Orion System One Condenser Head Pressure Module - Manual (Page 19)

Technical Guide
One Condenser Head Pressure Module
19
Troubleshooting
LED Diagnostics
“PWR” LED: When the One Condenser Head Pressure Module is
powered up, the PWR LED (located below the address switches) should
light up and stay on continuously. If it does not light up, check to be
sure that the power wiring is connected to the board, the connections
are tight, and the VCM-X Series Controller or VCM-X E-BUS Series
Controller is powered. If after making all these checks, the PWR LED
does not light up, the module is probably defective.
“COMM” LED: When the One Condenser Head Pressure Module is
powered up while in Stand Alone Mode, the COMM LED does not light
up. When the module is connected to the VCM-X Series Controller or
VCM-X E-BUS Series Controller, the COMM LED should light up, in-
dicating Communications. Each time Communications are detected, this
LED should continuously blink on and off, for a half second. This LED
should never stop checking for a Communications signal. If it does not
light up, check to be sure that the power wiring is connected to the board,
the connections are tight, and the VCM-X Series Controller or VCM-X
E-BUS Series Controller is powered. If after making all these checks,
the COMM LED does not light up, the board is probably defective.
“STAT” LED: As previously described, when the module is fi rst pow-
ered up, the STAT LED will b
link out the number of installed sensors
“ALARM” LED: As previously described, this LED will blink on and
off to indicate alarms and diagnostics.
Other Checks
NOTE: The One Condenser Head Pressure Module contains
no user-serviceable parts. Contact qualifi ed technical
personnel if your module is not operating correctly.