Tracer® Uc400-B Controller; Led Activity - Trane BCHE Installation, Operation And Maintenance Manual

Diagnostics and Troubleshooting
Tracer® UC400-B Controller

LED Activity

LED activity, an indication or troubleshooting tip for each,
and any related notes.
LED Activities
Name
Marquee Shows solid green
LED when the unit is
powered and no
alarm exists
Shows blinking
green during a
device reset or
firmware download
Shows solid red
when the unit is
powered, but
represents low
power or a
malfunction
Shows blinking red
when an alarm or
fault exists
LED not lit
Link and TX blinks green
IMC
RX blinks yellow
LED is not lit
Service Shows solid green
when the LED has
been pressed
LED not lit
Binary B01 Shows solid yellow
through
B09
LED not lit
132
Indication and Troubleshooting Tips
Indicates normal operation
Indicates normal operation
If low power; could be under voltage or the
microprocessor has malfunction. Measure for the expected
value range. For more information, refer to Installation,
Operation, and Maintenance: Tracer® UC400-B
Programmable Controller (BAS-SVX20*-EN, or the most
recent version).
If malfunction; un-power and then re-power unit to bring
the unit back up to normal operation.
An alarm or fault condition will occur if the value for a given
point is invalid or outside the configured limits for the point.
Alarm and fault conditions vary, and they can be configured
by the programmer.
Indicates power is OFF or there is a malfunctionOFF or
malfunction; cycle the power. For more information, refer
to Installation, Operation, and Maintenance: Tracer®
UC400-B Programmable Controller (BAS-SVX20*-EN, or
the most recent version).
Blinks at the data transfer rate when the unit transfers data
to other devices on the link
Blinks at the data transfer rate when the unit receives data
from other devices on the link
ON solid yellow; indicates there is reverse polarity
Indicates that the controller is not detecting communication
Not lit; cycle the power to reestablish communication
Indicates controller is operating normally
Indicates a corresponding binary output has been
commanded ON
Relay coil; indicates that a command has been made to
energize
TRIAC; indicates that a command has been made to turn
ON
Indicates that a relay output is de-energized or no power to
the board
Not lit; cycle power to reestablish communication
There are 15 LEDs on the front of the Tracer® UC400-B
controller. The following table provides a description of LED
activity.
Notes
When powering the UC400-B and expansion module,
the Marquee LED will blink RED, blink GREEN
(indicating activated and controller/expansion module
are communicating), and then stay GREEN
CONTINUOSLY (indicating normal power operation).
TX LED: Regardless of connectivity or not, this LED will
constantly blink as it continually looks for devices to
communicate to.
LED not lit:
Determine if, for example, a Tracer® SC or BACnet
device is trying to talk to the controller or if it is capable
of talking to the controller. Also determine if the
communication status shows down all of the time. In
addition, check polarity and baud rate.For more
information, refer to Installation, Operation, and
Maintenance: Tracer® UC400-B Programmable
Controller (BAS-SVX20*-EN, or the most recent
version).
When the UC400-B is placed into boot mode, the
system will not run any applications such as trending,
scheduling, and TGP2 runtime. The controller will be
placed into boot mode if the service pin is held in when
power is applied. In boot mode, the controller is non-
operational and is waiting for a new main application to
be downloaded.
If the user is currently powering the UC400-B from a
USB port, the Led lights will turn ON. However, the
binary outputs will not be activated.Commanded ON;
As an example of commanded ON, a command could
be a manual command such as an override or a
command could be from TGP2 based on a list of
conditions that are met telling these outputs to turn ON.
LED not lit:
Did the user command it to be ON? If yes, see the
Marquee LED at the top of this table. For more
information, refer to Installation, Operation, and
Maintenance: Tracer® UC400-B Programmable
Controller(BAS-SVX20*-EN).
BCX-SVX002A-EN