Introduction
The LUX TX1500E Smart Temp Programmable Thermostat is designed to provide efficient temperature control for most heating and cooling systems. This device allows for customized temperature scheduling, contributing to potential energy savings by optimizing heating and cooling cycles during peak and off-peak hours. It features a clear display, intuitive programming options, and a filter usage monitor for convenient maintenance.

Image: LUX TX1500E Smart Temp Programmable Thermostat product packaging. The image displays the thermostat's digital screen showing time (12:01 AM), current temperature (65 degrees HEAT), and a filter life indicator. Text on the packaging highlights features such as 5-1-1 programming, a large lighted display, LUX Speed Dial, graphical filter monitor, and relative humidity display. It also mentions energy savings of up to $150 per year.
Setup
Installation
Before beginning installation, ensure the power to your HVAC system is turned off at the circuit breaker to prevent electrical shock and damage to the unit. The TX1500E is compatible with most 24-volt heating and air-conditioning systems, including single-stage heating and cooling, heat pumps without auxiliary or emergency heat, central air, and Millivolt wall heaters/gas fireplaces. Carefully follow the wiring instructions provided in the full installation guide to connect the thermostat to your system. Once wired, mount the thermostat securely to the wall.
Battery Installation
The TX1500E requires batteries for operation. Refer to the full installation guide for specific battery type and placement instructions. Ensure batteries are inserted with correct polarity.
Operating Instructions
Display Features
The large, electroluminescent display provides clear information at a glance:
- Current Day and Time: Displays the day of the week and the current time.
- Temperature: Shows the current room temperature and the set temperature.
- Humidity Indicator: A simple push of the 'H' button on the front panel will display the relative humidity in the room.
- Filter Status: A graphical filter usage monitor indicates the remaining filter life.
Programming Schedules
The TX1500E offers flexible programming options:
- 5-1-1 Day Programming: Program different schedules for weekdays, Saturdays, and Sundays.
- Four Periods Per Day: Customize temperature settings for up to four distinct periods each day: morning, afternoon, evening, and night.
- Patented Speed Dial: Use the speed dial for quick and easy programming adjustments.
Special Programming
Store temporary programs for specific events such as long weekends, vacations, or holidays. This allows you to override your regular schedule without losing your saved settings.
Advanced Features
- Keyboard Lockout: This feature prevents unauthorized changes to settings, ideal for households with children or other users.
- Temperature Swing Setting: Configure the temperature differential (swing) to control how far the temperature can deviate from the set point before the system reactivates. This can reduce system cycling and improve efficiency.
- Anticipatory Programming: The thermostat can activate your HVAC system before a scheduled time to ensure the desired temperature is reached precisely when programmed.
Maintenance
Filter Monitoring
The integrated graphic filter usage monitor allows you to set filter usage limits from 0 to 180 days in 30-day increments, and also 365 days. The remaining filter life can be displayed in calendar days or as a percentage, alongside a graphical indicator. Regularly check and replace your air filter as indicated to maintain system efficiency and air quality.
Battery Replacement
When the battery indicator appears on the display, replace the batteries promptly to ensure continuous operation and prevent loss of programming. Refer to the installation guide for specific battery replacement procedures.
Troubleshooting
If you encounter issues with your thermostat, consider the following general troubleshooting steps:
- No Display/Power: Check battery installation and ensure they are fresh. Verify that the power to your HVAC system is on.
- Incorrect Temperature Readings: Ensure the thermostat is not exposed to direct sunlight, drafts, or heat sources that could affect its sensor.
- System Not Responding: Confirm that the thermostat is set to the correct mode (Heat/Cool) and that the set temperature is appropriate. Check wiring connections.
- Programming Issues: Review your programmed schedule to ensure settings are correct for the desired times and temperatures.
For more detailed troubleshooting, consult the complete product manual or contact customer support.
Specifications
| Brand | LUX |
| Model Number | TX1500E |
| Controller Type | Push Button |
| Special Feature | Programmable |
| Color | White |
| Specific Uses For Product | HVAC Systems |
| Voltage | 24 Volts |
| Display Type | Digital |
| Mounting Type | Wall Mount |
| Backlight | Yes |
| Batteries Required? | Yes |
| Product Dimensions | 1.25 x 8 x 10.5 inches |
| Item Weight | 1.6 ounces |
Warranty Information
The LUX TX1500E Smart Temp Programmable Thermostat comes with a 1-year warranty. Please retain your proof of purchase for warranty claims. For full details regarding warranty coverage and terms, refer to the documentation included with your product or visit the manufacturer's website.
Support
For additional support, detailed manuals, or to contact customer service, please visit the official LUX Products website:







