Need help?Do you have a question about the Venstar T3900 and is the answer not in the manual?
General| Display | Color Touchscreen |
|---|---|
| Wi-Fi Connectivity | Yes |
| Weight | 0.5 lbs |
| Type | Programmable Thermostat |
| Compatibility | HVAC systems |
| Programmability | 7-Day programmable |
| Stages | 2 Heat / 2 Cool |
| Connectivity | Wi-Fi |
| Humidity Control | Yes |
| Display Type | LCD |
Details the meaning of various icons, indicators, and information shown on the thermostat screen.
Covers setting the clock, day, and choosing the operating mode (Heat, Cool, Auto).
Instructions on adjusting temperature setpoints and controlling fan operation.
How to check outdoor temperatures and indoor humidity readings.
Step-by-step process for safely removing the existing thermostat unit.
Chart mapping old thermostat terminals to new thermostat connectors.
Diagram and explanation of terminals on the thermostat backplate.
Configuration guide for dip switches based on HVAC system type.
Visual examples of wiring for various conventional and heat pump systems.
Procedure for testing thermostat outputs and HVAC equipment functionality.
Customizing display brightness, night dimming, and system language.
Setting preferences for how text scrolls and is displayed on the screen.
Configuring energy-saving vacation modes and emergency heat for heat pumps.
Connecting and managing Wi-Fi, Z-Wave, and ZigBee wireless accessories.
Tracking fan runtime and setting up filter replacement alerts.
Monitoring operating hours for heating, cooling, UV lamps, and humidifiers.
Creating custom daily schedules with multiple temperature and mode periods.
Selecting programming type (7-day, 1-day, 5/2-day) and available operating modes.
Restricting temperature setpoints and limiting HVAC cycles per hour for efficiency.
Defining temperature or time differentials before heating/cooling stages activate.
Configuring fan schedules and the comfort recovery feature for timely temperature adjustments.
Managing humidity levels, setpoints, and output polarity for humidifiers/dehumidifiers.
Setting outdoor temperature limits for heat pump operation and configuring dual fuel systems.
Controlling a programmable auxiliary output based on time or temperature sources.
Managing energy-saving free cooling, exhaust venting, and dry contact operations.
Restoring the thermostat to its original factory settings, clearing all custom configurations.
Preventing unauthorized changes by locking or unlocking the thermostat's keypad.
To Next Page
