Trane ReliaTel User Manual

ReliaTel™
Microprocessor Controls
November 2010 RT-SVD03G-EN
Diagnostic Manual

Trane ReliaTel Specifications

General

Temperature Control	Yes
Humidity Control	Yes
Compatibility	Trane HVAC systems
Category	Controller
Manufacturer	Trane
Series	ReliaTel
Application	Commercial HVAC
Functionality	System control, monitoring, and diagnostics
Integration	Compatible with Trane building automation systems

Summary

ReliaTel Refrigeration Module (RTRM)

RTRM Diagnostics

Details diagnostics and LED indicators for RTRM.

What the readings mean

Explains voltage readings for RTRM diagnostics.

ReliaTel Option Module (RTOM)

RTOM Inputs

Details the various inputs for the RTOM module.

ReliaTel Ventilation Module (RTVM)

RTVM Inputs

Details the various inputs for the RTVM module.

ReliaTel Dehumidification Module (RTDM)

RTDM Inputs

Details the various inputs for the RTDM module.

ReliaTel LED Functions

ReliaTel Refrigeration Module (RTRM)

Explains the LEDs on the RTRM module.

ReliaTel Options Module (RTOM)

Explains the LEDs on the RTOM module.

ReliaTel Ventilation Module (RTVM)

Explains the LEDs on the RTVM module.

ReliaTel Air Handling Module (RTAM)

Explains the LEDs on the RTAM module.

ReliaTel Test Mode

Service Test Mode

Explains how to activate and use the service test mode.

Auto-Cycle Test

Describes the auto-cycle test procedure.

Resistance Test

Explains how to select operating states using resistance.

Step Test

Describes the step test procedure for cycling through modes.

Thermostats and Sensors

Table 19. Thermostat and Sensor Descriptions

Table detailing various thermostat and sensor models.

Zone Sensor Module Testing

Mechanical Zone Sensor Module

Details testing procedures for mechanical zone sensors.

Temperature input

Explains how to read temperature input voltage and resistance.

Setpoint input

Explains how to read setpoint input voltage and resistance.

Mode Input

Explains how to read mode input voltage.

RTRM/RTOM (Temperature Inputs)

Outdoor Air Sensor, Discharge Air Sensor, Coil Temperature Sensor

Explains how to read temperature sensor voltages.

Direct Spark Ignition Control (Texas Instruments, 3-10 Ton Units only)

Table 33. Ignition Module Diagnostics

Table detailing ignition module diagnostic codes.

ReliaTel Hot Surface Ignition Control (12.5 - 50 Ton 1 Stage, 2 Stage, and Modulating Gas Heat)

Ignition Control Module Diagnostics

Details ignition module diagnostics and LED status.

Table 35. Ignition Module Diagnostics

Table detailing ignition module diagnostic codes.

Heat Pump Demand Defrost

Defrost Service Test

Explains the service test procedure for demand defrost.

Defrost Mode Operation

Explains the operational steps during defrost mode.

Diagnostic Information

Provides diagnostic information for demand defrost failures.

ReliaTel Economizer Operation & Inputs

ReliaTel Economizer Inputs

Lists the various inputs for ReliaTel economizers.

ReliaTel Economizer Control Actuator (LED Fault Code Info.)

Sensor Faults

Explains sensor fault conditions and associated LED codes.

ReliaTel Humidity Sensors

To Test Humidity Sensors

Explains the procedure for testing humidity sensors.

Space Pressure Control with Statitrac (27.5-50 Tons)

Failure and Override Modes of Operation

Explains failure and override modes for space pressure control.

ReliaTel Supply Air Tempering Control

Enable Supply Air Tempering

Explains how to enable the supply air tempering feature.

Sequence of Operation

Describes the sequence of operation for supply air tempering.

CO2 Sensor Connections (ReliaTel Units with Demand Controlled Ventilation)

RTEM w/ RTRM v8.0 and Later

Details RTEM operation with RTRM v8.0 and later.

CO2 Setpoints

Dehumidification with Hot Gas Reheat (3-25 Tons)

Sequence of Events

Single compressor units

Dual Compressor units

Modulating Dehumidification with Hot Gas Reheat (27.5-50 Tons)

Controls Overview

Low Ambient Mechanical Cooling Operation (3-25 Ton Units)

Evaporator Defrost Control (EDC) Function

ReliaTel Condenser Fan Control Logic

Condenser Fan Sequencing Control

Transformer Troubleshooting

Transformer Troubleshooting

High Pressure and Low Pressure Lockout Circuits

LPC Logic

LPC Sequence of Operation

LPC Operation for 27.5-50T Units with Modulating Reheat

Outdoor Air Flow Compensation for VAV Units

Set up

Operation for RTRM 7.0 and Earlier with RTEM or Any RTRM with Honeywell ECA

Operation for RTRM 8.0 and Later with RTEM