Troubleshooting
VAV Zone II Controllers
CARRIER CORPORATION ©2019
Installation and Start-up Guide
All rights reserved
66
If Run LED shows...
And Error LED shows...
Status is...
5 flashes per second
Off
Firmware transfer in progress, Boot is running
7 flashes per second
7 flashes per second,
alternating with
Run
LED
Ten second recovery period after brownout
14 flashes per second
14 flashes per second,
alternating with
Run
LED
Brownout
On
On
Failure. Try the following solutions:
Turn the VAV Zone II off, then on.
Download memory to the VAV Zone II.
Replace the VAV Zone II.
NOTE
If you resolve the issue but the
Error
LED does not turn off, cycle power to the controller.
To get the serial number
If you need the VAV Zone II's serial number when troubleshooting, the number is on a Module Status report
(Modstat) under
Core
(or
Main
)
board hardware
To obtain a modstat in the i-Vu® interface:
1
Select the VAV Zone II in the navigation tree.
2
Right-click and select
Module Status
.
To restore factory defaults
CAUTION
This erases all archived information and user-configuration settings. You will have to reconfigure
all custom settings. It is recommended to restore the factory defaults only under the guidance of Carrier Control
Systems Support.
To erase volatile memory data and restore factory default configuration settings:
1
Pull the screw terminal connector from the controller's power terminals labeled
Gnd
and
24 Vac
. Make sure
the address switches are not set to 0, 0.
Summary of Contents for VAV Zone II
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