or unit power applied until the unit has been charged. Applying power will drive EXV valves closed, and will inhibit sufficient vac for unit charging.

Installer-Supplied Components
Customer wiring interface connections are shown in the electrical schematics and connection diagrams that are shipped with the unit. The installer must provide the following components if not ordered with the unit:
· Power supply wiring (in conduit) for all field-wired connections. · All control (interconnecting) wiring (in conduit) for field supplied devices. · Fused-disconnect switches or circuit breakers.
Power Supply Wiring
WARNING
Proper Field Wiring and Grounding Required!
All field wiring MUST be performed by qualified personnel. Improperly installed and grounded field wiring poses FIRE and ELECTROCUTION hazards. To avoid these hazards, you MUST follow requirements for field wiring installation and grounding as described in your local electrical codes. Failure to follow code could result in death or serious injury.
All power supply wiring must be sized and selected accordingly by the project engineer in accordance with EN 60204.
All wiring must comply with local codes. The installing (or electrical) contractor must provide and install the system interconnecting wiring, as well as the power supply wiring. It must be properly sized and equipped with the appropriate fused disconnect switches.
The type and installation location(s) of the fused disconnects must comply with all applicable codes.

NOTICE: Use Copper Conductors Only! Unit terminals are not designed to accept other types of conductors. Failure to use copper conductors could result in equipment damage.

Cut holes into the sides of the control panel for the appropriately-sized power wiring conduits. The wiring is passed through these conduits and connected to the terminal blocks, optional unit-mounted disconnects, or HACR type breakers.
The high voltage field-provided connections are made through patch plate on the right side of the panel.The low voltage connections are made through knockouts provided on the left side of the panel. Additional grounds may be required for each 115 volt power supply to the unit. Green lugs are provided for 115V customer wiring.

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Installation Electrical

Control Power Supply
The unit is equipped with a control power transformer. It is not necessary to provide additional control power voltage to the unit. No other loads should be connected to the control power transformer. All units are factory-connected for appropriate labeled voltages. Motor Cable The motor must be connected to terminals U/T1/96, V/T2/97, W/T3/98. Earth (ground) to terminal 99. All types of three-phase asynchronous standard motors can be used with a frequency converter unit. The factory setting is for clockwise rotation with the frequency converter output connected as follows:

Table 2
Terminal no. 96, 97, 98, 99

Function
Mains U/T1, V/T2, W/T3 Earth (ground)

Motor Rotation Check
The direction of rotation can be changed by switching two phases in the motor cable or by changing the setting of 4-10 Motor Speed Direction.

Table 3
· Terminal U/T1/96 connected to U-phase
· Terminal V/T2/97 connected to V-phase
· Terminal W/T3/98 connected to W-phase

A motor rotation check can be performed using1-28 Motor Rotation Check and following the steps shown in the display.

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Installation Electrical
AC Mains Connection · Size wiring is based upon the input current of the frequency converter · Comply with local and national electrical codes for cable sizes · Connect 3-phase AC input power wiring to terminals L1, L2, and L3 (see Figure 1)
Figure 1 Connecting to AC Mains

Table 4
1 2

Mains connection Motor connection

· Earth (ground) the cable in accordance with the instructions provided · All frequency converters may be used with an isolated input source as well as with earth (ground) reference power
lines. When supplied from an isolated mains source (IT mains or floating delta) orTT/TN-S mains with a grounded leg (grounded delta), set 14-50 RFI Filter to OFF. When off, the internal RFI filter capacitors between the chassis and the intermediate circuit are isolated to avoid damage to the intermediate circuit and to reduce earth (ground) capacity currents in accordance with IEC 61800-3.

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Installation Electrical

Interconnecting Wiring
Chilled Water Pump Control

NOTICE:
Equipment Damage!
If the microprocessor calls for a pump to start and water does not flow, the evaporator may be damaged catastrophically. It is the responsibility of the installing contractor and/or the customer to ensure that a pump will always be running when called upon by the chiller controls.

An evaporator water pump output relay closes when the chiller is given a signal to go into the Auto mode of operation from any source. The contact is opened to turn off the pump in the event of most machine level diagnostics to prevent the build up of pump heat.
The relay output is required to operate the Evaporator Water Pump (EWP) contactor. Contacts should be compatible with 115/240 VAC control circuit. Normally, the EWP relay follows the AUTO mode of the chiller. Whenever the chiller has no diagnostics and is in the AUTO mode, regardless of where the auto command is coming from, the normally open relay is energized. When the chiller exits the AUTO mode, the relay is timed to open in an adjustable (using TU) 0 to 30 minutes. The non-AUTO modes in which the pump is stopped, include Reset, Stop, External Stop, Remote Display Stop, Stopped by Tracer, Start Inhibited by Low Ambient Temp, and Ice Building complete.

Table 5 Pump Relay Operation

Chiller Mode

Relay Operation

Auto Ice Building Tracer Override Stop Ice Complete Diagnostics

Instant close Instant close Close Timed Open Instant Open Instant Open

When going from Stop to Auto, the EWP relay is energized immediately. If evaporator water flow is not established in 20 minutes (for normal transition) or 4 minutes, 15 seconds (for pump commanded ON due to an override safety), the UC800 de-energizes the EWP relay and generates a non-latching diagnostic. If flow returns (e.g. someone else is controlling the pump), the diagnostic is cleared, the EWP is re-energized, and normal control resumed.
If evaporator water flow is lost once it had been established, the EWP relay remains energized and a non-latching diagnostic is generated. If flow returns, the diagnostic is cleared and the chiller returns to normal operation.
In general, when there is either a non-latching or latching diagnostic, the EWP relay is turned off as though there was a zero time delay. Exceptions whereby the relay continues to be energized occur with:
· Low Chilled Water Temp. diagnostic (non-latching) (unless also accompanied by an Evap Leaving Water Temperature Sensor Diagnostic)
or
· Loss of Evaporator Water Flow diagnostic (non-latching) and the unit is in the AUTO mode, after initially having proven evaporator water flow.
Programmable Relays
A programmable relay concept provides for enunciation of certain events or states of the chiller, selected from a list of likely needs, while only using four physical output relays, as shown in the field wiring diagram.The four relays are provided (generally with a Quad Relay Output LLID) as part of the Programmable Relay Option. The relay's contacts are isolated Form C (SPDT), suitable for use with 120 VAC circuits drawing up to 2.8 amps inductive, 7.2 amps resistive, or 1/3 HP and for 240 VAC circuits drawing up to 0.5 amp resistive.
The list of events/states that can be assigned to the programmable relays can be found in Table 6. The relay will be energized when the event/state occurs.

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Table 6 Chiller events/status descriptions

Event/State

Description

Alarm - Latching Alarm - Auto Reset Alarm Warning Chiller Limit Mode
Compressor Running Chiller Head Pressure Relief Request Relay

This output is true whenever there is any active diagnostic that requires a manual reset to clear, that effects the Chiller, the Circuit, or any of the Compressors on a circuit. This classification does not include informational diagnostics.
This output is true whenever there is any active diagnostic that could automatically clear, that effects the Chiller, the Circuit, or any of the Compressors on a circuit. This classification does not include informational diagnostics. If all of the auto resetting diagnostics were to clear, this output would return to a false condition.
This output is true whenever there is any diagnostic effecting any component, whether latching or automatically clearing. This classification does not include informational diagnostics.
This output is true whenever there is any informational diagnostic effecting any component, whether latching or automatically clearing.
This output is true whenever the chiller has been running in one of the Unloading types of limit modes (Condenser, Evaporator, Current Limit or Phase Imbalance Limit) continuously for the last 20 minutes. A given limit or overlapping of different limits must be in effect continuously for 20 minutes prior to the output becoming true. It will become false, if no Unload limits are present for 1 minute. The filter prevents short duration or transient repetitive limits from indicating. The chiller is considered to be in a limit mode for the purposes of front panel display and annunciation, only if it is fully inhibiting loading by virtue of being in either the "hold" or "forced unload" regions of the limit control, excluding the "limited loading region". (In previous designs, the "limit load" region of the limit control was included in the criteria for the limit mode call out on the front panel and annunciation outputs)
The output is true whenever any compressors are started or running on the chiller and false when no compressors are either starting or running on the chiller. This status may or may not reflect the true status of the compressor in Service Pumpdown if such a mode exists for a particular chiller.
This relay output is energized anytime the chiller is running in one of the following modes; Ice Making Mode or Condenser Pressure Limit Control Mode continuously for the duration specified by the Chiller Head Relief Relay Filter Time. The Chiller Head Relief Relay Filter Time is a service setpoint. The relay output is de-energized anytime the chiller exits all above modes continuously for the duration specified by the same Chiller Head Relief Relay Filter Time.

