Rheem RETST700SYS
Rheem EcoNet Smart Thermostat
Instruction Manual
1. Introduction
The Rheem EcoNet Smart Thermostat is a WiFi-enabled device designed to provide advanced control over your home's heating, cooling, and water heating systems. It integrates seamlessly with compatible Rheem equipment to optimize efficiency and enhance comfort. This manual provides essential information for the setup, operation, and maintenance of your EcoNet Smart Thermostat.

Figure 1: Front view of the Rheem EcoNet Smart Thermostat, showing its sleek black design and digital display.
2. Setup and Installation
Proper installation is crucial for the optimal performance of your EcoNet Smart Thermostat. It is recommended that installation be performed by a qualified HVAC professional.
2.1 Wiring
The thermostat operates on a 24-volt system. Ensure power is disconnected before handling any wiring. Refer to the wiring diagram provided with your specific HVAC or water heating unit for correct connections. The thermostat connects to the R, C, S1, S2, E1, E2 terminals on the mounting plate.

Figure 2: Rear view of the thermostat and its mounting plate, showing the wiring terminals.
2.2 Mounting
Secure the mounting plate to the wall using the provided screws and anchors. Ensure the plate is level before attaching the thermostat unit. Gently push the thermostat onto the mounting plate until it clicks into place.

Figure 3: The Rheem EcoNet Smart Thermostat packaged with its essential mounting hardware.
2.3 Wi-Fi Connectivity
To utilize smart features and remote access, connect your thermostat to your home Wi-Fi network. Download the official Rheem EcoNet app on your smartphone or tablet prior to initiating the connection process. Follow the on-screen prompts on the thermostat and within the app to complete the Wi-Fi setup.
3. Operating Instructions
The EcoNet Smart Thermostat features an intuitive touchscreen interface for easy operation.
3.1 Temperature Adjustment
Adjust the desired temperature by pressing the + or - icons on the touchscreen display. The current temperature and setpoint will be clearly visible.
3.2 Operating Modes
The thermostat supports various operating modes, including:
- Heat: Activates the heating system to reach the set temperature.
- Cool: Activates the cooling system to reach the set temperature.
- Auto: Automatically switches between heating and cooling to maintain the desired temperature range.
- Off: Disables heating and cooling functions.
3.3 Scheduling
Program custom schedules to automatically adjust temperatures based on your daily routine. This feature helps optimize energy consumption. Detailed scheduling instructions are available within the thermostat's menu and the EcoNet mobile application.
3.4 Remote Access and Voice Control
Once connected to Wi-Fi, you can control your thermostat remotely using the Rheem EcoNet mobile app. The thermostat also supports voice control through compatible smart home platforms like Amazon Alexa, allowing for convenient hands-free adjustments.

Figure 4: The thermostat display indicating "Away" mode, demonstrating its ability to show different operational states.
4. Maintenance
The Rheem EcoNet Smart Thermostat requires minimal maintenance to ensure continued performance.
4.1 Cleaning
Wipe the touchscreen and exterior surfaces with a soft, damp cloth. Avoid using abrasive cleaners or solvents, as these can damage the display or finish.
4.2 Power Supply
The thermostat is powered by your HVAC system (24 Volts AC/DC) and does not require batteries.
5. Troubleshooting
If you encounter issues with your EcoNet Smart Thermostat, consider the following common solutions:
- No Power/Blank Screen: Ensure the power to your HVAC system is on and the thermostat is securely seated on its mounting plate. Verify wiring connections.
- Wi-Fi Connectivity Issues: Check your home Wi-Fi network status. Try restarting your Wi-Fi router. If issues persist, attempt to re-connect the thermostat to Wi-Fi through the EcoNet app.
- System Not Responding: If the thermostat is not controlling your HVAC or water heating system, check for any error codes displayed on the thermostat or within the EcoNet app. Ensure the correct operating mode is selected.
- Inaccurate Temperature Readings: Ensure the thermostat is not exposed to direct sunlight, drafts, or heat sources that could affect its temperature sensor.
For persistent issues, consult the detailed troubleshooting guide available on the Rheem support website or contact Rheem customer service.
6. Specifications
| Feature | Detail |
|---|---|
| Brand | Rheem |
| Model Name | EcoNet |
| Model Number | RETST700SYS |
| Color | Black |
| Connectivity Technology | Wi-Fi |
| Power Source | AC/DC |
| Voltage | 24 Volts |
| Screen Size | 4.3 Inches |
| Display Type | LCD or LED |
| Item Dimensions (LxWxH) | 4.3 x 2 x 3 inches |
| Item Weight | 10 ounces |
| Special Features | Remote Access, Alerts, Energy Saving Mode |
7. Warranty and Support
7.1 Warranty Information
For detailed warranty terms and conditions, please refer to the documentation included with your product packaging or visit the official Rheem website. Warranty coverage typically applies to manufacturing defects and may vary based on region and purchase date.
7.2 Customer Support
If you require further assistance, technical support, or have questions regarding your Rheem EcoNet Smart Thermostat, please contact Rheem customer service. Contact information can typically be found on the Rheem official website or in your product's original documentation.
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