RT310RF : Operating Keys and Buttons (1.6.1) .
There are few user controls for the RT310RF, making this thermostat very easy to operate. These controls are shown below, along with a description of each of their functions. The temperature displayed on the LCD is the current room temperature.
Turns on the LCD Backlight.
Turn On / Off the Frost Mode.
The Increase Button.
The Decrease Button.
The RF Test and Pairing Button. Press once for RF Test Mode.
Press and hold for 3 Seconds to Enter / Exit Pairing Mode
Press all three buttons for 3 Seconds to enter Installer Mode.