Bacnet Troubleshooting - Distech Controls ECL/ECB-PTU Series User Manual

CHAPTER 6
BAC T
NET
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
Controller is powered Fuse has blown (for
but does not turn on 24V controllers)
Power supply polarity
The device does not
have power / poor-
quality power (for 24V
controllers)
Network Guide
ROUBLESHOOTING
Solution
Disconnect the power. Check the fuse integrity. Reconnect the power.
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
ments for 24V Controllers
Verify that the transformer used is powerful enough to supply all controllers. See
Power Supply Requirements for 24V Controllers

BACnet Troubleshooting

Power Supply Require-
on page 41.
on page 41.
109