Trane TCONT800 Series Thermostat Operation Manual

The Trane TCONT800 Series Touch Screen Programmable Comfort Control is a versatile thermostat for 24 VAC heating and cooling systems, including heat pumps. It features a large, clear backlit LCD display for easy viewing of temperature, time, and status, with menu-driven programming supporting up to four schedule periods per day. Energy Star compliant defaults promote up to 33% energy savings, while Adaptive Intelligent Recovery ensures target temperatures are reached on time. Below are the key specifications and operation instructions.

Key Specifications

• Type: Touch screen programmable comfort control for 24 VAC systems
• Compatibility:
  • Heating, cooling, heat pumps (with compressor/backup heat lockout using outdoor sensor on select models)
  • Supports remote indoor sensors, outdoor temperature sensors, dehumidification control, humidifiers, UV lamps, and furnace filters (select models)
  • Fan settings: Auto, On, Circ (runs ~35% of period)
• Power:
  • Three AAA alkaline batteries (low battery indicator flashes one month before depletion)
• Temperature Range: Programmable setpoints for heat (e.g., 62°F/16.5°C to 70°F/21°C) and cool (e.g., 78°F/25.5°C to 85°F/29.5°C) based on Energy Star defaults; dehumidification setpoint adjustable (select models); advanced features allow up to 3°F below temperature setpoint in high humidity
• Dimensions: Standard wall-mount design
• Features:
  • Large, clear backlit LCD showing current temperature, set temperature, time, day of the week, fan setting, system position, inside temperature, humidity (select models), and outdoor temperature (select models)
  • Menu-driven programming; up to four schedule periods per day (Wake, Leave, Return, Sleep); hold options (Temporary, Permanent, Vacation)
  • Reminder timers for filters, humidifier pads, UV lamps; screen lock (partial or full)
  • Recovery mode for gradual temperature adjustment; Energy Star compliant with default settings
• Compliance: U.S. Registered Trademark; US Pat. #6,595,430 and other patents pending; Copyright © 2005 American Standard Inc.; Limited Five-Year Warranty for low voltage room comfort controls

Operation Instructions

Initial Setup

1. Install Batteries: Remove from wallplate; insert three AAA alkaline batteries (observe polarity). Snap back onto wallplate.
2. Set the Current Time: Press Clock key, use Up/Down arrows to adjust time, then press Done. The current day should be set automatically; if not, use Advanced Settings to adjust.
3. Program Schedule: Press Sched key, then Edit to select days (e.g., Mon-Fri), periods (Wake, Leave, Return, Sleep), times, heat/cool setpoints, and fan settings. Press Done to save. Repeat for other days. Energy Star defaults: Wake (6:00 AM, Heat 70°F/21°C, Cool 78°F/25.5°C); Leave (8:00 AM, Heat 62°F/16.5°C, Cool 85°F/29.5°C); Return (6:00 PM, Heat 70°F/21°C, Cool 78°F/25.5°C); Sleep (10:00 PM, Heat 62°F/16.5°C, Cool 82°F/28°C); Fan Auto for all.
4. Set System Mode: Press System key to select Off, Heat, Cool, Auto, or Em Heat (for heat pumps).

Home Screen Navigation

1. Display Elements: Inside temperature, set temperature, current time/day, system mode (e.g., Heat, Cool, Auto), fan setting (Auto/On/Circ), schedule status (Following Schedule or Hold), clock, day, icons for Recovery, Auxiliary Heat, Low Battery.
2. Key Functions: SYSTEM (Heat/Cool/Off/Auto), FAN (Auto/On/Circ), SET SCHEDULE (edit programs), HOLD (temporary/permanent override), SET CLOCK/DAY (time/day), RUN (exit programming).
3. Adjustments: Up/down arrows for temperature; hold for permanent changes.
4. Backlight: Activates on key press; auto-off after inactivity.