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Relay Assignments Using TracerTM TU
TracerTM TU Service Tool is used to install the Programmable Relay Option package and assign any of the above list of events or status to each of the four relays provided with the option. (See "TracerTM TU," for more information on the Tracer TU service tool.) The relays to be programmed are referred to by the relay's terminal numbers on the LLID board 1A10. The default assignments for the four available relays of the Programmable Relay option are: Table 7 Default assignments

Relay

Relay 0Terminals J2-1,2,3: Relay 1Terminals J2-4,5,6: Relay 2Terminals J2 - 7,8,9: Relay 3Terminals J2 -10,11,12:

Head press. Limit mode Alarm CMP Running Relay

If any of the Alarm/Status relays are used, provide electrical power, 115 VAC with fused-disconnect to the panel and wire through the appropriate relays (terminals on 1A10). Provide wiring (switched hot, neutral, and ground connections) to the remote annunciation devices. Do not use power from the chiller's control panel transformer to power these remote devices. Refer to the field diagrams which are shipped with the unit.
Low Voltage Wiring
The remote devices described below require low voltage wiring. All wiring to and from these remote input devices to the Control Panel must be made with shielded, twisted pair conductors. Be sure to ground the shielding only at the panel.
Important: To prevent control malfunctions, do not run low voltage wiring (<30 V) in conduit with conductors carrying more than 30 volts.
Emergency Stop
UC800 provides auxiliary control for a customer specified/installed latching trip out. When this customer-furnished remote contact 5K22 is provided, the chiller will run normally when the contact is closed. When the contact opens, the unit will trip on a manually resettable diagnostic. This condition requires manual reset at the chiller switch on the front of the control panel.
Connect low voltage leads to terminal strip locations 1A12. Refer to the field diagrams that are shipped with the unit.
Silver or gold-plated contacts are recommended. These customer-furnished contacts must be compatible with 24 VDC, 12 mA resistive load.
External Auto/Stop
If the unit requires the external Auto/Stop function, the installer must provide leads from the remote contacts 5K21 to the proper terminals of the LLID 1A12 on the control panel.
The chiller will run normally when the contacts are closed. When either contact opens, the compressor(s), if operating, will go to the RUN:UNLOAD operating mode and cycle off. Unit operation will be inhibited. Closure of the contacts will permit the unit to return to normal operation.
Field-supplied contacts for all low voltage connections must be compatible with dry circuit 24 VDC for a 12 mA resistive load. Refer to the field diagrams that are shipped with the unit.

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These customer-supplied contact closures must be compatible with 24 VDC, 12 mA resistive load. Silver or gold plated contacts are recommended.
Ice Building Option
UC800 provides auxiliary control for a customer specified/installed correct with contact closure 5K20 for ice building if so configured and enabled.This output is known as the Ice Building Status Relay.The normally open contact will be closed when ice building is in progress and open when ice building has been normally terminated either through Ice Termination setpoint being reached or removal of the Ice Building command. This output is for use with the ice storage system equipment or controls (provided by others) to signal the system changes required as the chiller mode changes from "ice building" to "ice complete". When contact 5K12 is provided, the chiller will run normally when the contact is open.
UC800 will accept either an isolated contact closure (External Ice Building command) or a Remote Communicated input (Tracer) to initiate and command the Ice Building mode.
UC800 also provides a "Front Panel IceTermination Setpoint", settable throughTracerTMTU, and adjustable from 20 to 31°F (-6.7 to -0.5°C) in at least 1°F (1°C) increments.
Note: When in the Ice Building mode, and the evaporator entering water temperature drops below the ice termination setpoint, the chiller terminates the Ice Building mode and changes to the Ice Building Complete Mode.

NOTICE: Equipment Damage! Freeze inhibitor must be adequate for the leaving water temperature. Failure to do so will result in damage to system components.

TracerTM TU must also be used to enable or disable Ice Machine Control. This setting does not prevent the Tracer from commanding Ice Building mode.
Upon contact closure, the UC800 will initiate an ice building mode, in which the unit runs fully loaded at all times. Ice building shall be terminated either by opening the contact or based on the entering evaporator water temperature. UC800 will not permit the ice building mode to be reentered until the unit has been switched out of ice building mode (open 5K12 contacts) and then switched back into ice building mode (close 5K12 contacts.)
In ice building, all limits (freeze avoidance, evaporator, condenser, current) will be ignored. All safeties will be enforced.
If, while in ice building mode, the unit gets down to the freeze stat setting (water or refrigerant), the unit will shut down on a manually resettable diagnostic, just as in normal operation.
Connect leads from 5K12 to the proper terminals of 1A15. Refer to the field diagrams which are shipped with the unit.
Silver or gold-plated contacts are recommended. These customer furnished contacts must be compatible with 24 VDC, 12 mA resistive load.

External Chilled Water Setpoint (ECWS) Option

The UC800 provides inputs that accept either 4-20 mA or 2-10 VDC signals to set the external chilled water setpoint (ECWS).This is not a reset function.The input defines the setpoint.This input is primarily used with generic BAS (building automation systems). The chilled water setpoint set via the Tracer TD7 or through digital communication withTracer (Comm4).The arbitration of the various chilled water setpoint sources is described in the flow charts at the end of the section.

The chilled water setpoint may be changed from a remote location by sending either a 2-10 VDC or 4-20 mA signal to the 1A14, terminals 5 and 6 LLID. 2-10 VDC and 4-20 mA each correspond to a 10 to 65°F (-12 to 18°C) external chilled water setpoint.

The following equations apply:

Voltage Signal

As generated from external source

VDC=0.1455*(ECWS) + 0.5454

As processed by UC800

ECWS=6.875*(VDC) - 3.75

Current Signal

As generated from external source

mA=0.2909(ECWS) + 1.0909

As processed by UC800

ECWS=3.4375(mA) - 3.75

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Installation Electrical

If the ECWS input develops an open or short, the LLID will report either a very high or very low value back to the main processor. This will generate an informational diagnostic and the unit will default to using the Front Panel (TD7) Chilled Water Setpoint.
Tracer TU Service Tool is used to set the input signal type from the factory default of 2-10 VDC to that of 4-20 mA. Tracer TU is also used to install or remove the External Chilled Water Setpoint option as well as a means to enable and disable ECWS.

External Demand Limit Setpoint (EDLS) Option

Similar to the above, the UC800 also provides for an optional External Demand Limit Setpoint that will accept either a 2-10 VDC (default) or a 4-20 mA signal. The Demand Limit Setting can also be set via the Tracer TD7 or through digital communication with Tracer (Comm4). The arbitration of the various sources of demand limit is described in the flow charts at the end of this section.The External Demand Limit Setpoint may be changed from a remote location by hooking up the analog input signal to the 1A14 LLID terminals 2 and 3. Refer to the following paragraph on Analog Input Signal Wiring Details.
The following equations apply for EDLS:

Voltage Signal

As generated from external source

VDC+0.133*(%)-6.0

As processed by UCM %=7.5*(VDC)+45.0

Current Signal mA=0.266*(%)-12.0
%=3.75*(mA)+45.0

If the EDLS input develops an open or short, the LLID will report either a very high or very low value back to the man processor. This will generate an informational diagnostic and the unit will default to using the Front Panel (Tracer TD7) Current Limit Setpoint.
The TracerTM TU Service Tool must be used to set the input signal type from the factory default of 2-10 VDC to that of 4-20 mA current. Tracer TU must be also be used to install or remove the External Demand Limit Setpoint Option for field installation, or can be used to enable or disable the feature (if installed).
EDLS and ECWS Analog Input Signal Wiring Details:
Both the ECWS and EDLS can be connected and setup as either a 2-10 VDC (factory default), 4-20 mA, or resistance input (also a form of 4-2OmA) as indicated below. Depending on the type to be used, the Tracer TU Service Tool must be used to configure the LLID and the MP for the proper input type that is being used.This is accomplished by a setting change on the CustomTab of the Configuration View withinTracerTU.
Important: For proper unit operation, BOTH the EDLS and ECWS settings MUST be the same (2-10 VDC or 4-20mA), even if only one input is to be used.
The J2-3 and J2-6 terminal is chassis grounded and terminal J2- 1 and J2-4 can be used to source 12 VDC. The ECLS uses terminals J2-2 and J2-3. ECWS uses terminals J2-5 and J2-6. Both inputs are only compatible with high-side current sources.
Figure 2 Wiring examples for EDLS and ECWS

