Table of Contents
Advertisement
Modulex Light Commericial Series
CHAPTER 7: Troubleshooting
BCM (Boiler Communications Module) Fault Codes
The table below lists the fault codes and troubleshooting tips associated with the BCM.
TABLE 7-3: BCM Fault Codes
CODE
DESCRIPTION
Boiler pipe is frozen.
E 17
Flow sensor temp. is
36°F or less.
Maximum Δ-
temperature protection.
Flow temperature -
E 18
Return Temperature >
Water Δ-Temp
Protection + 50°F
High outlet
temperature. Flow
E 19
sensor temperature >
203°F.
E 37
BCM: Internal fault
Settings corrupted by
E 38
electromagnetic
interference.
BCM: No remote
E 56
control detected
BCM: No BMM
E 57
detected
BCM: Sensor global
E 58
flow detected.
OMM-0087_J • GF-143 • 11/17/2020
EFFECT
CORRECTION
Ignition is
inhibited. Pump
Carefully
runs for 5 min at
defrost boiler.
max speed.
All burners turned
Check the
OFF and Pump
system
ON at maximum
installation.
speed.
All burners turned
Check Flow
OFF and pump
Sensor or
ON at maximum
system pump.
speed.
Ignition is
Re-program
inhibited. Pump
the settings.
runs for 5 min at
Contact
max speed.
factory.
Close request
Ignition is
input for
inhibited.
manual
operation.
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
RESET
AUTOMATIC - when Flow
sensor is greater than 41°F.
AUTOMATIC - when Δ-
temperature < Water Δ-
Temp Protection.
AUTOMATIC - when Flow
sensor < 176°F.
MANUAL - push reset
switch or cycle power.
MANUAL - push reset
switch or cycle power.
Page 121 of 150
Advertisement
Table of Contents
