Troubleshooting
VVT Zone II Controller
CARRIER CORPORATION ©2019
Installation and Start-up Guide
All rights reserved
61
If you have problems mounting, wiring, or addressing the VVT Zone II, contact Carrier Control Systems Support.
NOTE
To help you troubleshoot, obtain a Module Status (Modstat) from the controller and review the System Error
and Warning details.
LED's
The LED's on the VVT Zone II show the status of certain functions. Verify the LED patterns by cycling power to the
controller and noting the lights and flashes.
If this LED is on...
Status is...
Power
The VVT Zone II has power.
Rx
The VVT Zone II is receiving data from the network segment
Tx
The VVT Zone II is transmitting data over the network segment
DO#
The digital output is active
CW
The actuator motor is turning clockwise
CCW
The actuator motor is turning counterclockwise
The
Run
and
Error
LED's indicate controller and network status.
If Run LED shows...
And Error LED shows...
Status is...
1 flash per second
1 flash per second, alternating
with the
Run
LED
The controller files are archiving. Archive is
complete when
Error
LED stops flashing.
2 flashes per second
Off
Normal
2 flashes per second
2 flashes,
alternating with
Run
LED
Five minute auto-restart delay after system error
2 flashes per second
3 flashes,
then off
The controller has just been formatted
2 flashes per second
4 flashes, then pause
Two or more devices on this network have the
same network address
2 flashes per second
1 flash per second
The controller is alone on the network
2 flashes per second
On
Exec halted after frequent system errors, due to:
•
Controller halted
•
Program memory corrupted
•
One or more programs stopped
5 flashes per second
On
Exec start-up aborted, Boot is running
Troubleshooting
Summary of Contents for VVT Zone
Page 103: ......
