Bcm (Boiler Communications Module) Fault Codes - Watts AERCO Modulex EXT Commercial Series User Manual

Modulex EXT Commercial Series Boilers User Manual
CHAPTER 7: Troubleshooting

7.1.2 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.
Flow sensor temp. is
E 17
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
flow detected.
E 58
OMM-0095_0H
GF-139
EFFECT
Ignition is
inhibited. Pump
runs for 5 min at
max speed.
All burners turned
OFF and Pump
ON at maximum
speed.
All burners turned
OFF and pump
ON at maximum
speed.
Ignition is
inhibited. Pump
runs for 5 min at
max speed.
Ignition is
inhibited.
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
Phone: 800-526-0288
CORRECTION
Carefully AUTOMATIC - when Flow
defrost boiler. sensor is greater than 41°F.
AUTOMATIC - when Δ-
Check the
temperature < Water Δ-
system
installation. Temp Protection.
Check Flow AUTOMATIC - when Flow
Sensor or sensor < 176°F.
system pump.
Re-program
the settings. MANUAL - push reset
Contact switch or cycle power.
factory.
Close request MANUAL - push reset
input for switch or cycle power.
manual
operation.
RESET
Page 115 of 144
09/15/2017