Entering And Exiting The Service Mode; Overriding Vavs - Trane VAV VV550 LonTalk Installation & Operation Manual

Entering and Exiting the Service Mode

Controllers must be online and in the service mode to receive an override. The service mode
disables control from VAV VV550 Controller and places Rover/Comm5 in command of the
controller. Controllers that are in the service mode appear in bold in the device tree on the left side
of your screen. More than one controller can be in the service mode at one time.
You can place a controller in the service mode manually or let Rover/Comm5 do so automatically
when you start an override. Controllers exit the service mode automatically 15 minutes after the
last override or when you manually release them.
To enter the service mode:
1. Connect to the Comm5 link and scan for devices.
2. In the device list on the left side of your screen, double-click the controller that you want to place
3. Click the Enter Service Mode button. While the controller is in the service mode, it appears
To exit the service mode, do one of the following:
•
•

Overriding VAVs

When you override a controller, Rover Comm5 automatically places the controller in the service
mode. The controller is automatically released from the service mode after 15 minutes or when you
click the Exit Service Mode button for the device. You can manually release overrides by selecting
the appropriate release command in the Override dialog box.
1. On the Tools menu, click Overrides.
2. Select override VAVs.
3. Click the units you want to override.
4. In the list of overrides, click the type of override you want to perform.
5. Click the Override button. The controller automatically enters the service mode and exits the
Saving VAV Program
Each VAV unit with a VAV VV550 Controller has been factory commissioned with a program that
can be saved to your hard drive.
This can be used to save the original program for a backup in case unit needs to be put back to
original specifications or to download into a VAV VV550 Controller that has like parameters that has
been corrupted.
1. Select the Configure button, and the Configuration screen will appear.
VAV-SVP01A-EN
in the service mode.
in bold in the device list.
Wait for 15 minutes (Rover Comm5 does not need to be online with the controller).
For each controller in the service mode, click the Exit Service Mode button.
service mode 15 minutes after receiving an override.
VAV VV550 Controller Programming and Operation
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