On entering the menu, use the Touch Ring to scroll to the preferred option (OFF or ON), and confirm the choice using
the OK button. Use the Arrow key to return to the Menu Option display.
If the ST620 is operating in FROST mode the LCD will not indicate MANUAL or AUTO, but will
display both the room temperature and also the FROST mode indicator.
To turn off FROST mode, select the FROST menu and then by using the Touch Ring scroll to the OFF
setting. Press the OK key to confirm the setting.
SLEEP Function
The SLEEP mode allows the ST620 to conserve power by turning off the LCD display. Entering the
SLEEP menu allows you to activate this power saving feature from a 5 second run down timer:
Pressing the OK Key at any time within the 5 seconds will cause the ST620 to immediately go into
SLEEP mode, as will allowing the countdown to complete. Pressing the Arrow key will return the
ST620 to the Menu display mode.
Pressing the Touch Ring for 1 second will turn on the LCD backlight, and pressing the Touch Ring for 3 seconds will wake
the ST620 from SLEEP mode and restore the programmable thermostat to AUTO mode.
NOTE: The unit will not control the heating while in SLEEP mode.
ST620WBC INSTRUCTION MANUAL28