2-10 VDC, 4-20mA

J2-1 & 4 Dual J2-2 & 5 Analog J2-3 & 6 I/O LLID

Resister I
I = 20/(R + 200)

J2-1 & 4 Dual J2-2 & 5 Analog J2-3 & 6 I/O LLID

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Chilled Water Reset (CWR)
UC800 resets the chilled water temperature set point based on either return water temperature, or outdoor air temperature. Return Reset is standard, Outdoor Reset is optional. The following shall be selectable: · One of three Reset Types: None, Return Water Temperature Reset, Outdoor Air Temperature Reset, or Constant
Return Water Temperature Reset. · Reset Ratio Set Points.
For outdoor air temperature reset there shall be both positive and negative reset ratio's. · Start Reset Set Points. · Maximum Reset Set Points. The equations for each type of reset are as follows: Return CWS' = CWS + RATIO (START RESET - (TWE - TWL)) and CWS' > or = CWS and CWS' - CWS < or = Maximum Reset Outdoor CWS' = CWS + RATIO * (START RESET - TOD) and CWS' > or = CWS and CWS' - CWS < or = Maximum Reset where CWS' is the new chilled water set point or the "reset CWS" CWS is the active chilled water set point before any reset has occurred, e.g. normally Front Panel, Tracer, or ECWS RESET RATIO is a user adjustable gain START RESET is a user adjustable reference TOD is the outdoor temperature TWE is entering evap. water temperature TWL is leaving evap. water temperature MAXIMUM RESET is a user adjustable limit providing the maximum amount of reset. For all types of reset, CWS' CWS < or = Maximum Reset.

Range

Increment

Reset Type

Reset Ratio

Start Reset

Max Reset

IP Units

SI Units

Factory Default

Return

10 to 120%

4 to 30 F 0 to 20 F 1%

50%

(2.2 to (0.0 to 16.7 C) 11.1 C)

Outdoor

80 to -80%

50 to 130 F

0 to 20 F 1%

10%

(10 to (0.0 to 54.4 C) 11.1 C)

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Installation Electrical
In addition to Return and Outdoor Reset, the MP provides a menu item for the operator to select a Constant Return Reset. Constant Return Reset will reset the leaving water temperature set point so as to provide a constant entering water temperature. The Constant Return Reset equation is the same as the Return Reset equation except on selection of Constant Return Reset, the MP will automatically set Ratio, Start Reset, and Maximum Reset to the following. RATIO = 100% START RESET = Design Delta Temp. MAXIMUM RESET = Design Delta Temp. The equation for Constant Return is then as follows: CWS' = CWS + 100% (Design DeltaTemp. - (TWE -TWL)) and CWS' > or = CWS and CWS' - CWS < or = Maximum Reset When any type of CWR is enabled, the MP will step the Active CWS toward the desired CWS' (based on the above equations and setup parameters) at a rate of 1 degree F every 5 minutes until the Active CWS equals the desired CWS'. This applies when the chiller is running. When the chiller is not running, CWS is reset immediately (within one minute) for Return Reset and at a rate of 1 degree F every 5 minutes for Outdoor Reset. The chiller will start at the Differential to Start value above a fully reset CWS or CWS' for both Return and Outdoor Reset.
Communications Interface
LonTalkTM Interface (LCI-C) UC800 provides an optional LonTalkTM Communication Interface (LCI-C) between the chiller and a Building Automation System (BAS). An LCI-C LLID shall be used to provide "gateway" functionality between a LonTalk compatible device and the Chiller. The inputs/outputs include both mandatory and optional network variables as established by the LonMark Functional Chiller Profile 8040. Note: For more information see ACC-SVN100*-EN. BACnet Protocol The Building Automation and Control Network (BACnet and ANSI/ASHRAE Standard 135-2004) protocol is a standard that allows building automation systems or components from different manufacturers to share information and control functions. BACnet provides building owners the capability to connect various types of building control systems or subsystems together for a variety of reasons. In addition, multiple vendors can use this protocol to share information for monitoring and supervisory control between systems and devices in a multi-vendor interconnected system.The BACnet protocol identifies standard objects (data points) called BACnet objects. Each object has a defined list of properties that provide information about that object. BACnet also defines a number of standard application services that are used to access data and manipulate these objects and provides a client/server communication between devices. BACnet Testing Laboratory (BTL) Certification AllTracerTM UC800 controllers are designed to support BACnet communication protocol. In addition,someparticular revisions of the UC800 firmware have been tested and have achieved BTL certification by an official BACnet testing laboratory. For more details, refer to the BTL website at www.bacnetassociation.org. Modbus RTU Protocol Modicon Communication Bus (Modbus) is an application layer-messaging protocol that, like BACnet, provides client/server communication between devices over a variety of networks. During communications on a Modbus RTU network, the protocol determines how each controller will know its device address, recognize a message addressed to its device, determine what action to take, and extract any data or other information contained in the message. Controllers communicate using a master/slave technique, whereby, only one device (master) can initiate transactions (queries). Other devices (slaves) respond by supplying the requested data to the master or by taking the action requested in the query. The master can address individual slaves or it can initiate a broadcast message to all slaves. In turn, the slaves respond to queries that are addressed to them individually or broadcasted. The Modbus RTU protocol establishes the format for the master's query by placing into it the device address, a function code defining the requested action, any data to be sent, and an error-checking field.

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Controls
Overview
RTHD units utilize the following control/interface components: · TracerTM UC800 Controller · Tracer TD7 Operator Interface
UC800 Specifications
This section covers information pertaining to the UC800 controller hardware. Wiring and Port Descriptions Figure 3 illustrates the UC800 controller ports, LEDs, rotary switches, and wiring terminals.The numbered list following Figure 3 corresponds to the numbered callouts in the illustration.
Figure 3 Wiring locations and connection ports

Front View

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Controls
Figure 3 Wiring locations and connection ports

Bottom View
1. Rotary Switches for setting BACnet® MAC address or MODBUS ID. 2. LINK for BACnet MS/TP, or MODBUS Slave (two terminals, ±). Field wired if used. 3. LINK for BACnet MS/TP, or MODBUS Slave (two terminals, ±). Field wired if used. 4. Machine bus for existing machine LLIDs (IPC3Tracer bus 19.200 baud). IPC3 Bus: used for Comm4 usingTCI or LonTalk® using LCI-C. 5. Power (210 mA at 24 Vdc) and ground terminations (same bus as item 4). Factory wired. 6. Not used. 7. Marquee LED power and UC800 Status indicator. 8. Status LEDs for the BAS link, MBus link, and IMC link. 9. USB device type B connection for the service tool (Tracer TU). 10. The Ethernet connection can only be used with the Tracer AdaptiView display. 11. USB Host (not used).
Communication Interfaces There are four connections on the UC800 that support the communication interfaces listed. Refer to Figure 3, p. 15 for the locations of each of these ports. · BACnet MS/TP · MODBUS Slave · LonTalk using LCI-C (from the IPC3 bus) · Comm 4 using TCI (from the IPC3 bus) Rotary Switches There are three rotary switches on the front of the UC800 controller. Use these switches to define a three-digit address when the UC800 is installed in a BACnet or MODBUS system (e.g., 107, 127, etc.). Note: Valid addresses are 001 to 127 for BACnet and 001 to 247 for MODBUS. LED Description and Operation There are 10 LEDs on the front of the UC800. Figure 4 shows the locations of each LED andTable 8, p. 17 describes their behavior in specific instances.

RLC-SVU006B-GB

Figure 4 LED locations

Controls

Table 8 LED behavior

LED

UC800 Status

Marquee LED

Powered. If the Marquee LED is green solid, the UC800 is powered and no problems exist. Low power or malfunction. If the Marquee LED is red solid, the UC800 is powered, but there are problems present. Alarm. The Marquee LED blinks Red when an alarm exists.

LINK,

The TX LED blinks green at the data transfer rate when the UC800 transfers data to other devices on the link.

MBUS, IMC The Rx LED blinks yellow at the data transfer rate when the UC800 receives data from other devices on the link.

Ethernet Link

The LINK LED is solid green if the Ethernet link is connected and communicating. The ACT LED blinks yellow at the data transfer rate when data flow is active on the link.

