AERCO Modbus Communications Manual - Manual (Page 93)

Appendix A
MODBUS
Communication GF-114
Status Messages & Equations USER MANUAL OMM-0035_0C
05/18/12 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 • Ph: 800-526-0288 Page 93 of 200
Table A-5: BCM (Boiler Communication Module) Fault Codes
CODE DESCRIPTION EFFECT CORRECTION RESET
17
Boiler Pipe is frozen.
FlowSensor temp. is
36°F or less.
Ignition is
inhibited. Pump
runs for 5 min
at max speed.
Carefully defrost
boiler
AUTOMATIC - when
FlowSensor is greater
than 41°F.
18
Maximum Δ-
temperature
protection. Flow
temperature - Return
Temperature > Water
Δ-Temp Protection +
50°F
All burners
turned OFF and
Pump ON at
maximum
speed.
Check the
system
installation.
AUTOMATIC - when Δ-
temperature < Water Δ-
Temp Protection.
19
High outlet
temperature.
FlowSensor
temperature > 203°F.
All burners
turned OFF and
Pump ON at
maximum
speed.
Check Flow
Sensor or
system pump
AUTOMATIC - when
FlowSensor < 176°F.
38 Settings Corrupted
Ignition is
inhibited. Pump
runs for 5 min
at max speed.
Re-program the
settings.
Contact Factory
MANUAL - push reset
switch or cycle power.
50 Internal Failure
Ignition is
inhibited.
Contact Factory
for new BCM.
MANUAL - cycle the
power.
58 FlowSensor fault.
All burners
turned OFF.
Check flow
sensor or wiring. AUTOMATIC
97
Standby. No remote
control detected and
Request input is
open.
Ignition is
inhibited.
Close Request
input for Manual
operation.
MANUAL - push reset
switch or cycle power.
98 No BMM detected.
Ignition is not
possible.
Check the BMM
eBus wiring.
MANUAL - push reset
switch or cycle power.