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Trane Tracer UC400 - User Manual

Trane Tracer UC400
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SSAAFFEETTYY WWAARRNNIINNGG
Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and air-conditioning
equipment can be hazardous and requires specific knowledge and training. Improperly installed, adjusted or altered equipment by an unqualified person
could result in death or serious injury. When working on the equipment, observe all precautions in the literature and on the tags, stickers, and labels that
are attached to the equipment.
April 2020
BBAASS--SSVVXX4488HH--EENN
Installation, Operation, and Maintenance
Tracer
®
UC400/UC400–B
Programmable Controllers
For Blower Coil, Fan Coil, and Unit Ventilator

Table of Contents

Other manuals for Trane Tracer UC400

Questions and Answers

  • N
    Nicholas SmithAug 17, 2025
    What to do if the LED is not lit on my Trane Controller?
    • G
      Gregory BoydAug 17, 2025
      If the LED on your Trane Controller is not lit, it indicates that the power is OFF or there is a malfunction. Try cycling the power to resolve the issue.
  • M
    mercedes41Aug 19, 2025
    What does it mean if the LED is not lit on my Trane Controller?
    • C
      cruznicoleAug 20, 2025
      If the LED is not lit on your Trane Controller, it means that the controller isn't detecting communication. Cycle the power to try and reestablish communication.
  • B
    Barbara GloverAug 22, 2025
    Why is my Trane Controller showing a solid red light?
    • L
      Lucas WellsAug 22, 2025
      A solid red light on your Trane Controller, when powered, indicates low power or a malfunction. If it's due to low power, it could be undervoltage. If it's a malfunction, try unpowering and then repowering the unit to restore normal operation.
  • P
    Paul ClarkAug 25, 2025
    Why does the TX LED constantly blink on my Trane Tracer UC400?
    • A
      Ashley CampbellAug 26, 2025
      The TX LED on your Trane Controller constantly blinks as it continually searches for devices to communicate with. To troubleshoot this, determine if a device, such as a Tracer SC or BACnet device, is trying to communicate with the controller and if it is capable of doing so. Also, verify if the communication status is consistently down and check the polarity and baud rate.
  • Q
    qsmithAug 28, 2025
    What does it mean if the LED is not lit on my Trane Tracer UC400 Controller relay output?
    • S
      shannon47Aug 28, 2025
      If the LED is not lit, it indicates that a relay output is de-energized or there is no power to the board. Try cycling the power to reestablish communication.
  • M
    Matthew HernandezAug 30, 2025
    How to prevent UC400 Trane Tracer UC400 Controller from going into boot mode?
    • C
      Charles KleinAug 30, 2025
      The controller is placed into boot mode if the service pin is held in when power is applied. Avoid holding the service pin during power-up to prevent this.
  • T
    Toni EvansSep 2, 2025
    Why is the TX LED not lit on my Trane Tracer UC400 Controller?
    • J
      Jennifer MitchellSep 2, 2025
      The TX LED not being lit indicates that the Trane controller is not detecting communication. To resolve this, cycle the power to reestablish communication.
  • A
    Alexandria JonesSep 5, 2025
    What to do if the Marquee LED is not lit on Trane Tracer UC400 Controller?
    • T
      Tommy Anderson DDSSep 5, 2025
      If the Marquee LED is not lit, it indicates that the power is OFF or there is a malfunction. Try cycling the power to resolve the issue.
  • W
    Wayne PhillipsSep 8, 2025
    How to fix a solid red Marquee LED on a Trane Tracer UC400 Controller?
    • J
      Jocelyn HayesSep 8, 2025
      A solid red Marquee LED on your Trane controller indicates low power, possibly due to under voltage, or a microprocessor malfunction. If it is a malfunction, un-power and then re-power the unit to bring it back to normal operation.
  • B
    Brandi CrawfordSep 12, 2025
    What to do if Binary outputs LED not lit on Trane Controller?
    • R
      rodriguezchristopherSep 12, 2025
      If the binary outputs LED is not lit, this indicates that a relay output is de-energized or there is no power to the board. Cycle the power to reestablish communication.

Summary

BACnet Protocol

BACnet Testing Laboratory (BTL) Certification

Details the controller's compliance with BACnet standards and supported equipment.

Device Connections

Typical Applications and Terminations

Binary Inputs Configuration

Explains the function and configuration of binary inputs like Occupancy and Condensate Overflow.

Analog Inputs Configuration

Details configurations for analog inputs like Space Temperature and Setpoint.

UC400 Wiring Diagrams

UC400-B Wiring Diagrams

Wiring Installation

Power Supply Requirements

Details transformer recommendations and essential wiring guidelines for proper operation.

LED Description, Activities, and Troubleshooting

Sequence of Operation

CO2-Based Demand Controlled Ventilation (DCV)

Explains the DCV sequence and how CO2 levels affect OA damper control.

Unit Protection Strategies

Covers built-in strategies like Smart Reset, Freeze Avoidance, and Fan Status monitoring.

Output Testing

Operational Causes and Diagnostics

Configuration and Maintenance

Controller Configuration and Setup

Guides on loading application code, choosing configurations, and setting parameters.

Settings for CO2-Based Demand Controlled Ventilation

Calculating OA Damper and CO2 Setpoints

Provides methods to determine OA damper and CO2 setpoints based on ASHRAE standards.

Trane Tracer UC400 Specifications

General IconGeneral
MountingDIN Rail
Operating Temperature-40°F to 158°F (-40°C to 70°C)
Enclosure RatingIP20
Controller TypeProgrammable
Communication ProtocolBACnet MS/TP
Power Supply24 VAC
Power Consumption10 VA
Humidity Range5% to 90% RH non-condensing
Supply Voltage24 VAC/VDC

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