Service The Service LED is solid green when pressed. For qualified service technicians only. Do not use.

NOTICE: Electrical Noise! Maintain at least 6 inches between low-voltage (<30V) and high voltage circuits. Failure to do so could result in electrical noise that could distort the signals carried by the low-voltage wiring, including IPC.

RLC-SVU006B-GB

Controls
Tracer TD7 Operator Interface
Information is tailored to operators, service technicians, and owners. When operating a chiller, there is specific information you need on a day-to-day basis--setpoints, limits, diagnostic information, and reports. Day-to-day operational information is presented at the display. Logically organized groups of information--chiller modes of operation, active diagnostics, settings and reports put information conveniently at your fingertips.
TracerTM TU
The RTHD operator interface allows for daily operational tasks and setpoint changes. However, to adequately service chillersTracerTMTU service tool is required. (Non-Trane personnel, contact your localTrane office for software purchase information.) Tracer TU adds a level of sophistication that improves service technician effectiveness and minimizes chiller downtime. This portable PC-based service-tool software supports service and maintenance tasks, and is required for software upgrades, configuration changes and major service tasks. Tracer TU serves as a common interface to all Trane® chillers, and will customize itself based on the properties of the chiller with which it is communicating. Thus, the service technician learns only one service interface. The panel bus is easy to troubleshoot using LED sensor verification. Only the defective device is replaced.TracerTU can communicate with individual devices or groups of devices. All chiller status, machine configuration settings, customizable limits, and up to 100 active or historic diagnostics are displayed through the service-tool software interface. LEDs and their respectiveTracerTU indicators visually confirm the availability of each connected sensor, relay, and actuator. TracerTU is designed to run on a customer's laptop, connected to theTracer control panel with a USB cable. Your laptop must meet the following hardware and software requirements: · 1 GB RAM (minimum) · 1024 x 768 screen resolution · CD-ROM drive · Ethernet 10/100 LAN card · An available USB 2.0 port · Microsoft® Windows® XP Professional operation system with Service Pack 3 (SP3) or Windows 7 Enterprise or
Professional operating system (32-bit or 64-bit) · Microsoft .NET Framework 4.0 or later

RLC-SVU006B-GB

Controls
Note: TracerTU is designed and validated for this minimum laptop configuration. Any variation from this configuration may have different results.Therefore, support forTracerTU is limited to only those laptops with the configuration previously specified.
Note: For more information, see TTU-SVN01A-EN Tracer TU Getting Started Guide.
Figure 5 Tracer TU

RLC-SVU006B-GB

Diagnostics
Diagnostic Name and Source: Name of Diagnostic and its source. Note that this is the exact text used in the User Interface and/or Service Tool displays.
Affects Target: Defines the "target" or what is affected by the diagnostic. Usually either the entire Chiller, or a particular Circuit or Compressor is affected by the diagnostic (the same one as the source), but in special cases functions are modified or disabled by the diagnostic. None implies that there is no direct affect to the chiller, sub components or functional operation.
Design Note: TracerTM TU does not support the display of certain targets on its Diagnostics pages although the functionality implied by this table is supported. Targets such as Evap Pump, Ice Mode, Chilled Water Reset, External Setpoints etc. are displayed as simply "Chiller" even though they do not imply a chiller shutdown only a compromise of the specific feature.
Severity: Defines the severity of the above effect. Immediate means immediate shutdown of the affected portion, Normal means normal or friendly shutdown of the affected portion, Special Action means a special action or mode of operation (limp along) is invoked, but without shutdown, and Info means an Informational Note or Warning is generated. Design Note: Tracer TU does not support display of "Special Action", on its Diagnostics pages, so that if a diagnostic has a special action defined in the table below, it will be displayed only as "Informational Warning" as long as no circuit or chiller shutdown results. If there is a shutdown and special action defined in the table, then the Tracer TU Diagnostics Page display will indicate the shutdown type only.
Persistence: Defines whether or not the diagnostic and its effects are to be manually reset (Latched), or can be either manually or automatically reset when and if the condition returns to normal (Nonlatched).
Active Modes [Inactive Modes]: States the modes or periods of operation that the diagnostic is active in and, as necessary, those modes or periods that it is specifically "not active" in as an exception to the active modes. The inactive modes are enclosed in brackets, [ ]. Note that the modes used in this column are internal and not generally annunciated to any of the formal mode displays.
Criteria: Quantitatively defines the criteria used in generating the diagnostic and, if nonlatching, the criteria for auto reset. If more explanation is necessary a hot link to the Functional Specification is used.
Reset Level: Defines the lowest level of manual diagnostic reset command which can clear the diagnostic. The manual diagnostic reset levels in order of priority are: Local or Remote. 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.
Help Text: Provides for a brief description of what kind of problems might cause this diagnostic to occur. Both control system component related problems as well as chiller application related problems are addressed (as can possibly be anticipated).These help messages will be updated with accumulated field experience with the chillers.

RLC-SVU006B-GB

Diagnostics

Starter Diagnostics

Hex Code

Diagnostic Name and Source

Effects Target

Severity

Persistence

Active Modes [Inactive Modes]

Criteria

Phase Reversal

Chiller Immediate

Latch

Compressor energized
to transition command [All Other Times]

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 0.3 second from compressor start.

Reset Level
Local

188 Starter Dry Run Test Chiller Immediate

Latch

Starter Dry Run Mode

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.

Local

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 three phases lost

while running). Must hold = 20% RLA.

Must trip = 5% RLA. Time to trip shall be

Phase Loss

Chiller Immediate

Latch

Start Sequence and Run modes

longer than guaranteed reset on Starter Module at a minimum, 3 seconds maximum. Actual design trippoint is 10%. The actual

Local

design trip time is 2.64 seconds. b) If Phase

reversal protection is enabled and current

is not sensed on one or more current

xformer inputs. Logic will detect and trip in

a maximum of 0.3 second from compressor

start.

Momentary Power Loss option disabled: No

All compressor effect.

running and Momentary Power Loss option enabled: A

Momentary Power Loss

Chiller Immediate Nonlatch

stopping modes loss of power on three line cycles or more [all compressor was detected. Diagnostic is reset in 30

Remote

starting and non- seconds.

running modes] See Momentary Power Loss Protection

specification for additional information.

The compressor had previously established

currents while running and then all three

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

1A0

Power Loss

Chiller Immediate NonLatch

All compressor running modes [all compressor starting and nonrunning modes]

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

Remote

diagnostic will auto reset in 10 seconds from

its occurrence, and is not active during the

start mode before the transition complete

input is proven. This prevents the chiller from

cycling due to some internal starter problem,

as the starter would latch out on either a

"Starter Fault Type 3" or a "Starter Did Not

Transition" latching diagnostic. However true

power loss occurring during a start would

result in a misdiagnosis and the chiller would

not automatically recover.

Severe Current Imbalance

Chiller Normal

Latch

A 30% current imbalance has been detected All Running Modes on one phase relative to the average of all
3 phases for 90 continuous seconds.

Local

RLC-SVU006B-GB

Diagnostics

Hex Code

Diagnostic Name and Source

Effects Target

Severity

Persistence

Active Modes [Inactive Modes]

Criteria

1E9 Starter Fault Type I Chiller Immediate

Latch

Starting - Y Delta Starters Only

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.

Reset Level
Local

1ED Starter Fault Type II Chiller Immediate

Latch

Starting All types of starters

a. 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.).

Local

1F1 Starter Fault Type III Chiller Immediate

Latch

Starting [Adaptive Frequency Starter
Type]

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 three phases. The test above applies to all forms of starters.

Local

189

Solid State Starter Fault

Chiller Immediate

Latch

All

The Solid State Starter Fault Relay is open

Local

701

AFD Drive Fault

Chiller Immediate

Latch

All

The AFD Drive Fault Relay is open

Local

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

Starter Did Not Transition

Chiller Immediate

Latch

On the first check transition command is 1 second. The Must after transition. trip time from the transition command is

Local

6 seconds. Actual design is 2.5 seconds. This

diagnostic is active only for Y-Delta, Auto-

Transformer, Primary Reactor, and X-Line

Starters.

1F5

Compressor Did Not Accelerate Fully

Chiller Immediate

Latch

Start Mode

The starter module did not receive an "Up to Speed" or "End of Ramp" signal from the SSS within 2.5 seconds after commanding a bypass, or after the maximum acceleration time had expired, whichever is longer. This diagnostic only applies to SSS/AFD.

