Distech Controls ECB-VAV, User Manual

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118 Network Guide
Table 35: STATUS LED Fault Condition Interpretation for ECL Devices
The STATUS LED is always OFF (Not
applicable to ECB-PTU Series) No anomaly Normal operation.
The STATUS LED is always ON (ECB
PTU Series only) No anomaly Normal operation.
Table 34: STATUS LED Interpretation for Normal Operation with ECB Devices
Device STATUS LED blink patterns Status Description
Device STATUS LED blink patterns -
every 2 seconds (highest priority
shown first) Possible Cause Corrective Action
Long blink continuous:
(1s On, 1s Off, continuous)
The controller is unconfigured Commission the controller
Long Long Long blink
(800ms On, 300ms Off, 800ms On,
300ms Off, 800ms On)
The controller is offline Set the controller Online
Long Short Short Short blink
(800ms On, 300ms Off, 150ms On,
300ms Off, 150ms On, 300ms Off,
150ms On)
The controller is in bypass
mode Set the controller Online
Short Short Long blink
(150ms On, 300ms Off, 150ms On,
300ms Off, 800 ms On)
Poor-quality power; The device
has browned-out (for 24V con-
trollers) The voltage at the 24VAC/DC and 24VCOM terminals
has gone below the device's acceptable limit during
power up.
Fast blink 12x:
(80ms On, 80ms Off, 12x)
Wink The wink function is used to identify a device.
Table 36: Verify that the Following Recommendations have been Carried Out Before Calling Technical Support
Recommendation Description
Properly terminate the BACnet MS/
TP data bus EOL terminations must be enabled / installed at either end of the data bus only. See TP/FT 10
Free Topology Network Termination on page 55.
Connect no more than five devices to
a power supply transformer (for 24V
controllers) LonWorks devices require good power quality. See TP/FT 10 Free Topology Network Termi-
nation on page 55.