AERCO ProtoNode Gateway Rev 3 (with external LEDs) - Manual (Page 123)

AERCO ProtoNode Gateway
User Manual
OMM-0080_0H AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 123 of 126
GF-129 Ph.: 800-526-0288 11/06/2014
Table F-2: BMM Fault Code Table (Cont.)
Code Description Effect Correction Reset
14 Return Sensor fault
All burners
turned OFF.
Check return sensor or wiring. AUTOMATIC
15
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.
16
Boiler Pipe is
frozen. FlowSensor
temperature is
36°F or less.
Ignition is
inhibited.
Pump runs for
5 min at max
speed.
Carefully defrost boiler.
AUTOMATIC - when
FlowSensor is greater
than 41°F.
20
Flame signal
detected after
burner is OFF.
Ignition is
inhibited.
Disconnect gas valve wire from
BMM. If failure goes away,
check wiring or change BMM.
If failure remains check or
change gas valve.
MANUAL - push reset
switch or cycle
power.
22
No air flow at
burner after fan
started for 30
seconds.
Ignition retry
after 60
second delay
and failure
remains until
we have a
successful
burner
operation.
If fan is stopped, check supply
voltage and fan wiring. If OK
try another fan. If still not
working change the BMM.
If fan is not stopped, check the
exhaust gas outlet for
blockage. If OK then check
the air pressure switch wiring.
If still not working try another
air pressure switch. If still not
working, change the BMM.
AUTOMATIC/
MANUAL
23
The air pressure
switch doesn't
switch off.
Ignition is
inhibited.
Disconnect the air proving
switch. If problem goes away
install a new switch. If not,
check the wiring. If wiring OK
then change BMM.
AUTOMATIC