Advanced Thermostat Operations
31
ENV-VST-C - Operation / Reference Guide
Changing the Security Code
You can change the security code for the thermostat to a new four-digit code. If you change the security code, store the
new code in a safe location where you can access it if you ever forget it. If you forget your new code and need to have it
reset to a known value, you can reset the code through the NI Master.
Perform the following steps to change the security code.
1. From the Main screen, press Mode/Select to access the Thermostat Mode screen.
2. Use the navigation buttons to select Settings, and press Mode/Select. The Settings screen appears.
3. Use the navigation buttons to select Advanced Settings. Press Mode/Select to access the Security Code screen.
4. Enter the security code, and select Enter to access the User Preferences screen. See the Entering the Security Code
on page30 for more information.
5. Use the navigation buttons to highlight More, and press Mode/Select to access the second User Preferences screen.
6. On the second User Preferences screen, use the navigation buttons to highlight More, and press Mode/Select to
access the third User Preferences screen.
7. Use the navigation buttons to highlight Change Security Code, and press Mode/Select to access the Change
Security Code screen (FIG.34).
8. Use the navigation buttons to scroll through the numbers until you reach the first digit in the code, and press Mode/
Select to move to the next digit in the code.
9. Repeat the previous step until you have entered the full four-digit code.
10. Press Mode/Select while Enter is selected to accept the code change. If you want to cancel, use the navigation
buttons to select Cancel, and press Mode/Select.
FIG. 34 Change Security Code screen