Scheduling and Presets

1. Edit Schedule: Press SET SCHEDULE, select day (Mon-Fri or Sat-Sun), set time and temperature for each period (Wake/Leave/Return/Sleep) using arrows and NEXT button, press DONE to save.
2. Cancel Period: In SET SCHEDULE > Period > Cancel Period.
3. Presets: Pre-set Energy Star schedules (e.g., Heat Mon-Fri: Wake 6:00 AM/70°F, Leave 8:00 AM/62°F, Return 5:00 PM/70°F, Sleep 10:00 PM/62°F; similar for Cool and weekends).
4. Holds: Press HOLD for temporary override (until next period) or permanent (hold again to resume); Vacation mode for multi-day holds.
5. Recovery: Adaptive Intelligent Recovery (AIR) starts system early to reach setpoint exactly at schedule time; displays "Recovery".

Settings Screen

1. Fan: Press FAN for Auto (runs only with system) or On (continuous).
2. System: Press SYSTEM for Heat (heating only), Cool (cooling only), Off (both off), Auto (automatic heat/cool selection).
3. Auto Changeover: In Auto mode, heat/cool settings must differ by at least 3°F; deadband adjustable in advanced setup.
4. Hold: Press HOLD, adjust temperature; resumes schedule when pressed again.
5. Clock: Press SET CLOCK/DAY for time/day adjustments.

Advanced Features

1. Temporary Override: Press HOLD, adjust temperature; reverts at next period.
2. Permanent Hold: Overrides all periods until manually canceled.
3. Compressor Protection: Automatic delay before restart to prevent damage.
4. Adaptive Intelligent Recovery (AIR): Learns heating/cooling time; displays "In Recovery" when pre-heating/cooling.
5. Auto Changeover: Automatically switches between Heat and Cool based on indoor temperature.
6. Auxiliary Heat: Indicator for heat pumps; activates when needed.

Troubleshooting

• Display Blank: Check circuit breaker; ensure power switch at HVAC is on; verify C-wire connection; replace batteries.
  
• Heating/Cooling Not Responding: Set SYSTEM to Heat (temperature > inside temp) or Cool (temperature < inside temp); check for "Wait" (compressor protection); ensure schedule not in energy-saving mode.
  
• Temperature Won't Drop Below Setpoint: System may be in Hold/override; check continuous running due to Auto fan or schedule; manually shut off, then reset.
  
• Fan Not Running: Set to On if in Auto during Off mode.
  
• "Cool On" But No Cooling: Wait 5 minutes for compressor protection; check outdoor temp >50°F.
  
• "Heat On" But No Heat: Verify fuel supply (gas/electric).
  
• Clock/Time Incorrect: Reset using SET CLOCK/DAY.
  
• Low Battery: Replace immediately when warning flashes.
  
• General: Reset by removing batteries for 1 minute if issues persist; contact HVAC contractor, www.trane.com, or 1-800-500-2041.

Installation Instructions

Warning: Professional installation required. Do not operate cooling below 50°F (10°C) outdoor temperature to prevent compressor damage. For full installation, consult a trained technician.

Battery Replacement

1. Pull thermostat from wallplate.
   
2. Press and pull battery holder to remove.
   
3. Insert fresh AA alkaline batteries (observe polarity).
   
4. Replace holder and snap thermostat back on wallplate.
   
5. Install when low battery warning appears (flashes ~2 months before depletion).

Wiring Diagrams

Wiring diagrams are not included in the owner's manual. Professional wiring for 24 VAC systems is required. Contact your HVAC contractor for installation details, including connections for heat/cool, heat pump with auxiliary heat, and fan control. Ensure C-wire is connected for power.

Configuration Options

1. Set Time/Day: Press SET CLOCK/DAY; adjust with arrows.
   
2. Program Schedules: Press SET SCHEDULE; set periods for weekdays/weekends.
   
3. Fan/System: Press FAN/SYSTEM for modes.
   
4. Overrides: Press HOLD for temporary/permanent.
   
5. Reset: Reload Energy Star preset if needed.
   
6. Assistance: Contact 1-800-500-2041 or www.trane.com; note model/date code.

Calculation Tool

Estimate monthly energy savings from Energy Star scheduling (assumes 1% savings per °F setback; 30 days/month).