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Trane XR203
Programmable Thermostat
TCONT203AS42MA
Installation and User Guide
ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES
IMPORTANT — This Document is customer property and is to remain with this unit.
These instructions do not cover all variations in systems or provide for every possible contingency to be met in connection with
the installation. Should further information be desired or should particular problems arise which are not covered sufficiently
for the purchaser's purposes, the matter should be referred to your installing dealer or local distributor.
Pub No. 18-HD50D1-1A-EN
Part No. 37-7768003
December 2018

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Summary of Contents for Trane XR203

  • Page 1 Trane XR203 Programmable Thermostat TCONT203AS42MA Installation and User Guide ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES IMPORTANT — This Document is customer property and is to remain with this unit. These instructions do not cover all variations in systems or provide for every possible contingency to be met in connection with the installation.
  • Page 2: Table Of Contents

    Installation and User Guide Contents Safety ................2 1 or 2 Stage Cooling with TEM 6 VS Gas Furnace 1 Stage Cooling with GAT2, GAM2 & TEM3, 4 Product Specifications ........... 3 2 Stage heat Pump with GAM5B General Information ............3 1 Stage Heat Pump with GAF2-S Overview ..............
  • Page 3: Product Specifications

    Trane XR203 Programmable Thermostat Product Specifications SPECIFICATION DESCRIPTION Product Models TCONT203 Product XR 203 Size 3-3/4” x 6” x 1-1/8” (HxWxD) Configurations Heat Pump, Heat/Cool, Dual Fuel, Dual Fuel Low Unrestricted Mode Only Maximum Number of Stages 4 Stages Heat, 2 Stages Cooling Operating Temperature 32°F to 105°F (0 to +41°C) / 90% RH Non Condensing...
  • Page 4: Mounting

    Installation and User Guide FIGURE 1. PLACEMENT OF THE 203 Record color and terminal marking of each wire. Disconnect the wires from the existing thermostat being careful not to allow them to fall back into the wall. Correct Incorrect Natural heat Ceiling Fan dissipation Remove the existing thermostat from the wall.
  • Page 5: Wiring Diagrams

    Trane XR203 Programmable Thermostat Wiring Diagrams 1 or 2 Stage Heat Pump with TAM7/TAM9 (24V Mode) Thermostat Indoor Unit Outdoor Unit Y/Y1 NOTES: 1) Wire third party condensate over ow switches between Y of the thermostat and Y1 of the air ow control board...
  • Page 6: Stage Cooling With Gaf2-S

    Installation and User Guide Cooling with GAF2-S Thermostat Indoor Unit Outdoor Unit NOTES: 1) Wire third party condensate over ow switches between Y of the thermostat and Y1 of the air ow control board 2) X2 is required to energize aux heat during defrost 1 or 2 Stage Cooling with SV92 Furnace Thermostat...
  • Page 7: Or 2 Stage Heat Pump With S9V2 Furnace

    Trane XR203 Programmable Thermostat 1 or 2 Stage Heat Pump with S9V2 Furnace Thermostat Indoor Unit Outdoor Unit Y/Y1 NOTES: 1) Wire third party condensate over ow switches between Y of the thermostat and Y1 of the air ow control board...
  • Page 8: Or 2 Stage Heat/Cool Package With Variable Speed Blower

    Installation and User Guide 1 or 2 Stage Heat/Cool Package with Variable Speed Blower Thermostat Indoor Unit NOTES: 1) Wire third party condensate over ow switches between Y of the thermostat and Y1 of the air ow control board 2) X2 is required to energize aux heat during defrost 1 or 2 Stage Heat Pump Package with Variable Speed Blower Thermostat...
  • Page 9: Stage Heat Pump With Non Variable Speed Blower

    Trane XR203 Programmable Thermostat Heat Pump Package Unit with Non Variable Speed Blower Thermostat Indoor Unit W2/X2 NOTES: 1) Wire third party condensate over ow switches between Y of the thermostat and Y1 of the air ow control board 2) X2 is required to energize aux heat...
  • Page 10: Or 2 Stage Cooling With Tem 6 Vs Gas Furnace

