BACnet Troubleshooting
Network Guide 109
CHAPTER 6
BACNET TROUBLESHOOTING
You can use this Troubleshooting Guide to help detect and correct issues that you may
encounter.
Table 27: Troubleshooting ECB Device Symptoms
Symptom Possible Cause Solution
Controller is powered
but does not turn on
Fuse has blown (for
24V controllers)
Disconnect the power. Check the fuse integrity. Reconnect the power.
Power supply polarity Verify that consistent polarity is maintained between all controllers and the trans-
former. Ensure that the COM terminal of each controller is connected to the same
terminal on the secondary side of the transformer. See Power Supply Require-
ments for 24V Controllers on page 41.
The device does not
have power / poor-
quality power (for 24V
controllers)
Verify that the transformer used is powerful enough to supply all controllers. See
Power Supply Requirements for 24V Controllers on page 41.
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