Troubleshooting
VVT Bypass II Controller
CARRIER CORPORATION ©2019
Installation and Start-up Guide
All rights reserved
36
If Run LED shows...
And Error LED shows...
Status is...
On
On
Failure. Try the following solutions:
•
Turn the VVT Bypass II off, then on.
•
Format the VVT Bypass II.
•
Download memory to the VVT Bypass II.
•
Replace the VVT Bypass II.
To get the serial number
If you need the VVT Bypass 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 VVT Bypass 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.
2
Short the
Format Short pins
jumper’s pins and maintain the short for steps 3 and 4.
3
Insert the power screw terminal connector into the VVT Bypass II's power terminals.
4
Continue to short the jumper until the
Error
LED flashes three times in sync with the
Run
LED.
5
Remove the short.
Summary of Contents for VVT Bypass II
Page 51: ......
