Carrier VVT Zone - Serial Number; Replacing the VVT Zone Controllers Battery

VVT Zone Controller 49
If Run LED shows...
And Error LED shows...
2 flashes per second
Status is...
On Exec halted after frequent system
errors, due to:
• Controller halted
• Program memory corrupted
• Address conflicts - duplicate
MS/TP MAC addresses
• One or more programs
stopped
5 flashes per second On Exec start-up aborted, Boot is
running
5 flashes per second Off Firmware transfer in progress,
Boot is running
7 flashes per second 7 flashes per second,
alternating with
Run
Ten second recovery period after
brownout LED
14 flashes per second 14 flashes per second,
alternating with
Run
Brownout
LED
On On Failure. Try the following solutions:
• Turn the VVT Zone Controller
off, then on.
• Download memory to the VVT
Zone Controller.
• Replace the VVT Zone
Controller.
Serial number
If you need the VVT Zone Controller's serial number when troubleshooting, the number is on:
• a sticker on the back of the main controller board
• a Module Status report (modstat) from your user interface
Replacing the VVT Zone Controller's battery
The VVT Zone Controller's 10-year Lithium CR2032 battery provides a minimum of 10,000 hours of data
retention during power outages.
If the VVT Zone Controller experiences a power outage and the control program stops functioning, replace the
battery.
1 Remove the VVT Zone Controller's cover.
2 Remove the battery from the controller, making note of the battery's polarity.
3 Insert the new battery, matching the battery's polarity with the polarity indicated on the controller's cover.
4 Replace the VVT Zone Controller's cover.
5 Download the VVT Zone Controller.