Trane TCONT401AN21MA Thermostat Operation Manual

The Trane TCONT401AN21MA (XR401) is a low-voltage comfort control thermostat for heating and cooling systems, including heat pumps. It features keypad controls for modes, fan, energy savings, and filter reminders, with automatic changeover and outdoor temperature calibration. Below are the key specifications and operation instructions.

Key Specifications

• Type: Low-voltage comfort control (XR401 model)
• Compatibility:
  • Heating, cooling, heat pumps (with Emergency Heat)
  • Trane systems; U.S.A./Canada use
• Power:
  • Low voltage; check fuse/breaker for display issues
• Temperature Range:
  • Setpoint adjustment via Energy Savings key
  • Outdoor calibration: +5 to -5°F (1/2° increments)
  • Setpoint Deadband: Configurable degrees between heat/cool
• Dimensions: Not specified
• Features:
  • Keypad controls: Mode (Heat/Em Heat/Cool/Auto/Off), Fan (Auto/Continuous), Filter/OD (reminder/outdoor display), Energy Savings (adjusts setpoints)
  • Filter Reminder: Flashes "FILTER/OD"; resettable timer
  • Auto Changeover: Switches heat/cool in Auto mode
  • Equipment Status: Shows when energized
  • User Setup: Filter timer, clock, deadband
• Compliance: Limited Warranty (Trane, Tyler, TX); parts by factory/authorized service

Operation Instructions

Initial Setup

1. Power On: Display shows room temperature.
2. Enter User Setup: Hold MODE + FAN; navigate with MODE (forward)/FAN (back).
3. Factory Defaults: Reset available; set filter timer, clock, deadband.
4. Calibrate Outdoor Temp: Adjust +5 to -5°F in 1/2° increments.
5. Set Mode: MODE for Heat/Em Heat/Cool/Auto/Off.
6. Set Fan: FAN for Auto/Continuous.

Home Screen Navigation

1. Display: Current mode with border; "FAN ON" for continuous; "FILTER/OD" flashing for reminder; equipment energized indicator.
2. Controls: MODE for modes; FAN for fan; FILTER/OD for outdoor display/reminder; Energy Savings for adjustments.
3. Outdoor Temp: Press FILTER/OD to view calibrated outdoor temp.
4. Filter Reminder: Press FILTER/OD twice to view days remaining.

Scheduling and Presets

1. Energy Savings Preset: Press Energy Savings; shifts to warmer (cool)/cooler (heat) for efficiency.
2. Filter Reminder: Preset days; flashes when expired; reset via FILTER/OD.
3. Auto Changeover: In Auto mode, presets switch based on deadband.

Settings Screen

1. Access: Hold MODE + FAN for User Setup; MODE/FAN to navigate.
2. Options: Filter timer (days remaining/reset); Outdoor temp calibration (±5°F); Setpoint Deadband (degrees); Clock setup.
3. Changes: Apply immediately; Done to save.

Advanced Features

1. Emergency Heat: MODE to Em Heat; bypasses compressor for aux heat.
2. Fan Continuous: FAN to Continuous; "FAN ON" displays.
3. Energy Savings: Adjusts setpoints for reduced use while maintaining comfort.
4. Auto Changeover: MODE to Auto; switches modes per deadband.

Troubleshooting

• Display Off: Check fuse/breaker, furnace switch, door panel.
  
• No Heat/Cool: Verify mode/setpoint; check connections.
  
• Filter/OD Flashing: Reset timer via FILTER/OD.
  
• Erratic Display: Cycle power; contact service.

Installation Instructions

Warning: Professional installation required. Contact Trane for service.

Pre-Installation

• Verify compatibility with Trane low-voltage systems.
  
• Check power supply (fuse/breaker).
  
• For heat pump, confirm Emergency Heat support.

Wiring Diagrams

Not detailed in owner's manual; professional wiring for 24 VAC systems.

Configuration Options

1. Hold MODE + FAN for User Setup.
   
2. Set filter timer, outdoor calibration, deadband, clock.
   
3. Apply changes; contact dealer for advanced.

Calculation Tool

Estimate monthly energy savings from Energy Savings mode (assumes 2°F shift, 0.5 kWh/hr saved; 30 days/month).