Local

1FA

Compressor Did Not Accel: Transition

Chiller

Info

Latch

Start Mode

The compressor did not come up to speed

(get to <85%RLA) in the allotted time

defined by the Maximum Acceleration Timer

and a transition was forced (motor put across

the line) at that time. This applies to all starter types. Note: Since RTHD SSS has no

Remote

forced transition capability, this info warning

can be followed with a "Compressor did not

accelerate fully" diagnostic above and an

aborted start.

Compressor Did Not Accelerate: Shutdown

Chiller

Immediate

Latch

Start Mode

The compressor did not come up to speed (get to <85%RLA) in the allotted time defined by the Maximum Acceleration Timer and and the start was aborted per the starter configuration selected.

Remote

3D5

Transition Complete Input Shorted

Chiller Immediate

Latch

Pre-Start

The Transition Complete input is shorted before the compressor was started. This is active for all electromechanical starters.

Local

3D6

At Speed Input Shorted

Chiller Immediate

Latch

Pre-Start

The "At Speed" input is shorted before the compressor was started. This is active for solid state starters and AFD.

Local

RLC-SVU006B-GB

Diagnostics

Hex Code

Diagnostic Name and Source

Effects Target

Severity

Persistence

Active Modes [Inactive Modes]

Criteria

3D7

Transition Complete Input Opened

Chiller Immediate

Latch

All Running Modes after transition completed

The Transition Complete input is open with the compressor motor running after a successful completion of transition. This is active only for all electromechanical starters

Reset Level
Local

3D8

At Speed Input Opened

Chiller Immediate

Latch

The "At Speed" input was found to be

All Running Modes opened with the compressor motor running

after At Speed after successfully obtaining an at speed and

proven

bypassed condition. This is active for solid

state starters and AFD

Local

Compressor current exceeded overload time

Motor Current Overload

Chiller Immediate

Latch

Chiller Energized

vs. trip characteristic. For A/C products Must trip = 140% RLA, Must hold=125%, nominal

Local

trip 132.5% in 30 seconds

Detected compressor currents greater than

10% RLA on any or all phases when the

compressor was commanded off. Detection

time shall be 5 seconds minimum and

Starter Contactor Interrupt Failure

Immediate Chiller and Special
Action

Latch

Starter Contactor not Energized
[Starter Contactor Energized]

10 seconds maximum. On detection and until the controller is manually reset: generate diagnostic, energize the appropriate alarm relay, continue to energize the Evap and Cond Pump Outputs, continue to command

Local

the affected compressor off, fully unload the

effected compressor. For as long as current

continues, perform liquid level and oil return

gas pump control

Over Voltage

Chiller Normal

NonLatch

a. Average of all monitored Line voltages

above + 10% of nominal. [Must hold =

+ 10% of nominal. Must trip = + 15% of

nominal. Reset differential = min. of 2%

All

and max. of 4%. Time to trip = minimum

Remote

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.

Under Voltage

Chiller Normal

NonLatch

a. Average of all monitored Line voltages

below - 10% of nominal or the Under/

Overvoltage transformer(s) are not

connected. [Must hold = - 10% of nominal.

Must trip = - 15% of nominal. Reset

All

differential = min. of 2% and max. of 4%. Remote

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.

RLC-SVU006B-GB

Diagnostics

Main Processor Diagnostics

Hex Code

Diagnostic Name

Effects Target

Severity

Persistence

Active Modes [Inactive Modes]

Criteria

Reset Level

MP: Reset Has Occurred

Chiller

Info

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,

All

installing new software or configuration. This Remote

diagnostic is immediately and automatically

cleared and thus can only be seen in the

Historic Diagnostic List in TechView

6B5

Unexpected Starter Shutdown

Chiller

Normal

All Cprsr Running The Starter module status reported back that

modes, Starting, it is stopped when it should be running and

Nonlatch

Running and no Starter diagnostic exists. This diagnostic

Preparing to will be logged in the active buffer and then

Shutdown

cleared.

Low Evaporator

Refrigerant

Chiller Immediate

Latch

Temperature

All Ckt Running Modes

a. The inferred Saturated Evap Refrigerant Temperature (calculated from suction pressure transducer(s)) dropped below the Low Refrigerant Temperature Cutout Setpoint for 450°F-sec (10°F-sec max rate) while the circuit was running after the ignore period had expired. The integral is held at zero for the 1 minute ignore time following the circuit startup and the integral will be limited to never trip in less than 45 seconds, i.e. the error term shall be clamped to 10°F. The minimum LRTC setpoint is -5°F (18.7 Psia) 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 and the load solenoid shall be off. Normal load/unload operation will be resumed if the trip integral is reset by return to temps above the cutout setpoint.

Remote

The oil pressure was out of the acceptable

pressure range for 15 seconds, while the

198

Low Oil Flow

Chiller Immediate

Latch

Chiller Energized and Delta P above
15 Psid

Delta Pressure was greater than 15 Psid.: Acceptable range is 0.50 or 0.60 > (PC-Po) / (PC-PE) for the first 2.5 minutes of operation, and 0.40 or 0.50 > (PC-Po) / (PC-PE)

Local

thereafter. The higher ratios used if the

system DP is less than 23 psid

59C

Loss of Oil at Compressor (Running)

Chiller Immediate

Latch

Starter Contactor Energized

In running modes , Oil Loss Level Sensor detects lack of oil in the oil tank feeding the compressor (distinguishing a liquid flow from a vapor flow)

Local

59D

Loss of Oil at Compressor (Stopped)

Immediate Chiller and Special
Action

Latch

Compressor Prestart [all other modes]

Oil Loss Level Sensor detects a lack of oil in the oil tank feeding the compressor for 90 seconds after EXV preposition is completed. Note: Compressor start is delayed while waiting for oil to be detected.

Local

1AE

Low Differential Refrigerant Pressure

Chiller Immediate

Latch

Chiller Energized

The system differential pressure was either

below 15 Psid for more than 164 Psid-sec,

or below 23.0 Psid for 3000 Psid-sec. The

latter integral's value is not cleared for any

reason including diagnostic trip, manual

reset, or power up reset (ie. Integral is saved nonvolatily on power down). The integral will

Remote

decay while circuit is running at a max rate

of 10 PSID, and while stopped at a rate of

0.4 PSID. This same integral is associated

with the operating mode "Compressor Cool

Down". Also see diagnostic below

297

No Differential Refrigerant Pressure

Chiller Immediate

Latch

Chiller Energized

The system differential pressure was below 7.7 Psid. The occurrence of this diagnostic will saturate the above "Low Diff Rfgt Press" Integral and invoke the same "Compressor Cool Down" op mode.

Remote

RLC-SVU006B-GB

Diagnostics

Hex Code

Diagnostic Name

Effects Target

Severity

Persistence

Active Modes [Inactive Modes]

Criteria

Reset Level

1C6

High Differential Refrigerant Pressure

Chiller

Normal

Latch

Chiller Energized

a. The system differential pressure was above 160 Psid- trip immediately (normal shutdown)
B The diff pressure was above 152 Psid - trip in 1 hour

Remote

The system pressure ratio exceeded 5.61 for

1C6

High Refrigerant Pressure Ratio

Chiller Immediate

Latch

Service Pumpdown Only

1 contiguous minute. This pressure ratio is a fundamental limitation of the compressor. The pressure ratio is defined as Pcond (abs)/

Remote

Pevap(abs).

The compressor discharge temperature

exceeded 190°F. This diagnostic will be

suppressed if it occurs during the compressor

1C2

High Cprsr Rfgt Discharge
Temperature

Chiller Immediate

Latch

All [compressor not running or during compressor
run unload]

run-unload period or after the compressor has stopped, but a run unload will be terminated early as a result. Note: As part of the Compressor High Temperature Limit Mode (aka Minimum Capacity Limit), the

Remote

compressor shall be forced loaded as the

filtered discharge temperature nears this

trip-point.

18E

Low Discharge Superheat

Chiller Normal

Latch

While Running Normally, the Discharge

Superheat was less than 12 degrees F +- 1F

Any Running Mode for more than 6500 degree F seconds.

Remote

At startup the UCM shall ignore the Discharge

Superheat for 5 minutes.

Compressor

284

Discharge

Chiller Immediate

Temperature Sensor

Latch

All

Bad Sensor or LLID

Remote

27D

Evaporator Liquid Level Sensor

Chiller Normal

Latch

All

Bad Sensor or LLID

Remote

BAS Failed

390

to Establish

Chiller Special

Communication

At power-up

The BAS was setup as "installed" and the BAS did not communicate with the MP within 15 minutes after power-up. 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.

