Aerco MODULEX EXT 321 User Manual

MODULEX EXT 321, 481, 641, 802, 962, 1123 BOILERS
Installation, Operation & Maintenance Manual
Page 120 of 146 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0087_0F
07/13/15 Phone: 800-526-0288 GF-143
Table 6-4: BMM Fault Codes (Continued)
CODE
DESCRIPTION
EFFECT
CORRECTION
RESET
E 24
Fan speed out of
control: It
doesn't reach
pre-purge speed
within 30
seconds.
Ignition retry
after 60
second delay
and failure
remains until
we have a
successful
burner
operation.
Check fan wiring. AUTOMATIC/MANUAL
E 26
Fan speed out of
control: It
doesn't stop
within 30
seconds after
turned OFF.
Ignition is
inhibited.
Check fan wiring. AUTOMATIC
E 27
Air flow failure
during ignition.
Restart pre-
purge timer.
The failure
remains until
we have a
successful
burner
operation.
Check fan and wiring.
Check air proving switch
and wiring.
AUTOMATIC
E 30
Settings
corrupted.
Ignition is
inhibited.
Pump runs for
5 min at max
speed.
Re-program the settings.
Contact factory.
MANUAL - cycle the
power or send reset
message.
E 32
Line voltage too
low (<96 VAC).
Wait for
proper line
voltage (>102
VAC).
Check input voltage. Try
another BMM.
AUTOMATIC
E 40
Low water flow.
Low water flow
switch activated.
Burners
turned OFF.
Check water flow or
check switch.
AUTOMATIC

Aerco MODULEX EXT 321 Specifications

General

Brand	Aerco
Model	MODULEX EXT 321
Category	Boiler
Language	English