    Installation and User Guide 1 or 2 Stage Cooling with TEM 6 or Variable Speed Gas Furnace Thermostat Indoor Unit Outdoor Unit Y/Y1 NOTES: 1) Wire third party condensate over ow switches between Y of the thermostat and Y1 of the air ow control board 2) X2 is required to energize aux heat during defrost Cooling with GAT2, GAM2 &...
  • Page 11: Stage Heat Pump With Gam5B

    Trane XR203 Programmable Thermostat 2 Stage Heat Pump with GAM5B Thermostat Indoor Unit Outdoor Unit Y/Y1 NOTES: 1) Wire third party condensate over ow switches between Y of the thermostat and Y1 of the air ow control board 2) X2 is required to energize aux heat...
  • Page 12: Stage Heat Pump With Gat2, Gam2, Tem3, Tem4

    Installation and User Guide Heat Pump with GAT2, GAM2, TEM3, TEM4 Thermostat Indoor Unit Outdoor Unit Y/Y1 NOTES: 1) Wire third party condensate over ow switches between Y of the thermostat and Y1 of the air ow control board 2) X2 is required to energize aux heat during defrost 1 or 2 Stage Heat Pump with GAM5A OR TAM4 OR GAF2-36M Thermostat...
  • Page 13 Trane XR203 Programmable Thermostat Cooling with GAF2-S Thermostat Indoor Unit Outdoor Unit NOTES: 1) Wire third party condensate over ow switches between Y of the thermostat and Y1 of the air ow control board 2) X2 is required to energize aux heat during defrost Pub.
  • Page 14: Installer Menu

    Installation and User Guide Installer Menu To prevent changes that may affect system performance, this thermostat has an INSTALLER MENU and a USER MENU. The INSTALLER MENU provides access to every option, while the USER MENU provides access to items that will not affect system performance.
  • Page 15: Test Modes

    Trane XR203 Programmable Thermostat TEST MODES Auxiliary System ( only for heat pumps with auxiliary) Turn on power to the system. Press the System button to select the Aux position. Press to adjust thermostat setting to 1° above room Fan Operation temperature.
  • Page 16: Thermostat Overview

    Installation and User Guide Thermostat Overview Before you begin using your thermostat, you should be familiar with its features, display and the location/operation of the thermostat buttons and switches. THERMOSTAT BUTTONS AND SWITCHES THE DISPLAY Fan Button Next (Menu button) is used to navigate within a menu Hold a permanent temperature or press again to cancel Set the correct time, access the schedule and customize thermostat settings hold (return to programmed schedule)
  • Page 17: User Menu

    Trane XR203 Programmable Thermostat User Menu To customize thermostat settings, press the Menu button from the home screen. Use the buttons to highlight Settings and press Next. Use Next and Back to navigate through menu items. Press to change the setting.
  • Page 18: Scheduling

    Installation and User Guide Scheduling Energy Saving Factory Schedule This thermostat is programmed with the energy saving settings shown in the table below for all days of the week P1/WAKE P2/LEAVE P3/RETURN P4/SLEEP Heating Schedule 6:00 AM - 70°F 8:00 AM - 62°F 5:00 PM - 70°F 10:00 PM - 62°F Cooling Schedule...
  • Page 19: Troubleshooting

    Trane XR203 Programmable Thermostat Troubleshooting SYMPTOM POSSIBLE CAUSE CORRECTIVE ACTION 1.) Blown fuse or tripped circuit breaker 1.) Replace fuse or reset breaker No Heat/ 2.) Furnace power switch to OFF No Cool/ 3.) Furnace blower compartment door 2.) Turn switch to ON...
  • Page 20 The manufacturer has a policy of continuous product and product data improvement and it reserves the right to change design and specifications without notice. Representative-only illustrations included in this document. 08/2018...

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