Remote

398

BAS Communication Lost

Chiller

Special

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

All

how setpoints and operating modes may

Remote

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).

583

Low Evaporator Liquid Level

Chiller

Info

NonLatch

Starter Contactor Energized
[all Stop modes]

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)

Remote

584

High Evaporator Liquid Level

Chiller Normal

Latch

Starter Contactor Energized
[all Stop modes]

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 Remote when the circuit is off). Design: 80% or more of bit count corresponding to +21.2 mm or more liquid level for 80 minutes)

RLC-SVU006B-GB

Diagnostics

Hex Code

Diagnostic Name

Effects Target

Severity

Persistence

Active Modes [Inactive Modes]

Criteria

Reset Level

External Chilled/Hot Water Setpoint

Chiller

Info

NonLatch

a. Function Not "Enabled": no diagnostics. b.

"Enabled": Out-Of-Range Low or Hi or bad

All

LLID, set diagnostic, default CWS to next level of priority (e.g. Front Panel SetPoint).

Remote

This Info diagnostic will automatically reset if

the input returns to the normal range.

External Current Limit Setpoint

Chiller

Info

NonLatch

a. Not "Enabled": no diagnostics. b.

"Enabled": Out-Of-Range Low or Hi or bad

All

LLID, set diagnostic, default CLS to next level of priority (e.g. Front Panel SetPoint. This

Remote

Info diagnostic will automatically reset if the

input returns to the normal range.

702

AFD output power input

Chiller

Info

NonLatch

Out-Of-Range Low or Hi or bad LLID,

All

set diagnostic, This Info diagnostic will automatically reset if the input returns to the

normal range.

4C4

External Base Loading Setpoint

Chiller

Info and Special Action

NonLatch

a. Not "Enabled": no diagnostics. b.

"Enabled": Out-Of-Range Low or Hi or bad

All

LLID, set diagnostic, default BLS to next level of priority (e.g. Front Panel SetPoint. This

Remote

Info diagnostic will automatically reset if the

input returns to the normal range.

Evap Water Flow

(Entering Water

Chiller

Info

Temp)

NonLatch

Any Ckt(s) Energized [No Ckt(s) Energized]

The entering evaporator water temp fell below the leaving evaporator water temp. by more than 2°F for 100°F-sec. For falling film evaporators 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

Remote

Evaporator Entering Water Temp Sensor

Chiller

Info and Special Action

Latch

Bad Sensor or LLID Normal operation unless

CHW Reset is enabled. If CHW Reset is

enabled and either Return or Constant Return Chilled Water Reset is selected, its effect will

Remote

be removed but slew rates on the change will

be limited per the Chilled Water Reset spec.

Evaporator Leaving Water Temp Sensor

Chiller

Normal

Latch

All

Bad Sensor or LLID

Remote

Condenser Entering Water Temp Sensor

Chiller

Info and Special Action

Latch

Bad Sensor or LLID. If chiller running, and

All

condenser water regulating valve option

Remote

installed, force valve to 100% flow.

Condenser Leaving Water Temp Sensor

Chiller

Info

Latch

All

Bad Sensor or LLID

Remote

5B8

Condenser Rfgt Pressure Transducer

Chiller

Normal

Latch

All

Bad Sensor or LLID

Remote

5BA

Evaporator Rfgt Pressure Transducer

Chiller

Normal

Latch

All

Bad Sensor or LLID

Remote

5BE

Oil Pressure Transducer

Chiller Normal

Latch

All

Bad Sensor or LLID

Remote

1E1

Oil Flow Protection Fault

Chiller Immediate

Latch

The Oil Pressure Transducer for this Chiller

Starter Contactor is reading a pressure either above its

Energized [all Stop Condenser Pressure by 15 Psia or more, or

modes]

below its Evaporator Pressure 10 Psia or

more for 30 seconds continuously.

Local

Low Evaporator Refrigerant Pressure

Chiller Immediate

Latch

The Evaporator Refrigerant Pressure dropped below 10 psia just prior to compressor Chiller Prestart and start. The pressure fell below 10 psia while Chiller Energized running but before the 3 minute ignore time had expired or fell below 16 Psia after the 3 minute ignore time had expired.

Local

RLC-SVU006B-GB

Diagnostics

Hex Code

Diagnostic Name

Effects Target

Severity

Persistence

Active Modes [Inactive Modes]

Criteria

Reset Level

Low Evaporator Water Temp (Unit Off)

Chiller

Info and Special Action

NonLatch

The leaving Evaporator water temp. fell

below the leaving water temp cutout setting

Unit in Stop Mode, for 30 degree F seconds while the Chiller is

or in Auto Mode in the Stop mode, or in Auto mode with no

and No Ckt(s) compressors running. Energize Evap Water

Energized

pump Relay until diagnostic auto resets,

[Any Ckt

then return to normal evap pump control.

Energized]

Automatic reset occurs when the temp rises

2°F (1.1°C) above the cutout setting for

30 minutes.

Remote

The evap sat temp fell below the water temp

cutout setting while the respective evap

liquid level was greater than 21.2 mm for

6B3

Low Evaporator Temp: Unit Off

Chiller

Info and Special Action

NonLatch

Unit in Stop Mode, or in Auto Mode and No Ckt's Energizd
[Any Ckt Energizd]

30 (or 150 begining with rev 08) degree F seconds while Chiller is in the Stop mode, or in Auto mode with no compressors running. Energize Evap Water pump Relay until diagnostic auto resets, then return to normal evap pump control. Automatic reset occurs

Remote

when either the evap temp rises 2°F (1.1°C)

above the cutout setting or the liquid level

falls below 21.2mm for 30 minutes

Low Evaporator Water Temp (Unit On)

Chiller

Immediate and Special
Action

NonLatch

Any Ckt[s] Energized [No Ckt(s) Energizd]

The Evaporator water temp. fell below the

cutout setpoint for 30 degree F Seconds

while the compressor was running. Automatic

reset occurs when the temperature rises

Remote

2°F (1.1°C) above the cutout setting for

2 minutes. This diagnostic shall not de-

energize the Evaporator Water Pump Output.

384

Evaporator Water Flow Overdue

Chiller Normal

NonLatch

Evaporator water flow was not proven within 20 minutes of the Evaporator water pump Estab. Evap. Water relay being energized. The Evap pump Flow on going from command status will not be effected. This STOP to AUTO. diagnostic will auto-clear on proof of flow (6-10 seconds of continuous flow), or if chiller is returned to Stop mode.

Remote

The Evaporator water flow proof input was

open for more than 6-10 contiguous seconds

after flow had been proven. The pump

Evap pump

command status will not be effected. Even

Evaporator Water Flow Lost

Chiller Immediate NonLatch

commanded "on" except for

though the pump may be commanded to run in the STOP modes (pump off delay time),

Remote

[All Stop modes] this diagnostic shall not be called out in the

STOP modes. This diagnostic will auto-clear

on proof of flow (6-10 seconds of continuous

flow), or if chiller is returned to Stop mode.

Condenser water flow was not proven within

20 minutes of the condenser pump relay

Condenser Water Flow Overdue

Chiller Normal

NonLatch

Estab Cond Water being energized. The Cond Pump shall be

Flow

commanded off. Diagnostic is reset with

Remote

return of flow (although only possible with

external control of pump)

The condenser water flow proof input was

open for more than 6 contiguous seconds

Condenser Water Flow Lost

Chiller Immediate NonLatch

Start and All Run Modes

after flow had been proven. This diagnostic is automatically cleared once the compressor is stopped by a fixed time out of 7 sec. The

Remote

Cond Pump shall be commanded off but the

Evap pump command will not be effected.

6B8

High Evaporator Refrigerant Pressure

Immediate Chiller and Special
Action

NonLatch

The evaporator refrigerant pressure has

risen above 190 psig (future use add "for

continuous15 seconds"). The evaporator

water pump relay will be de-energized to

All

stop the pump regardless of why the pump is running. The diagnostic will auto reset

Local

and the pump will return to normal control

when the evaporator pressures falls below

185 psig. This diagnostic must shutdown the

chiller if it is running.

