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UNT-SVX07A-EN 65
Maintenance
troubleshooting
Troubleshooting Tracer ZN010, ZN510 & ZN520
Figure M-T-1. The Tracer ZN010 board
Red SERVICE LED
Green STATUS LED
Yellow COMM LED
Red SERVICE LED
During normal operation, the LED is off
continuously when power
is applied to the controller.
If the LED is on continuously, even when
power is applied to the controller means
that someone is pressing the SERVICE
button or that the controller has failed.
If the LED flashes once every second, use
Rover™, Trane’s service tool, to restore
the unit to normal operation. Refer to the
Rover™ product literature for more
information.
Note: If the Service button is held down
for more than 15 seconds on the Tracer
ZN520 controller, it will uninstall itself
from the ICS communication network and
shut down all unit operation.
Green STATUS LED
During normal operation, the LED is on
continuously.
If the LED blinks once, the controller is in
Manual output test mode.
If the LED blinks twice the controller is in
Manual output test mode, with one or
more diagnostics present.
indicates whether
the controller is
powered on (24
VAC supplied)
indicates is
service is needed
If the LED blinks (
1
/4 second on,
1
/4 second
off for 10 seconds) the controller is in the
“Wink” mode.
Note: The “wink” feature allows the
identification of a particular controller.
When sending a request from a device,
such as Rover™, the controller will
“wink” to indicate it received the signal.
If the LED is off, either the power is off, an
abnormal condition is present or the
TEST button is pressed.
Yellow COMM LED
If the LED is off continuously, the
controller is not detecting any
communication. This is normal for units in
standalone applications.
If the LED blinks, the controller detects
communication.
If the LED is on continuously, this indicates
an abnormal condition.
Manual Output Test
The purpose of the manual output test
sequence is to verify output and end
device operation. Use the manual output
test to:
indicates if
communication is
functioning