AERCO Modulex EXT 1530 - 3060 - Manual (Page 109)

MODULEX EXT 1530, 1912, 2295, 2677, 3060 BOILERS
Installation, Operation & Maintenance Manual
6.1.3 BCM (Boiler Communications Module) Fault Codes
The table below lists the fault codes and troubleshooting tips associated with the BCM.
Table 6-3: BCM Fault Codes
CODE DESCRIPTION EFFECT CORRECTION RESET
E 17
Boiler pipe is frozen.
Flow sensor temp. is
36°F or less.
Ignition is
inhibited. Pump
runs for 5 min at
max speed.
Carefully
defrost boiler.
AUTOMATIC - when Flow
sensor is greater than 41°F.
E 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.
E 19
High outlet
temperature. Flow
sensor temperature >
203°F.
All burners turned
OFF and pump
ON at maximum
speed.
Check Flow
Sensor or
system pump.
AUTOMATIC - when Flow
sensor < 176°F.
E 37 BCM: Internal fault
E 38
Settings corrupted by
electromagnetic
interference.
Ignition is
inhibited. Pump
runs for 5 min at
max speed.
Re-program
the settings.
Contact
factory.
MANUAL - push reset
switch or cycle power.
E 56 BCM: No remote
control detected
E 57 BCM: No BMM
detected
E 58
BCM: Sensor global
flow detected.
Ignition is
inhibited.
Close request
input for
manual
operation.
MANUAL - push reset
switch or cycle power.
OMM-0095_0E AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 109 of 138
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