Installation and Maintenance Manual

14 VAV-SVX07A-EN

VAV Start Up/Check Out Procedure

LED Description and Behavior

There are 15 LEDs on the front of the Tracer UC400 controller. Figure 1, p. 14 shows the locations

of each LED and describes the behavior of each.

Tracer UC400 Controller Module

LED Description and Operation

There are 15 LEDs on the front of the Tracer UC400 controller. Figure 1, p. 14 shows the locations

of each LED and a description of its behavior in specific instances.

Marquee LED

• Shows solid green when the Tracer UC400 controller is powered and operating normally.

• Shows solid red when the Tracer UC400 controller is powered, but represents low power or

a malfunction.

• Blinks red when an alarm exists.

LINK

•The TX LED blinks green at the data transfer rate when the Tracer UC400 controller transfers

data to other devices on the link.

•The RX LED blinks yellow at the data transfer rate when the Tracer UC400 controller receives

data from other devices on the link.

IMC

•The TX LED blinks green at the data transfer rate when the Tracer UC400 controller transfer data

to other devices on the IMC bus.

•The RX LED blinks yellow at the data transfer rate when the Tracer UC400 controller receives

data from other devices on the IMC bus.

Service

Shows solid green when pressed.

BO1 to BO9

Shows solid green when corresponding binary output is on.

Figure 1. LED locations

SERVI

LINK

BO2 9OB1OBBO8BO7BO6BO5BO3 BO4

Marquee LED