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Controller LEDs
Figure 11. BACnet IP LEDs
Table 9.
LED activities and troubleshooting tips
LED Name
Activities
TX blinks green.
RX blinks yellow.
Link and IMC
LED is not lit.
Shows solid green when
the LED has been
Service
28
Indication and Troubleshooting Tips
Blinks at the data transfer rate when the unit transfers data
to other devices on the link.
Blinks at the data transfer rate when the unit receives data
from other devices on the link.
• ON solid yellow: indicates there is reverse polarity.
Indicates that the controller is not detecting
communication.
• Not lit: cycle the power to reestablish communication.
pressed.
LED not lit.
Indicates controller is operating normally.
Notes
TX LED: Regardless of connectivity
or not, this LED will constantly blink
as it continually looks for devices to
communicate to.
LED not lit:
Determine if, for example, a Tracer
SC or BACnet device is trying to talk
to the controller or if it is capable of
talking to the controller. Also
determine if the communication
status shows down all of the time.
In addition, check polarity and baud
rate.
When the Symbio 210 is placed into
boot mode, the system will not run
any applications such as trending,
scheduling, and TGP2 runtime. The
controller is placed into boot mode
if the service pin is held in when
power is applied. In boot mode, the
controller is non-operational and is
waiting for a new main application
to be downloaded.
BAS-SVX084A-EN
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Table of Contents
Troubleshooting
