Trane CVHE Installation, Operation And Maintenance Manual page 38

Installation: Controls
Figure 25. LED locations
Table 11. LED behavior
LED
Powered. If the Marquee LED is green solid, the
UC800 is powered and no problems exist.
Low power or malfunction. If the Marquee LED is
Marquee LED red solid, the UC800 is powered, but there are
problems present.
Alarm. The Marquee LED blinks Red when an alarm
exists.
The TX LED blinks green at the data transfer rate
when the UC800 transfers data to other devices on
LINK, MBUS, the link.
IMC
The Rx LED blinks yellow at the data transfer rate
when the UC800 receives data from other devices on
the link.
The LINK LED is solid green if the Ethernet link is
connected and communicating.
Ethernet Link
The ACT LED blinks yellow at the data transfer rate
when data flow is active on the link.
The Service LED is solid green when pressed. For
Service
qualified service technicians only. Do not use.
Important: Maintain at least 6 in. (16 cm) between low-
voltage (<30V) and high voltage circuits.
Failure to do so could result in electrical
noise that could distort the signals carried
by the low-voltage wiring, including IPC.
38
Marquee LED
LINK MBUS IMC
TX
RX
LINK
SERVICE
ACT
UC800 Status
CVHE-SVX02H-EN