Troubleshooting; Led Operation - Trane Tracer ZN.520 Manual

CNT-SVX04A-EN

Troubleshooting

Troubleshooting

LED operation

Red service LED
Table 55 Red service LED activity
Red LED activity
LED is off continuously after
power is applied to the controller.
LED is on continuously, even
when power is first applied to the
controller.
LED flashes about once every
second.
Black service push button
The Service push button, located at the bottom center of the controller, can be
used to install the Tracer ZN.520 zone controller in a communication network.
Refer to the Rover service tool product literature for more information.
Warning! If the Service push button is held down for more than 15 seconds,
the Tracer ZN.520 zone controller will uninstall itself from the ICS
communication network and shut down all unit operation. This mode is
indicated by the red Service LED flashing once every second. See Table 56 on
page 88. Use Rover service tool to restore the unit to normal operation. Refer to
the Rover Installation, Operation, and Programming guide (EMTX-SVX01A-EN)
for more information.
Green status LED
The green LED normally indicates whether or not the controller is powered on
(24 VAC). The green LED is also used to indicate that the controller is in a
manual test mode or wink mode. Table 57 on page 88 describes the different
patterns.
Description
Normal operation.
Someone is pressing the Service push button or the
controller has failed.
Uninstall (normal controller mode). Use Rover service
tool to restore the unit to normal operation. Refer to
the Rover product literature for more information.
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