06/05/13 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 • Ph: 800-526- 0288 Page 108 of 112
Modulex E8 Controller and BCM
Operations and Maintenance Manual
17
Boiler Pipe is frozen.
FlowSensor temp. is
36°F or less.
inhibited. Pump
runs for 5 min at
Carefully
defrost boiler
AUTOMATIC - when
FlowSensor is greater than
41°F.
18
Maximum Δ-
temperature protection.
Flow temperature -
Return Temperature >
Water
Δ-Temp
All burners turned
OFF and Pump
ON at maximum
speed.
Check the
system
installation.
AUTOMATIC - when Δ-
temperature < Water Δ-
Temp Protection.
19
temperature.
FlowSensor
OFF and Pump
ON at maximum
Check Flow
Sensor or
system pump
AUTOMATIC - when
FlowSensor < 176°F.
38
Settings Corrupted
inhibited. Pump
runs for 5 min at
the settings.
Contact
MANUAL - push reset
switch or cycle power.
50
Internal Failure
Ignition is
inhibited.
Factory for
MANUAL - cycle the power.
58
FlowSensor fault.
All burners turned
OFF.
sensor or
AUTOMATIC
97
Standby. No remote
control detected and
Request input is open.
Ignition is
inhibited.
input for
Manual
MANUAL - push reset
switch or cycle power.
98
No BMM detected.
Ignition is not
possible.
BMM eBus
MANUAL - push reset
switch or cycle power.
10.2.3 BMM (Burner Management Module) Fault Codes
The table below lists the fault codes and troubleshooting tips associated with the BMM.
Table 10-4: BMM Fault Codes