AERCO ProtoNode FPC-N34 & FPC-N35 User Manual
APPENDIX H: BCM and BMM Fault Codes For Modulex E8 Controller
Page
94
of
108
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, NY 10913
OMM-0107_0B
03/07/2017
Ph.: 800-526-0288
GF-150
Appendix H-2: BMM Fault Code Table
The table below lists the fault codes and troubleshooting tips associated with the BMM.
Table H-2: BMM Fault Code Table
Code
Description
Effect
Correction
Reset
1
High Limit (STB)
Thermostat activated
All burners turned
OFF and Pump ON
at maximum speed.
Check FlowSensor thermal
connection to boiler.
MANUAL - push
reset switch when
temperature goes
below limit.
2
Low Gas Pressure
All burners turned
OFF.
Check gas pressure or gas
pressure switch.
AUTOMATIC -
when gas
pressure switch
closes.
4
No flame detected at
burner start
Burner control
lockout.
Check flame rod or
combustion.
MANUAL - push
reset switch or
cycle power.
5
Flame loss during
run.
Ignition retry.
Check combustion and
wiring.
MANUAL - push
reset switch or
cycle power.
6
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.
10
Internal Failure
Ignition is inhibited.
Contact Factory for new
BCM.
MANUAL - cycle
the power.
11
Flame signal
detected before
ignition.
Ignition is inhibited.
Disconnect flame rod wire
from BMM. If problem
goes away change flame
rod and/or wire. If problem
does not go away change
BMM.
MANUAL - push
reset switch or
cycle power.
12
FlowSensor fault.
All burners turned
OFF.
Check flow sensor or
wiring.
AUTOMATIC
13
Aux Sensor fault
The boiler will
operate from the
FlowSensor without
the AuxSensor.
Check aux sensor or
wiring.
AUTOMATIC
14
Return Sensor fault
All burners turned
OFF.
Check return sensor or
wiring.
AUTOMATIC