AAON Orion BACnet General Controller - Troubleshooting; LED Diagnostics

TROUBLESHOOTING
14 BACnet
®
General Controller Technical Guide
LED Diagnostics & Troubleshooting
BGC LEDs
TheBGCisequippedwithLEDsthatcanbeusedtoverifyoperation
andperformtroubleshooting.ThereareLEDsforcommunication,
operation modes, and diagnostic codes. The BGC Controller has 25
LEDs—9usedforoperation&status,8usedforrelays,and8used
for binary inputs. See Figure 5, page 15 forthe LED locations.
TheLEDsassociated with theseinputsandoutputs allow youto
seewhatisactivewithoutusingavoltmeter.TheLEDsandtheir
uses are as follows:
Operation LEDs - Factory Troubleshooting
POWER-ThisgreenLEDwilllightuptoindicatethat24VAC
power has been applied to the controller.
APP HB-ThisgreenLEDwilllightupandblinkcontinuouslyto
indicate the application software is working properly.
OS HB-ThisgreenLEDwilllightupandblinkcontinuouslyto
indicate the operating system is working properly.
WDOG-ThisgreenLEDwilllightupandstaylittoindicatethe
operating system is working properly.
Diagnostic LEDs
STATUS 1-ThisredLEDisadiagnosticblinkcodeLED.Ifthe
softwareisrunning,thisLEDshouldblinkatarateof1blinkevery
10 seconds.
STATUS 2-ThisredLEDisadiagnosticblinkcodeLED.Under
normaloperation,itshouldnotbeblinking.IftheLEDisblinking
non-stopalongwithStatus2LED,thecontrollerisresettingfac-
tory defaults.
Communication LEDs
EBUS-ThisyellowLEDwillblinktosignalE-BUScommunica-
tions.
BACNET -ThisyellowLEDwilllightupandblinkcontinuously
to indicate BACnet communications.
Relay LEDs
RLY1 - RLY8-ThesegreenLEDswilllightupwhentherelaysare
enabled and will stay lit as long as they are active.
Binary Input LEDs
BIN1 - BIN8 -ThesegreenLEDswilllightupwheneachcontact
is closed.
POWER LED Operation
WhentheBGCisrstpoweredup,thePOWERLEDshouldlight
up and stay on continuously. If it does not light up, check to be sure
that you have 24 VAC connected to the controller, that the wiring
connections are tight, and that they are wired for the correct polar-
ity. The 24 VAC power must be connected so that all ground wires
remaincommon.Ifaftermakingallthesechecks,thePOWERLED
does not light up, please contact AAON Controls Technical Support
for assistance.