RLC-SVU006B-GB

Diagnostics

Hex Code

Diagnostic Name

Effects Target

Severity

Persistence

Active Modes [Inactive Modes]

Criteria

Reset Level

6B6

High Evaporator Water Temperature

Chiller

Info and Special Action

NonLatch

The leaving water temperature exceeded

the high evap water temp limit (TV service

menu settable default 105F) for 15

continuous seconds. The evaporator water

pump relay will be de-energized to stop the

Only effective if pump but only if it is running due one of the

either

diagnostics listed on the right. The diagnostic

1)Evap Wtr Flow Overdue,

will auto reset and the pump will return to normal control when the temperature falls 5°F below the trip setting. The primary

2)Evap Wtr Flow purpose is to stop the evaporator water

Loss, or 3)Low pump and its associated pump heat from

Evap Rfgt Temp,- causing excessive waterside temperatures

Unit Off, diagnostic and waterside pressures when the chiller is

is active.

not running but the evap pump is on due to

either Evap Water Flow Overdue, Evaporator

Water Flow Loss , or Low Evap Temp Unit

Off Diagnostics. This diagnostic will not

auto clear solely due to the clearing of the

enabling diagnostic.

Local

F5 High Pressure Cutout Chiller Immediate

Latch

A high pressure cutout was detected; C.O. on

rise @ 180 psig, reset @ 135 psig (+/-5 psi

on switching tolerance) Note: Pressure relief

valve is 200 Psig +- 2% trip at 315 ± 5 psi.

All

Note: Other diagnostics that may occur as an Local

expected consequence of the HPC trip will be

suppressed from annunciation. These include

Phase Loss, Power Loss, and Transition

Complete Input Open.

Emergency Stop Chiller Immediate

Latch

a. EMERGENCY STOP input is open. An

All

external interlock has tripped. Time to trip from input opening to unit stop shall be 0.1

Local

to 1.0 seconds.

Outdoor Air Temperature Sensor

Chiller

Info and Special Action

Latch

Bad Sensor or LLID. This diagnostic will only

All

occur if OA sensor is configured.OA Chilled water reset will be suspended if selected and

Remote

Tracer OA unavailable.

2F2

Refrigerant Monitor Input

Chiller

Info

NonLatch

All if installed

Open or Shorted input and the Rfgt Monitor is setup as installed

Remote

5C5

Starter Module Memory Error Type 1

Chiller

Info

Latch

Checksum on RAM copy of the Starter LLID

All

configuration failed. Configuration recalled

Local

from EEPROM.

Starter Module

5C9

Memory Error

Chiller Immediate

Latch

Type 2 -

Checksum on EEPROM copy of the Starter

All

LLID configuration failed. Factor default

Local

values used.

5FF

MP: Invalid Configuration

None Immediate

Latch

All

MP has an invalid configuration based on the current software installed

Remote

2E6

Check Clock

Chiller

Info

Latch

The real time clock had detected loss of its

oscillator at some time in the past. Check /

replace battery? This diagnostic can be

All

effectively cleared only by writing a new

Remote

value to the chiller's time clock using the

TechView or DynaView's "set chiller time"

functions.

6A3

Starter Failed to Arm/ Start

Chiller

Info

Latch

All

Starter failed to arm or start within the allotted time (2 minutes).

Remote

28C

Restart Inhibit

Chiller

Info

NonLatch

The Restart Inhibit was invoked on a

All

compressor. This indicates excessive chiller Remote

cycling which should be corrected.

LCI-C Software

Mismatch: Use BAS Chiller

info

Tool

NonLatch

The neuron software in the LCI-C module

does not match the chiller type. Download

All

the proper software into the LCI-C neuron. To do this, use the Rover service tool, or

Remote

a LonTalk® tool capable of downloading

software to a Neuron 3150®.

RLC-SVU006B-GB

Diagnostics

Hex Code

Diagnostic Name

Effects Target

Severity

Persistence

Active Modes [Inactive Modes]

Criteria

Reset Level

Software Error

All

Latch

705 Number: 1001 Call func- Immediate power down

Trane Service

tions

reset is reqd

A high level software watchdog has

detected a condition in which there was a

continuous 5 minute period of compressor

operation, with neither chilled water flow

nor a" contactor interrupt failure" diagnostic

all

active. The occurrence of this software error local

message suggests an internal software state

chart misalignment has occurred. The events

that led up to this failure, if known, should be

recorded and transmitted to Trane Controls

Engineering (SW rev 6 and higher)

RLC-SVU006B-GB

Diagnostics

Communication Diagnostics

Hex Code

Diagnostic Name

Effects

Severity

Persistence

Active Modes [Inactive Modes]

Criteria

Reset Level

5D1

Comm Loss: Slide Valve Unload

Chiller

Normal

Latch

Continual loss of communication between the

All

MP and the Functional ID has occurred for a Remote

30 second period.

5D2

Comm Loss: Slide Valve Load

Chiller

Normal

Latch

Continual loss of communication between the

All

MP and the Functional ID has occurred for a Remote

30 second period.

5DD

Comm Loss: External Auto/Stop

Chiller

Normal

Latch

Continual loss of communication between the

All

MP and the Functional ID has occurred for a Remote

30 second period.

5DE

Comm Loss: Emergency Stop

Chiller Normal

Latch

Continual loss of communication between the

All

MP and the Functional ID has occurred for a Remote

30 second period.

Comm Loss:

Ice

5E1 External Ice Building Build-

Command

ing

Normal

Latch

Continual loss of communication between

the MP and the Functional ID has occurred

All

for a 30 second period. Chiller shall revert to Remote

normal (non-ice building) mode regardless of

last state.

5FA

Comm Loss: Ice Building Status Relay

Ice Build-
ing

Normal

Latch

Continual loss of communication between

the MP and the Functional ID has occurred

All

for a 30 second period. Chiller shall revert to Remote

normal (non-ice building) mode regardless of

last state.

5E2

Comm Loss: Outdoor Air Temperature

Chiller

Info and Special Action

Latch

Continual loss of communication between the

MP and the Functional ID has occurred for a

30 second period. Note that if this diagnostic

All

occurs, Chiller shall remove any OA Chilled Remote

Water Reset, if it was in effect and if Tracer

OA was unavailable. Apply slew rates per

Chilled Water Reset spec

5E3

Comm Loss: Evap Leaving Water Temp

Chiller

Normal

Latch

Continual loss of communication between the

All

MP and the Functional ID has occurred for a Remote

30 second period.

5E4

Comm Loss: Evap Entering Water Temp

Chiller

Info and Special Action

Latch

Continual loss of communication between

the MP and the Functional ID has occurred

All

for a 30 second period. Chiller shall remove any Return or Constant Return Chilled Water

Remote

Reset, if it was in effect. Apply slew rates per

Chilled Water Reset spec.

Comm Loss: 6B6 Condenser Leaving Chiller
Water Temp

Info

Latch

Continual loss of communication between the

All

MP and the Functional ID has occurred for a Remote

30 second period.

Comm Loss:

Info and

6B6 Condenser Entering Chiller Special

Water Temp

Action

Latch

Continual loss of communication between

the MP and the Functional ID has occurred

All

for a 30 second period. If chiller running,

Remote

and condenser water regulating valve option

installed, force valve to 100% flow.

6B6

Comm Loss: Cprsr Discharge Rfgt Temp

Chiller Immediate

Latch

Continual loss of communication between the

All

MP and the Functional ID has occurred for a Remote

30 second period.

Comm Loss: Ext

Info and

5E9 Chilled/Hot Water Chiller Special

Setpoint

Action

Latch

Continual loss of communication between the

MP and the Functional ID has occurred for a

All

30 second period. Chiller shall discontinue use of the External Chilled Water Setpoint

Remote

source and revert to the next higher priority

for setpoint arbitration

5EA

Comm Loss: Ext Current Limit Setpoint

Chiller

Info and Special Action

Latch

Continual loss of communication between the

MP and the Functional ID has occurred for a

All

30 second period. Chiller shall discontinue use of the External Current limit setpoint and

Remote

revert to the next higher priority for Current

Limit setpoint arbitration

RLC-SVU006B-GB

Diagnostics

Hex Code

Diagnostic Name

Effects

Severity

Persistence

Active Modes [Inactive Modes]

Criteria

Reset Level

Comm Loss: High

5EB

Pressure Cutout

Chiller Normal

Switch

Latch

Continual loss of communication between the

All

MP and the Functional ID has occurred for a Remote

30 second period.

Comm Loss: 5EF Evaporator Water Chiller Immediate
Flow Switch

Latch

Continual loss of communication between the

All

MP and the Functional ID has occurred for a Remote

30 second period.

