AERCO Modbus Communications Manual - Manual (Page 87)

AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, New York 10913 • Phone: 800-526-0288
GF-114
OMM-0035_0C
APPENDIX A: C-MORE BOILER CONTROLLER STATUS &
FAULT MESSAGES, CONVERSION EQUATIONS, BCM FAULT
CODES, BMM FAULT CODES, and I/O STATUS TABLES
Table A-1: Status And Fault Messages
DISPLAY MESSAGES DESCRIPTION
STATUS MESSAGES:
FAIL SAFE MODE
ACTIVATED
The system is running in the Constant Setpt mode due to loss of
the Remote signal or Outdoor Air sensor input.
NETWORK DISABLED
MODBUS LISTEN
“Forced Listen Only Mode” has been activated. All Modbus
commands
except “restart Communications Options” will be ignored. The
ACS will operate in the Fail Safe Mode.
OUTSIDE AIR TEMP
NOT CONNECTED
The Outdoor Air Temperature Sensor is not installed and
connected.
RETURN TEMP
NOT INSTALLED
The Boiler Return Temperature Sensor is not installed.
FAULT MESSAGES
OUTDOOR SENSOR
ERROR
The Outdoor Air Temperature Sensor signal is out of range.
HEADER SENSOR
ERROR
The Header Temperature Sensor signal is out of range or
disconnected.
RETURN SENSOR
ERROR
The Return Temperature Sensor signal is out of range.
INTERLOCK 1
ERROR
Interlock 1 input is open.
INTERLOCK 2
ERROR
Interlock 2 input is open.
4 – 20 mA INPUT
ERROR
The 4 – 20 mA Remote Input signal is lost.
MODBUS TIMEOUT
ERROR
The Modbus remote input information was not received within the
network timeout period.