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AM Series Boilers and Water Heaters
CHAPTER 9 – OPERATION
OMM-0100_0D
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, NY 10913
Page
107
of
154
GF-146
Ph.: 800-526-0288
03/28/16
Lockout Error Messages
LOC# DESCRIPTION
CHECKS
SOLUTIONS
Loc 02
Gas valve not
supplied before
ignition attempt
a)
Check LWCO connection
b)
Check Flue blocked pressure switch
c)
Check High limit temperature switch
d)
Check High limit flue temperature fuse
a) Disconnect each safety one at a time and use a
multimeter to confirm continuity.
WARNING!
If the high temperature fuse is
blown before it is replaced, it is mandatory to
inform the manufacturer to prevent serious
damage and a possible dangerous condition.
Loc 03
Gas valve lost cable
connection during
fire
a) Check the integrity of the wires
connections between gas valve and control
board.
a)
If wires are interrupted, replace the wires.
b)
If wires are ok try to replace the gas valve or the power
control board.
Loc 04
Gas valve relay not
closing
a) Check the integrity of the wires
connections between gas valve and control
board.
a)
If wires are interrupted, replace the wires.
b)
If wires are ok try to replace the gas valve or the power
control board.
Loc 05
Gas valve circuit
a)
Check LWCO connection
b)
Check Flue blocked pressure switch
c)
Check High limit temperature switch
d)
Check High limit flue temperature fuse
a) Disconnect each safety one at a time and use a
multimeter to confirm continuity.
WARNING!
If the high temperature fuse is
blown before it is replaced, it is mandatory
to inform the manufacturer to prevent serious
damage and a possible dangerous condition.
Loc 06
Safety relay open
error
Replace the power control board
Loc 07
Safety relay closed
error
Replace the power control board
Loc 11
Blocking error over
20 hr.
Press RESET button to see the Blocking
error reference and proceed follow it.
Loc 12
Fan error
a)
Check for 120VAC power connection of
the fan
b)
Check PWM connection of the fan
a)
If no 120Vac is present replace the power control board
b)
If no PWM signal, replace power control board
c)
Try to replace the fan
Loc
13 to 24
Internal software error
Replace the power control board
Loc 25
Gas valve circuit
a)
Check LWCO connection.
b)
Check Flue blocked pressure switch
c)
Check High limit temperature switch.
d)
Check High limit flue temperature fuse.
a) Disconnect each safety one at a time and use a
multimeter to confirm continuity.
WARNING!
If the high temperature fuse is
blown before it is replaced, it is mandatory to
inform the manufacturer to prevent serious
damage and a possible dangerous condition.
Loc 26
Internal software error
Replace the power control board
Loc
27 to 28
Flame present with closed gas valve
Replace the gas valve
Loc
29 to 30
Internal software error
Replace the power control board
Loc 31
Flame loss during
run
Three times flame
lost during one
demand
a)
Check detection electrode.
b)
Check for any obstruction on air inlet / flue
exhaust system.
c)
Check for any air inlet contamination from
combustion gas (e.g. flue exhaust terminal
too much near air inlet terminal).
a)
Try to replace detection electrode.
b)
Remove any obstruction.
c)
Remove the cause of the air inlet contamination.
Loc
32 to 37
Internal software error
Replace the power control board