Trane Tracer UC400 - LED Description, Activities, and Troubleshooting; Controller LED Indicators and Status

36
BAS-SVX48H-EN
LED Description, Activities, and Troubleshooting
LEDs are used to provide controller serviceability. The UC400/UC400–B has the following LEDs
located on the front. Refer to the legend in the second image in the figure below for LED
placements.
• Marquee LED.
• Communication status LEDs and IMC status LEDs.
• Service button LED.
• Three (3) binary output relay and nine (9) TRIAC status LEDs.
Figure 16. LEDs for UC400 and UC400-B
SERVI
C
E
IM
C LINK
RX
TX
BO2BO1 BO9BO8BO7BO6BO5BO3 BO4
Marquee LED
There are 15 LEDs on the front of the UC400 controller. The following table provides a description
of LED activities, an indication or troubleshooting tip for each, and any relative notes.