Orion System VCC-X Controller - Manual (Page 81)

TROUBLESHOOTING
VCC-X Operator Interface SD 81
VCC-X Outputs Force
Outputs Force
Outputs Force settings are available for testing or troubleshooting the
system. These Force settings can only be accessed and programmed
from the Modular Service Tool.
CAUTION: The Outputs Force settings should only be
applied by qualifi ed service personnel.
Serious damage to the HVAC unit could
result from improper use of these Outputs
Force settings.
To access the Outputs Force settings, simply press the
- TEST> button on the Modular Service Tool. You will then see
the Unit ID Screen.
Enter Unit Address
Then Press Enter
Selected Unit #_1
Press Down
Enter the unit ID of the VCC-X Controller you wish to access and
press
. Once communication is established, the *00* mes-
sage will go away. Then press <

> . You will then see the screen
shown below. Press to save entered data and press
<  >
to scroll through the screens.
NOTE: If the *00* remains, it indicates a communication
failure to the controller.
NOTE: The Outputs Force settings are only available for the
VCC-X Controller. They are not supported for the
VAV/Zone Controllers or other Add-on controllers.
Outputs Force
Para Blocks
Save / Load / Copy
Place the cursor on Outputs Force and press to access the
Outputs Force Screen.
Supply Fan Override
Auto
Use < Or > To Change
The fi rst Outputs Force Screen allows the AHU fan relay to be set
for Auto, Force On, or Force Off. The default setting is Auto. After
you complete all troubleshooting or testing procedures, all relays
should be changed back to this setting. The Force On setting will
force the relay to the ON (energized) position. The Force Off selec-
tion will force the relay to the OFF (de-energized) position.
The next screen displays the Relay Overrides for Relay 2. After
pressing
to save any changes, press <  > to have the
next relay displayed. All 23 Relay Override Screens (including the
AHU fan relay) are available by pressing
<

> after each setting is
saved by pressing .
Relay Overrides
Relay 2 Override
Auto
Use < Or > To Change
After the screen for relay 23 is displayed, the fi rst Analog Output
Override Screen
will be displayed.
Analog Output 1 Screen
Main Fan VFD
Override Volts: -1.0
[-1.0 = Auto]
The default setting for normal operation is -1.0 volts. Voltages
between 0 to 10.0 are valid entries. Press
after making
a setting change and then press <

> and the next Analog Output
Override Screen will be displayed.
Analog Output 2 Screen
Economizer
Override Volts: -1.0
[-1.0=Auto]
The default setting for normal operation is -1.0 volts. Voltages
between 0 to 10.0 are valid entries. Press
after making
a setting change and then press <

> and the next Analog Output
Override Screen will be displayed.
Analog Output 3 Screen
Modulating Heat
Override %...: -10%
[-10 = Auto]
The default setting for normal operation is -10 %. Percentages
between 0 to 100 are valid entries. Press
after making
a setting change and then press <

> and the next Analog Output
Override Screen will be displayed.