Comm Loss: 6B6 Condenser Water Chiller Immediate
Flow Switch

Latch

Continual loss of communication between the

All

MP and the Functional ID has occurred for a Remote

30 second period.

Comm Loss:

5F0

Evaporator Rfgt

Chiller Normal

Pressure

Latch

Continual loss of communication between the

All

MP and the Functional ID has occurred for a Remote

30 second period.

Comm Loss:

5F2

Condenser Rfgt

Chiller Normal

Pressure

Latch

Continual loss of communication between the

All

MP and the Functional ID has occurred for a Remote

30 second period.

5F4

Comm Loss: Oil Pressure

Chiller Normal

Latch

Continual loss of communication between the

All

MP and the Functional ID has occurred for a Remote

30 second period.

6B6

Comm Loss: Oil Return Gas Pump Fill

Chiller

Normal

Latch

Continual loss of communication between the

All

MP and the Functional ID has occurred for a Remote

30 second period.

Comm Loss: Oil 6B6 Return Gas Pump Chiller Normal
Drain

Latch

Continual loss of communication between the

All

MP and the Functional ID has occurred for a Remote

30 second period.

6B6

Comm Loss: Oil Loss Level sensor Input

Chiller

Normal

Latch

Continual loss of communication between the

All

MP and the Functional ID has occurred for a Remote

30 second period.

6B6

Comm Loss: Master Oil Line SV

Chiller

Normal

Latch

Continual loss of communication between the

All

MP and the Functional ID has occurred for a Remote

30 second period.

Comm Loss: 5F8 Evaporator Water Chiller
Pump Relay

Info

Latch

Continual loss of communication between the

All

MP and the Functional ID has occurred for a Remote

30 second period.

Comm Loss: 6B6 Condenser Water Chiller
Pump Relay

Info

Latch

Continual loss of communication between the

All

MP and the Functional ID has occurred for a Remote

30 second period.

6B6

Comm Loss: SSS/AFD Fault

Chiller

Info

Latch

Continual loss of communication between the

All

MP and the Functional ID has occurred for a Remote

30 second period.

Comm Loss: 6B6 Refrigerant Monitor Chiller
Input

Info

Latch

Continual loss of communication between the

All

MP and the Functional ID has occurred for a Remote

30 second period.

6B6

Comm Loss: Ext Base Loading Setpoint

Chiller

Info and Special Action

Latch

Continual loss of communication between

the MP and the Functional ID has occurred

All

for a 30 second period. The external base load setpoint input is removed from

Remote

the arbitration to establish the Base

LoadingSetpoint.

6B6

Comm Loss: Ext Base Loading Command

Chiller

Info and Special Action

Latch

Continual loss of communication between

the MP and the Functional ID has occurred

All

for a 30 second period. The external base

Remote

load input is removed from the arbitration to

enable Base Loading.

Comm Loss:

688

Evaporator Rfgt

Chiller Normal

Liquid Level

Latch

Continual loss of communication between the

All

MP and the Functional ID has occurred for a Remote

30 second period.

690 Comm Loss: Starter Chiller Immediate

Latch

Continual loss of communication between the

All

MP and the Functional ID has occurred for a Local

30 second period.

RLC-SVU006B-GB

Diagnostics

Hex Code

Diagnostic Name

Effects

Severity

Persistence

Active Modes [Inactive Modes]

Criteria

Reset Level

Comm Loss: 694 Electronic Expansion Chiller
Valve 1

Normal

Latch

Continual loss of communication between the

All

MP and the Functional ID has occurred for a Remote

30 second period.

Comm Loss: 695 Electronic Expansion Chiller
Valve 2

Normal

Latch

Continual loss of communication between the

All

MP and the Functional ID has occurred for a Remote

30 second period.

5CD

Starter Comm Loss: Main Processor

Chiller Immediate

Latch

All

Starter has had a loss of communication with the MP for a 15 second period.

Local

69D

Comm Loss: Local BAS Interface

Chiller

Info and Special Action

Latch

Continual loss of communication between the

All

MP and the Functional ID has occurred for a 30 second period. Use the last values sent

Remote

from BAS

Comm Loss: Op 6A0 Status Programmable Chiller
Relays

Info

Latch

Continual loss of communication between the

All

MP and the Functional ID has occurred for a Remote

30 second period.

Comm Loss: 6B6 Compressor % RLA Chiller
Output

Info

Latch

Continual loss of communication between the

All

MP and the Functional ID has occurred for a Remote

30 second period.

6B6

Comm Loss: Cond Rfgt Pressure Output

Chiller

Normal

Latch

Continual loss of communication between the

All

MP and the Functional ID has occurred for a Remote

30 second period.

Comm Loss: Cond

6B6

Head Press Cntrl

Chiller Immediate

Output

Latch

Continual loss of communication between the

All

MP and the Functional ID has occurred for a Remote

30 second period.

703

Comm Loss: AFD speed signal output

Chiller Immediate

Latch

Continual loss of communication between the

All

MP and the Functional ID has occurred for a Remote

30 second period.

704

Comm Loss: AFD output power input

Chiller Immediate

Latch

Continual loss of communication between the

All

MP and the Functional ID has occurred for a Remote

30 second period.

687

Comm Loss: External Hot Water Command

Chiller

Info

Warning Reset

Continual loss of communication between the

All

MP and the Functional ID has occurred for a Remote

30 second period.

RLC-SVU006B-GB

Diagnostics

Operator Display Diagnostics and Messages

Table 9 Operator display diagnostics and messages

Operator Display Message

Description //Troubleshooting

A Valid Configuration is Present

· A valid configuration is present in the MP's nonvolatile memory. The configuration is a set of variables and settings that define the physical makeup of this particular chiller. These include: number/airflow,/and type of fans, number/and size of compressors, special features, characteristics, and control options.
· //Temporary display of this screen is part of the normal power up sequence.

Communication Lost with UC800

· Ethernet cable not connected between display and UC800. · UC800 not powered. · UC800 has an invalid configuration Download a valid configuration. · UC800 is in Binding View. When exit Binding View, select `Restart' on this message.

Display Failed to Establish Communication

· Ethernet cable not connected between display and UC800. · UC800 not powered. · UC800 just has the backup application running as received from the vendor. Download CTV
application software. · UC800 has an invalid configuration Download a valid configuration.

Display is about to Restart

· The display is low on memory, and needs to re-start. Select Yes to restart. Selecting Yes will not affect the UC800 operation.. Only the Operator Display is reset.

Error Resulted From Invalid Configuration Record Condition and Call Trane Service Assertion: `File Name' `Line Number'

· This error message is displayed when the MP code finds itself in an illegal location. These assertion points are placed in code locations to aid the software team in identifying why the MP locked up as a result of vectoring to an invalid location.
· When this message occurs, copy down the file name and line number and have this ready to give Trane service.
· This message remains on the screen for two minutes. After two minutes, the watchdog times out and a `Watchdog Error' message is displayed The watchdog then resets the MP. The MP heads into a boot and configuration mode the same as it does on a power up.
· These error messages are on the AdaptiView screen and do not appear in Tracer TU nor in the diagnostic logs.

File Not Found

· Update UC800 software with Tracer TU

Screen partially populated. Auto and Stop button graphics display, no text.

· Valid configuration is not present. Download a configuration.

Screen Unresponsive

· Tracer TU is downloading software. Wait till download is complete.

The Page Cannot be found

· Most likely this UC800 has only the backup application. Download the latest UC 800 software build.
· This could also mean that the UC800 does not have a valid configuration. Download a configuration to it.
· Cycle power to the OD and UC800. · UC could be in binding view. If so, get it out of binding view by navigating to another screen
in Tracer TU.

UC800 Configuration is Invalid

· Update the UC800 configuration with Tracer TU.

RLC-SVU006B-GB

Notes

RLC-SVU006B-GB

Notes

RLC-SVU006B-GB

Trane - by Trane Technologies (NYSE: TT), a global climate innovator - creates comfortable, energy efficient indoor environments for commercial and residential applications. For more information, please visit trane.com or tranetechnologies.com.
Trane has a policy of continuous product and product data improvement and reserves the right to change design and specifications without notice. We are committed to using environmentally conscious print practices.

RLC-SVU006B-GB July 2020
Supersedes RLC-SVU006A-GB (April 2014)
Confidential and proprietaryTrane information

Acrobat Distiller 19.0 (Windows)