Introduction
The Venstar T1000FS is a 1-day programmable digital thermostat designed for efficient temperature control in your home or office. It features a clear digital display that simultaneously shows heating and cooling set points along with the current room temperature. This thermostat is hardwired and operates on 24 volts, making it a reliable choice for various HVAC systems. Its user-friendly design includes push-button controls and the capability for remote operation, offering convenience and flexibility.
Setup and Installation
The Venstar T1000FS thermostat is designed for straightforward wall-mount installation. It comes with a mounting bracket to facilitate easy attachment to drywall or other surfaces. Ensure power is off at the circuit breaker before beginning installation.

Figure 1: Rear view of the Venstar T1000FS thermostat, illustrating the wiring terminals for connection to your HVAC system. Proper wiring is crucial for correct operation.

Figure 2: Front view of the Venstar T1000FS thermostat with the outer cover removed, revealing the internal circuitry and display area. This view is relevant during the initial mounting and wiring process.
Wiring Instructions:
This thermostat requires a 24-volt hardwired connection. Refer to your HVAC system's wiring diagram and the labels on the thermostat's terminal block for correct connections. Common terminals include R (power), C (common), Y (cooling), W (heating), and G (fan). Always ensure wires are securely fastened to prevent loose connections.
Mounting:
Attach the mounting bracket to the wall using appropriate screws. Once wiring is complete and secured, carefully align the thermostat with the bracket and snap it into place. Ensure it is firmly seated.
Operating Instructions
The Venstar T1000FS thermostat features a digital display and push-button controls for easy operation. It supports single-day programming and auto changeover between heating and cooling modes.

Figure 3: Front view of the Venstar T1000FS thermostat, showcasing its digital display with backlight and the primary control buttons (Mode, Fan, Up/Down arrows).
Display Information:
- The digital display shows the current room temperature prominently.
- Heating and cooling set points are displayed simultaneously, allowing for quick reference.
- A backlight ensures visibility in various lighting conditions.
Button Functions:
- Mode Button: Cycles through system modes such as Heat, Cool, Auto, and Off.
- Fan Button: Controls fan operation (e.g., Auto, On).
- Up/Down Arrows: Adjust the temperature set points.
Programming:
As a single-day programmable thermostat, the T1000FS allows you to set a consistent schedule for heating and cooling for a 24-hour period. Consult the detailed programming guide that came with your thermostat for step-by-step instructions on setting your desired temperature schedule.
Maintenance
The Venstar T1000FS thermostat requires minimal maintenance. Since it is hardwired, no batteries are required for operation.
Cleaning:
To clean the thermostat, gently wipe the exterior with a soft, damp cloth. Do not use abrasive cleaners, solvents, or spray cleaners directly onto the unit, as this may damage the display or internal components.
Regular Checks:
Periodically ensure that the thermostat is securely mounted to the wall and that there are no obstructions around it that could affect accurate temperature readings.
Troubleshooting
If you encounter issues with your Venstar T1000FS thermostat, consider the following common troubleshooting steps:
- No Display/Power: Ensure the circuit breaker supplying power to your HVAC system and thermostat is on. Verify all wiring connections are secure at the thermostat and the HVAC unit.
- Incorrect Temperature Readings: Ensure the thermostat is not exposed to direct sunlight, drafts, or heat sources (e.g., lamps, appliances) that could affect its temperature sensor.
- System Not Responding: Check that the system mode (Heat, Cool, Auto) is correctly selected. Verify that the temperature set point is above (for heating) or below (for cooling) the current room temperature to trigger the system.
- Fan Issues: If the fan is not operating as expected, check the fan mode setting (Auto/On).
For persistent issues or complex problems, it is recommended to contact a qualified HVAC technician or Venstar customer support.
Specifications
| Feature | Detail |
|---|---|
| Brand | Venstar |
| Model Number | Cab-T1000FS |
| Product Dimensions | 4.25 x 2.75 x 1.25 inches |
| Item Weight | 0.01 ounces |
| Power Source | Hardwire |
| Voltage | 24 Volts |
| Batteries Required? | No |
| Controller Type | Push Button, Remote |
| Special Features | Auto Changeover, Programmable |
| Temperature Control Type | Programmable |
| Connectivity Technology | Wi-Fi |
| Connectivity Protocol | Wi-Fi |
| Mounting Type | Wall Mount |
| Display Type | Digital |
| Backlight | Yes |
| Included Components | Mounting bracket |
Warranty and Support
For information regarding the warranty of your Venstar T1000FS thermostat, please refer to the warranty card included with your product packaging or visit the official Venstar website. For technical support, troubleshooting assistance beyond this manual, or to inquire about replacement parts, please contact Venstar customer service directly. Contact details can typically be found on the manufacturer's website or in the product documentation.





