AM Series Boilers and Water Heaters
CHAPTER 9 – OPERATION
Page
110
of
154
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, NY 10913
OMM-0100_0D
03/28/16
Ph.: 800-526-0288
GF-146
Blocking Error Messages
ERR#
DESCRIPTION
CHECKS
SOLUTIONS
Err 110
Flapper valve not open
error
a)
Check for any obstruction into the
exhaust system.
b)
Check if the fan is running.
c)
Check the flapper valve and its
control sensor.
a)
Remove the obstruction from flue exhaust.
b)
Replace the fan or the power control board.
c)
Replace the flapper valve or its control sensor.
Err 111
Flapper valve not closed
error
Check the flapper valve and its
control sensor.
Replace the flapper valve or its control sensor.
Err 112
Internal software error
-
Replace the power control board.
Err 113
Err 114
Too low water flow
Check water flow into the system
(parameter 1062), it
must be higher
than parameter 3035.
Increase the water flow into the system.
Check for any obstructions in the water system
inlets.
Err 115
Multiple burner master
failure
-
Reset via 3013 parameter.
Err 116
Multiple burner
communication failure.
Bus communication interrupted a -
burner is not working.
c)
Check for bus communication.
d)
Restore the burner that has its light off.
e)
Check parameter 3001 on each burner.
f)
Check parameter 3050 on each burner.
g)
Check S4 switch on each burner.
NO
CONN
Microprocessor is in
lockout
a)
Check if water pressure sensor
wires are in short circuit.
b)
Check if water flow meter wires
are in short circuit.
a)
If not in short circuit try to replace the water
pressure sensor (or disconnect it via 3000
menu).
b)
If not in short circuit try to replace the water flow
meter (or disconnect it via 3000 menu).
c)
If not any of the above try to replace the power
control board or the display.
9.21 Blocked Flue Pressure Switch
The AM Series units are equipped with a blocked flue pressure switch safety that shuts down
the unit when the flue exhaust vent pipe is blocked. If this pressure switch shuts off the unit (Loc
25), do not attempt to place the boiler in operation but rather, contact a qualified service agency
or technician able to reset the unit after checking for any potential dangerous situations.
WARNING!
A blocked vent could cause high levels of CO to enter the
mechanical room. Ensure vent is intact and free of any
obstructions or restrictions.